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It was designed and manufactured by General Motors, equipped on automobiles starting with the 2017 model year; the 9TXX family was developed from an earlier joint GM–Ford 6-speed automatic transmission. Ford sells derivatives of the 9TXX with one forward speed removed as the 8F family.
The hydraulic motor is the rotary counterpart of the hydraulic cylinder as a linear actuator. Most broadly, the category of devices called hydraulic motors has sometimes included those that run on hydropower (namely, water engines and water motors) but in today's terminology the name usually refers more specifically to motors that use hydraulic ...
A 3-speed light-duty version of the Turbo Hydra-Matic, called the Turbo-Hydramatic 180 was produced by GM's Hydra-Matic division from 1981 to 1998 for use in a wide variety of small cars and trucks. Hydramatic is a trade name for GM's automatic transmission division, which produces a variety of transmissions, the most notable of which is the ...
The stall speed is defined as the highest speed at which the pump can turn when the output turbine is locked and full input torque (at the stall speed) is applied. Under stall conditions all of the engine's power at that speed would be dissipated in the fluid coupling as heat, possibly leading to damage.
The most common design of automatic transmissions is the hydraulic automatic, which typically uses planetary gearsets that are operated using hydraulics. [ 11 ] [ 12 ] The transmission is connected to the engine via a torque converter (or a fluid coupling prior to the 1960s), instead of the friction clutch used by most manual transmissions and ...
The first five-speed automatic was the ZF 5HP18 transmission, debuting in 1991 on various BMW models. The first six-speed automatic was the ZF 6HP26 transmission, which debuted in the 2002 BMW 7 Series (E65). The first seven-speed automatic was the Mercedes-Benz 7G-Tronic transmission, which debuted a year later.
The 8HP 70 transmission with the gearset 4 in 23-85-teeth-configuration was the pilot series and therefore without generation designation. It was first used in the BMW 7 Series (F01) 760Li, has a torque handling limit of 700 N⋅m (516 lb⋅ft), and weighs 87 kg (192 lb).
TP POWER TP100XL brushless DC motor [39] 7 kg 15 lb 75 kW 101 hp 9.0 kW/kg 5.5 hp/lb Electric vehicles: Emrax 268 brushless AC motor [40] 19.9 kg 44 lb 230 kW 310 hp 11.56 kW/kg 7.03 hp/lb Electric aircraft: Lucid Motors brushless DC motor [35] 31.4 kg 69 lb 500 kW 670 hp 15.8 kW/kg 9.68 hp/lb Electric vehicle H3X HPDM-250, direct drive [41]