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. 29, 2009
Filed:
Sep. 28, 2005
Naoya Ishikawa, Fujisawa, JP;
Naoki Shimazaki, Fujisawa, JP;
Naoya Ishikawa, Fujisawa, JP;
Naoki Shimazaki, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
A diesel engine having: a reentrant type cavitydepressed in the top of a piston; fuel injection meansthat injects fuel towards the cavity; exhaust gas recirculation meansthat recirculates a part of the exhaust gas into a combustion chamber; and a control devicethat controls the fuel injection timing by the fuel injection meansand the EGR ratio or EGR quantity by the exhaust gas recirculation means, wherein in a predetermined operating region, the control deviceimplements premixed combustion by controlling the fuel injection timing by the fuel injection meansso that fuel injection is completed before the compression top dead center of the pistonand so that all the injected fuel enters the cavity, as well as controlling the EGR ratio or the EGR quantity by the exhaust gas recirculation meansso that the fuel injected by the fuel injection meansis ignited near the compression top dead center of the pistonafter injection of fuel is completed. In this way, favorable premixed combustion can be implemented, and favorable combustion can be ensured even when the combustion is switched to diffuse combustion.