Barrier divided combustion chamber for fuel injected...

F - Mech Eng,Light,Heat,Weapons – 02 – B

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F02B 19/10 (2006.01) F02B 23/10 (2006.01) F02B 75/02 (2006.01) F02B 75/12 (2006.01)

Patent

CA 2318924

An internal combustion engine having a combustion chamber divided into two regions by an arcuate barrier (78) on the top of the piston and a complementary arcuate barrier formed in a cavity of the cylinder head. When the piston is at top dead center, the combustion chamber is effectively divided into two portions with approximately ten percent of the chamber being in the vicinity of a fuel injector (24) and a spark plug (26). By this structure, the engine minimizes the amount of fuel used at idle and at very low power levels, and yet engine performance at higher power levels is not affected.

L'invention concerne un moteur à combustion interne comportant une chambre de combustion divisée en deux régions par une barrière en forme d'arc (78) au sommet du piston et une barrière complémentaire en forme d'arc formée dans une cavité de la tête du cylindre. Lorsque le piston se trouve au point mort haut, la chambre de combustion est effectivement divisé en deux parties, à peu près 10 % de la chambre se trouvant à proximité d'un injecteur de carburant (24) et d'une bougie d'allumage (26). Grâce à cette structure, le moteur utilise une quantité minimum de carburant au ralenti et à de très faibles niveaux de puissance, sans que cela n'influe sur les performances à de plus hauts niveaux de puissance.

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