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In-Cylinder Pressure Measurements With Optical Fiber And Piezoelectric Pressure Transducers., Kevin J. Roth
In-Cylinder Pressure Measurements With Optical Fiber And Piezoelectric Pressure Transducers., Kevin J. Roth
Electronic Theses and Dissertations
Highly accurate cylinder pressure data can be acquired using a wall-mounted and water-cooled quartz piezoelectric transducer. However, this type of transducer does not satisfy the cost and packaging constraints for use in a production engine application. A potential solution to these issues is the much smaller and less expensive optical fiber based pressure transducer. This research compares Kistler piezoelectric transducers to Optrand optical fiber transducers. The influence of the transducer type and mounting arrangement on the quality of cylinder pressure data was examined. The transducers were evaluated on a DaimlerChrysler 4.7L V-8 Compressed Natural Gas fuelled test engine. The analysis …