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A commercial push-button-based electronic shift selector made by Allison Transmission. Shift-by-wire is an automotive concept or system that employs electrical or electronic connections that replace the mechanical connection between the driver's gearshift mechanism and the transmission.
A standard 5-speed shift pattern (on a Peugeot 206 knob). A gear stick (rarely spelled gearstick), [1] [2] gear lever (both UK English), gearshift or shifter (both U.S. English), more formally known as a transmission lever, is a metal lever attached to the transmission of an automobile.
Automated manual transmissions can be semi-automatic or fully-automatic in operation. Several different systems to automate the clutch and/or shifting have been used over the years, but they will generally use one of the following methods of actuation for the clutch and/or shifting: hydraulic or electro-hydraulic actuation, [12] electro-mechanical, [13] pneumatic, [6] [14] [15] electromagnetic ...
Pushing a button on the shift control preselected the chosen gear. The electrical circuit was closed only after the driver fully depressed the clutch pedal. This energized the appropriate transmission mounted solenoids necessary for returning the transmission to neutral and then completing engagement of the preselected gear.
The first mass-production dual-clutch transmission design was introduced with the 4th-generation Volkswagen Golf R32 in 2003, with the direct-shift gearbox. Some automatic transmission vehicles have extra controls that modify the choices made by the transmission system. These controls depend on the engine and road speed.
Switching between automatic and manual transmission modes is by moving the shift lever to the bottom that then allows upshifts and downshifts by moving the lever left and right. [9] The system works with shifter down into a gated area on the shift assembly that allows the shifter to be pushed to the right (up-shift) or to the left (down-shift ...