List of ZF transmissions

ZF Friedrichshafen AG is a German technology manufacturing company that supplies systems, in particular transmissions for all kind of passenger cars and SUVs, light commercial vehicles such as vans and light trucks, as well as all types of heavy and special vehicles like trucks and buses.

Basically there are two types of motor vehicle transmissions:

Manual – the driver has to perform each gear change using a manually operated lever, with appropriate clutch usage
Automatic – once placed in drive (or any other 'automatic' selector position), it automatically selects the gear ratio dependent on engine speed and load

Basically there are two types of engine installation:

In the longitudinal direction, the gearbox is usually designed separately from the final drive (including the differential). The transaxle configuration combines the gearbox and final drive in one housing and is only built in individual cases such as the Citroen 2CV and the Renault R4.
In the transverse direction, the gearbox and final drive are very often combined in one housing due to the much more restricted space available

Every type of transmission occurs in every type of installation.^[vague]

Passenger cars and light commercial vehicles

Manual transmissions

4-speed longitudinal

S4-12 – Lotus Elite type 14 (optional), Autocars/Reliant Sabra sports
S4-18 – Bedford Van, Opel Blitz Van, Volvo C303 (TGB11), Volvo C304 (TGB13)
4 DS-10 – Transaxle as fitted to the Hanomag F20-F36 and Mercedes L206/L306/L307 FWD Vans
4 DS-10/2 – Transaxle as fitted to the Hanomag F20-F36 and Mercedes L206/L306/L307 FWD Vans

5-speed longitudinal

5 DS 25 – transaxle as fitted to the Ford GT40 MK1 and MK3, De Tomaso Mangusta, De Tomaso Pantera, Maserati Bora, Abarth SE030, Lancia 037, BMW M1, Michelotti Pura
S5D 310Z – as fitted to the BMW E36 M3 3.0
S5D 320Z – as fitted to the BMW E36 328i
S5-16 - 1984-1991 BMW E30 318i, 320i
S5-17 - Alvis TD 21, Alvis TE 21, Alvis TF 21, Maserati 3500GT (S5-17-2), Maserati Sebring I and II, Maserati Quattroporte I, Maserati Mistral
S5-18 – Alfa Romeo Alfa 6, BMW 2002 turbo, Fiat Dino, Fiat 130, Maserati Biturbo, Maserati Quattroporte, Opel Kadett C GTE, Talbot Sunbeam Lotus, Renault Master van
S5-20 – Maserati Mistral, Maserati Sebring, Maserati Mexico, Maserati Quattroporte I, Mercedes-Benz W112 and Mercedes-Benz W113
S5-325 – Aston Martin DB5 DB6, Maserati Ghibli, Iso
S5-24 – 1967–1990 Aston Martin DBS, Maserati Quattroporte III
S5-31 – 1990–2006
S5-39 – BMW 3 Series (E46), BMW 5 Series (E39), BMW 7 Series (E38), BMW X5 (E53)
S5-42 – 1987–1995 (Ford F-250 and F-350 Pickups, F-Super Duty Chassis-Cab Truck)
S5-47 – 1995–1997 (Ford F-250 and F-350 Pickups, F-Super Duty Chassis-Cab Truck)

6-speed longitudinal

S6-37 – 1998–2015 (BMW 3 Series (E46), 4 Series, 5 Series, 6 Series)
S6-40 – 1989–1996 (Aston Martin Vantage V550, Lotus Carlton/Omega, Chevrolet Corvette, VN Holden Commodore SS Group A)
S6-45 – (Jaguar F-Type V6, BMW 135i/235i/335i)
S6-53 – 1999–Present – (Alfa Romeo Giulia Quadrifoglio, Jaguar S-Type Diesel, Land Rover Discovery 3/4, BMW 5 series E60 530d)
S6-650 – 1999–2010 (Ford F-Series Super Duty pickup Trucks, GM 2500HD & 3500 pickup trucks)

7-speed longitudinal

S7-45 – 2011–Present (Porsche 911 applications)

Automatic transmissions

Nomenclature

Nomenclature
Position	Value	Meaning

4HP 22FLE	4	Number of gears
4HP 22FLE	H	Hydraulic converter German: Hydraulischer Wandler
4HP 22FLE	P	Planetary gearsets German: Planetenradsätze
4HP 22FLE	2–3 digits	Torque rating
4HP 22FLE	F H	Front-engine · German: Frontmotor Rear-engine · German: Heckmotor
4HP 22FLE	L Q	Longitudinal engine · German: Längsmotor Transverse engine · German: Quermotor
4HP 22FLE	E A	Electronic control · German: Elektronische Steuerung Four-wheel drive · German: Allradantrieb

↑ Forward gears only ↑ Torque rating 3HP to 6HP: specified indirectly via the input shaft diameter in mm (25.4 mm equals 1 inch) 8HP to 9HP: specified directly in decanewton metres

Specifications

3- to 9-speed longitudinal and transverse
Model Gener- ation	Version	Pro- duction Period	Engine Orien- tation	Gear Ratios			Span	Layout		Cou- pling	Control
Model Gener- ation	Version	Pro- duction Period	Engine Orien- tation	$i_{1}$ $i_{R}$	$i_{n}$ Avg. Step	Count Gear- sets	Nomi- nal Effec- tive	Power Flow Cost Ratio	Brakes Clutches	Cou- pling	Control

3HP 12	20 kg⋅m (196 N⋅m; 145 lb⋅ft)	1963 – 1977	Longitudinal	2.5600 −2.0000	1.0000 1.6000	3 2	2.5600 2.0000	S 2.0000	2 2	Torque converter	Hydraulic
3HP 12	TBD	1963 – 1977	Longitudinal	2.2857 −2.0000	1.0000 1.5119	3 2	2.2857 2.0000	S 2.0000	2 2	Torque converter	Hydraulic
3HP 20	TBD	1967 –	Longitudinal	TBD TBD	1.0000 TBD	3 2	TBD	S 2.0000	2 2	Torque converter	Hydraulic
3HP 22	TBD	1973 – 1990	Longitudinal	2.7331 −2.0857	1.0000 1.6532	3 2	2.7331 2.0857	S 2.3333	3 2	Torque converter	Hydraulic
3HP 22	30 kg⋅m (294 N⋅m; 217 lb⋅ft)	1973 – 1990	Longitudinal	2.4795 −2.0857	1.0000 1.5746	3 2	2.4795 2.0857	S 2.3333	3 2	Torque converter	Hydraulic

