Glow plug with pressure sensing canister
US8217309B2 · kind B2 · utility
4Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | May 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49083
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A glow plug assembly includes an integrated, internal pressure sensor. In order to reduce loading on the center electrode, improve sensor responsiveness, and provide better thermal performance, the pressure sensor assembly is housed in a canister which forms a containment capsule and rigidly connects inside the glow plug shell near its seat area. The pressure sensor makes direct contact with the base end of the heater probe so that movements of the heater probe caused by fluctuations in gas pressure lead directly to changing force on the sensor stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.