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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.:

US 9932883 B1

PDFFull Text
Date of Patent:
Apr. 03, 2018

Filed:

Aug. 26, 2013

Spark-ignition direct-injection engine

Applicant:

Mazda Motor Corporation, Hiroshima, JP;

Inventors:

Kouhei Iwai, Hiroshima, JP;

Masahisa Yamakawa, Hiroshima, JP;

Kazuhiro Nagatsu, Hiroshima, JP;

Takashi Youso, Hiroshima, JP;

Keiji Araki, Hatsukaichi, JP;

Assignee:

MAZDA MOTOR CORPORATION, Hiroshima, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Hung Q Nguyen

Assistant Examiner:

Brian P Monahon

Int. Cl.
CPC ...
F02B 11/02 (2006.01); F02B 23/10 (2006.01); F02B 29/04 (2006.01); F02D 21/08 (2006.01); F02D 13/02 (2006.01); F02D 41/00 (2006.01); F02D 37/02 (2006.01); F02D 41/30 (2006.01); F02D 41/40 (2006.01); F02P 5/15 (2006.01); F02P 15/08 (2006.01); F02M 26/25 (2016.01); F02M 26/33 (2016.01);
U.S. Cl.
CPC ...
F02B 11/02 (2013.01); F02B 23/101 (2013.01); F02B 29/0418 (2013.01); F02D 13/0207 (2013.01); F02D 13/0261 (2013.01); F02D 21/08 (2013.01); F02D 37/02 (2013.01); F02D 41/0057 (2013.01); F02D 41/3017 (2013.01); F02D 41/3023 (2013.01); F02D 41/3035 (2013.01); F02D 41/401 (2013.01); F02M 26/25 (2016.02); F02M 26/33 (2016.02); F02P 5/1516 (2013.01); F02P 15/08 (2013.01); F02D 41/402 (2013.01); F02D 2041/3052 (2013.01); Y02T 10/125 (2013.01); Y02T 10/128 (2013.01); Y02T 10/146 (2013.01); Y02T 10/18 (2013.01); Y02T 10/44 (2013.01); Y02T 10/46 (2013.01); Y02T 10/47 (2013.01);
Abstract

A controller injects fuel into a cylinder at a high fuel pressure of 30 MPa or higher, at least in a period between a terminal stage of a compression stroke and an initial stage of an expansion stroke when an operating mode of an engine body is at least in a first specified sub-range of a low load range, and at least in a second specified sub-range of a high load range. The controller sets an EGR ratio in the first specified sub-range to be higher than an EGR ratio in the second specified sub-range, and advances start of fuel injection in the first specified sub-range to start of fuel injection in the second specified sub-range.

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