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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 12625107 B1

PDFFull Text
Date of Patent:
May. 12, 2026

Filed:

Mar. 17, 2023

Comass estimation system, exhaust gas composition ratio estimation method, and comass estimation method

Applicant:

Ngk Insulators, Ltd., Nagoya, JP;

Inventor:

Yuichiro Kondo, Obu, JP;

Assignee:

NGK INSULATORS, LTD., Nagoya, JP;

Attorney:

Mattingly & Malur, PC

Primary Examiner:

James Lin

Assistant Examiner:

Vivian A Tran

Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01N 27/406 (2006.01); G01N 27/407 (2006.01); G01N 27/409 (2006.01); G01N 27/41 (2006.01); G01N 27/417 (2006.01); G01N 27/419 (2006.01);
U.S. Cl.
CPC ...
G01N 27/4162 (2013.01); G01N 27/4065 (2013.01); G01N 27/4073 (2013.01); G01N 27/4074 (2013.01); G01N 27/409 (2013.01); G01N 27/41 (2013.01); G01N 27/417 (2013.01); G01N 27/419 (2013.01);
Abstract

A COmass estimation system includes: an acquisition element acquiring detected values in accordance with concentrations of oxygen, HO, and COcontained in an engine exhaust gas output from a gas sensor; a setting element setting an air-fuel ratio of a mixture; and a calculation element calculating the mass of COcontained in the exhaust gas, wherein the calculation element calculates the concentrations of oxygen, HO, and COcontained in the exhaust gas based on the sensor detected values, acquires concentrations of oxygen and HO in air and the air-fuel ratio, calculates a composition ratio of at least C atoms contained in fuel based on the concentrations in the exhaust gas, the concentrations in the air, and the air-fuel ratio, and estimates the mass of COcontained in the exhaust gas based on the composition ratio and the amount of injection of the fuel into the engine.

Find Patent Forward Citations

Kondo, Yuichiro. (2026). Comass estimation system, exhaust gas composition ratio estimation method, and comass estimation method (U.S. Patent No. 12625107). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12625107

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

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