Fuel injection device for internal combustion engines

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

Patent

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Details

F02M 51/04 (2006.01) F02M 55/02 (2006.01) F02M 55/04 (2006.01) F02M 57/02 (2006.01) F02M 59/22 (2006.01) F02M 59/36 (2006.01) F02M 59/46 (2006.01) F02M 63/06 (2006.01)

Patent

CA 2101755

A fuel injection device (5) for internal combustion engines has an injection nozzle to which fuel is supplied by means of a pressure device comprising a fuel-accelerating pump (1) and a fuel-retarding device (6) which, when activated, convert the kinetic energy of the accelerated fuel abruptly to a pressure shock wave which causes the fuel to be sprayed through the injection nozzle (5). According to the invention, an intermittently operated fuel-accelerating pump (1) is used. This pump (1) and the preferably electrically operated retarding device (6) are preferably controlled by a common control device (8). As a result, the injection device can be operated with very little, optimally utilized energy and can inject fuel in a precisely controllable manner very quickly and when decoupled from the motorized operations.

L'invention concerne un dispositif d'injection de carburant (5) pour moteurs à combustion interne, comprenant un injecteur alimenté en carburant par un dispositif à pression qui comprend une pompe d'accélération (1) du carburant et un dispositif ralentisseur du débit de carburant (6), appareil par l'actionnement duquel l'énergie cinétique du carburant accéléré est transformée brusquement en une onde de choc de pression pulvérisant le carburant par l'intermédiaire de l'injecteur (5). Conformément à l'invention, il est prévu une pompe d'accélération de carburant (1) à fonctionnement intermittent, cette pompe (1), ainsi que le dispositif ralentisseur (6) actionné de préférence électriquement, étant, de préférence, commandés par un appareil de commande (8) commun. Le dispositif d'injection peut ainsi fonctionner avec une faible utilisation optimale d'énergie, et est capable d'injecter du carburant, selon une commande précise, très rapidement et indépendamment des processus de fonctionnement du moteur.

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