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Powertrain Products (Transmission Devices)

Transmission Devices

Linear Solenoid Valve for AT

This is a control module for a 6-speed automatic transmission. It aggregates the features of four linear solenoid valves and three shift solenoids. While small and light weight, it precisely regulates the gear shifts required for the transmission and the clutch hydraulic pressure, and is compatible with the trend of increased number of gear shift stages.
In addition, we address emissions standards and fuel efficiency by offering a lineup of optimized linear solenoids optimized for applications such as use in high response types.

Linear Solenoid Valve for CVT

This exerts hydraulic pressure with high precision according to the instructions of the ECU, and controls the belt pulley hydraulic pressure and clutch pressure of the continuously variable transmission (CVT) . A damper effect is generated by orifices (small holes) provided in the the oil discharge side in an effort to reduce hydraulic vibration.

Solenoid Valve

In an automatic transmission (AT), this operates the shift valve so as to switch oil channels according to commands from the ECU, and gears are shifted.
As a way of satisfying fuel efficiency regulations, the weight of the solenoid body has been reduced by changing its material from iron to aluminum, and magnetic efficiency has been increased by redesigning the magnetic path, enabling reduction of coil space in size. Also, the high thrust solenoid design enables control of hydraulic pressure over a wide range, and oil flow at low temperatures is ensured and highly-responsive switching of the shift valve is delivered by optimizing the valve settings.