Switching valve for a fuel injection system, high-pressure fuel pump for a fuel injection system, as well as driving method for controlling a switching valve in a high-pressure fuel pump

摘要

The present invention relates to a switching valve (16) for a fuel injection system (10), which is a of a spring (28) prestressed closing element (22), by means of an adjusting means (54) the spring force (f_F) the spring (28) is variable reversibly. Furthermore, the invention relates to a high-pressure fuel pump (12), the such a switching valve (16) as well as a driving method with which this switching valve (16) can be controlled.