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:
Sep. 07, 1999
Filed:
Feb. 20, 1998
Applicant:
Inventor:
Hirotada Muraki, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; G05D / ; F02D / ;
U.S. Cl.
CPC ...
701114 ; 701 54 ; 701 63 ;
Abstract
An engine control system reduces thermal deterioration of a torque converter. Maximum torque down control is provided, using simple processing and a minimum number of required signals, to reduce thermal deterioration. A maximum fuel injection amount QFULL is reduced when vehicle speed is less than a predetermined value that is close to zero, thereby lowering maximum engine torque. Also, the presence or absence of an abnormal vehicle speed sensor is diagnosed and maximum engine torque is also lowered during occurrence of an abnormality.