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. 05, 2002
Filed:
Jan. 30, 2001
Shunichi Takahashi, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An engine control device with a variable valve timing mechanism is provided for preventing an abrupt engine output fluctuation in the process of transmission operation or lock up clutch switching operation in an engine with the variable valve timing mechanism, and a torque shock is restrained accordingly. An ECU determines whether or not an automatic transmission is in the process of transmission operation or whether or not a lock up clutch is in the process of switching. If the automatic transmission is in the process of transmission operation or the lock up clutch is in the process of switching, a target valve timing is not updated, and the valve timing at the time is held. Thus, the operation of a VVT in the process of transmission operation of the automatic transmission or the switching operation of the lock up clutch is stopped, so that an engine output fluctuation caused by change in the valve timing can be prevented and the torque shock can be restrained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile