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:
May. 16, 2017
Filed:
Mar. 30, 2011
Kazuhiro Nagatsu, Hiroshima, JP;
Masatoshi Hidaka, Higasihiroshima, JP;
Takashi Kaminaga, Hatsukaichi, JP;
Masahisa Yamakawa, Hiroshima, JP;
Kazuhiro Nagatsu, Hiroshima, JP;
Masatoshi Hidaka, Higasihiroshima, JP;
Takashi Kaminaga, Hatsukaichi, JP;
Masahisa Yamakawa, Hiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
When a specific condition requiring a rise in exhaust gas temperature is satisfied, a required fuel amount to be injected from an injector () is injected in a split manner, such that the fuel injection is divided to: a main injection (X) to be initiated a given period before a compression top dead center; an auxiliary injection (X) to be initiated after initiation of auto-ignited combustion of an air-fuel mixture consisting of air and the fuel injected by the main injection (X) and before an assumed peak timing (Pk') of a heat release rate (RH) from the combustion based on the main injection (X); and a post injection (X) to be initiated after the assumed peak timing (Pk′) and before completion of combustion based on the main injection (X) and the auxiliary injection (X). This makes it possible to raise an exhaust gas temperature while sufficiently ensuring auto-ignitability and fuel economy performance.