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Employing an Ionization Sensor for Combustion Diagnostics in a Lean Burn Natural Gas Engine
Technical Paper
2001-01-0992
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
An ionization sensor has been used to study the combustion process in a six-cylinder lean burn, truck-sized engine fueled with natural gas and optimized for low emissions of nitric oxides. The final goal of the investigations is to study the prospects of using the ionization sensor for finding the optimal operating position with respect to low NOx emission and stable engine operation.
The results indicate that unstable combustion can be detected by analyzing the coefficient of variation (CoV) of the detector current amplitude. Close relationships between this measure and the CoV of the indicated mean effective pressure have been found during an air-fuel ratio scan with fixed ignition advance.
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Citation
Franke, A., Einewall, P., Johansson, B., and Reinmann, R., "Employing an Ionization Sensor for Combustion Diagnostics in a Lean Burn Natural Gas Engine," SAE Technical Paper 2001-01-0992, 2001, https://doi.org/10.4271/2001-01-0992.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
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