Fuel injection device for internal combustion engines

A fuel injection device operating on a the solid-state energy storage principle, wherein the fuel injection device is configured as a reciprocating plunger pump having a delivery plunger element, said delivery plunger element being movable from a starting position in the direction of a first pressure chamber, said delivery plunger element storing kinetic energy during a near zero-resistance acceleration phase, the kinetic energy being abruptly transmitted by an impulse movement to fuel present in the first pressure chamber so that a pressure impulse is generated for forcing a first quantity of fuel through an injector means into a combustion chamber, the fuel injection device further comprising a second pressure chamber arranged on a side of said delivery plunger element opposite the first pressure chamber such that kinetic energy absorbed on a return movement of said delivery plunger element to its starting position is transmitted by an impulse movement to fuel present in the second pressure chamber so that a second quantity of fuel is forced into the combustion chamber.