4HP 22	380 N⋅m (280 lb⋅ft)	1980 – 2003	Longitudinal	2.7331 −2.0857	0.7281 1.5541	4 3	3.7539 2.8647	S 2.5000	4 3	Torque converter w/ lockup	Hydraulic
4HP 22	380 N⋅m (280 lb⋅ft)	1980 – 2003	Longitudinal	2.4795 −2.0857	0.7281 1.5045	4 3	3.4055 2.8647	S 2.5000	4 3	Torque converter w/ lockup	Hydraulic
4HP 18FL 4HP 18Q	350 N⋅m (258 lb⋅ft)	1984 – 1998	Longitudinal Transverse	2.5789 −2.8824	0.7424 1.5145	4 3	3.4737 3.4737	S 2.0000	2 3	Torque converter w/ lockup	Hydraulic
4HP 14	TBD	1987 – 2001	Transverse	2.4118 −2.8276	0.7387 1.4835	4 3	3.2647 3.2647	S 2.0000	2 3	Torque converter	Hydraulic
4HP 24	400 N⋅m (295 lb⋅ft)	1987 – 2004	Longitudinal	2.7331 −2.0857	0.7281 1.5541	4 3	3.7539 2.8647	S 2.0000	4 3	Torque converter w/ lockup	Hydraulic
4HP 24	400 N⋅m (295 lb⋅ft)	1987 – 2004	Longitudinal	2.4795 −2.0857	0.7281 1.5045	4 3	3.4055 2.8647	S 2.5000	4 3	Torque converter w/ lockup	Hydraulic
4HP 20	330 N⋅m (243 lb⋅ft)	1995 – 2010	Transverse	2.7177 −2.5676	0.7197 1.5572	4 2	3.7762 3.5676	S 1.7500	2 3	Torque converter w/ lockup	Electronic
4HP 16	330 N⋅m (243 lb⋅ft)	2004 – 2008	Transverse	2.7195 −2.5294	0.7167 1.5598	4 2	3.7946 3.5294	S 1.7500	2 3	Torque converter w/ lockup	Electronic

5HP 18	310 N⋅m (229 lb⋅ft)	1990 – 1997	Longitudinal	3.6648 −4.0960	0.7424 1.4906	5 3	4.9363 4.9363	S 2.0000	3 4	Torque converter w/ lockup	Electronic
5HP 19	325 N⋅m (240 lb⋅ft)	1997 – 2002	Longitudinal	3.6648 −4.0960	0.7424 1.4906	5 3	4.9363 4.9363	S 2.0000	3 4	Torque converter w/ lockup	Electronic

5HP 30	560 N⋅m (413 lb⋅ft)	1992 – 2000	Longitudinal	3.5526 −3.6842	0.7865 1.4578	5 3	4.5169 4.5169	P & S 1.8000	3 3	Torque converter w/ lockup	Electronic
5HP 24	440 N⋅m (325 lb⋅ft)	1996 – 2002	Longitudinal	3.5714 −4.0952	0.8037 1.4519	5 3	4.4435 4.4435	P & S 1.8000	3 3	Torque converter w/ lockup	Electronic

6HP 26 1st	600 N⋅m (443 lb⋅ft)	2000 – 2007	Longitudinal	4.1708 −3.4025	0.6911 1.4327	6 3	6.0354 4.9236	P & S 1.3333	2 3	Torque converter w/ lockup	Electronic
6HP 19 1st	350 N⋅m (258 lb⋅ft)
6HP 32 1st	750 N⋅m (553 lb⋅ft)

6HP 28 2nd	600 N⋅m (443 lb⋅ft)	2007 – 2014	Longitudinal	4.1708 −3.4025	0.6911 1.4327	6 3	6.0354 4.9236	P & S 1.3333	2 3	Torque converter w/ lockup	Electronic
6HP 21 2nd	350 N⋅m (258 lb⋅ft)
6HP 34 2nd	750 N⋅m (553 lb⋅ft)

CFT 23	230 N⋅m (170 lb⋅ft)	2003 – 2007	Transverse	2.42 −2.42	0.42 1.000 (CVT)	∞ (CVT)	5.762 5.762	S 1	— —	Torque converter w/ lockup	Electronic
CFT 30	310 N⋅m (229 lb⋅ft)	2004 – 2007	Transverse	2.47 −2.47	0.42 1.000 (CVT)	∞ (CVT)	5.881 5.881	S 1	— —	Torque converter w/ lockup	Electronic

7DT-45	500 N⋅m (369 lb⋅ft)	2009 –	Longitudinal RR	3.91 −3.55	0.62 1.359	7 7	6.306 5.726	S 7	— —	Dual- Clutch	Electronic
7DT-70	780 N⋅m (575 lb⋅ft)	2010 –	Longitudinal RR	3.91 −3.55	0.62 1.359	7 7	6.306 5.726	S 7	— —	Dual- Clutch	Electronic
7DT-75	750 N⋅m (553 lb⋅ft)	2010 –	Longitudinal	5.97 −4.57	0.59 1.471	7 7	10.119 7.746	S 7	— —	Dual- clutch	Electronic

8DT-80	1,000 N⋅m (738 lb⋅ft)	2016 –	Longitudinal	5.966 −5.220	0.534 1.412	8 8	11.172 9.775	S 8	— —	Dual- Clutch	Electronic
8DT-55	600 N⋅m (443 lb⋅ft)	2019 –	Longitudinal RR	4.89 −3.99	0.61 1.346	8 8	8.016 6.541	S 8	— —	Dual- Clutch	Electronic

8HP 70 Pilot	700 N⋅m (516 lb⋅ft)	2008 – 2011	Longitudinal	4.6957 −3.2968	0.6667 1.3216	8 4	7.0435 4.9452	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic

8HP 30 1st	300 N⋅m (221 lb⋅ft)	2010 – 2015	Longitudinal	4.7143 −3.2952	0.6667 1.3224	8 4	7.0714 4.9429	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 45 1st	450 N⋅m (332 lb⋅ft)	2010 – 2015	Longitudinal	4.7143 −3.2952	0.6667 1.3224	8 4	7.0714 4.9429	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 55 1st	650 N⋅m (479 lb⋅ft)	2010 –	Longitudinal	4.7143 −3.3168	0.6667 1.3224	8 4	7.0714 4.9752	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 65 1st	650 N⋅m (479 lb⋅ft)	2010 –
8HP 70 1st	700 N⋅m (516 lb⋅ft)	2010 – 2015
8HP 90 1st	900 N⋅m (664 lb⋅ft)	2010 – 2015

8HP 75/I 2nd	740 N⋅m (546 lb⋅ft)	2014 – 2018	Longitudinal	4.7143 −3.3168	0.6667 1.3224	8 4	7.0714 4.9752	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 30 2nd	300 N⋅m (221 lb⋅ft)	2014 – 2019	Longitudinal	5.0000 −3.4560	0.6400 1.3413	8 4	7.8125 5.4000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 50 2nd	500 N⋅m (369 lb⋅ft)	2014 – 2019	Longitudinal	5.0000 −3.4560	0.6400 1.3413	8 4	7.8125 5.4000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 75/II 2nd	740 N⋅m (546 lb⋅ft)	2014 – 2019	Longitudinal	5.0000 −3.4783	0.6400 1.3413	8 4	7.8125 5.4348	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 95 2nd	900 N⋅m (664 lb⋅ft)	2014 – Present	Longitudinal	5.0000 −3.4783	0.6400 1.3413	8 4	7.8125 5.4348	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic

