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:
Dec. 29, 2009
Filed:
Nov. 27, 2007
Applicant:
Yoshitomi Nakagawa, Shizuoka, JP;
Inventor:
Yoshitomi Nakagawa, Shizuoka, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A valve timing controller of an engine reduces degradation of drivability such as a feeling of jumping out of a vehicle and achieves a rapid increase in engine output according to a throttle operation amount. An ECU shifts a phase of a cam shaft toward a control target value A at a reference update speed Cwhen it is judged that a rider does not desire an output increase, and shifts the phase of the cam shaft toward the control target value A at a transient update speed Chigher than the reference update speed Cwhen it is judged that the rider desires an output increase.