Control valve for fuel injection pump of IC engine - has servo-slide lifting closure piece at min. pressure in pressure space

摘要

The valve has a servo slide (13) that only lifts the valves closure piece (7) from its stop (23) when a min. pressure exists in the pressure space (14) and releases a cross channel (10) in the closure piece to form an extra control cross-section between the control outlet (19) and the pressure space. The control outlet runs coaxially w.r.t. the closure piece and w.r.t. the outlet of the axial channel (8) and is enclosed concentrically by the valve seat (16,17). The main seat (16) is enclosed by a second seat (17). ADVANTAGE - Simple. Fast.