Back to results
US 2023/0407828 A1Published application
Fuel pump
AssigneeHitachi Astemo, Ltd.
InventorsSatoshi USUI, Minoru HASHIDA
Life of this patent
Estimating the term…
Abstract
A fuel pump includes a damper, a suction valve chamber, a pressurization chamber, a relief valve chamber, a relief valve mechanism, and a shock wave absorber. The shock wave absorber is provided in the relief valve chamber, and is disposed to face the relief valve holder on the downstream side in the direction in which the relief valve holder moves when the relief valve mechanism is released.
Claims7
A fuel pump comprising:
- a damper;
- a suction valve chamber that communicates with the damper through a suction passage;
- a pressurization chamber that is formed downstream of the suction valve chamber;
- a relief valve chamber that is formed downstream of the pressurization chamber;
- a relief valve mechanism that is disposed in the relief valve chamber and has a relief valve holder;
- and
- a shock wave absorber that is provided in the relief valve chamber and is disposed to face the relief valve holder on a downstream side in a direction in which the relief valve holder moves when the relief valve mechanism is released.
4 more elements
Dependencies are inferred from the claim text.