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. 08, 2016
Filed:
Aug. 28, 2012
Hiroyuki Yamashita, Hiroshima, JP;
Kazuaki Narahara, Aki-gun, JP;
Tatsuya Tanaka, Higashi-Hiroshima, JP;
Yoshitomo Takahashi, Aki-gun, JP;
Yusuke Nakao, Hiroshima, JP;
Takashi Ikai, Higashi-Hiroshima, JP;
Hidefumi Fujimoto, Hiroshima, JP;
Masatoshi Seto, Hatsukaichi, JP;
Yoshio Tanita, Hiroshima, JP;
Kazuo Ichikawa, Hiroshima, JP;
Shingo Kai, Aki-gun, JP;
Susumu Masuyama, Hiroshima, JP;
Hirokazu Nakahashi, Hiroshima, JP;
Keiji Araki, Hatsukaichi, JP;
Hiroyuki Yamashita, Hiroshima, JP;
Kazuaki Narahara, Aki-gun, JP;
Tatsuya Tanaka, Higashi-Hiroshima, JP;
Yoshitomo Takahashi, Aki-gun, JP;
Yusuke Nakao, Hiroshima, JP;
Takashi Ikai, Higashi-Hiroshima, JP;
Hidefumi Fujimoto, Hiroshima, JP;
Masatoshi Seto, Hatsukaichi, JP;
Yoshio Tanita, Hiroshima, JP;
Kazuo Ichikawa, Hiroshima, JP;
Shingo Kai, Aki-gun, JP;
Susumu Masuyama, Hiroshima, JP;
Hirokazu Nakahashi, Hiroshima, JP;
Keiji Araki, Hatsukaichi, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A direct injection engine includes an ignition assistance section applying energy to fuel injected into a cylinder using an injector to assist auto-ignition combustion of the fuel when the engine is within an auto-ignition combustion operation range. A start time of fuel injection is set within a period from a terminal stage of a compression stroke to a compression top dead center. The energy is applied to the fuel injected into the cylinder in a period from start of the fuel injection to an initial stage of an expansion stroke such that a time of a specific crank angle when an increase rate of in-cylinder pressure, which is a ratio of a change in the in-cylinder pressure to a change in a crank angle in motoring the engine, reaches a negative maximum value overlaps a combustion period when a combustion mass percentage of the fuel ranges from 10% to 90%.