Combustion sensor and combustion engine equipped with such a sensor
US5834629A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P2017/128
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a sensor 9 for detecting the degree of ionisation in a combustion chamber 2 in combustion engines with direct injection, and to a combustion engine equipped with such a sensor. The sensor is arranged around and preferably concentrically to the injector 6 in the latter's duct 5 in the cylinder head 1. The measuring electrode of the sensor 9 is substantially sleeve-shaped and is clamped firmly and centered by electrically insulating washers 11, 12 between a shoulder 7 in the duct 5 and a corresponding shoulder on the injector 6. The result is an inexpensive sensor which may easily be replaced without major modifications of the cylinder head or simultaneous replacement of the injector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.