Electrohydraulic brake booster and method of controlling same fo

Details Electrohydraulic brake booster and method of controlling same fo Electrohydraulic brake booster and method of controlling same fo

1998-02-20

1999-12-28

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 3, 3031134, 188358, F16D 3102

Patent

active

060071605

ABSTRACT:
A method of controlling the operation of an electrohydraulic brake booster to achieve a desired pedal feel. The method includes sensing brake pedal movement from a fully retracted rest position before a significant resistance to travel of the brake pedal is developed. The method further includes generating a command pulse that results in application of pressurized hydraulic fluid to the boost piston assembly sufficient to overcome preloaded spring forces and seal friction in the boost piston assembly that would otherwise tend to resist further brake pedal travel. The method further includes providing a control signal override when a brake pedal "bounce" condition is detected to avoid undesired vehicle braking. A brake pedal bounce condition may occur if the brake pedal is released suddenly so that the brake pedal returns to the fully retracted rest position rapidly enough to bounce off of a mechanical stop at that position and move in the brake apply direction.

REFERENCES:
patent: 4311085 (1982-01-01), Runkle
patent: 5709438 (1998-01-01), Isakson et al.
patent: 5855420 (1999-01-01), Lawrence
Article entitled Hydraulics Offer Advantages in Power Brake Boosters by A. K. Brown, L. G. Bach, and D. J. Baker, published in "Society of Automotive Engineers", Paper No. 730536, May 14, 1973.

Affiliated with

Also associated with

Rating

Electrohydraulic brake booster and method of controlling same fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrohydraulic brake booster and method of controlling same fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrohydraulic brake booster and method of controlling same fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2377478