Piston fuel pump for an internal combustion engine
US10393112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Nov 4, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3276
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is axially displaceable in the pump cylinder. The seal is arranged on a circumference of the pump piston. A radially outer surface of the seal which faces an inner surface of the pump cylinder is configured, in an axial end region, such that the radially outer surface lies against the pump cylinder as the pump piston is at rest relative to the pump cylinder, and such that a relative motion between the pump cylinder and the pump piston in the axial direction causes the seal to lift off from the pump piston in a radially inward direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.