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. 26, 2010
Filed:
Nov. 18, 2008
Yoshifumi Murakami, Obu, JP;
Yoshifumi Murakami, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
A fuel cut failsafe function monitoring section of a microcomputer sets a fuel cut failsafe function diagnosis period in a period, in which an operation of an engine is stopped (e.g., a period before engine start), and sends a fuel cut failsafe execution command signal to a fuel cut failsafe execution section of an abnormality monitoring device during the fuel cut failsafe function diagnosis period. Thus, the fuel cut failsafe execution section is caused to output a fuel cut failsafe signal to an injector driver to stop an operation of the injector driver. The fuel cut failsafe function monitoring section monitors an output level of a disablement port of the injector driver at the time, thereby performing abnormality diagnosis of a fuel cut failsafe function.