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. 11, 2014
Filed:
Feb. 11, 2010
Francois Foussard, Rouen, FR;
Alessandro Monti, La Garenne Colombes, FR;
Richard Pothin, Jouars-Pontchartrain, FR;
Nicolas Romani, Paris, FR;
Philippe Saint-loup, Jouars-Pontchartrain, FR;
Francois Foussard, Rouen, FR;
Alessandro Monti, La Garenne Colombes, FR;
Richard Pothin, Jouars-Pontchartrain, FR;
Nicolas Romani, Paris, FR;
Philippe Saint-Loup, Jouars-Pontchartrain, FR;
Renault S.A.S., Guyancourt, FR;
Abstract
A method for controlling a speed difference between speed of wheels of a front axle and speed of wheels of a rear axle of a four-wheel drive vehicle. The method: determines an initial speed difference set point based on the speed of the vehicle; determines one or more intermediate speed difference set points based on one or more operational parameters of the vehicle; modulates the initial speed difference set point based on the intermediate speed difference set points to obtain a final speed difference set point; measures the speed difference and compares the measured speed difference with the final speed difference set point; and controls the measured speed difference, so that the measured speed difference reaches the final speed difference set point.