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What is the clutch free travel?

1 Answers

LeClara

07/25/25 12:14am

Generally, the free travel of a car's clutch pedal is 15-25mm. The free travel of the clutch pedal refers to the gap between the inner end of the clutch diaphragm spring and the release bearing as reflected on the pedal. When the clutch pedal is initially depressed, there is a portion of the travel where no work is done before the clutch begins to engage and cut off power transmission. This portion is known as the clutch pedal's free travel. Working principle of an automotive clutch: The clutch's driving and driven parts transmit torque through friction between contact surfaces, using liquid as a transmission medium (hydraulic coupling), or magnetic transmission (electromagnetic clutch). This allows temporary separation and gradual engagement while permitting relative rotation between the two parts during transmission. Currently, spring-loaded friction clutches (commonly referred to as friction clutches) are widely used in automobiles. The engine's torque is transmitted to the driven plate through friction between the flywheel, pressure plate, and driven plate contact surfaces. When the driver depresses the clutch pedal, mechanical components cause the diaphragm spring's large end to move the pressure plate backward, separating the driven part from the driving part.

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