In Drive 2, the transaxle drive is through the input shaft and clutch E. The elements of this transaxle operation are as follows:
- Clutch E is applied to drive the front ring gear.
- The front ring gear drives the front planetary gear carrier.
- The front planetary gear carrier drives thedifferential pinion gear clockwise.
- Brake F is applied, holding the front sun gear stationary.
Clutch E Engaged
Solenoid 2 is switched OFF. Line pressure flows from the reduction valve to the inlet port of clutch valve E. Fluid passes through the clutch valve, and clutch E engages.
Clutch F Engaged
Pressure control solenoid 5 is switched ON. The line pressure, which passed through the reduction valve, flows to the holding valve and to the clutch valve inlet, depressing the valve spool.
Lock-up Clutch (TCC)
Solenoid 2 is turned ON and the spool to the line pressure control valve is depressed. Fluid now flows through the torque converter pressure valve.
As a result the oil pressure behind the converter lock-up clutch piston equals the pressure in the turbine zone. Oil flows through the turbine shaft and through the space behind the piston to the turbine chamber.
Lubrication/Cooling
The lubricating valve ensures that the converter is supplied with cooling oil first if the pump rate is low. The lubricating pressure valve also guarantees that the necessary amount of cooling and lubricating oil is available through the bypass duct.
The fluid which is supplied from the torque converter flows to the cooler through the lubrication valve.
