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The clutch pedal controls the pressure plate (clutch engaged – the clutch pedal is not being pressed) or not connected to the engine (clutch disengaged – the clutch pedal is being pressed down). When the engine is running and the clutch is engaged (i.e., clutch pedal up), the flywheel spins the clutch pressure plate and hence the transmission.
Clutch control is the controlling of the speed of a manual transmission vehicle by partially engaging the clutch plate, using the clutch pedal instead of (or in conjunction with) the accelerator pedal. The purpose of a clutch is in part to allow such control; in particular, a clutch provides transfer of torque between shafts spinning at ...
Semi-automatic transmissions are mechanically the same as a conventional manual transmission, but do not have a manually-operated clutch mechanism; instead facilitating the driver, by using automation system to control the clutch. These systems still require the driver's input and involvement for manually changing gear ratios, though, and will ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Mechanical device that connects and disconnects two rotating shafts or other moving parts For other uses, see Clutch (disambiguation). Friction disk for a dry clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's ...
The dead pedal became more important with time as stronger and faster cars were developed because the left foot must push against the floor to brace the driver's body. Racing cars and civilian cars with manual transmission systems will have the dead pedal. Cars equipped with an automatic transmission may also have a dead pedal.
The I-Shift Dual Clutch has two input shafts which are alternatively connected to the engine through two clutches. When driving, the first gear is engaged by one input shaft while the other one pre-selects the next gear. At the actual gear change, the previously engaged clutch is disengaged as the idling clutch is engaged at the same time.
Once the engine has turned over and is running, the overrun clutch releases the starter from the flywheel and prevents the gears from re-meshing (as in an accidental turning of the ignition key) while the engine is running. A freewheel clutch is now used in many motorcycles with an electric starter motor. It is used on many combustion-engined ...
Before the introduction of transmission synchronizers in 1927, [2] double clutching was a technique required to prevent damage to an automobile's gearing during shifts. Due to the difficulty and most often unnecessary redundancy involved in the technique, coupled with the advent of synchronized gearing systems, it has largely fallen into disuse in light vehicles.