8P 45R	450 N⋅m (332 lb⋅ft)	2016 – Present	Longitudinal	TBD TBD	TBD 1.2275	8 4	TBD 4.2000	P & S 1.1250	2 3	integrated	Electronic

9HP 28	280 N⋅m (207 lb⋅ft)	2013 – Present	Transverse	4.7001 −3.8049	0.4792 1.3303	9 4	9.8085 7.9402	P & S 1.1111	3 3	Torque converter w/ lockup	Electronic
9HP 48	480 N⋅m (354 lb⋅ft)	2013 – Present	Transverse	4.7001 −3.8049	0.4792 1.3303	9 4	9.8085 7.9402	P & S 1.1111	3 3	Torque converter w/ lockup	Electronic
Automatic transmissions with components for hybrid drive on request
8HP 76/I 3rd	900 N⋅m (664 lb⋅ft)	2018 – Present	Longitudinal	5.0000 −3.4783	0.6400 1.3413	8 4	7.8125 5.4348	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 30 3rd	300 N⋅m (221 lb⋅ft)	2018 – Present	Longitudinal	5.2500 −3.7120	0.6400 1.3507	8 4	8.2031 5.8000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 51 3rd	500 N⋅m (369 lb⋅ft)	2018 – Present	Longitudinal	5.2500 −3.7120	0.6400 1.3507	8 4	8.2031 5.8000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 76/II 3rd	750 N⋅m (553 lb⋅ft)	2018 – Present	Longitudinal	5.5000 −3.9930	0.6400 1.3597	8 4	8.5938 6.2391	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
Automatic transmissions with integrated, versatile component system for hybrid drive
8HP 100 4th	1,000 N⋅m (738 lb⋅ft)	2022 – Present	Longitudinal	5.0000 −3.9680	0.6400 1.3413	8 4	7.8125 6.2000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8HP 80 4th	800 N⋅m (590 lb⋅ft)	2022 – Present	Longitudinal	5.5000 −4.5440	0.6400 1.3597	8 4	8.5938 7.1000	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic

↑ for the applications refer to the individual pages ↑ Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage Nomenclature With $n=$ gear is $i_{n}=$ gear ratio or transmission ratio $\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft $\omega _{2;n}=$ shaft speed shaft 2: output shaft ↑ Average gear step $\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$ There are $n-1$ gear steps between $n$ gears with decreasing step width the gears connect better to each other shifting comfort increases ↑ plus 1 reverse gear (unless otherwise specified) ↑ Epicyclic gearing (unless otherwise specified) ↑ Total ratio span (total gear ratio/total transmission ratio) nominal ${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$ A wider span enables the downspeeding when driving outside the city limits increase the climbing ability when driving over mountain passes or off-road or when towing a trailer ↑ Total ratio span (total gear ratio/total transmission ratio) effective ${\frac {\omega _{2;n}}{max(\omega _{2;1};\|\omega _{2;R}\|)}}={\frac {min(i_{1};\|i_{R}\|)}{i_{n}}}$ The span is only effective to the extent that the reverse gear ratio matches that of 1st gear Digression Reverse gear is usually longer than 1st gear the effective span* is therefore of central importance for describing the suitability of a transmission* because in these cases, the nominal spread conveys a misleading picture which is only unproblematic for vehicles with high specific power Market participants Manufacturers naturally have no interest in specifying the effective span Users have not yet formulated the practical benefits that the effective span has for them The effective span has not yet played a role in research and teaching Contrary to its significance the effective span* has therefore not yet been able to establish itself* either in theory or in practice. End of digression 1 2 Progress increases cost-effectiveness and is reflected in the ratio of forward gears to main components. It depends on the power flow: parallel: using the two degrees of freedom of planetary gearsets to increase the number of gears with unchanged number of components serial: in-line combined planetary gearsets without using the two degrees of freedom to increase the number of gears a corresponding increase in the number of components is unavoidable ↑ 4HP 18FL: Front-wheel drive · FL: front longitudinal (German: front längs) ↑ 4HP 18Q: Front-wheel drive · Q: transverse (German: quer), without additional F, as transverse installation only occurs with front-wheel drive (even as part of all-wheel drive) 1 2 3 4 5 6 6HP: Lepelletier gear mechanism ↑ 6HP 34: planned, but never went into production ↑ CFT 30: Ford Motor Company 2005 – 2007 Ford Five Hundred 2005 – 2007 Mercury Montego 2005 – 2007 Ford Freestyle ↑ 7DT-45: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe) 2009 Porsche 911 Carrera 2009 Porsche 997 Carrera and Carrera S 2009 Porsche Cayman 2009 Porsche Boxster See also: https://newsroom.porsche.com/en_US/media-resources/technical-specifications.html 1 2 3 4 helical gear ↑ 7DT-70: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe) 2010 Porsche 911 Turbo ↑ 7DT-75: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe) 2009 Porsche Panamera ↑ 8DT-80: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe) 2016 Porsche Panamera 2018 Bentley Continental GT 2019 Aston Martin Valhalla V6 Hybrid Limited Edition ↑ 8DT-55: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe) 2020 Porsche 911 Carrera S Cabriolet (8th gear missing) 2020 Porsche 911 Carrera S 1 2 3 8HP: 900 N⋅m (664 lb⋅ft) Otto (petrol) engines · 1,000 N⋅m (738 lb⋅ft) Diesel engines ↑ 8P 45R: developed for racing cars ↑ 8HP 100: narrow total ratio span · preferebly for Otto (petrol) engines, sports cars, and high performance engines · The first-ever BMW XM · Market launch September 2022 The all-new BMW M5 · Market launch June 2024 ↑ 8HP 80: wide total ratio span · preferebly for Diesel engines, offroad cars, and low performance engines · Progress and efficiency with added variety: additional drive system variants and innovations for the new BMW 7 Series · Market launch 2022/2023 Alpina XB7 AWD · Technical Data

Heavy vehicles

These are for heavy motor vehicles; such as large goods vehicles (trucks), buses, motorcoaches, agricultural machinery, plant equipment (such as earth movers), or specialist military vehicles such as tanks.

