Hydraulic control device in automatic transmission in vehicle eq

Details Hydraulic control device in automatic transmission in vehicle eq Hydraulic control device in automatic transmission in vehicle eq

1990-07-30

1991-07-09

Diehl, Dwight

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74866, B60K 4106

Patent

active

050294938

ABSTRACT:
In a vehicle in which opening of an intake throttle valve is controlled in accordance with stepping-on amount of an accelerator pedal by way of an electronic throttle opening control device, a hydraulic pressure control device is provided so as to detect a discrepancy between the stepping-on amount of the accelerator pedal and the opening of the intake throttle valve and to automatically cancel supply of hydraulic pressure to a selected one of friction engaging devices of an automatic transmission of the vehicle when the discrepancy exceeds a certain allowable limit value.

REFERENCES:
patent: 4072220 (1978-02-01), Hamada
patent: 4194608 (1980-03-01), Usui et al.
patent: 4342298 (1982-08-01), Ganoung
patent: 4703304 (1987-10-01), Muguruma et al.

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