Fuel injector for internal combustion engine
US4369750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1979 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/44
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This disclosure relates to a fuel injector for an internal combustion engine. The injector comprises an injector body forming a plunger bore, and a plunger reciprocably mounted in the bore. The plunger reciprocates between a retracted position and a forward position, and a fuel receiving or metering chamber is formed at the forward end of the bore when the plunger is in the retracted position. A fuel supply passage is formed in the body and conducts fuel to the chamber when the plunger is in the retracted position. When the plunger is moved forwardly in an injection stroke, it ejects the fuel from the chamber through spray holes formed in the body. The injector further includes means for selectively opening or closing the supply passage when the injector plunger is in the retracted position. Such means includes a land formed on the plunger adjacent the supply passage, a groove formed in the land, and means for rotating the plunger between two angular positions. When the plunger is retracted and the plunger is in one angular position, the groove connects the supply passage to the chamber and in the other position the groove is displaced from the passage and the land closes the passa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.