Manual synchromesh transmissions for trucks

TD: Truck transmission with direct drive top gear
TO: Truck transmission with overdrive top gear

5-speed & 6-speed (ZF Ecolite)

Source:

9-speed (ZF Ecomid)

Source:

12-speed & 16-speed (ZF Ecosplit)

Source:

Manual synchromesh transmissions for tanks

6-speed

7-speed

AK 7–200

Automatic transmissions

2-speed automatic transmission

Busmatic – 1963–1979

4- to 6-speed Ecomat series

4, 5 or 6-speed with Hydraulic Retarder and Neutral on Vehicle Stop (4/5/6 HP 500/590/600) – 1980–2002
4, 5 or 6-speed with Hydraulic Retarder and Neutral on Vehicle Stop (4/5/6 HP 502/592/602/C) – 1997–2007
5, or 6-speed with Hydraulic Retarder and Neutral on Vehicle Stop (5/6 HP 504C/594C/604C) – 2006–2016

6- & 7-speed EcoLife series

1st generation 6-speed with Hydraulic Retarder (6APxx0x B/C/BS/SP series) – 2008–2019
2nd generation 6-speed with Hydraulic Retarder (6APxx2x B/S series) – 2019–
Off-Road 7-speed with Hydraulic Retarder (7APxx0x and 7APxx2x (S) series)
Off-Road 6-speed with Hydraulic Retarder and Power Take-Off (6APxx2x SK series)

References:

8-speed PowerLine series

PowerLine specifications
Model Gener- ation	Version	Pro- duction Period	Engine Orien- tation	Gear Ratios			Span	Layout		Cou- pling	Control
Model Gener- ation	Version	Pro- duction Period	Engine Orien- tation	$i_{1}$ $i_{R}$	$i_{n}$ Avg. Step	Count Gear- sets	Nomi- nal Effec- tive	Power Flow Cost Ratio	Brakes Clutches	Cou- pling	Control

8AP 600 T	600 N⋅m (443 lb⋅ft)	2017 – Present	Longitudinal	4.8889 −4.2501	0.6389 1.3374	8 4	7.6522 6.6523	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic
8AP 800 T	800 N⋅m (590 lb⋅ft)
8AP 1000 T	1,000 N⋅m (738 lb⋅ft)
8AP 1200 T	1,200 N⋅m (885 lb⋅ft)

8AP 1200 S	1,200 N⋅m (885 lb⋅ft)	2017 – Present	Longitudinal	4.8889 −3.7569	0.6389 1.3374	8 4	7.6522 5.8803	P & S 1.1250	2 3	Torque converter w/ lockup	Electronic

↑ Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage Nomenclature With $n=$ gear is $i_{n}=$ gear ratio or transmission ratio $\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft $\omega _{2;n}=$ shaft speed shaft 2: output shaft ↑ Average gear step $\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$ There are $n-1$ gear steps between $n$ gears with decreasing step width the gears connect better to each other shifting comfort increases ↑ plus 1 reverse gear (unless otherwise specified) ↑ Epicyclic gearing (unless otherwise specified) ↑ Total ratio span (total gear ratio/total transmission ratio) nominal ${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$ A wider span enables the downspeeding when driving outside the city limits increase the climbing ability when driving over mountain passes or off-road or when towing a trailer ↑ Total ratio span (total gear ratio/total transmission ratio) effective ${\frac {\omega _{2;n}}{max(\omega _{2;1};\|\omega _{2;R}\|)}}={\frac {min(i_{1};\|i_{R}\|)}{i_{n}}}$ The span is only effective to the extent that the reverse gear ratio matches that of 1st gear Digression Reverse gear is usually longer than 1st gear the effective span* is therefore of central importance for describing the suitability of a transmission* because in these cases, the nominal spread conveys a misleading picture which is only unproblematic for vehicles with high specific power Market participants Manufacturers naturally have no interest in specifying the effective span Users have not yet formulated the practical benefits that the effective span has for them The effective span has not yet played a role in research and teaching Contrary to its significance the effective span* has therefore not yet been able to establish itself* either in theory or in practice. End of digression 1 2 Progress increases cost-effectiveness and is reflected in the ratio of forward gears to main components. It depends on the power flow: parallel: using the two degrees of freedom of planetary gearsets to increase the number of gears with unchanged number of components serial: in-line combined planetary gearsets without using the two degrees of freedom to increase the number of gears a corresponding increase in the number of components is unavoidable 1 2 3 4 8AP T: Automatic Powershift Transmission for Trucks 1 2 higher torque on demand ↑ 8AP S: Automatic Powershift Transmission for Special Vehicles

12-speed AMT

AS Tronic – automated manual (AMT) with Hydraulic Retarder – 1997–

Notes

↑ ZF CFT 23 (https://gearboxlist.com/zf/cft23/ · Retrieved 2024-11-16)
↑ ZF CFT 30 (https://gearboxlist.com/zf/cft30/ · Retrieved 2024-11-16)
↑ ZF 7DT-45 (https://gearboxlist.com/zf/7dt-45/ · Retrieved 2024-11-16)
↑ ZF 7DT-70 (https://gearboxlist.com/zf/7dt-70/ · Retrieved 2024-11-16)
↑ ZF 7DT-75 (https://gearboxlist.com/zf/7dt-75/ · Retrieved 2024-11-16)
↑ ZF 8DT-80 (https://gearboxlist.com/zf/8dt-80/ · Retrieved 2024-11-16)
↑ ZF 8DT-55 (https://gearboxlist.com/zf/8dt-55/ · Retrieved 2024-11-16)

