The oil supply system of automatic transmission is mainly composed of oil pump, oil tank, filter, pressure regulator and pipeline. The oil pump is one of the most important assemblies of an automatic transmission, which is usually installed behind the torque converter and driven by a bushing at the rear end of the torque converter housing. When the engine is running, whether the car is running or not, the oil pump is running, providing a certain amount of hydraulic oil to the torque converter, shift actuator, and automatic shift control system part of the automatic transmission.
Automatic transmission is generally inseparable from the hydraulic system, and the hydraulic oil of the hydraulic system is provided by the oil supply system, so the oil supply system is one of the indispensable and important parts of the automatic transmission.
The composition of the oil supply system is different because of its different uses, but the main components are basically the same, generally composed of each branch oil supply system, oil pump and auxiliary device, pressure regulating device and other parts. The function of the oil supply system is to supply oil to the transmission and maintain sufficient compensation pressure and flow to ensure that the hydraulic element completes the function of transmitting power; Prevent cavitation generated by the torque converter, and take away the heat of the torque converter in time to maintain the normal operating temperature. In some construction vehicles and heavy transport vehicles, it is also necessary to provide sufficient flow and temperature suitable oil to the hydraulic reducer, so that it can absorb the kinetic energy of the vehicle in a timely manner and obtain a satisfactory braking effect. Supply oil to the control system, and maintain the working oil pressure of the main oil circuit to ensure the smooth operation of each control mechanism. Ensuring oil supply to shift clutches, etc., to meet the control needs of gear shifting, etc. Provide lubricating oil for the moving parts of the entire transmission such as gears, bearings, thrust gaskets, clutch friction plates, etc., and ensure normal lubricating oil temperature. Through the circulating heat dissipation and cooling of the oil, the heat of the entire automatic transmission can be dissipated, so that the transmission can be kept within a reasonable temperature range.
The oil pump is one of the most important components of an automatic transmission, it is usually installed behind the torque converter, driven by a bushing at the rear end of the torque converter housing. In the oil supply system of the transmission, the commonly used oil pumps are internal gear pumps, rotary lobe pumps and vane pumps.
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Post time: Nov-21-2022