Large metal adjustment block

The role of metal adjustment: significantly reduce engine noise and vibration, save fuel, improve engine cold start performance, and extend engine service life.

The function of the fan clutch is to use the high viscosity characteristics of silicone oil to transmit torque. When the temperature rises, the silicone oil will connect the two shafts together, allowing the fan to rotate. At the same time, it can reduce noise and improve engine economy. For engine-driven fans , usually a fan clutch is used to control its speed. When the car is driving, due to changes in environmental conditions and operating conditions, the thermal conditions of the engine are also changing. Therefore, the cooling intensity of the engine must be adjusted at any time.

Part One: Preliminary Knowledge Reserve A rough understanding of the fan clutch and its function: The fan clutch uses silicone oil as a medium and uses the high viscosity characteristics of silicone oil to transmit torque.

The temperature of the air behind the radiator is used to automatically control the separation and engagement of the fan clutch through the temperature sensor.

When the temperature is low, the silicone oil does not flow, the fan clutch is separated, and the fan speed slows down, basically idling. When the temperature is high, the viscosity of the silicone oil causes the fan clutch to engage, so the fan and water pump shaft rotate together to regulate the engine temperature.

The fan clutch and temperature sensing elements are bimetallic coil spring temperature sensors. Its working process:

(1) When the temperature of the air flowing through the radiator rises, the bimetal thermometer is heated and deformed, forcing the valve shaft to rotate and opening the oil inlet hole on the driven plate. The silicone oil stored between the driven plate and the front cover flows into the working chamber between the active plate and the driven plate, the clutch is engaged, and the fan speed increases. The higher the air temperature, the larger the opening of the oil inlet hole, and the faster the fan speed.

(2) When the temperature of the air flowing through the radiator drops, the bimetal thermometer returns to its original state, and the valve plate closes the oil inlet hole. Under the action of centrifugal force, the silicone oil returns from the working chamber to the oil storage chamber through the oil return hole, and the clutch is separated. , the fan speed becomes very low.

Clutch The clutch is located in the flywheel housing between the engine and the gearbox. The clutch assembly is fixed on the rear plane of the flywheel with screws. The output shaft of the clutch is the input shaft of the gearbox.

While the car is driving, the driver can depress or release the clutch pedal as needed to temporarily separate and gradually connect the engine and the transmission to cut off or transmit the input from the engine to the transmission.

Extensive and detailed understanding of the clutch family defines the function of the clutch. The clutch is installed between the engine and the transmission. It is an assembly in the automobile transmission system that is directly connected to the engine. Usually the clutch is installed together with the flywheel set of the engine crankshaft to cut off the connection between the engine and the vehicle's