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High-Accuracy Low-Cost Cylinder Pressure Sensor for Advanced Engine Controls
Technical Paper
2001-01-0991
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
A high-accuracy and low-cost cylinder pressure sensor reported in this paper compensates for all major temperature errors encountered in internal combustion engines. The auto-referencing technique maintains sensor calibration compensating for temperature effects on the sensor signal conditioner over the range of -40 to +135°C. In an inexpensive design sensor head materials and dimensions are optimized to compensate for the mid-term thermal errors associated with engine load changes over a temperature range of -40 and 300°C, resulting in the thermal coefficient of sensitivity as low as 0.005%/°C. A miniature, specially shaped diaphragm results in less than 0.5% error associated with rapidly changing combustion gas temperatures. Under non-combustion conditions the sensor offers +/-0.25 - 0.5% accuracy while under combustion conditions the accuracy is typically in the 1- 2% range.
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Citation
Ulrich, O., Wlodarczyk, R., and Wlodarczyk, M., "High-Accuracy Low-Cost Cylinder Pressure Sensor for Advanced Engine Controls," SAE Technical Paper 2001-01-0991, 2001, https://doi.org/10.4271/2001-01-0991.Also In
Electronic Engine Controls 2001: Sensors & Actuators, Hardware, Tools and Validation
Number: SP-1586; Published: 2001-03-05
Number: SP-1586; Published: 2001-03-05
References
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