Internal combustion engine with valve control

F - Mech Eng,Light,Heat,Weapons – 01 – L

Patent

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Details

F01L 9/02 (2006.01) F01L 1/047 (2006.01) F01L 1/053 (2006.01) F01L 1/14 (2006.01) F01L 1/46 (2006.01) F02B 75/24 (2006.01) F02F 1/22 (2006.01) F02B 75/02 (2006.01) F02B 75/18 (2006.01)

Patent

CA 2395908

An internal combustion engine comprising at least one rotating, oscillating or reciprocating piston (20, 21) in a cylinder (11, 12), each piston (20, 21) defining with the cylinder (11, 12) a combustion chamber (35), each combustion chamber (35) having at least one inlet valve (36) and one exhaust valve (37), and means (40) to periodically open the inlet and exhaust valves, characterised in that the valves are closed by a gas spring (80, 82) having a closing force proportional to the speed of the engine.

La présente invention concerne un moteur à combustion interne, comprenant au moins un piston rotatif, oscillant ou alternatif (20, 21) dans un cylindre (11, 12). Chaque piston (20, 21) définit une chambre de combustion (35) avec ledit cylindre (11, 12). Chaque chambre de combustion (35) présente au moins une soupape d'admission (36) et une soupape d'échappement (37), ainsi qu'un système (40) permettant d'ouvrir de manière périodique les soupapes d'admission et d'échappement. Cette invention est caractérisée en ce que les soupapes sont fermées par un ressort à gaz (80, 82) qui présente une force de fermeture proportionnelle à la vitesse du moteur.

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