High-pressure pump

The present application relates to a high-pressure pump including a housing having a chamber formed therein and having a flow control valve and a discharge check valve disposed therein, a piston disposed in an assembly hole formed in the housing in a lifting operation, and compressing fuel of the chamber with high pressure, a cylinder disposed in the assembly hole, and a support member disposed in the assembly hole, a gap is formed between the inner circumferential surface of the cylinder and the piston, the cylinder guides the linear reciprocating movement of the piston, and the support member surrounds the outside of the cylinder, is disposed on the end difference surface of the housing, and elastically supports the space between the housing and the cylinder, thereby reducing friction while preventing fuel leakage between the piston and the cylinder. 本申请涉及高压泵，该高压泵包括壳体、活塞、缸和支承部件，其中，壳体的内部形成有室，并且室中设置有流量控制阀和排放止回阀，活塞以升降操作的方式设置于形成在壳体中的组装孔中，并且用高压对室的燃料进行压缩，缸的内周面与活塞形成间隙，并且缸对活塞的直线往返移动进行引导，并且支承部件围绕缸的外侧，安置在壳体的端差面上，并且对壳