Long-life fiber-optic pressure sensors for monitoring and control of combustion engines

• Autorzy: Poorman T. , Arnold J. , Coleman T. , Wlodarczyk M. T.
• Języki publikacji: EN

Abstrakty

EN

This paper describes the design and performance of Optrand long-life high-temperature fiber-optic pressure sensors that have been specifically developed for monitoring and control of internal combustion engines. In a robust, durable, and low-cost design Optrand pressure sensors utilize the principle of light intensity changes, transmitted by two optical fibers, upon reflection from a specially shaped metal diaphragm deflecting under the effect of pressure. The non-contact detection principle combined with the diaphragm design optimized for infinite fatigue life translates into a sensor with extraordinary lifetime. The sensor's miniature signal opto-electronic conditioner is embedded inside a "smart" electrical connector. Due to its small size and EMI resistance the sensor can be integrated into multi-functional pressure sensing fuel injectors, spark plugs, or glow plugs. The results obtained with almost one thousand of sensors are reported here gathered in gasoline, diesel, and natural gas engines. In the longest application to date, Optrand combustion pressure sensors have demonstrated over 20,000 hours or l billion pressure-cycle service lifetime in large-bore stationary gas engines of pipeline compressor stations. In fuel injection applications the sensor offers typical +7-0.5% accuracy while combustion pressure sensor accuracy is typically in the l- 2% range.

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 1999
• Tom: Vol. 6, No. 1-2
• Strony: 141--149
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Poorman T.

autor

Arnold J.

autor

Coleman T.

autor

Wlodarczyk M. T.

• Optrand, Inc. 46155 Five Mile Rd., Plymouth, MI 48170, USA