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. 30, 2000
Filed:
Sep. 29, 1998
Hidetoshi Kudou, Higashi-Hiroshima, JP;
Noriyuki Ota, Hiroshima, JP;
Masashi Marubara, Hiroshima, JP;
Hiroyuki Yamashita, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima-ken, JP;
Abstract
A direct injection engine including an injector disposed in an upper portion of a combustion chamber defined above a piston disposed in a cylinder of the engine with a fuel injecting direction of the injector being provided so that a fuel being injected toward a top portion of the piston, an ignition plug disposed at an upper portion of the combustion chamber, an engine operating condition detector for detecting an engine operating condition. The fuel is injected in a compression stroke from the injector when it is detected by the engine operating condition detector that the engine is in a low engine load and speed zone so as to stratify an injected air fuel mixture around the ignition plug to accomplish a stratified combustion. The engine further includes a fuel controller for controlling an fuel injection so as to inject the fuel plural times into the combustion chamber in a compression stroke when at least one of an engine load and an engine speed is relatively high in an engine operating zone for accomplishing the stratified combustion. A stable combustion is accomplished to improve the fuel consumption efficiency.