References

↑ Streather, Adrian (2006). Ford GT: Then, and Now – Adrian Streather – Google Books. Veloce Publishing Limited. ISBN 9781845840549. Retrieved 24 May 2016.
↑ Cupler, Justin (22 August 2012). "1964 – 1969 Ford GT40 | car review @ Top Speed". TopSpeed.com. Retrieved 24 May 2016.
↑ "BMW Parts Catalogue". Archived from the original on 14 January 2016.
↑ "Online BMW Parts Catalog".
↑ "ZF 6HP28". ZF Friedrichshafen AG. Archived from the original (PDF) on 7 June 2021. Retrieved 18 September 2009.
↑ "ZF 6HP34" (PDF). ZF Friedrichshafen AG. Retrieved 18 September 2009.^{[permanent dead link]}
1 2 3 4 5 6 7 "Gearboxlist".
↑ "ZF 7-speed dual-clutch transmission". ZF Friedrichshafen AG. ZF.com. Archived from the original on 23 May 2010. Retrieved 15 November 2009.
1 2 3 4 5 "FEATURE: ZF's new 7DT 'Mood-Sensing' Dual-Clutch Transmissions". CSM Worldwide. Just-Auto.com. 23 September 2009. Retrieved 15 November 2009.
1 2 "Porsche Joins the DCT Set". The Lubrizol Corporation. DCTfacts.com. Archived from the original on 1 October 2009. Retrieved 15 November 2009.
↑ "Top 911 moves to industry-standard shift controls". The Lubrizol Corporation. DCTfacts.com. 24 September 2009. Archived from the original on 16 October 2009. Retrieved 28 October 2009.
↑ "ZF in the Porsche 911 Carrera: Porsche Carrera – Versatility with sports car genetics". ZF Friedrichshafen AG. ZF.com. Archived from the original on 21 August 2009. Retrieved 28 October 2009.
↑ "New Porsche 911 with Direct Fuel Injection and Double-Clutch Gearbox" (Press release). Porsche Cars Great Britain Ltd. / Dr. Ing. h.c. F. Porsche AG. 6 June 2008. Retrieved 31 October 2009.
↑ "Porsche Doppelkupplung (PDK) – 911 Carrera & 911 Targa 4 Models". Dr. Ing. h.c. F. Porsche AG. Porsche.com. Archived from the original on 18 June 2008. Retrieved 20 November 2019.
↑ "2009 Porsche Carrera PDK Transmission" (YouTube video interview with Porsche official). Roadfly.com/YouTube, LLC. Archived from the original on 19 December 2021. Retrieved 28 October 2009.
1 2 "The new 911 Turbo. Efficiency demands performance". Dr. Ing. h.c. F. Porsche AG. Porsche.com. Archived from the original on 10 August 2011. Retrieved 7 November 2009.
1 2 "ZF Starts Production of the New 8-Speed Dual-Clutch Transmission at the Brandenburg Location" (Press release). Brandenburg: ZF Press Release. 16 June 2016. Retrieved 9 September 2016.
↑ "Porsche Panamera 4S - 8-Gang Porsche Doppelkupplungsgetriebe (PDK) - Porsche Deutschland". Archived from the original on 23 September 2016. Retrieved 9 September 2016.
↑ Ewing, Mark (30 August 2017). "All-New Bentley Continental: 626 HP 207 MPH Second Cousin to the Porsche Panamera". Forbes. Retrieved 27 March 2018.
↑ "Porsche 911 Carrera S · Technical Specifications 2020" (PDF). Retrieved 16 November 2024.
↑ "Porsche 911 Carrera S · Technical Specifications 2020" (PDF). Retrieved 16 November 2024.
↑ "ZF unveils new 8-speed automatic gearbox". PaulTan.org. 3 May 2007. Retrieved 18 September 2009.
↑ "The freedom to exceed limits". ZF Friedrichshafen AG. Archived from the original (PDF) on 19 April 2021. Retrieved 18 September 2009.
1 2 3 4 5 2nd Generation and 3rd Generation "Efficient And Dynamic · ZF Gearbox Brochure" (PDF). 1 September 2017. Archived from the original (PDF) on 14 December 2018. Retrieved 7 July 2019.
↑ "Durable and fast - ZF Race Transmissions" (PDF). Archived from the original (PDF) on 11 December 2023.
1 2 "ZF Friedrichshafen AG | Press Release Products". Zf.com. 31 December 2010. Retrieved 11 July 2012.
1 2 "ZF Friedrichshafen AG | 9HP - Innovation with nine speeds". Archived from the original on 16 August 2011. Retrieved 25 August 2011.
1 2 "ZF 9-Speed Automatic Transmission for Chrysler and Dodge cars". Allpar.com. Retrieved 11 July 2012.
↑ "The first-ever BMW XM". 28 September 2022. Retrieved 15 November 2024.
↑ "Technical Specifications · BMW XM". 28 September 2022. Retrieved 15 November 2024.
↑ "The all-new BMW M5". 26 June 2024. Retrieved 15 November 2024.
↑ "Technical Specifications · BMW M5". 26 June 2024. Retrieved 15 November 2024.
↑ "Progress and efficiency with added variety: additional drive system variants and innovations for the new BMW 7 Series". 28 September 2022. Retrieved 15 November 2024.
↑ "Technical specifications · BMW 7 series · 740d xDrive". 28 September 2022. Retrieved 15 November 2024.
↑ "Technical Data: Alpina Automobiles". 2024. Retrieved 15 November 2024.
↑ "Trucks | Truck | Ecolite for Light Trucks – ZF Friedrichshafen AG". Zf.com. Archived from the original on 16 December 2013. Retrieved 24 May 2016.
↑ "Trucks | Truck | Ecomid – ZF Friedrichshafen AG". Zf.com. Archived from the original on 15 March 2013. Retrieved 24 May 2016.
↑ "Trucks | Truck | Ecosplit – ZF Friedrichshafen AG". Zf.com. Archived from the original on 11 December 2012. Retrieved 24 May 2016.
↑ "ZF-EcoLife" (PDF). autosurdelevante.com. Retrieved 1 September 2024.
↑ "EcoLife 2 - ZF". www.zf.com. Retrieved 1 September 2024.
↑ "EcoLife Offroad 2" (PDF). www.zf.com. Retrieved 1 September 2024.
↑ https://www.zf.com/master/media/products_1/commercial_vehicles/footer_1/brochures_trucks_buses/2020_3/TT_Product_Overview_DE_EN_LowRes.pdf · p. 7
↑ "8 Speed Automatic Powershift Transmission - PowerLine" (PDF). Archived from the original (PDF) on 28 June 2023.
↑ Efficient Torque Converter Automatic Transmission for Commercial Vehicles (ZF 8AP) · Winfried Gründler · Herbert Mozer · Frank Sauter: ATZ worldwide 06/2017 · pp. 36–39
↑ "The New Driving Experience" (PDF). Archived from the original (PDF) on 28 June 2023.
↑ "ZF AS Tronic". ZF Friedrichshafen AG. ZF.com. Archived from the original on 24 January 2010. Retrieved 30 November 2009.

External links

"ZF North America Application Chart (automatic)" (PDF). ZF-Group.com. Archived from the original (PDF) on 4 January 2006. Retrieved 11 February 2006.
"ZF North America Remanufactured Transmissions and Parts Catalog (Ford Truck Manual Transmissions)" (PDF). ZF-Group.com. Retrieved 31 July 2006. ^{[dead link]}
"Transmission and Oil Application Chart (BMW Transmissions 1991–1999)" (PDF). June 2001. Retrieved 18 September 2009.
"The Passion of Gears" (PDF). ZF Friedrichshafen AG. Retrieved 7 October 2009. ^{[dead link]}
ZF.com official ZF Friedrichshafen AG website
ZF-aftermarket.us ZF Genuine spare parts
Dinet.biz Alternative spare parts for ZF gearbox buses

[5] Forward gears only

[6] Torque rating
3HP to 6HP: specified indirectly via the input shaft diameter in mm (25.4 mm equals 1 inch)

8HP to 9HP: specified directly in decanewton metres

[mwAQU] 3HP to 6HP: specified indirectly via the input shaft diameter in mm (25.4 mm equals 1 inch)

[mwAQg] 8HP to 9HP: specified directly in decanewton metres

[7] r the applications refer to the individual pages

[8] Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
Nomenclature
With $n=$ gear is
$i_{n}=$ gear ratio or transmission ratio

$\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft

$\omega _{2;n}=$ shaft speed shaft 2: output shaft

[mwB9M] $i_{n}=$ gear ratio or transmission ratio

[mwB-E] $\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft

[mwB_Y] $\omega _{2;n}=$ shaft speed shaft 2: output shaft

[9] Average gear step
$\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$

There are $n-1$ gear steps between $n$ gears

with decreasing step width
the gears connect better to each other

shifting comfort increases

[mwCAs] $\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$

[mwCEM] There are $n-1$ gear steps between $n$ gears

[mwCFg] with decreasing step width
the gears connect better to each other

shifting comfort increases

[mwCFo] the gears connect better to each other

[mwCFs] shifting comfort increases

[10] us 1 reverse gear (unless otherwise specified)

