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:
Aug. 27, 2024
Filed:
Dec. 17, 2021
Brp-rotax Gmbh & Co. KG, Gunskirchen, AT;
Ralf Rokita, Bad Wimsbach-Neydharting, AT;
Matthias Zarhuber, Thalheim bei Wels, AT;
Christian Raffelsberger, Scharnstein, AT;
Heinz Kusel, Pennewang, AT;
Nigel Foxhall, Semriach, AT;
Markus Doppelbauer, Gunskirchen, AT;
Thomas Zorn, Stadl-Paura, AT;
Christian Schwab, Gratwein-Strassengel, AT;
BRP-ROTAX GMBH & CO. KG, Gunskirchen, AT;
Abstract
An engine assembly for a vehicle includes an internal combustion engine and an exhaust system. The exhaust system includes a catalytic converter, a main muffler, a hydrocarbon trap, a pre-muffler disposed upstream from the main muffler and the hydrocarbon trap, and an exhaust path valve. The exhaust path valve is movable between first and second exhaust path positions. The exhaust path valve obstructs a second exhaust path in the first exhaust path position such that exhaust gas flows from an exhaust port of an engine cylinder to the catalytic converter to the main muffler and to the atmosphere. The exhaust path valve obstructs a first exhaust path in the second exhaust path position such that exhaust gas flows from the exhaust port of the engine cylinder to the catalytic converter to the hydrocarbon trap and to the atmosphere.