Patent ID: 6401696
Filing Date: 2002-06-11
Classification: F02M

Abstract:
A fuel injection device which operates according to the solid-state energy storage principle comprising:a reciprocating plunger pump having a front and rear orientation and including a pump case in which a delivery plunger element is arranged which, during an acceleration phase which is virtually without resistance, stores kinetic energy which is suddenly transmitted to fuel located in a pressure chamber, so that a pressure surge is generated for spraying fuel through an injection nozzle device; means interrupting the acceleration phase which is virtually without resistance being a valve which comprises a valve body and a valve seat formed on the delivery plunger element for closing the pressure chamber in order to generate the pressure urge, as a result of which the kinetic energy of the delivery plunger element is transmitted to the fuel enclosed in the pressure chamber; and said valve seat and the valve body being arranged at a front end of the delivery plunger element so that the pressure chamber is designed so as to be spatially separated from the delivery plunger element, wherein said pressure chamber is provided with a fuel feed opening leading directly outside the pump casing for feeding fuel, the fuel feed opening being connected to a fuel feed line so that fresh pressurized fuel is fed to the pressure chamber.