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. 23, 2007
Filed:
Mar. 10, 2005
Kenji Kamimura, Saitama, JP;
Kouichi Asai, Saitama, JP;
Hitoshi Abe, Saitama, JP;
Ryo Saito, Saitama, JP;
Masashi Nakamura, Saitama, JP;
Kenji Kamimura, Saitama, JP;
Kouichi Asai, Saitama, JP;
Hitoshi Abe, Saitama, JP;
Ryo Saito, Saitama, JP;
Masashi Nakamura, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A choke valve is controlled finely suited to the running state of an engine. A throttle valveand a choke valveare provided in series on an intake pipe, and the opening degree of the choke valveis controlled by a stepping motorA choke valve opening degree upon start of engine (start opening degree) and a driving pulse rate of a stepping motorare determined depending on the engine temperature. When lower than the engine temperature TL, the pulse rate is set at first rate, or the lowest rate in a specified range. Depending on the engine temperature, the pulse rate is set higher gradually up to second rate TH. When releasing the choke gradually in warm-up operation, the pulse rate is lowered so as to obtain a choke opening degree of high precision by a high torque.