Fuel Equipment

Fuel Equipment When supplying fuel injection pumps with heavy, high viscosity oil, the fuel is first pumped at a pressure of approx. 6-8 bar into a collecting receptacle using a feed pump. Booster pumps then transport the fuel at a pressure of approx. 15-18 bar to the fuel injection pumps. This pressure increase is necessary in order to reduce dangerous emissions when the fuel is heated to approx. 130-140°C during transport through the fuel injection pumps. The inlet/outlet of fuel is controlled by the pump housing and the fuel injection pumps' plunger guide. The principle of injection pump control is based on chamfer control. The pump plunger moves vertically from the fuel pump cam on the camshaft into the barrel, thereby cutting off the inlet/outlet openings. A keyway with bevelled, sharp edge has been milled in the barrel. The plunger can be pivoted around its own axle depending on the load/speed. The bevelled edge then guides the fuel to the exhaust opening and, in doing so, regulates the volume of fuel to be injected into the combustion chamber.

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