Automatic selector device of a change-speed gearbox of a motor v

Details Automatic selector device of a change-speed gearbox of a motor v Automatic selector device of a change-speed gearbox of a motor v

1992-07-23

1993-04-06

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

192 85R, 13759616, B60K 2010

Patent

active

051993139

ABSTRACT:
In an automatic selector device of a motor vehicle change-speed gearbox, a frictional connection (i.e., a clutch or brake) which can be engaged and disengaged by a gear retention control valve is held in the instantaneous position on the occurrence of a fault in an electronic control unit. An auxiliary control force for actuating the gear retention control valve is obtained from a magnetic force of an electromagnetic control valve for the gear change. The electromagnetic valve is dependent on the control unit.

REFERENCES:
patent: 3918488 (1975-11-01), Minami
patent: 4560047 (1985-12-01), McCarthy et al.
patent: 5035312 (1991-07-01), Asayama et al.
patent: 5036965 (1991-08-01), Cortesi et al.

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