Patent ID: 6808125
Filing Date: 2004-10-26
Classification: F02M

Abstract:
The fuel injector for injecting fuel in an internal combustion engine, said injector having an injector housing (1) which communicates with a central high-pressure reservoir and a nozzle needle (14) that cooperates with a valve piston (6) which is axially displaceable and guided in a valve piece (2), the improvement wherein the end of the nozzle needle (14) toward the valve piston (6) protrudes into a guide sleeve (16), and the end of the valve piston (6), or an end of a thrust rod (8) triggered by the valve piston (6), oriented toward the nozzle needle (14) is also received in the guide sleeve (16), further comprising a cylindrical recess (22) formed on said guide sleeve (16), on its face end toward the nozzle needle (14), and wherein, on the end of the nozzle needle (14) toward the valve piston (6), a thrust peg (15) is positioned, said thrust peg protruding into the guide sleeve (16) or into a central blind bore formed on the end of the valve piston (6).