Fuel injection spark plug
US4383198A · kind A · utility
Inventor
Key dates
| Filing date | Jun 8, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Jun 8, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P13/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection spark plug for use in combination with an external source of pressurized gaseous fuel such as hydrogen or natural gas supplied to an internal combustion engine is disclosed. The spark plug comprises a peripheral plenum surrounding or integral with the metallic shell in communication with the interior of the shell for the discharge of the fuel through a plurality of longitudinal equispaced slots formed in the spark plug insulating body and valve means provided in a conduit for supplying the fuel to the spark plug, said valve means located remote from the spark plug for permitting the flow of gaseous fuel towards the spark plug while preventing the flow of gaseous combustion products in a direction away from the spark plug. The conduit embodies cooling means for cooling the conduit and gaseous fuel and combustion products contained therein to avoid premature ignition and detonation of the gaseous fuel supplied through the spark plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.