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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 10697383 B1

PDFFull Text
Date of Patent:
Jun. 30, 2020

Filed:

Sep. 04, 2015

Engine control device

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Shinji Nakagawa, Tokyo, JP;

Toshio Hori, Hitachinaka, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Joseph J Dallo

Assistant Examiner:

Scott A Reinbold

Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02P 9/00 (2006.01); F02D 41/14 (2006.01); F02P 5/15 (2006.01); F02D 37/02 (2006.01); F02D 43/00 (2006.01); F02D 19/02 (2006.01); F02D 19/10 (2006.01); F02D 41/28 (2006.01); F02P 3/045 (2006.01); F02P 5/152 (2006.01); F02D 21/08 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0052 (2013.01); F02D 19/024 (2013.01); F02D 19/10 (2013.01); F02D 37/02 (2013.01); F02D 41/0072 (2013.01); F02D 41/1456 (2013.01); F02D 41/1498 (2013.01); F02D 43/00 (2013.01); F02P 5/15 (2013.01); F02P 5/1516 (2013.01); F02P 9/002 (2013.01); F02D 41/006 (2013.01); F02D 2021/083 (2013.01); F02D 2041/288 (2013.01); F02P 3/045 (2013.01); F02P 5/1522 (2013.01); Y02T 10/46 (2013.01); Y02T 10/47 (2013.01);
Abstract

The present invention suppresses the worsening of stability due to a variation in EGR amounts between cylinders in a spark ignition engine. An engine control device for controlling a spark ignition engine equipped with an EGR means for recirculating exhaust gas in a combustion chamber and an air-fuel-ratio detection means for detecting the air-fuel ratio in each cylinder, the engine control device being characterized by being equipped with a means for changing the parameters for ignition control of a rich cylinder, when the air-fuel ratio of cylinders varies and there are richer cylinders and leaner cylinders relative to a prescribed air-fuel ratio during the execution of exhaust gas recirculation by the EGR means.

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