Patent ID: 6971172

Claim:
A method for adjusting piezoelectric valve components to establish and maintain a precise interface between a piezoelectric actuator and a movable valve plunger, the method comprising the steps of: providing a valve body and the valve plunger, the valve body having a first surface, and the valve plunger having first and second opposed ends; measuring a first difference between the first surface of the valve body and the first end of the valve plunger; substantially eliminating said first measured difference of the valve components, such that the first surface of the valve body and the first end of the valve plunger are in a first common plane; providing a piezoelectric actuator rod movably disposed in an actuator housing, the piezoelectric actuator rod having opposed first and second ends and the actuator housing having an end surface; establishing a second common plane between the end surface of the actuator housing and the second end of the actuator rod; and conducting a fine adjustment by rotating at least one nut disposed axially with the actuator rod to adjust the axial position of the actuator rod.