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.:
Date of Patent:
Oct. 13, 2026
Filed:
Sep. 16, 2025
Bombardier Recreational Products Inc., Valcourt, CA;
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;
BRP-ROTAX GMBH & CO. KG, Gunskirchen, AT;
Abstract
A method for controlling a two-stroke engine assembly having a two-stroke internal combustion engine (ICE) having first and second cylinders; and an exhaust system fluidly. The exhaust system has a tuned pipe and a catalytic converter. The method having the steps of: sensing in the exhaust system, with a lambda sensor, a first combustion air-fuel equivalence ratio (λ) and a second combustion λ, the first and second combustion λ's being subsequent combustion λ's of different ones of the first and second cylinders; determining, by an engine control unit (ECU), a difference between the first and second combustion λ's; and in response to the difference between the first and second combustion λ's being greater than a predetermined λ, modifying an air-fuel ratio in at least one of the first and second cylinders to reduce the difference between the first and second combustion λ's below the predetermined λ.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile