Hydraulische Steuereinrichtung für ein Getriebe

摘要

A multi-speed transmission has a hydraulic control system for establishing a plurality of forward drive ratios and a reverse drive ratio. Each drive ratio is established by the engagement of a fluid operated friction device (22,24,26,40,52), such as a clutch or brake. The engagement timing of each friction device is controlled in part by an accumulator (112,114,116). Each accumulator is disposed to accommodate friction devices, such that five forward speed and one reverse speed require only a maximum of three accumulators.