Glow plug ceramic heater
US6018142A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Mar 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/141
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A silicon-based ceramic heater suitable for use in a glow plug of a diesel engine, the heater comprising a refractory metal heating element, preferably a wire which consists essentially of tungsten (W), molybdenum (Mo), or an alloy of tungsten and molybdenum; a titanium nitride (TiN) coating on the heating element, which coating serves as a barrier to the diffusion of silicon and defines a coated heating element; and a sintered body, preferably consisting essentially of silicon nitride (Si.sub.3 N.sub.4), silicon carbide (SiC), or a composite of silicon nitride and silicon carbide, within which the coated heating element is embedded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.