Auto transmission and differential

Auto transmission and differential

The control components of the automatic transmission consist of clutches, multiple disc brakes, band brakes and free wheels, which prevent the relative rotation between two components of the epicyclic gear sets, or between one of them and the outer casing, to achieve the four forward gears and reverse gear.

Clutches

Four clutches are used in the AISIN automatic transmission, and they are all of the multiple disc type. They are activated by the valve assembly located in the gearbox hydraulic control system.

When engaged, the clutch C1 couples the gearbox input shaft E to the clutch carrier drum D.

When engaged, the clutch C2 couples the gearbox input shaft E with the shaft E on which there are the two sun gears S1 and S2 of the gear sets P1 and P2.

When engaged, the clutch C3 couples the clutch carrier drum D with the crownwheel K1 of the epicyclic gear set P1; in this way the crownwheel K1 receives motion from the gearbox input shaft E through C1-C3.

When engaged, the clutch C0 couples the clutch carrier drum D with the crownwheel K2 of the epicyclic gear set P2; in this way the crownwheel K2 receives the motion from the gearbox input shaft E through C1-C0.