Patent ID: 6663024
Filing Date: 2003-12-16
Classification: F02M

Abstract:
An injector for injecting fuel into combustion chambers of an internal combustion engine, comprising:an injector housing (2) in which a control chamber (20) is embodied that can be acted upon by a control volume via an inlet throttle (21) and can be pressure-relieved via an actuator-actuatable control element, as a result of which a control part (3) is movable in the vertical direction in the injector housing (2), the control part (3) and a nozzle needle (22) being embodied integrally, further comprising inlet faces (26) for the delivery of fuel to a tip (32) of the nozzle needle (22) provided on the nozzle needle (22), still further comprising annularly extending guide faces (23,25) embodied on the nozzle needle (22), and still further comprising an annular hollow chamber (24) disposed between the guide faces (23, 25).