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. 06, 2018
Filed:
Mar. 16, 2016
Mazda Motor Corporation, Hiroshima, JP;
Yuji Harada, Higashihiroshima, JP;
Tatsuya Tanaka, Higashihiroshima, JP;
Hiroyuki Yamashita, Hiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
A fuel injection control unit (engine controller) performs a main injection () over a period ranging from a last stage of a compression stroke to an initial stage of an expansion stroke, and also performs a preceding injection (), injecting a smaller amount of a fuel than the main injection, over a period ranging from an intake stroke to a first half of the compression stroke, and also determines whether or not the fuel injected by the preceding injection causes a partial oxidation reaction during a second half of the compression stroke, and on determining that the fuel causes the partial oxidation reaction, performs a middle-stage injection (). The middle-stage injection is performed at such a timing that allows the fuel injected by the middle-stage injection to ignite spontaneously on or after the fuel injected by the main injection has spontaneously ignited and before the partial oxidation reaction occurs.