Seam test on a fuel injection pump, and fuel injection pump required for applying same
An inspection method and technology of fuel injection pumps, applied to fuel injection pumps, liquid tightness measurement using liquid/vacuum degree, fuel injection devices, etc., can solve problems such as hindering inspections, short circuits, etc., and achieve the effect of increasing installation costs
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[0012] The fuel injection pump shown in FIG. 1 is a so-called pump nozzle 1 which is inserted into a receptacle 2 in a motor housing 3 . This type of oil pump nozzle has a pump piston 5, which is driven to and fro by a driving device of the engine itself. The pump piston surrounds a pump working chamber 7 in a cylinder bore 6 , from which fuel is supplied via a pressure line 9 to the fuel injection valve 10 when the pump piston moves against the force of a restoring spring 8 . The pump piston, the pump working chamber and the fuel injection valve are located in a common housing 11 consisting of housing parts screwed together. The fuel pump nozzle is characterized by the shortest possible connection between the pump working chamber 7 and the injection point of the fuel injector 10, where the connecting fuel line 9 is guided in a dimensionally stable housing instead of a Normally elastically deformable fuel hose, this hose affects fuel injection due to its displacement.
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