[11] Epicyclic gearing (unless otherwise specified)

[12] Total ratio span (total gear ratio/total transmission ratio) nominal
${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$

A wider span enables the
downspeeding when driving outside the city limits

increase the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwCGg] ${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$

[mwCOE] A wider span enables the
downspeeding when driving outside the city limits

increase the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwCOM] wnspeeding when driving outside the city limits

[mwCOQ] rease the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwCOY] when driving over mountain passes or off-road

[mwCOc] r when towing a trailer

[effective-13] Total ratio span (total gear ratio/total transmission ratio) effective
${\frac {\omega _{2;n}}{max(\omega _{2;1};|\omega _{2;R}|)}}={\frac {min(i_{1};|i_{R}|)}{i_{n}}}$

The span is only effective to the extent that
the reverse gear ratio

matches that of 1st gear
Digression
Reverse gear
is usually longer than 1st gear

the effective span is therefore of central importance for describing the suitability of a transmission

because in these cases, the nominal spread conveys a misleading picture

which is only unproblematic for vehicles with high specific power
Market participants
Manufacturers naturally have no interest in specifying the effective span

Users have not yet formulated the practical benefits that the effective span has for them

The effective span has not yet played a role in research and teaching
Contrary to its significance
the effective span has therefore not yet been able to establish itself
either in theory

or in practice.
End of digression

[mwCO0] ${\frac {\omega _{2;n}}{max(\omega _{2;1};|\omega _{2;R}|)}}={\frac {min(i_{1};|i_{R}|)}{i_{n}}}$

[mwCS8] The span is only effective to the extent that
the reverse gear ratio

matches that of 1st gear

[mwCTE] the reverse gear ratio

[mwCTI] tches that of 1st gear

[mwCTc] s usually longer than 1st gear

[mwCTo] the effective span is therefore of central importance for describing the suitability of a transmission

[mwCT4] use in these cases, the nominal spread conveys a misleading picture

[mwCUE] which is only unproblematic for vehicles with high specific power

[mwCUY] Manufacturers naturally have no interest in specifying the effective span

[mwCUg] Users have not yet formulated the practical benefits that the effective span has for them

[mwCUo] The effective span has not yet played a role in research and teaching

[mwCU8] the effective span has therefore not yet been able to establish itself
either in theory

or in practice.

[mwCVQ] ther in theory

[mwCVc] r in practice.

[Progress-14] 1 2 Progress increases cost-effectiveness and is reflected in the ratio of forward gears to main components.
It depends on the power flow:
parallel: using the two degrees of freedom of planetary gearsets
to increase the number of gears

with unchanged number of components

serial: in-line combined planetary gearsets without using the two degrees of freedom
to increase the number of gears

a corresponding increase in the number of components is unavoidable

[mwCWc] parallel: using the two degrees of freedom of planetary gearsets
to increase the number of gears

with unchanged number of components

[mwCWs] to increase the number of gears

[mwCWw] with unchanged number of components

[mwCW0] serial: in-line combined planetary gearsets without using the two degrees of freedom
to increase the number of gears

a corresponding increase in the number of components is unavoidable

[mwCXE] to increase the number of gears

[mwCXI] rresponding increase in the number of components is unavoidable

[15] 4HP 18FL: Front-wheel drive · FL: front longitudinal (German: front längs)

[16] 4HP 18Q: Front-wheel drive · Q: transverse (German: quer), without additional F, as transverse installation only occurs with front-wheel drive (even as part of all-wheel drive)

[Lepelletier-17] 1 2 3 4 5 6 6HP: Lepelletier gear mechanism

[20] 6HP 34: planned, but never went into production

[23] CFT 30: Ford Motor Company
2005 – 2007 Ford Five Hundred

2005 – 2007 Mercury Montego

2005 – 2007 Ford Freestyle

[mwCaQ] 2005 – 2007 Ford Five Hundred

[mwCak] 2005 – 2007 Mercury Montego

[mwCa4] 2005 – 2007 Ford Freestyle

[34] 7DT-45: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe)
2009 Porsche 911 Carrera

2009 Porsche 997 Carrera and Carrera S

2009 Porsche Cayman

2009 Porsche Boxster
See also: https://newsroom.porsche.com/en_US/media-resources/technical-specifications.html

[mwCc8] 2009 Porsche 911 Carrera

[mwCd0] 2009 Porsche 997 Carrera and Carrera S

[mwCes] 2009 Porsche Cayman

[mwCfE] 2009 Porsche Boxster

[helical-35] 1 2 3 4 helical gear

[38] 7DT-70: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe)
2010 Porsche 911 Turbo

[mwChI] 2010 Porsche 911 Turbo

[40] 7DT-75: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe)
2009 Porsche Panamera

[mwCis] 2009 Porsche Panamera

[45] 8DT-80: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe)
2016 Porsche Panamera

2018 Bentley Continental GT

2019 Aston Martin Valhalla V6 Hybrid Limited Edition

[mwCkk] 2016 Porsche Panamera

[mwCk8] 2018 Bentley Continental GT

[mwClU] 2019 Aston Martin Valhalla V6 Hybrid Limited Edition

[49] 8DT-55: Porsche PDK (Porsche dual-clutch gearbox · German: Porsche Doppelkupplungsgetriebe)
2020 Porsche 911 Carrera S Cabriolet (8th gear missing)

2020 Porsche 911 Carrera S

[mwCms] 2020 Porsche 911 Carrera S Cabriolet (8th gear missing)

[mwCnA] 2020 Porsche 911 Carrera S

[Petrol-52] 1 2 3 8HP: 900 N⋅m (664 lb⋅ft) Otto (petrol) engines · 1,000 N⋅m (738 lb⋅ft) Diesel engines

[55] 8P 45R: developed for racing cars

[63] 8HP 100: narrow total ratio span · preferebly for Otto (petrol) engines, sports cars, and high performance engines · The first-ever BMW XM · Market launch September 2022 The all-new BMW M5 · Market launch June 2024

[67] 8HP 80: wide total ratio span · preferebly for Diesel engines, offroad cars, and low performance engines · Progress and efficiency with added variety: additional drive system variants and innovations for the new BMW 7 Series · Market launch 2022/2023 Alpina XB7 AWD · Technical Data

[74] Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
Nomenclature
With $n=$ gear is
$i_{n}=$ gear ratio or transmission ratio

