Definition of clutch

Jan 30, 2024

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Clutch, commonly known as Ligzi in Hong Kong, is derived from English Clutch, and Taiwanese is often called by Lizi or Japanese クラッチ, which is a device that transmits the engine power of a car or other power machinery to the axle by means of a switch.


The clutch is installed between the engine and the transmission, and is the assembly in the drive train of the car that is directly connected to the engine. Usually the clutch is installed together with the flywheel group of the engine crankshaft, which is the component that cuts off and transmits power between the engine and the drive train of the car. During the entire process from the start of the car to normal driving, the driver can manipulate the clutch as needed to temporarily separate or gradually engage the engine and the drive train to cut off or transfer the power output from the engine to the drive train. Its function is to make the engine and the transmission can be gradually engaged, so as to ensure the smooth start of the car; temporarily cut off the connection between the engine and the transmission, so as to facilitate the shift and reduce the impact when shifting; when the car is braking in an emergency, it can play a separate role to prevent the transmission and other transmission systems from overloading, so as to play a certain protective role.


The clutch is similar to a switch, engagement or disconnection of power transmission, the active part of the clutch mechanism and the driven part can be temporarily separated, and can be gradually engaged, and it is possible to rotate relative to each other during the transmission process. There can be no rigid connection between the active part of the clutch and the driven part. Any form of car has a clutch, it's just in a different form.