Auto parts Transmission solenoid valve Speed solenoid valve 13150568

The role of the automotive transmission solenoid valve is to control the mechanical valve to complete the switching of the oil circuit and the pressure regulation of the oil circuit flow, which is controlled by the transmission electronic control module TCU. Transmission refers to the transmission, is used to change the speed and torque from the engine mechanism, can fix or shift change the output shaft and input shaft transmission ratio, which is composed of variable speed transmission mechanism and control mechanism. The types of transmission are: 1, according to the change of transmission ratio can be divided into: stepwise transmission, stepless transmission, comprehensive transmission; 2, according to the control mode can be divided into: forced control type transmission, automatic control type transmission, semi-automatic control type.

The role of the automatic transmission solenoid valve is to adjust the oil pressure and the smoothness of the shift.

The solenoid valve is controlled by the transmission electronic control module TCU, and the neutral and gear pressure are basically a constant value. When shifting, the smoothness of the shift can be improved by adjusting the opening of the solenoid valve. Different solenoid valves control different clutches or brakes and play a role in different gears.

Each gear is controlled by one or more solenoid valves. The classification of solenoid valves includes switch type and pulse type. The switching solenoid valve energizes the internal coil of the battery valve through a certain current or voltage, and then drives the internal needle valve or ball valve to displace, thereby blocking or opening the oil circuit.

Mainly used to control shift and shift. The pulsed solenoid valve adjusts the oil pressure by current duty cycle and frequency control. In short, the automatic transmission solenoid valve is an important part of the control of the car shift smoothness and oil pressure