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:
Nov. 09, 2004
Filed:
Nov. 19, 2002
Applicant:
Inventor:
Hiroshi Kondo, Toyoake, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 4/122 ;
U.S. Cl.
CPC ...
F02D 4/122 ;
Abstract
An electronic throttle control system has a main computer and a sub-computer. The main computer calculates a target throttle angle, and the sub-computer controls a throttle actuator. In the computers, a throttle angle monitor value is set based on an accelerator angle to determine a normal range, and monitor an electronic throttle control operation by determining whether an actual throttle angle is within the normal range. The data characteristic of the monitor value is defined in a logic with which the throttle angle is controlled in the throttle closing direction upon occurrence of a memory retention abnormality.