Glow plug for internal combustion engines
US4459948A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1981 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Oct 20, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P19/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A glow plug for internal combustion engines, the plug including a plug barrel, an electric heater for igniting the fuel, and a device for the metered injection of liquid fuel into the glow plug. The plug includes a centrally positioned heating pin in a pasageway through which the metered fuel passes, the heating pin including a thickened portion to define a valve. A chamber is provided in the glow plug barrel and is heated by the electric heater for evaporating the injected liquid fuel. The barrel includes a tube around the heating pin tip to provide a mixing chamber that contains concentrically arranged bores that extend into the mixing chamber and are connected to an air supply line in the vicinity of the opposite end of the plug barrel to permit air and evaporated fuel to mix to give improved combustion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.