Plunger-activated unit injector for internal combustion engines
US6227174A · kind A · utility
3Cited by
16References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M49/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronically controlled unit injector for internal combustion engine. The unit injector is mounted on a cylinder and has a plunger that extends into the combustion chamber. Fuel flow through the unit injector is accomplished by the plunger, which moves upward into the unit injector in response to upward motion of the piston. This motion displaces fuel and pressurizes a fuel path within the unit injector, including a pressure void at the tip of the needle. The pressurized fuel lifts the needle, which permits fuel to exit through injection spray holes into the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.