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. 06, 2001
Filed:
Apr. 28, 1998
Applicant:
Inventor:
Toru Iwata, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/00 ; B60T 7/12 ;
U.S. Cl.
CPC ...
G06F 7/00 ; B60T 7/12 ;
Abstract
A slip of drive wheels of a vehicle driven via a continuously variable transmission is suppressed due to fuel cut of a multi-cylinder engine. The speed change response characteristics of the transmission are made to vary according to the engine rotation speed when fuel cut is performed. A speed change ratio command value is calculated from a target speed change ratio based on a first-order delay due to a predetermined time-constant. The response of the transmission is thus delayed for low engine rotation speed than for high rotation speed, and undesirable fluctuation of the speed change ratio when the drive wheels slip is prevented.