Control valve for common-rail fuel injector, has valve pin arranged within valve chamber and stroke-movably guided in sealing sleeve, and valve spring designed as corrugated spring, which is formed with three-point support

摘要

The valve has a valve pin (3) arranged within a valve chamber (1) and stroke-movably guided in a sealing sleeve (2). The valve pin is axially pre-tensioned with respect to a valve seat (5) by force of a valve spring (4). The valve seat is supported at the valve pin and at the sealing sleeve. The valve spring is designed as a corrugated spring, which is formed with a three-point support, where the valve spring is formed as a stamping/bending part. The sealing sleeve has a portion set axial to an extension of a guide bore.