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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 10125703 B1

PDFFull Text
Date of Patent:
Nov. 13, 2018

Filed:

Dec. 10, 2014

Internal combustion engine egr flow rate estimation apparatus and internal combustion engine control apparatus

Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Takuo Watanuki, Tokyo, JP;

Hideki Hagari, Tokyo, JP;

Tomokazu Makino, Tokyo, JP;

Assignee:

Mitsubishi Electric Corporation, Tokyo, JP;

Attorneys:

Sughrue Mion, PLLC

Richard C. Turner

Primary Examiner:

Hai Huynh

Assistant Examiner:

Gonzalo Laguarda

Int. Cl.
CPC ...
F01L 1/34 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/24 (2006.01); F02M 26/47 (2016.01); F02M 26/48 (2016.01); F02M 26/53 (2016.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0072 (2013.01); F02D 41/006 (2013.01); F02D 41/0077 (2013.01); F02D 41/145 (2013.01); F02D 41/2451 (2013.01); F02M 26/47 (2016.02); F02M 26/48 (2016.02); F02M 26/53 (2016.02); F02D 41/0062 (2013.01); F02D 41/1401 (2013.01); F02D 41/18 (2013.01); F02D 2200/0404 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0414 (2013.01); F02D 2200/703 (2013.01); Y02T 10/47 (2013.01);
Abstract

Based on an internal EGR ratio and desired external and internal EGR ratios, an EGR valve opening degree is feedback-controlled based on a desired EGR ratio, calculated in such a way as to perform correction so that a total EGR ratio becomes constant, and an EGR effective opening area obtained through learning of the relationship between an EGR valve opening degree and an effective opening area; thus, a correct characteristic of EGR valve opening degree vs. effective opening area can be maintained and hence it is made possible to absorb variations, changes with time, and even environmental conditions, while making an EGR valve and an intake/exhaust VVT collaborate with each other; therefore, an EGR flow rate can accurately be estimated.

Find Patent Forward Citations

Watanuki, Takuo. (2018). Internal combustion engine egr flow rate estimation apparatus and internal combustion engine control apparatus (U.S. Patent No. 10125703). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10125703

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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