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:
Apr. 29, 2008
Filed:
Nov. 06, 2006
Yoshihiro Majima, Inuyama, JP;
Yoshihiro Majima, Inuyama, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Abstract
A common rail fuel injection system has a fuel pump, a common rail, and an injector. The injector injects high-pressure fuel supplied from the common rail into an engine and leaks part of the high-pressure fuel. An electronic control unit (ECU) restricts a heat amount of the leak fuel of the injector based on a remaining amount of the fuel in a fuel tank. At that time, a target value of the fuel pressure in the common rail is changed to a lower value and the restriction of the fuel pressure is performed with the changed target value. Thus, decrease in generation torque of the engine against intension of a driver can be inhibited while protecting components such as the fuel injection valve.