Employing an Ionization Sensor for Combustion Diagnostics in a Lean Burn Natural Gas Engine 2001-01-0992
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.
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. Download Citation
Author(s):
Axel Franke, Patrik Einewall, Bengt Johansson, Raymond Reinmann
Affiliated:
Lund Institute of Technology, Saab Automobile AB
Pages: 12
Event:
SAE 2001 World Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Electronic Engine Controls 2001: Sensors & Actuators, Hardware, Tools and Validation-SP-1586, SAE 2001 Transactions Journal of Engines-V110-3
Related Topics:
Air / fuel ratio
Lean burn engines
Natural gas
Nitrogen oxides
Combustion and combustion processes
Emissions
Sensors and actuators
Pressure
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