The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 1991
Filed:
Oct. 20, 1989
Applicant:
Inventors:
Koji Tanaka, Toyko, JP;
Takashi Shima, Toyko, JP;
Assignee:
Isuzu Motors Limited, Toyko, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303-3 ; 180165 ; 303100 ; 36442604 ;
Abstract
A regenerative braking system for a car in which overall braking torque required for a pump/motor is determined and the pump/motor is controlled to have its maximum pumping capacity. An electromagnetic proportional air control valve is used to supplement the short capacity when the pumping capacity for the overall braking torque exceeds the maximum capacity and a brake pedal is operated. The control valve is exclusively used for conventional braking in response to the position of the brake pedal when the car speed is below a predetermined low speed.