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:
Nov. 26, 2002
Filed:
Aug. 14, 2001
Donald D Anderson, Ann Arbor, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A process for continuously controlling the transfer of torque within a differential where a target delta (&Dgr; ) value is determined as a function of a first differential output shaft speed (&ohgr; ) and a second differential output shaft speed (&ohgr; ) and then normalized according to the vehicle speed when the vehicle is being driven under a no wheel slip condition. A normalized actual delta (&Dgr; ) is also determined as a function of the first output shaft speed (&ohgr; ) and the second output shaft speed (&ohgr; ), a comparison is made between &Dgr; and &Dgr; and torque is transferred between the first and second output shafts of the differential according to a logic control methodology such as proportional, integral, and/or derivative (PID) control methodologies if the comparison result of &Dgr; to &Dgr; is outside of a tolerance range established around &Dgr; .