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:
Oct. 15, 2002
Filed:
May. 15, 2001
Keisuke Fujiwara, Yokohama, JP;
Hirofumi Yano, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
Disclosed is an apparatus for controlling a position of an electromagnetically operated engine valve for an internal combustion engine. During the engine stop, a controller determines whether a cranking operation failure causes the engine stop (a step S ) or an engine stall causes the engine stop (a step S ). In a case where an ignition switch is turned to ON with the engine stop or the ignition switch is turned to OFF with the engine stop due to the failure in the cranking operation, the engine valve (either an intake valve or exhaust valve) is held at a valve open position or a valve closure position for a predetermined period of time based on an engine coolant temperature or the number of times the cranking operations have failed after the engine stops (steps S through S ). Thus, it is not necessary to initialize the engine valve at a time of the engine restart during the engine stall or during an idle stop. The engine can quickly be restarted with a power consumption saved.