Patent ID: 7083126

Claim:
A fuel injection arrangement for connection to a source of fuel under pressure, the fuel injection arrangement comprising: a fuel injection nozzle defining a fuel chamber for receiving fuel under pressure, the fuel injection nozzle comprising a needle valve element disposed in the fuel injection nozzle for controlling injection of fuel from the fuel chamber and a force mechanism for urging the needle valve element in a closing direction thereof, wherein the force mechanism comprises a piston unit provided with a flow connection through a drain duct equipped with a throttle element, and a fuel-control arrangement having an inlet for connection to the source of fuel under pressure and having a first operating state in which the fuel control arrangement isolates said inlet from both the fuel chamber and the piston unit, a second operating state in which the fuel control arrangement provides a connection between said inlet and the fuel chamber, and an intermediate state, between the first and second operating states, in which the fuel control arrangement provides a connection between said inlet and both the fuel chamber and the piston unit, and wherein the fuel control arrangement comprises a mechanical force unit for selectively transferring the fuel control arrangement between the first and second operating states by way of the intermediate state.