High-pressure fuel pump
A high-pressure fuel pump, high-pressure technology, which is applied to fuel injection pumps, fuel injection devices, pumps, etc., can solve problems such as laborious installation, achieve good sealing, reduce high-pressure leakage, and reduce manufacturing costs.
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[0015] figure 1 A schematic diagram showing a high-pressure fuel pump according to the present invention, which is provided with three pump pistons 3a, 3b and 3c. These pump pistons 3a-3c are respectively guided in the piston guides 4a, 4b, and 4c and are arranged at equal distances from each other on the same circumferential line (12) around the unshown pump camshaft, through which the pump cam The polygonal configuration of the shaft drives these pump pistons together. A pressure chamber 5a, 5b and 5c is provided above each pump piston 3a-3c. These pressure chambers 5a-5c are in turn connected to low-pressure input pipes 6a, 6b, and 6c, respectively, and to high-pressure connection pipes 7a, 7b, and 7c, which are connected to the input holes 8a, 8b, and 8c in the piston guides 4a-4c. form.
[0016] in figure 2 A detailed sectional view of a pressure chamber 5a and a pump piston 3a can be seen. The pressure chamber 5a is supplied with fuel through an input hole 8a and a low-...
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