Braking system for electric vehicle

Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

180 651, 180165, 188156, 188159, 303 20, 303100, B60T 1374, B60T 858, B60L 710

Patent

active

054335124

ABSTRACT:
In an electric vehicle capable of regenerative braking of wheels, a differential pressure regulating valve is interposed between a master cylinder for generating a hydraulic braking pressure by operation of a brake operating element and a brake cylinder for a driven wheel. In a first region in which an input hydraulic pressure into the differential pressure regulating valve is equal to or less than a predetermined value, an output hydraulic pressure from the differential pressure regulating valve is maintained at zero, and in a second region in which the input hydraulic pressure exceeds the predetermined value, the output hydraulic pressure is lower than the input hydraulic pressure by the predetermined value. Further, in the first region, a regenerative braking force is determined in proportion to a quantity of operation of the brake operating element, and in the second region, the regenerative braking force is maintained at a constant value irrespective of the quantity of operation of the brake operating element. Thus, the regenerative braking force is preferentially generated at the start of braking, and after the regenerative braking force reaches a limit, a deficiency of braking force can be made up by the hydraulic braking force. Moreover, a sum total of the hydraulic braking force and the regenerative braking force can be proportioned to the quantity of operation of the brake operating element.

REFERENCES:
patent: 3621929 (1971-11-01), Oberthur
patent: 4005759 (1977-02-01), Farr
patent: 4181366 (1980-01-01), Dobner
patent: 4270806 (1981-06-01), Venkataperumai et al.
patent: 4962969 (1990-10-01), Davis
patent: 5024489 (1991-06-01), Tanaka et al.
patent: 5148883 (1992-09-01), Tanaka et al.
patent: 5253929 (1993-10-01), Ohori
patent: 5294191 (1994-03-01), Giorgetti et al.
patent: 5312167 (1994-05-01), Giorgetti et al.
patent: 5318355 (1994-06-01), Asanuma et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Braking system for electric vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Braking system for electric vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Braking system for electric vehicle will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2416799

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.