Negative pressure control apparatus for brake booster

Details Negative pressure control apparatus for brake booster Negative pressure control apparatus for brake booster

1999-04-15

2000-09-19

Wright, Dirk

Interrelated power delivery controls, including engine control

Brake control

Sensed condition responsive control of engine of brake

B60T 1352, B60T 712

Patent

active

061204145

ABSTRACT:
A negative pressure control apparatus for a brake booster is provided which can maintain a required negative pressure in the brake booster without unnecessarily increasing the negative pressure of the brake booster. The apparatus has a negative pressure controller for controlling the negative pressure in a negative pressure chamber of the brake booster toward a predetermined target value. A pedal operation determining part determines whether or not both an accelerator pedal and a brake pedal are depressed. When both the accelerator pedal and the brake pedal are depressed, a target negative pressure setting part sets the predetermined target value to be larger than a value used in a regular situation.

REFERENCES:
patent: 3581852 (1971-06-01), Griffen et al.

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