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, 2003
Filed:
Feb. 13, 2001
Masato Yoshino, Itami, JP;
Sumitomo (SEI) Brake Systems, Inc., Mie-Pref, JP;
Abstract
A coordinated regenerative brake system controls total brake torque to brake a vehicle in accordance with brake pedal operation and achieve deceleration intended by the driver's operation of the brakes when the accelerator is not depressed. In a vehicle speed range below specific speed V , engine brake equivalent torque Ta is set to decrease gradually to zero in accordance with vehicle speed V. When brake operation starts at a vehicle speed exceeding V , the desired total brake torque Tq working on the vehicle is the sum of brake torque Tb corresponding to brake operation, and engine brake equivalent torque Ta, until vehicle speed reaches specific speed V . When vehicle speed is V or less, brake torque is controlled using as desired total brake torque Tq the sum of brake torque Tb corresponding to brake operation, and first engine brake equivalent torque Ta , if brake operation amount Sb is greater than or equal to a first brake operation amount Sb