$\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft

$\omega _{2;n}=$ shaft speed shaft 2: output shaft

[mwC8g] $i_{n}=$ gear ratio or transmission ratio

[mwC9Y] $\omega _{1;n}=\omega _{t}=$ shaft speed shaft 1: input (turbine) shaft

[mwC-s] $\omega _{2;n}=$ shaft speed shaft 2: output shaft

[75] Average gear step
$\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$

There are $n-1$ gear steps between $n$ gears

with decreasing step width
the gears connect better to each other

shifting comfort increases

[mwDAA] $\left({\frac {\omega _{2;n}}{\omega _{2;1}}}\right)^{\frac {1}{n-1}}=\left({\frac {i_{1}}{i_{n}}}\right)^{\frac {1}{n-1}}$

[mwDDg] There are $n-1$ gear steps between $n$ gears

[mwDE0] with decreasing step width
the gears connect better to each other

shifting comfort increases

[mwDE8] the gears connect better to each other

[mwDFA] shifting comfort increases

[76] us 1 reverse gear (unless otherwise specified)

[77] Epicyclic gearing (unless otherwise specified)

[78] Total ratio span (total gear ratio/total transmission ratio) nominal
${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$

A wider span enables the
downspeeding when driving outside the city limits

increase the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwDF0] ${\frac {\omega _{2;n}}{\omega _{2;1}}}={\frac {\frac {\omega _{2;n}}{\omega _{2;1}\omega _{2;n}}}{\frac {\omega _{2;1}}{\omega _{2;1}\omega _{2;n}}}}={\frac {\frac {1}{\omega _{2;1}}}{\frac {1}{\omega _{2;n}}}}={\frac {\frac {\omega _{t}}{\omega _{2;1}}}{\frac {\omega _{t}}{\omega _{2;n}}}}={\frac {i_{1}}{i_{n}}}$

[mwDNY] A wider span enables the
downspeeding when driving outside the city limits

increase the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwDNg] wnspeeding when driving outside the city limits

[mwDNk] rease the climbing ability
when driving over mountain passes or off-road

or when towing a trailer

[mwDNs] when driving over mountain passes or off-road

[mwDNw] r when towing a trailer

[effective-79] Total ratio span (total gear ratio/total transmission ratio) effective
${\frac {\omega _{2;n}}{max(\omega _{2;1};|\omega _{2;R}|)}}={\frac {min(i_{1};|i_{R}|)}{i_{n}}}$

The span is only effective to the extent that
the reverse gear ratio

matches that of 1st gear
Digression
Reverse gear
is usually longer than 1st gear

the effective span is therefore of central importance for describing the suitability of a transmission

because in these cases, the nominal spread conveys a misleading picture

which is only unproblematic for vehicles with high specific power
Market participants
Manufacturers naturally have no interest in specifying the effective span

Users have not yet formulated the practical benefits that the effective span has for them

The effective span has not yet played a role in research and teaching
Contrary to its significance
the effective span has therefore not yet been able to establish itself
either in theory

or in practice.
End of digression

[mwDOI] ${\frac {\omega _{2;n}}{max(\omega _{2;1};|\omega _{2;R}|)}}={\frac {min(i_{1};|i_{R}|)}{i_{n}}}$

[mwDSQ] The span is only effective to the extent that
the reverse gear ratio

matches that of 1st gear

[mwDSY] the reverse gear ratio

[mwDSc] tches that of 1st gear

[mwDSw] s usually longer than 1st gear

[mwDS8] the effective span is therefore of central importance for describing the suitability of a transmission

[mwDTM] use in these cases, the nominal spread conveys a misleading picture

[mwDTY] which is only unproblematic for vehicles with high specific power

[mwDTs] Manufacturers naturally have no interest in specifying the effective span

[mwDT0] Users have not yet formulated the practical benefits that the effective span has for them

[mwDT8] The effective span has not yet played a role in research and teaching

[mwDUQ] the effective span has therefore not yet been able to establish itself
either in theory

or in practice.

[mwDUk] ther in theory

[mwDUw] r in practice.

[Progress-80] 1 2 Progress increases cost-effectiveness and is reflected in the ratio of forward gears to main components.
It depends on the power flow:
parallel: using the two degrees of freedom of planetary gearsets
to increase the number of gears

with unchanged number of components

serial: in-line combined planetary gearsets without using the two degrees of freedom
to increase the number of gears

a corresponding increase in the number of components is unavoidable

[mwDVw] parallel: using the two degrees of freedom of planetary gearsets
to increase the number of gears

with unchanged number of components

[mwDWA] to increase the number of gears

[mwDWE] with unchanged number of components

[mwDWI] serial: in-line combined planetary gearsets without using the two degrees of freedom
to increase the number of gears

a corresponding increase in the number of components is unavoidable

[mwDWY] to increase the number of gears

[mwDWc] rresponding increase in the number of components is unavoidable

[APT-82] 1 2 3 4 8AP T: Automatic Powershift Transmission for Trucks

[Torque-84] 1 2 higher torque on demand

[87] 8AP S: Automatic Powershift Transmission for Special Vehicles

[22] ZF CFT 23 (https://gearboxlist.com/zf/cft23/ · Retrieved 2024-11-16)

[24] ZF CFT 30 (https://gearboxlist.com/zf/cft30/ · Retrieved 2024-11-16)

[28] ZF 7DT-45 (https://gearboxlist.com/zf/7dt-45/ · Retrieved 2024-11-16)

[36] ZF 7DT-70 (https://gearboxlist.com/zf/7dt-70/ · Retrieved 2024-11-16)

[39] ZF 7DT-75 (https://gearboxlist.com/zf/7dt-75/ · Retrieved 2024-11-16)

[42] ZF 8DT-80 (https://gearboxlist.com/zf/8dt-80/ · Retrieved 2024-11-16)

[46] ZF 8DT-55 (https://gearboxlist.com/zf/8dt-55/ · Retrieved 2024-11-16)

[1] Streather, Adrian (2006). Ford GT: Then, and Now – Adrian Streather – Google Books. Veloce Publishing Limited. ISBN 9781845840549. Retrieved 24 May 2016.

[2] Cupler, Justin (22 August 2012). "1964 – 1969 Ford GT40 | car review @ Top Speed". TopSpeed.com. Retrieved 24 May 2016.

[3] "BMW Parts Catalogue". Archived from the original on 14 January 2016.

[4] "Online BMW Parts Catalog".

[18] "ZF 6HP28". ZF Friedrichshafen AG. Archived from the original (PDF) on 7 June 2021. Retrieved 18 September 2009.

[19] "ZF 6HP34" (PDF). ZF Friedrichshafen AG. Retrieved 18 September 2009.^{[permanent dead link]}

[gearboxlist-21] 1 2 3 4 5 6 7 "Gearboxlist".

[25] "ZF 7-speed dual-clutch transmission". ZF Friedrichshafen AG. ZF.com. Archived from the original on 23 May 2010. Retrieved 15 November 2009.

[JustAuto_ZF-26] 1 2 3 4 5 "FEATURE: ZF's new 7DT 'Mood-Sensing' Dual-Clutch Transmissions". CSM Worldwide. Just-Auto.com. 23 September 2009. Retrieved 15 November 2009.

