Hydraulically operated control system of automatic transmission unit with six forward gears, comprises three proportional solenoid valves

摘要

The system has a first clutch (C1) with a control section (E) regulating the pressure for four forward gears with a proportional solenoid valve (DS1). The pressure for the three forward gears, the reverse gear and an L-gear is regulated with a second valve (DS2) in a second control section (F) with a first brake (B1) and the third clutch (C3). Two forward gears and the reverse gear are regulated in a third control area (G) and a second clutch (C2) and a third valve (DS3). The pressure for the second brake (B2) and the second and sixth forward gear is controlled in a fourth control section (H).