Powertrain and control having a plurality of accumulators

Details Powertrain and control having a plurality of accumulators Powertrain and control having a plurality of accumulators

1993-06-21

1995-02-28

Look, Edward K.

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

74335, 477150, F16H 6106

Patent

active

053932730

ABSTRACT:
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, such as a clutch or brake. The engagement timing of each friction device is controlled in part by an accumulator. Each accumulator is disposed to accommodate friction devices, such that five forward speed and one reverse speeds require only a maximum of three accumulators.

REFERENCES:
patent: 5109733 (1992-05-01), Ishikawa et al.
patent: 5176046 (1993-01-01), Fujiwara et al.
patent: 5205192 (1993-04-01), Ohashi et al.

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