Diesel generator set is composed of diesel engine, generator, base, fan, water tank, control system and other parts. The diesel engine is also assembled with many important parts. The diesel generator set manufacturer Teda Danso oil pump nozzle force will explain the relevant knowledge about the fuel injection pump here. The details are as follows:

1、 Function of fuel injection pump of diesel generator set

1. Increase oil pressure (constant pressure): Increase the injection pressure to 10MPa~20MPa.

2. Control the fuel injection time (timing): Inject and stop fuel injection according to the specified time.

3. Control the fuel injection quantity (quantitative): According to the working condition of the diesel engine, change the amount of fuel injection to adjust the speed and power of the diesel engine.

2、 Requirements of diesel generator set on fuel injection pump

1. Supply oil according to the working order of the diesel engine, and ensure that the fuel supply to each cylinder is uniform.

2. The oil supply advance angle of each cylinder should be the same.

3. The fuel supply duration of each cylinder should be equal.

4. The establishment of oil pressure and the cessation of oil supply must be rapid to prevent the occurrence of dripping and leakage.

3、 Classification of fuel injection pumps for diesel generator sets

1. Plunger type fuel injection pump.

2. Pump injector type, which combines the fuel injection pump and fuel injector together.

3. Rotary distribution fuel injection pump.

4、 Structure of injection pump of typical diesel generator set

The commonly used diesel engine fuel injection pumps in China are: A-type pump, B-type pump, P-type pump, VE type pump, etc. The first three types belong to plunger pumps; VE pump is a distributed rotor pump.

（1） Structural characteristics of B-type fuel injection pump

1. Adopting spiral groove plunger and flat hole plunger sleeve

2. The oil quantity adjustment mechanism is a toothed rod type, with an adjustable maximum oil quantity rigid limit device (some use spring limit devices) installed at the front end of the toothed rod

2. Adjusting the screw type roller body transmission components

3. The camshaft is a tangent type cam supported on the housing using tapered roller bearings.

4. The pump body is integral and adopts independent lubrication method.

（2） Structural characteristics of P-type fuel injection pump

1. The suspension type cylinder assembly plunger, plunger sleeve, oil outlet valve and other parts are fixed together with a flanged cylinder steel sleeve, forming an assembly component. Directly fixed to the shell with pressed metal studs, forming a suspended structure. Can rotate the sleeve at a certain angle.

2. Adjustment of the oil supply volume of each sub pump There is an arc groove on the flange plate of the steel sleeve of the sub pump. Loosen the compression screw, rotate the steel sleeve, and the plunger sleeve of the sub pump will rotate at a certain angle, changing the position of the inlet and return oil holes relative to the inclined groove on the plunger, and the oil return time will change.

3. Adjustment of the starting point of the fuel supply for the slave pump: Increase or decrease the gasket under the flange plate sleeve, causing a slight upward and downward movement of the oil inlet and return holes of the plunger sleeve, thereby changing the position relative to the upper end of the plunger, and adjusting the starting point of the fuel supply for the slave pump.

4. There are 1~2 steel balls welded on the end face of the transmission sleeve of the ball pin angle plate oil volume regulating mechanism. The cross section of the oil supply rod is in the shape of an angle steel, and a small square notch is opened on its horizontal Cathetus. When working, the square groove meshes with the steel ball on the transmission sleeve. Non adjustable roller body transmission components;

5. The fully enclosed box pump body adopts an integral sealed pump body without opening the side window, with only the upper and lower covers. The pump body has high stiffness and can withstand high fuel injection pressure without deformation, resulting in a longer lifespan of the plunger components;

6. Adopting pressure lubrication method;

7. There is a specially designed pre stroke inspection hole with a screw plug above the roller body, which can be used to check whether the pre stroke of each slave pump is consistent (measured with a specialized instrument).

The above is sorted out and released by the diesel generator set manufacturer Teda Danso oil pump nozzle force. If you have any questions about the diesel generator set, you can contact the diesel generator set manufacturer Teda Danso oil pump nozzle force or relevant professional technicians of the diesel generator set.