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The modern usage of the automotive term manumatic denotes an automatic transmission that allows the driver to select a specific gear, typically using paddle-shifters, steering wheel-mounted push-buttons, or "+" and "-" controls on the gear selector.
Manual – the driver has to perform each gear change using a manually operated clutch Automatic – once placed in drive (or any other 'automatic' selector position), it automatically selects the gear ratio dependent on engine speed and load
A Hydra-Matic 4L80 transmission at the Ypsilanti Automotive Heritage Museum The 4L80-E ( RPO MT1) is rated to handle engines with up to 440 ft·lbf (597 N·m) of torque. [ 2 ] The 4L80-E is rated to a maximum GVWR of 18,000 lb, depending on the axle and vehicle.
The 1941 Chrysler M4 Vacamatic transmission was a two-speed manual transmission with an integral underdrive unit, a traditional manual clutch, and a fluid coupling between the engine and the clutch. [ 51 ] [ 52 ] [ 53 ] The two-speed transmission had "high" and "low" ranges, and the clutch was used when the driver wanted to switch between ranges.
The 6L 50 (and similar 6L 45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors.It is very similar in design to the larger GM 6L 80 and 6L 90, and is produced at GM Powertrain plants in Toledo, Ohio; Silao, Guanajuato, Mexico; and by the independent Punch Powerglide company in Strasbourg, France.
The 4L30-E was an automatic transmission developed and produced by General Motors.It was developed for light-duty use in longitudinal engine rear-wheel drive vehicles, replacing the similar TH180/3L30.
Designed for transverse engine configurations, the series includes 4 gear bearing overdrive [1] [2] 2 electronic shift solenoids, and electronic force motor to control line pressure. [3] The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the 1980 model year "X" body.
This was a later model of the 125 that debuted for 1982 and included a torque converter clutch or TCC. The TCC acts similar to a clutch in a manual transmission vehicle, in that at speeds above 35 MPH a combination of engine vacuum- and temperature-sensing valves, and a dedicated brake switch - and in later models an ECU - activated a solenoid which engaged a clutch physically locking the ...