Patent ID: 6425376
Filing Date: 2002-07-30
Classification: F02M

Abstract:
A fuel injector for a fuel-injection system of an internal combustion engine, the fuel injector comprising:a valve housing; a valve seat; a seal; an actuator, the actuator being one of a piezoelectric actuator and a magnetostrictive actuator, the actuator being arranged in an actuator space of the valve housing, the actuator space being sealed from a fuel by the seal; and a valve-closure member actuatable by the actuator and interacting with the valve seat to form a sealed seat; wherein the seal includes a sealing member and a sealing element, the sealing element being joined to the sealing member by a first circumferential welded seam, being elastically deformable and band-shaped, and being joined to the valve housing by a second circumferential welded seam.