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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 12435677 B1

PDFFull Text
Date of Patent:
Oct. 07, 2025

Filed:

Nov. 30, 2022

Two-stroke engine assembly having a catalytic converter and method for controlling same

Applicant:

Bombardier Recreational Products Inc., Valcourt, CA;

Inventors:

Bruno Schuehmacher, Richmond, CA;

Sebastien Thibault, Sherbrooke, CA;

Marc Giguere, Magog, CA;

Vincent Gamache, Granby, CA;

Luc Champigny, Racine, CA;

Claude Fortin, St-Denis-de-Brompton, CA;

Assignee:

BOMBARDIER RECREATIONAL PRODUCTS INC., Valcourt, CA;

Attorney:

BCF LLP

Primary Examiner:

Loren C Edwards

Int. Cl.
CPC ...
F02D 41/10 (2006.01); F02D 13/02 (2006.01); F02D 41/02 (2006.01); F02D 41/40 (2006.01); F02P 5/15 (2006.01);
U.S. Cl.
CPC ...
F02D 41/40 (2013.01); F02D 13/0242 (2013.01); F02D 41/024 (2013.01); F02P 5/1502 (2013.01); F02D 2200/0802 (2013.01); F02D 2400/04 (2013.01);
Abstract

A two-stroke engine assembly has a two-stroke internal combustion engine (ICE) and an exhaust system fluidly connected to the ICE. The exhaust system has a tuned pipe and at least one catalytic converter. A bypass valve is provided to selectively bypass the at least one catalytic converter. A method for controlling a two-stroke engine assembly controls the ICE to bring the temperature of exhaust gases within an operating temperature range of the catalytic converter. Another method for controlling a two-stroke engine assembly uses a lambda sensor to control the air-fuel ratio in cylinders of the ICE.

Find Patent Forward Citations

Schuehmacher, Bruno. (2025). Two-stroke engine assembly having a catalytic converter and method for controlling same (U.S. Patent No. 12435677). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12435677

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

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