for Nissan Valve Body Parts CVT Transmission JF015e RE0f11A Transmission Solenoid Valve Kit

    The role of the solenoid valve in the gearbox is to adjust the opening of the solenoid valve during the shift process to improve the smoothness of the shift. Different solenoid valves control different clutches or brakes, and play a role in different gear, each gear is controlled by one or several solenoid valves
   The solenoid valve is controlled by the transmission electronic control module TCU. The pressure of the basic overhead gear and shift is constant, but the opening of the solenoid valve is adjusted during the shift process to improve the smoothness of the shift. 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.
   In hydraulic system, solenoid valve is divided into pilot control and direct drive control. Pilot solenoid valve control pressure and flow rate is relatively low, can not directly drive the actuator, can only provide pilot control pressure.
   The direct-drive solenoid valve has a larger electromagnetic force than the pilot valve, and the control pressure and flow can directly drive the actuator. Hydraulic systems using direct drive solenoid valves reduce the number of mechanical valves and simplify the structure of the system.