Control valve assembly for pumps and injectors

Details Control valve assembly for pumps and injectors Control valve assembly for pumps and injectors

1999-03-10

2000-12-12

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123496, F02M 3704

Patent

active

061584193

ABSTRACT:
Pumps and injectors utilize a control valve having a valve body with a valve stem having a step adjacent to the seating surface. The step extends a limited distance away from the seating surface to provide limited pressure relief when the valve body is at an intermediate position that is between the opened and closed positions. Step cross-section and axial length may be configured based on desired hydraulic behavior. In a preferred embodiment, the control valve step is configured for injection rate shaping.

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