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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 6804952 B1

PDFFull Text
Expired
Date of Patent:
Oct. 19, 2004

Filed:

Feb. 21, 2003

Catalyst warm up control for diesel engine

Applicant:
Inventors:

Shizuo Sasaki, Numazu, JP;

Kouji Yoshizaki, Numazu, JP;

Nobuki Kobayashi, Toyota, JP;

Yoshiki Hashimoto, Suntou-gun, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Attorney:

Oliff & Berridge, PLC

Primary Examiner:

Thomas Denion

Assistant Examiner:

Diem Tran

Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract

Diesel engine is operated in a first warm-up mode in an early warm-up period after startup so as to accelerate activation of the catalyst, and then in a second warm-up mode in a late warm-up period after the early warm-up period so as to maintain activity of the catalyst. The first warm-up mode provides more energy to the catalyst with exhaust gases than the normal operation mode of the diesel engine. The second warm-up mode provides exhaust gases of higher temperature to the catalyst than the normal operation mode.

Find Patent Forward Citations

Sasaki, Shizuo. (2004). Catalyst warm up control for diesel engine (U.S. Patent No. 6804952). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6804952

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

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