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:
Mar. 23, 2004
Filed:
Aug. 07, 2000
Dale Scott Crombez, Livonia, MI (US);
Steven Otis Pate, Royal Oak, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Strategies other than immediate elimination of regenerative braking (FIG. ) are invoked when an incipient wheel lock-up is detected, the ABS becomes active, and/or incipient wheel slip is detected. The strategies include: reducing the regenerative braking torque as a function of the coefficient of friction of a surface on which the vehicle is traveling (FIG. ); and adjusting regenerative braking in relation to the rate at which wheel slip is changing (FIG. ). Some of the strategies may be applied on an individual wheel basis (FIG. ), and some of the strategies may be applied in conjunction with operating friction brakes of the vehicle to apply at least some of the reduction in regenerative braking torque as friction brake torque (FIG. ).