Fuel systems for an internal combustion engine
US4173208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1977 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Nov 7, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M45/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system includes a first piston which can be subjected to fluid under pressure to cause displacement of a further piston, which causes delivery of fuel through an outlet. In addition a second piston is provided which is located in a cylinder communicating with the cylinder containing the first piston. The second piston is of smaller diameter and can also be subjected to fluid under pressure. When this occurs the second piston is moved and transfers fluid under pressure into the cylinder containing the first piston to achieve a limited delivery of fuel through the outlet. Valve means is provided to control the application of fluid pressure to the second piston and also the first piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.