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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 10738664 B1

PDFFull Text
Date of Patent:
Aug. 11, 2020

Filed:

Dec. 27, 2016

Oil supply device for engine

Applicant:

Mazda Motor Corporation, Hiroshima, JP;

Inventors:

Masanori Hashimoto, Hiroshima, JP;

Hisashi Okazawa, Hiroshima, JP;

Assignee:

MAZDA MOTOR CORPORATION, Hiroshima, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Mark A Laurenzi

Assistant Examiner:

Loren C Edwards

Int. Cl.
CPC ...
F01L 1/344 (2006.01); F01L 13/00 (2006.01); F01L 1/24 (2006.01); F01M 11/10 (2006.01); F01L 9/02 (2006.01); F01M 1/02 (2006.01); F01M 1/16 (2006.01); F02F 7/00 (2006.01); F01L 1/18 (2006.01); F01L 1/053 (2006.01);
U.S. Cl.
CPC ...
F01L 1/3442 (2013.01); F01L 1/2405 (2013.01); F01L 9/02 (2013.01); F01L 13/0005 (2013.01); F01M 1/02 (2013.01); F01M 1/16 (2013.01); F01M 11/10 (2013.01); F01L 1/185 (2013.01); F01L 2001/0537 (2013.01); F01L 2001/3443 (2013.01); F01L 2001/34423 (2013.01); F01L 2001/34426 (2013.01); F01L 2105/00 (2013.01); F01L 2250/02 (2013.01); F01L 2250/04 (2013.01); F01L 2800/01 (2013.01); F01L 2810/02 (2013.01); F02F 7/0053 (2013.01); F16N 2250/36 (2013.01);
Abstract

A controller sets a target hydraulic pressure from a required hydraulic pressure of a hydraulically operated device according to an operating condition of an engine. The controller causes an oil control valve to perform feedback control of the discharge amount of an oil pump in such a manner that an actual hydraulic pressure detected by a hydraulic pressure sensor coincides with the target hydraulic pressure. The controller executes feedback control after executing fixed duty control of setting a duty ratio of the oil control valve to a fixed duty ratio for a predetermined period of time from start of the engine.

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