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CVT System Description - Hydraulic Controls
Hydraulic Controls
The hydraulic control system is controlled by the transmission fluid pump, the valves, and the solenoid valves. The transmission fluid pump is driven by the engine turns. The transmission fluid pump drive sprocket is connected to the torque converter cover (pump), turns as the engine turns, and drives the transmission fluid pump driven sprocket with the transmission fluid pump drive chain. The transmission fluid pump supplies hydraulic pressure to the hydraulic circuit. Fluid from the transmission fluid pump passes through the one way valve and the PH regulator valve to the various valves, pulleys, clutch, and reverse brake. The lower valve body assembly include the main valve body, the secondary valve body, the linear solenoid valve body, the clutch reducing valve body, and the transmission fluid pump. These valve bodies are installed on the transmission housing, in the transmission. Main Valve Body
The main valve body contains the TC check valve, the LC shift valve, the LC control valve, the shift inhibitor valve, and the accumulator valve. Secondary Valve Body
The secondary valve body contains the CVT clutch pressure control solenoid valve and the CVT lock-up clutch control solenoid valve. Linear Solenoid Valve Body
The linear solenoid valve body contains the CVT drive pulley control solenoid valve, CVT driven pulley control solenoid valve, the PH regulator valve, the one way valve, the drive pulley regulator valve, the driven pulley regulator valve, the accumulator valve, and the PH control shift valve. Clutch Reducing Valve Body
The clutch reducing valve body contains the shift solenoid valve B, the modulator valve, the relief valve, the CR valve, and the TC regulator valve. Transmission Fluid Pump
The transmission fluid pump contains the vane-type pump assembly, the shift solenoid valve O/P, and the pump shift valve. Manual Valve Body
The manual valve body contains the manual valve. The manual valve body is bolted on the stator shaft flange in the transmission housing. |