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:
Apr. 12, 2005
Filed:
Dec. 27, 2002
Takahisa Koseki, Yokohama, JP;
Tetsuya Iwasaki, Tokyo, JP;
Takashi Nakazawa, Kawasaki, JP;
Masahiko Yuya, Yokohama, JP;
Takahisa Koseki, Yokohama, JP;
Tetsuya Iwasaki, Tokyo, JP;
Takashi Nakazawa, Kawasaki, JP;
Masahiko Yuya, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
Engine cranking control is ended when it is detected that the battery voltage for driving the starter is lowered to at least as low as a starter drive judgment value and thereafter, returns to at least a starter stop judgment value during the engine cranking control that is started on condition that an engine is rotating. A start for driving a starter and a stop of driving the starter can be distinguished based on battery voltage where the battery voltage recovers due to a rapid reduction of consuming current and a rapid increase of a generating current when a driver recognizes an engine combustion completion and stops a starter driving. As a result, on increase of an engine friction, the cranking control is accurately ended, preventing deterioration of a fuel economy and excess exhaust gas emission.