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.

Date of Patent:
Jan. 06, 2009

Filed:

Jan. 29, 2004
Applicants:

Koji Ishizuka, Kariya, JP;

Takayuki Fukushima, Okazaki, JP;

Takashi Kikutani, Ama-gun, JP;

Inventors:

Koji Ishizuka, Kariya, JP;

Takayuki Fukushima, Okazaki, JP;

Takashi Kikutani, Ama-gun, JP;

Assignee:

Denso Corporation, Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 37/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

During a short duration injection, a triangular geometry is drawn in terms of the injection rate with respect to time, while a trapezoidal geometry is drawn during a long duration injection. The ON timing of the drive pulse is determined to be at a valve opening pressure achieving time before the start point of formation in time of the geometry. An injection pulse duration is determined from 'the valve opening pressure achieving time+a needle rise time−a valve closing pressure achieving time,' and then the OFF timing of the drive pulse is determined.


Find Patent Forward Citations

Ishizuka, Koji. (2009). Fuel injection system (U.S. Patent No. 7472689). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7472689

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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