| 摘要 |
A process for delaying the axial movement of the pump piston of a fuel injection pump of an internal combustion engine and fuel injection pump for completing the process are proposed. The fuel injection pump consists of a pump piston placed in a movable and rotating mode within a cylindrical bore of a cylindrical sleeve. The pump piston is designed as a combination piston with a damping piston of larger diameter, which will upon completion of the fuel injection period of the turn with the damping shoulder, border the damping chamber within damping bore of the cylindrical sleeve. This further allows only throttled amounts of fuel to flow through the throttling pintle into the suction chamber; the throttling pintle runs in a longitudinal direction and is located on the damping piston. This will produce supplementary hydraulic capacity extending from the damping shoulder, which has a supporting effect on the pump piston even at high turn speeds, and further allows for capacity increases of the fuel injection pump.
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