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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 9719441 B1

PDFFull Text
Date of Patent:
Aug. 01, 2017

Filed:

Oct. 23, 2014

Control device for compression ignition-type engine

Applicant:

Mazda Motor Corporation, Hiroshima, JP;

Inventors:

Kazuhiro Nagatsu, Hiroshima, JP;

Atsushi Inoue, Hiroshima, JP;

Kota Matsumoto, Hiroshima, JP;

Takashi Kaminaga, Hiroshima, JP;

Toru Miyamoto, Higashihiroshima, JP;

Takashi Youso, Hiroshima, JP;

Assignee:

MAZDA MOTOR CORPORATION, Hiroshima, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Jacob Amick

Int. Cl.
CPC ...
F02D 41/04 (2006.01); F02D 21/08 (2006.01); F02D 41/00 (2006.01); F02D 41/30 (2006.01); F02D 41/40 (2006.01); F02M 25/12 (2006.01); F02D 41/02 (2006.01); F02D 21/06 (2006.01); F01N 3/08 (2006.01); F02B 3/08 (2006.01); F02D 21/10 (2006.01); F02D 13/02 (2006.01); F02B 17/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/04 (2013.01); F01N 3/0842 (2013.01); F02B 3/08 (2013.01); F02D 21/06 (2013.01); F02D 21/08 (2013.01); F02D 21/10 (2013.01); F02D 41/006 (2013.01); F02D 41/0025 (2013.01); F02D 41/0057 (2013.01); F02D 41/02 (2013.01); F02D 41/3023 (2013.01); F02D 41/3035 (2013.01); F02D 41/401 (2013.01); F02M 25/12 (2013.01); F01N 2570/14 (2013.01); F02B 17/005 (2013.01); F02D 13/02 (2013.01); F02D 41/0065 (2013.01); F02D 2041/001 (2013.01); F02D 2041/3052 (2013.01); Y02T 10/128 (2013.01); Y02T 10/44 (2013.01); Y02T 10/47 (2013.01);
Abstract

A control device for a compression ignition engine includes a controller configured to operate an engine body by compression ignition combustion when the engine body operates in a predetermined compression ignition range. When the engine body operates in a predetermined high load range of the compression ignition range, the controller maximizes a filling amount of the cylinder using a gas state adjustment system, and lowers an EGR ratio so that the air-fuel mixture in the cylinder is lean with an excess air ratio λ higher than 1 in a lower speed range, and maximizes the filling amount of the cylinder, and increases the EGR ratio so that the air-fuel mixture in the cylinder has the excess air ratio λ of 1 or lower in a higher speed range than the lower speed range.

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