US 10,378,524 B2 · High-pressure fuel pump

Abstract

A high-pressure fuel pump capable of reducing the number of components and decreasing the manufacturing cost by processing of a pump body is provided. The high-pressure fuel pump includes a metal damper, a pump body in which a damper housing that houses the metal damper is formed, a damper cover attached to the pump body, covering the damper housing, and holding the metal damper between the pump body and the damper cover, and a holding member fixed to the damper cover and holding the metal damper from a side opposite to the damper cover. The holding member is provided with an elastic portion that urges the pump body so that the metal damper is urged toward the damper cover.

Claims13

Dependent claims

A high-pressure fuel pump, comprising:

a metal damper;
a damper housing that is formed in a pump body and houses the metal damper;
a damper cover attached to the pump body that covers the damper housing and the metal damper between the pump body and damper cover;
a holding member that is fixed to the damper cover and holds a lower side of the metal damper, wherein the lower side is a side of the damper that is opposite to the damper cover;
a fuel path formed through the holding member;
a communication path formed along an outer periphery of the holding member, wherein the communication path allows the lower side of the damper to communicate with an upper side of the damper;
and
an elastic portion formed in the fuel path of the holding member, wherein the elastic portion urges the pump body so that the metal damper is urged toward the damper cover.

5 more elements

Dependencies are inferred from the claim text.

High-pressure fuel pump

Life of this patent

High-pressure fuel pump

Life of this patent

Abstract

Claims13