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:
Jan. 21, 2014
Filed:
Mar. 21, 2011
Yusuke Nozawa, Minami-Alps, JP;
Tohma Yamaguchi, Kawasaki, JP;
Kentaro Ueno, Minami-Alps, JP;
Yukihiko Yamada, Minami-Alps, JP;
Daisuke Kojima, Minami-Alps, JP;
Yusuke Nozawa, Minami-Alps, JP;
Tohma Yamaguchi, Kawasaki, JP;
Kentaro Ueno, Minami-Alps, JP;
Yukihiko Yamada, Minami-Alps, JP;
Daisuke Kojima, Minami-Alps, JP;
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Abstract
A brake control system displaces a primary piston by controlling an operation of the electric motor by a master pressure control unit according to the operation amount (Xop) of the brake pedal, thereby generating a hydraulic pressure in the master cylinder to supply it to wheel cylinders (Ba to Bd). The master pressure control unit sets a target relative displacement (ΔXT) between an input piston and the primary piston and a target hydraulic pressure (PT) in the master cylinder, and appropriately switch which is used to control a brake force. During regenerative cooperation, the master pressure control unit selects the control with use of the target hydraulic pressure, which enables easy execution of a hydraulic pressure control including a subtraction of the hydraulic pressure corresponding to a brake effect from the regenerative cooperation.