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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 9638115 B1

PDFFull Text
Date of Patent:
May. 02, 2017

Filed:

Aug. 14, 2014

Method and device for controlling multi-cylinder engine

Applicant:

Mazda Motor Corporation, Aki-gun, Hiroshima, JP;

Inventors:

Toshiaki Nishimoto, Hiroshima, JP;

Hisashi Okazawa, Hiroshima, JP;

Masanori Hashimoto, Hiroshima, JP;

Junsou Sasaki, Hiroshima, JP;

Assignee:

Mazda Motor Corporation, Hiroshima, JP;

Attorney:

Alleman Hall McCoy Russell & Tuttle LLP

Primary Examiner:

Joseph Dallo

Int. Cl.
CPC ...
F02D 31/00 (2006.01); F01M 1/02 (2006.01); F02B 75/18 (2006.01); F02D 29/04 (2006.01); F02D 29/06 (2006.01); F02D 41/14 (2006.01); F02D 41/00 (2006.01); F02D 13/02 (2006.01); F02D 13/06 (2006.01); F02D 41/08 (2006.01); F01L 1/344 (2006.01); F01L 13/00 (2006.01); F01L 1/053 (2006.01);
U.S. Cl.
CPC ...
F02D 31/001 (2013.01); F01M 1/02 (2013.01); F02B 75/18 (2013.01); F02D 13/0219 (2013.01); F02D 13/06 (2013.01); F02D 29/04 (2013.01); F02D 29/06 (2013.01); F02D 41/0087 (2013.01); F02D 41/1401 (2013.01); F02D 41/1498 (2013.01); F01L 1/344 (2013.01); F01L 1/3442 (2013.01); F01L 13/0005 (2013.01); F01L 2001/0537 (2013.01); F01L 2013/001 (2013.01); F02D 13/0261 (2013.01); F02D 41/083 (2013.01); F02D 2041/0012 (2013.01); F02D 2250/24 (2013.01); Y02T 10/18 (2013.01);
Abstract

A control device of a multi-cylinder engine is provided. The device includes first and second auxiliary components. The first auxiliary component generates energy. The device includes an angular speed variation detecting device for detecting an angular speed variation of a crankshaft, and an auxiliary component control device for controlling drive loads of the first and second auxiliary components. When an engine load is low and the angular speed variation exceeds a predetermined threshold, the auxiliary component control device increases a total drive load of the auxiliary components. Here, if the drive load of the first auxiliary component is increasable, the drive load of the first auxiliary component is increased, and when this increase amount is insufficient, the drive load of the second auxiliary component is increased, whereas if the drive load of the first auxiliary component is not increasable, the drive load of the second auxiliary component is increased.

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