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:
Nov. 27, 2012
Filed:
Sep. 18, 2009
Masahisa Yamakawa, Hiroshima, JP;
Shinichi Sugihara, Yokohama, JP;
Naohiro Yamaguchi, Hiroshima, JP;
Keiji Araki, Hatsukaichi, JP;
Masahisa Yamakawa, Hiroshima, JP;
Shinichi Sugihara, Yokohama, JP;
Naohiro Yamaguchi, Hiroshima, JP;
Keiji Araki, Hatsukaichi, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
There is provided, in one aspect of the present description, a method of controlling a spark ignited internal combustion engine having a fuel injector which injects fuel directly into its combustion chamber. The method comprises stopping the fuel injection if a desired torque for the engine is a predetermined torque or less and a speed of the engine is a predetermined speed or greater. The method comprises resuming the fuel injection by injecting a first amount of fuel directly into the combustion chamber during a negative pressure period and injecting a second amount of the fuel into the combustion chamber during an intake period. The method further includes resuming the fuel injection by injecting a third amount of the fuel directly into the combustion chamber during the negative pressure period and injecting a fourth amount of the fuel into the combustion chamber during the intake period.