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. 24, 1991
Filed:
Oct. 25, 1990
Shinichi Kurosu, Ageo, JP;
Mitsugi Chonan, Koga, JP;
Fusao Tachibana, Shiraoka, JP;
Kazuo Suzuki, Ageo, JP;
Yoshiki Yuzuriha, Isezaki, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Japan Electronic Control Systems Co., Ltd., Gunma, JP;
Polaris Industries L.P., Minneapolis, MN (US);
Abstract
A crankcase temperature sensor is provided for detecting temperature of a crankcase. A low speed basic injection pulse width is provided based on the detected crankcase temperature for low engine speed. An ordinary fuel injection pulse width is provided in accordance with engine operating conditions for ordinary engine operating condition. A comparator is provided for comparing the low speed injection pulse width and the ordinary fuel injection pulse width with each other. A larger injection pulse width is determined for injecting fuel.