Transmission device for automobile

Abstract

A transmission device for a vehicle includes a clutch for selectively transferring power from an engine to the transmission device, at least two shift rails for causing the transmission device to achieve a plurality of transmission speed ratios, a shift rail actuating member for selectively engaging and actuating one of the shift rails, a clutch actuator selectively actuating the clutch, a select actuator actuating the shift rail actuating member to select one of the shift rails, and a shift actuator, independent of the select actuator, actuating the shift rail actuating member to actuate the selected one of the shift rails. A servo valve controls direction and flow of oil pressure from an oil pressure pump, and first, second and third solenoid valves are disposed between the servo valve and the clutch actuator, select actuator, and the shift actuator, respectively. the clutch actuator, select actuator and shift actuator function based on oil pressure received from the servo valve as regulated by the first, second and third solenoid valves, respectively. A microprocessor controls the servo valve and the first, second and third solenoid valves in accordance with a traveling condition of a vehicle.

Dependencies are inferred from the claim text.