High pressure seal means for a radial piston pump
US6514050B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jul 20, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/0887
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A radial piston pump for high-pressure fuel delivery in fuel injection systems of internal combustion engines, which includes a common rail injection system. The system includes a drive shaft that is supported in a pump housing and is embodied eccentrically for driving a number of pistons that are disposed radially in respective cylinder chambers into a reciprocating motion in the radial direction in the cylinder chambers upon rotation of the drive shaft. For each piston, a metallic housing part which constitutes the respective cylinder chamber is provided with a fuel intake opening and a fuel outlet opening which are controlled by intake and outlet valves. In order to uncouple the high-pressure sealing points from one another and to respectively define them in a statically exact fashion, the pump is embodied so that the housing part rests with a flat contact surface against a flat contact surface of the metallic housing base body. A projecting section of the housing part is oriented toward the drive shaft and extends through a radial opening of the housing base body in the direction toward the drive shaft. A fuel outlet opening discharges into the flat contact surface and is flush…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.