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. 03, 1998
Filed:
Apr. 08, 1997
Takeshi Ishizu, Zama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In a drive force reduction controller for reducing engine output when drive wheels slip, a first shift timing is applied to an automatic transmission during ordinary running, and a second shift timing is applied when engine output is reduced. The second shift timing is set so as to provide a shift-up at a vehicle speed higher than the first shift timing when the throttle opening is less than a predetermined opening such that the engine rotation speed after shift-up is equal to or greater than a predetermined rotation speed. It is also set to provide the shift-up at a vehicle speed lower than the first shift timing when the throttle opening is greater than a second predetermined opening greater than the first predetermined opening. In this way, stable drive force reduction control is performed regardless of the throttle opening, shift-up in the high vehicle speed region is prevented, and shocks due to shift-up of the transmission in the high vehicle speed region are mitigated.