Circuit for driving the excitation coil of an...

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

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F02M 51/04 (2006.01) F01M 1/02 (2006.01) F02D 41/20 (2006.01) F02M 37/00 (2006.01) F02M 37/08 (2006.01) F02M 39/00 (2006.01) F02M 55/00 (2006.01) F02M 55/02 (2006.01) F02M 57/02 (2006.01) F02M 59/38 (2006.01) F02M 61/04 (2006.01) F02M 61/08 (2006.01) F02M 63/06 (2006.01) F02M 69/24 (2006.01) F02M 69/34 (2006.01) F02M 69/46 (2006.01) F02M 63/00 (2006.01)

Patent

CA 2127800

The invention pertains to a fuel injection device operating according to the solid-state energy storage principle, whereby a rotor element carried in a pump housing of an electromagnetically driven reciprocating pump is accelerated almost without resistance, whereby the rotor element stores kinetic energy and impacts on a piston element, so that a pressure impulse is generated in the fuelcontained in a closed pressure chamber before the piston element due to the fact that the stored kinetic energy of the rotor element is transferred via the piston element to the fuel in the pressure chamber and whereby the pressure impulse is used for the injection of fuel through a nozzle and whereby the rotorelement is carried form-locking on the piston element and the two elements are mutually spring-mounted.

L'invention concerne un dispositif d'injection de carburant qui fonctionne selon le principe de l'accumulateur d'énergie à solide. Un induit (10) guidé dans le corps de pompe (8) d'une pompe à piston alternatif (1) entraînée par un électro-aimant (9) est accéléré pratiquement sans résistance. L'induit (10) accumule de l'énergie cinétique et heurte un piston (14) de manière à produire un coup de bélier dans un carburant se trouvant dans une chambre de compression fermée devant le piston (14), tandis que l'énergie cinétique accumulée de l'induit (10) est transmise par l'intermédiaire du piston (14) au carburant se trouvant dans la chambre de compression. Le coup de bélier est utilisé pour injecter le carburant à travers le dispositif d'injection à gicleur (3). L'induit (10) est guidé par liaison de forme sur le piston (14) et ces deux éléments sont maintenus l'un contre l'autre au moyen de ressorts.

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