Vacuum brake booster

Details Vacuum brake booster Vacuum brake booster

1996-12-18

1998-12-08

Richter, Sheldon J.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Plural input signal means for single motor valve

91376R, B60T 844, B60T 1357, B60T 1368

Patent

active

058455566

ABSTRACT:
A vacuum brake booster with an automatic braking actuation system of the type which includes an electric actuator assembled with a power piston to effect forward movement of a valve plunger assembly when activated under control of an electronic controller, wherein a depression amount of a brake pedal is detected to calculate a depression speed of the brake pedal based on the detected depression amount, and wherein the electric actuator is activated when the calculated depression speed of a brake pedal exceeds a predetermined threshold value and is deactivated when a release amount of the brake pedal is more than a predetermined value.

REFERENCES:
patent: 4633757 (1987-01-01), Kubota
patent: 5350224 (1994-09-01), Nell et al.
patent: 5460074 (1995-10-01), Balz et al.
Rath et al., "Effective Active Safety to Reduce Road Accidents", SAE International Congress and Exposition, 1995, pp. 35-42.

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