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GM's Automatic Safety Transmission (AST) was a semi-automatic transmission released in 1937. The first mass-produced fully-automatic transmission developed for passenger automobile use was the GM Hydramatic introduced in 1940. [1] The Hydramatic was a big success, and had been installed in the majority of GM models by 1950.
Other examples of semi-automatic transmissions based on hydraulic automatics were the Ford 3-speed Semi-Automatic Transmission used in the 1970–1971 Ford Maverick, early versions of Honda's 1972–1988 Hondamatic 2-speed and 3-speed transmissions, and the Daihatsu Diamatic 2-speed transmission used in the 1985–1991 Daihatsu Charade.
Semi-automatic [ edit ] 1941–1942 M4 Vacamatic — 4-speed (2-range manual control with automatic 2-speed shift vacuum operated) with clutch and fluid coupling ( Fluid Drive ); also known as Simplimatic, Powermatic
This transmission is the subject of a massive number of lawsuits alleging Ford lied in order to sell cars Ford knew had defective transmissions. [8] 2008–present 6DCT450 Ford Powershift (MPS6) 6-speed wet clutch. Ford Focus, Ford Mondeo, Ford Kuga, Ford Galaxy, Ford Fiesta, Ford C-Max, Ford S-Max; Getrag Transmissions 2020 7DCT300 Ford Puma ...
This was quickly changed to "Hondamatic". This gearbox was a separate unit and used ATF - Automatic Transmission Fluid. The company's naming scheme is also confusing, as it is specific to a single model of the vehicle and some identifiers are reused. Below is a list of Honda automatic transmissions: [4] 1973–1979 H2 — 2-speed
The persistent lockup condition under acceleration provides the efficiency and control of a clutch while still behaving much like a traditional planetary automatic transmission. The transmission can also be manually controlled by the driver by providing the ability to select 6 or 7 (if paired with a Diesel engine [ 2 ] ) or 8 different "virtual ...
The transmission is based on the well-known 8-speed automatic transmission 8HP from ZF. A unique triple-clutch assembly on a dedicated intermediate shaft, placed in the middle of the architecture, replaces two ordinary clutches and is the key for packaging the 10-speed unit into the same space as the previous transmission. [8]
The Ford PowerShift are 6 and 7-speed dual-clutch automatic transmissions, produced for the Ford Motor Company. [1] The 6 speed PowerShift gearboxes were built by Getrag Ford Transmissions, a joint-venture with Getrag,. [2] PowerShift improves fuel efficiency by as much as 10 percent when compared to a conventional automatic transmission. [1]