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:
Jan. 22, 2008
Filed:
Nov. 19, 2004
Riyuuhei Tamamoto, Wako, JP;
Tadayuki Yoneyama, Wako, JP;
Makoto Yamamura, Wako, JP;
Mitsuyoshi Kanai, Wako, JP;
Riyuuhei Tamamoto, Wako, JP;
Tadayuki Yoneyama, Wako, JP;
Makoto Yamamura, Wako, JP;
Mitsuyoshi Kanai, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
In an engine of a working machine having no governor mechanism, the engine revolution speed is controlled such that the revolution speed can stably be maintained irrespective of the variation in load without adjusting the throttle opening to exploit the full potential of the engine. Since an enginedoes not have the governor mechanism, an operator adjusts the throttle opening and controls the engine revolution speed. A map in which ignition timing (amount of angle of lead) is set by means of functions of the engine revolution speed is stored in an ignition timing map. The mapis set such that the engine revolution speed is equal to or higher than a value to be controlled (e.g. 7000 rpm), and the ignition timing is lagged as compared with a case in which the engine revolution speed is lower than the value to be controlled.