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:
Aug. 04, 2009
Filed:
Jul. 18, 2006
Nobuyuki Nomura, Nagano, JP;
Tomonori Hirose, Nagano, JP;
Takeshi Kojima, Saitama, JP;
Nissin Kogyo Co., Ltd., Ueda-shi, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A brake fluid pressure controller for a vehicle includes: wheel brakes; a master cylinder for supplying pressure to a brake fluid; at least one fluid pressure passage connecting the wheel brakes with the master cylinder; a pump provided on each fluid pressure passage for intensifying the brake fluid pressure; a revolution-controllable motor for driving the pump; a motor drive control part for controlling motor revolutions; a target fluid pressure calculation part for setting a target fluid pressure of the brake fluid; a brake fluid pressure acquisition part; and a fluid pressure deviation calculation part for calculating a difference between the target fluid pressure and the brake fluid pressure. When the difference is less than a predetermined value, the motor drive control part drives the motor at a smaller number of revolutions, as compared with a case where the difference is the predetermined value or more.