Fuel injection system
US6016786A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1999 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Jan 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0209
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system having a high pressure fuel injection pump whose high-pressure pumping is determined by an electrically controlled valve that controls a relief conduit, and the phase of the fuel injection is determined by the closure of this valve. To execute an injection that is subdivided into a preinjection and a main injection, and to simplify triggering of the electrically controlled valve, a cam that drives the pump piston is shaped such that the cam furnishes a range (P), in which the pump piston, to interrupt the injection between the preinjection and the main injection, remains in or moves back to its then-reached position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.