Patent ID: 8033269
Filing Date: 2011-10-11
Classification: F02M

Abstract:
1. A fuel injection device comprising: a nozzle body in which a first fuel chamber, a second fuel chamber, a third fuel chamber, and a nozzle orifice extending from the second fuel chamber to the outside of the fuel injection device are formed; a needle valve held in a needle valve holding part in the nozzle body; a needle valve open part provided closer to the front end side than the needle valve holding part in the nozzle body, having the second fuel chamber; a needle valve close part provided closer to the rear end side than the needle valve holding part in the nozzle body, having the third fuel chamber; an injection control valve held in the nozzle body, being capable of advancing and retreating in the first fuel chamber, in which a discharge prevention part of preventing fuel in the first fuel chamber from discharging to the outside of the fuel injection device through the third fuel passage, the third fuel chamber, and the fourth fuel passage when the injection control valve shifts from the first position to the second position.