[DTCfacts-27] 1 2 "Porsche Joins the DCT Set". The Lubrizol Corporation. DCTfacts.com. Archived from the original on 1 October 2009. Retrieved 15 November 2009.

[29] "Top 911 moves to industry-standard shift controls". The Lubrizol Corporation. DCTfacts.com. 24 September 2009. Archived from the original on 16 October 2009. Retrieved 28 October 2009.

[30] "ZF in the Porsche 911 Carrera: Porsche Carrera – Versatility with sports car genetics". ZF Friedrichshafen AG. ZF.com. Archived from the original on 21 August 2009. Retrieved 28 October 2009.

[PorschePress-31] "New Porsche 911 with Direct Fuel Injection and Double-Clutch Gearbox" (Press release). Porsche Cars Great Britain Ltd. / Dr. Ing. h.c. F. Porsche AG. 6 June 2008. Retrieved 31 October 2009.

[PorschePDK_Glossary911-32] "Porsche Doppelkupplung (PDK) – 911 Carrera & 911 Targa 4 Models". Dr. Ing. h.c. F. Porsche AG. Porsche.com. Archived from the original on 18 June 2008. Retrieved 20 November 2019.

[33] "2009 Porsche Carrera PDK Transmission" (YouTube video interview with Porsche official). Roadfly.com/YouTube, LLC. Archived from the original on 19 December 2021. Retrieved 28 October 2009.

[Porsche.com-37] 1 2 "The new 911 Turbo. Efficiency demands performance". Dr. Ing. h.c. F. Porsche AG. Porsche.com. Archived from the original on 10 August 2011. Retrieved 7 November 2009.

[ZF_Press_Release-41] 1 2 "ZF Starts Production of the New 8-Speed Dual-Clutch Transmission at the Brandenburg Location" (Press release). Brandenburg: ZF Press Release. 16 June 2016. Retrieved 9 September 2016.

[43] "Porsche Panamera 4S - 8-Gang Porsche Doppelkupplungsgetriebe (PDK) - Porsche Deutschland". Archived from the original on 23 September 2016. Retrieved 9 September 2016.

[44] Ewing, Mark (30 August 2017). "All-New Bentley Continental: 626 HP 207 MPH Second Cousin to the Porsche Panamera". Forbes. Retrieved 27 March 2018.

[47] "Porsche 911 Carrera S · Technical Specifications 2020" (PDF). Retrieved 16 November 2024.

[48] "Porsche 911 Carrera S · Technical Specifications 2020" (PDF). Retrieved 16 November 2024.

[50] "ZF unveils new 8-speed automatic gearbox". PaulTan.org. 3 May 2007. Retrieved 18 September 2009.

[51] "The freedom to exceed limits". ZF Friedrichshafen AG. Archived from the original (PDF) on 19 April 2021. Retrieved 18 September 2009.

[Generation-53] 1 2 3 4 5 2nd Generation and 3rd Generation "Efficient And Dynamic · ZF Gearbox Brochure" (PDF). 1 September 2017. Archived from the original (PDF) on 14 December 2018. Retrieved 7 July 2019.

[racing-54] "Durable and fast - ZF Race Transmissions" (PDF). Archived from the original (PDF) on 11 December 2023.

[9HP1-56] 1 2 "ZF Friedrichshafen AG | Press Release Products". Zf.com. 31 December 2010. Retrieved 11 July 2012.

[9HP2-57] 1 2 "ZF Friedrichshafen AG | 9HP - Innovation with nine speeds". Archived from the original on 16 August 2011. Retrieved 25 August 2011.

[9HP3-58] 1 2 "ZF 9-Speed Automatic Transmission for Chrysler and Dodge cars". Allpar.com. Retrieved 11 July 2012.

[59] "The first-ever BMW XM". 28 September 2022. Retrieved 15 November 2024.

[60] "Technical Specifications · BMW XM". 28 September 2022. Retrieved 15 November 2024.

[61] "The all-new BMW M5". 26 June 2024. Retrieved 15 November 2024.

[62] "Technical Specifications · BMW M5". 26 June 2024. Retrieved 15 November 2024.

[64] "Progress and efficiency with added variety: additional drive system variants and innovations for the new BMW 7 Series". 28 September 2022. Retrieved 15 November 2024.

[65] "Technical specifications · BMW 7 series · 740d xDrive". 28 September 2022. Retrieved 15 November 2024.

[66] "Technical Data: Alpina Automobiles". 2024. Retrieved 15 November 2024.

[68] "Trucks | Truck | Ecolite for Light Trucks – ZF Friedrichshafen AG". Zf.com. Archived from the original on 16 December 2013. Retrieved 24 May 2016.

[69] "Trucks | Truck | Ecomid – ZF Friedrichshafen AG". Zf.com. Archived from the original on 15 March 2013. Retrieved 24 May 2016.

[70] "Trucks | Truck | Ecosplit – ZF Friedrichshafen AG". Zf.com. Archived from the original on 11 December 2012. Retrieved 24 May 2016.

[71] "ZF-EcoLife" (PDF). autosurdelevante.com. Retrieved 1 September 2024.

[72] "EcoLife 2 - ZF". www.zf.com. Retrieved 1 September 2024.

[73] "EcoLife Offroad 2" (PDF). www.zf.com. Retrieved 1 September 2024.

[81] ttps://www.zf.com/master/media/products_1/commercial_vehicles/footer_1/brochures_trucks_buses/2020_3/TT_Product_Overview_DE_EN_LowRes.pdf · p. 7

[8AP_torque-83] "8 Speed Automatic Powershift Transmission - PowerLine" (PDF). Archived from the original (PDF) on 28 June 2023.

[85] Efficient Torque Converter Automatic Transmission for Commercial Vehicles (ZF 8AP) · Winfried Gründler · Herbert Mozer · Frank Sauter: ATZ worldwide 06/2017 · pp. 36–39

[86] "The New Driving Experience" (PDF). Archived from the original (PDF) on 28 June 2023.

[88] "ZF AS Tronic". ZF Friedrichshafen AG. ZF.com. Archived from the original on 24 January 2010. Retrieved 30 November 2009.

List of ZF transmissions

Passenger cars and light commercial vehicles

Manual transmissions

4-speed longitudinal

5-speed longitudinal

6-speed longitudinal

7-speed longitudinal

Automatic transmissions

Nomenclature

Specifications

Heavy vehicles

Manual synchromesh transmissions for trucks

5-speed & 6-speed (ZF Ecolite)

9-speed (ZF Ecomid)

12-speed & 16-speed (ZF Ecosplit)

Manual synchromesh transmissions for tanks

6-speed

7-speed

Automatic transmissions

2-speed automatic transmission

4- to 6-speed Ecomat series

6- & 7-speed EcoLife series

8-speed PowerLine series

12-speed AMT

See also

Notes

References

External links