Patent ID: 9567985
Date: 2017-02-14
CPC Classifications: F02M,F04B

Claim:
1. A high-pressure pump including a plunger capable of reciprocating, and a housing having a pressurizing chamber in which fuel is pressurized by the plunger, and a fuel chamber through which the fuel flows toward and from the pressurizing chamber, comprising: a spring that biases the plunger in such a direction as to increase the volume of the pressurizing chamber; a spring seat that is fixed to the housing and is in abutting contact with one end of the spring, wherein a first space through which the fuel flows is provided between a bottom of the spring seat and the housing, and the first space communicates with the fuel chamber via a fuel passage formed in the housing; and a heat insulating member that covers a face of the bottom of the spring seat, which face is exposed to the first space, wherein the heat insulating member is formed of a material that has a lower thermal conductivity than that of the spring seat, and is highly resistant to the fuel.