Accumulator-type fuel injection system
US5732679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Apr 17, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/3881
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system includes a fuel injector having a body, a needle valve movably provided in the body and a fuel accumulator having two chambers for storing a fuel at high and low pressures. An injection chamber is formed in the injector lower body and a control chamber is formed in the injector upper body. An injection passage connects the high pressure chamber with the injection chamber and a control passage connects the low pressure chamber with the control chamber. The needle valve is lifted upon leaking of the fuel to the accumulator from the control chamber and the fuel is injected from the injection chamber upon lifting of the needle valve. The fuel is recycled to the fuel tank from the control chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.