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:
May. 04, 2010
Filed:
Dec. 05, 2007
Applicant:
Hiroshi Haraguchi, Kariya, JP;
Inventor:
Hiroshi Haraguchi, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 51/00 (2006.01); F02M 51/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A single fuel injection is performed in either one of cylinders during fuel cut control of a diesel engine to sense torque generated with the single fuel injection based upon an increase amount of rotation speed of a crankshaft at the time. Presence/absence of abnormality in an injection start timing of an injector is determined based on a difference in torque caused when the single fuel injection is performed at multiple command injection start timings. Thus, the presence/absence of the abnormality in the injection start timing can be sensed without using a nozzle lift sensor, whereby inhibiting an increase in the number of components.