Direct-injection type compression-ignition internal...

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

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F02B 23/06 (2006.01) F02B 3/06 (2006.01) F02F 1/24 (2006.01)

Patent

CA 2088786

A direct-injection type compression-ignition internal combustion engine, wherein a collision surface (13) is formed in a cavity (7) formed at the top surface of a piston and fuel is injected in the form of a continuous fluid flow from a fuel injector (15) to the collision surface (13). The timing of the start of the fuel injection from the fuel injector (15) is determined to near the compression top dead center and the initial combustion is performed in the cavity (7). The fuel colliding with the collision surface (13) is pulled into the squish area (23) due to the reverse squish flow caused when the piston (2) descends after the compression top dead center and the majority of the combustion following the initial combustion is performed in the squish area (23) after the compression top dead center.

Moteur à combustion interne Diesel du type à injection directe dans lequel une surface de collision (13) est formée dans une cavité (7) à la surface supérieure d'un piston et où le carburant est injecté sous la forme d'un écoulement continu de liquide à partir d'un injecteur de carburant (15) vers la surface de collision (13). Le moment auquel commence l'injection de carburant par l'injecteur de carburant (15) est fixé près du point mort haut du cycle de compression, et la compression initiale est effectuée dans la cavité (7). Le carburant frappant la surface de collision (13) est attiré dans la zone de pression de fin de compression (23) en raison de l'écoulement inversé de la pression de fin de compression qu'entraîne la descente du piston (2) après le point mort haut du cycle de compression, et la majeure partie de la combustion suivant la combustion initiale se fait dans la zone de pression de fin de compression (23) après le point mort haut du cycle de compression.

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