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:
Jul. 26, 2011
Filed:
Dec. 22, 2008
Daisuke Eto, Mito, JP;
Mitsuhiko Watanabe, Odawara, JP;
Ryoichi Oura, Hitachinaka, JP;
Takuya Mayuzumi, Hitachinaka, JP;
Masahiro Toyohara, Hitachiota, JP;
Daisuke Eto, Mito, JP;
Mitsuhiko Watanabe, Odawara, JP;
Ryoichi Oura, Hitachinaka, JP;
Takuya Mayuzumi, Hitachinaka, JP;
Masahiro Toyohara, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A control devicefor an internal combustion engineincludes an injector drive circuitthat drives an injectorthat injects fuel and a temperature detection device that at least detects timing when a temperature condition that the temperature of the injector drive circuitexceeds predetermined temperature is satisfied. The control deviceincludes a heat-generation-suppression control meansthat performs control for suppressing the heat generation of the injector drive circuit. The heat-generation-suppression control meansselects, on the basis of a driving state of a vehicle, at least one parameter among an electric current applied to the injector, fuel pressure supplied to the injector, the number of revolutions of the internal combustion engine, and voltage from a battery to be boosted and performs control for limiting a value of the selected parameter on the basis of the timing.