Protective cap for a fuel injection valve
US5193747A · kind A · utility
10Cited by
7References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Mar 19, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M61/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The protective cap for a fuel injection valve having a recess which extends radially outwards from a through flow passage, this recess being so small that it has a capillary effect on the fuel, so that when the internal combustion engine is stopped, the fuel constituents which boil at high temperatures are deposited on the radially outer edge of the recess, due the capillary action, and the injection orifice of the fuel injection valve remains free of deposits. The protective cap can be used for different types of fuel injection valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.