F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 9/04 (2006.01) F01L 1/38 (2006.01) F01L 7/12 (2006.01) F01L 9/02 (2006.01) F01L 15/02 (2006.01) F02B 1/04 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2223770
A valve assembly is located adjacent a cylinder structure of a two-stroke engine and includes a valve adapted to vary the height of the exhaust port of this engine. The source of pressure to vary this height is a pressurized medium or a vacuum. The valve includes a restricting member adapted to vary exhaust port height from a full-flow height to a restrictive height. The valve is capable of actuating and controlling the restricting member according to the engine speed N generated by the engine to obtain its optimum efficiency.
Bombardier Inc.
Smart & Biggar
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