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.:

US 7143744 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 05, 2006

Filed:

Jul. 05, 2005
Applicant:

Koji Araki, Toyota, JP;

Inventor:

Koji Araki, Toyota, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 9/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A throttle opening degree TA is converted to a reference opening area SB based on a map MAPsbta representing the relationship between the throttle opening degree and the opening area in a deposit-free state. An actual opening area SA after the deposit amount is changed is obtained by subtracting an opening area change amount dDS corresponding to a change in deposit amount from the reference opening area SB. Since the opening area change amount dDS is uninfluenced by changes of the engine operational zones, the actual opening area SA is accurately determined. By converting the actual opening area SA to a control throttle opening area TAa based on the map MAPsbta, the control throttle opening degree TAa that reflects the actual opening area with improved accuracy can be detected.


Find Patent Forward Citations

Araki, Koji. (2006). Detection device and method for throttle opening degree, and compensation device and method for target throttle opening degree (U.S. Patent No. 7143744). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7143744

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