The application of thick-film peizoresistive technology for combustion pressure sensing
Fawcett, Nigel (1999) The application of thick-film peizoresistive technology for combustion pressure sensing. University of Southampton, School of Engineering Sciences, Doctoral Thesis .
Download
Full text not available from this repository.
Description/Abstract
This thesis identifies the benefits offered by combustion pressure measurement in petrol engines to real-time engine control. Benefits include reduced exhaust emissions and better engine performance. The various techniques used for combustion pressure measurement are reviewed, and thick-film piezoresistive technology is identified as a technology capable of producing a low cost sensor.
Two possible locations for. the thick-film pressure sensor are experimentally investigated, both on the spark plug.
The piezoresistive material chosen is Heraeus 8241, a widely used material based on jt ruthenium dioxide particles in a glass matrix. Properties relevant to the construction of a combustion pressure sensor are evaluated; the elastic modulus is measured for the first time between 173 and 573K, and piezoresistivity is measured for the first time between 77 and 533K. The response of thick-film piezoresistors to hydrostatic pressure is investigated.
A spark plug sensor is constructed, calibrated and engine tested. The detection of the angle of peak pressure, magnitude of peak pressure and knock is demonstrated.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| Item ID: | 47564 |
| Date Deposited: | 07 Aug 2007 |
| Last Modified: | 02 Mar 2012 13:30 |
| Contributors: | Fawcett, Nigel (Author) |
| Date: | 1999 |
| Status: | Unpublished |
| URI: | http://eprints.soton.ac.uk/id/eprint/47564 |
Actions (login required)
 |
View Item |
