TWO-STROKE ENGINE ASSEMBLY HAVING A CATALYTIC CONVERTER AND METHOD FOR CONTROLLING SAME
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Nov 30, 2022
filing date -
Nov 30, 2022
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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.
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