Radial piston pump for high pressure fuel delivery
US6139284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/04
- 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. A drive shaft having a number of cam-like projections is supported in a pump housing. A number of pistons disposed radially in cylinder chambers are set into a reciprocating motion in the cylinder chambers upon rotation of the drive shaft. A metallic housing part which constitutes the cylinder chamber is provided with a fuel intake opening and a fuel outlet opening, each of which is controlled by a check valve. The housing part rests with a flat contact surface against a flat contact surface of the metallic housing base body and a projecting section of the housing part, which is concentric to the cylinder chamber extends through a radial opening of the housing base body in the direction toward the drive shaft. The fuel inlet opening and the fuel outlet opening discharge into the flat contact surface and are flush with other inlet and outlet openings in the housing base body. The housing part is tightened against the housing base body by way of screws in such a way that the contact surfaces produce a high-pressure seal without t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.