Patent ID: 9103310
Filing Date: 2015-08-11
Classification: F02M

Abstract:
1. A fuel injector for direct injection of fuel into a combustion chamber of a mixture-compressing, spark-ignited internal combustion engine, comprising: a functional part which includes at least one nozzle body part of an actuator, and a valve closing body movable along a longitudinal axis which forms a sealing seat together with a valve seat surface; and a hydraulic extension part which is fixedly and tightly connected to the functional part via contact surfaces pressed against one another, wherein the contact surfaces are essentially perpendicular to the longitudinal axis; wherein at least one of the contact surface of the functional part, and the contact surface of the extension part being convexly curved; and wherein a weld seam is applied in connection areas in which the at least one convexly curved contact surface is provided.