Epicyclic change-speed gearbox automatic gear-changing arrangeme

Details Epicyclic change-speed gearbox automatic gear-changing arrangeme Epicyclic change-speed gearbox automatic gear-changing arrangeme

1993-12-10

1995-09-12

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477110, 477156, 477149, 475 60, 475125, F16H 5918

Patent

active

054493307

ABSTRACT:
In an arrangement for automatically changing gear in an epicyclic change-speed gearbox from a previous gear, in which a first frictional connection (clutch or brake) is engaged, into another gear, in which a second frictional connection is engaged, the working pressure for engaging the first frictional connection is switched off when the working pressure for engaging the second frictional connection reaches a significant pressure value. The pressure value is determined by comparison with a reference parameter which depends on the load torque.

REFERENCES:
patent: 5079970 (1992-01-01), Butts et al.
patent: 5085105 (1992-02-01), Wakahara et al.

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