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:
Dec. 09, 2008
Filed:
Feb. 24, 2005
Yoshimasa Watanabe, Sunto-gun, JP;
Ichiro Sakata, Susono, JP;
Yoshifumi Wakisaka, Aichi-gun, JP;
Yoshihiro Hotta, Nagoya, JP;
Kiyomi Kawamura, Nisshin, JP;
Kiyomi Nakakita, Nishikamo-gun, JP;
Yoshimasa Watanabe, Sunto-gun, JP;
Ichiro Sakata, Susono, JP;
Yoshifumi Wakisaka, Aichi-gun, JP;
Yoshihiro Hotta, Nagoya, JP;
Kiyomi Kawamura, Nisshin, JP;
Kiyomi Nakakita, Nishikamo-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A pressure boosting unit () is provided in each fuel injection valve of an engine (). A pressure of fuel to be supplied to the fuel injection valve from a common rail () is boosted as required. An ECU () causes low pressure injection to be performed with the pressure boosting unitbeing in a non-operated state, and high pressure injection to be performed with the pressure boosting unit () being in an operated state, and the pressure of the fuel being maintained at a boosted pressure. Based on the result, the ECU () corrects a fuel injection period of the fuel injection valve. Also, after the correction of the fuel injection period is completed, fuel injection is performed before the pressure of the fuel reaches the boosted pressure after the pressure boosting unit starts to be operated. Based on the result, operation starting timing of the pressure boosting unit is adjusted.