Exhaust valve assembly for a two-stroke internal combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11891930
SERIAL NO

17552856

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Importance

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Abstract

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A method of operating an exhaust valve of a two-stroke internal combustion engine is disclosed. The engine has a cylinder and a piston movably disposed within the cylinder. The cylinder defines at least one exhaust port for discharging exhaust fluid from the cylinder. The exhaust valve is configured to cyclically obstruct the exhaust port. The method includes: rotating the exhaust valve in a first direction for clearing the exhaust port before the piston uncovers the exhaust port during a downstroke of the piston, the first direction being opposite a direction of rotation of a crankshaft of the engine; and rotating the exhaust valve in the first direction for at least partially closing the exhaust port before the piston fully covers the exhaust port during an upstroke of the piston, said rotating of the exhaust valve relative to the rotation of the crankshaft at least partially counterbalancing the crankshaft.

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Patent Owner(s)

Patent OwnerAddress
BRP-ROTAX GMBH & CO KGWELSER STRASSE 32 GUNSKIRCHEN A-4623

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abis, Andrea Graz, AT 2 4
Doppelbauer, Markus Gunskirchen, AT 8 23
Foxhall, Nigel Semriach, AT 7 13
Kirchberger, Roland Graz, AT 12 62
Kusel, Heinz Pennewang, AT 16 112
Winkler, Franz Graz, AT 7 58
Zarhuber, Matthias Thalheim bei Wels, AT 4 4

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