Investigation into Air-Fuel Ratio Measurement of a High Performance Two-Stroke Engine by an Optical Method 2002-01-0741
Close control of air-fuel ratio is vital to attaining optimum performance from internal combustion engines. To ensure that air-fuel ratio is maintained at the correct value, an accurate measurement of the real-time air-fuel ratio is required.
This paper investigates the use of an optical method to measure air-fuel ratio of a high performance two-stroke engine.
The technique measures the light emission from the combustion process at two wavelengths, corresponding to the CH and C2 radicals. A relationship between characteristics of this light emission and air-fuel ratio has been developed over a range of engine operating conditions. Other factors that affect this relationship have also been quantified.
Citation: Longdill, S., Raine, R., Blanchard, G., and Wright, W., "Investigation into Air-Fuel Ratio Measurement of a High Performance Two-Stroke Engine by an Optical Method," SAE Technical Paper 2002-01-0741, 2002, https://doi.org/10.4271/2002-01-0741. Download Citation
S. Longdill, R. Raine, G. Blanchard, W. Wright
The University of Auckland, Buckley Systems Ltd.
SAE 2002 World Congress & Exhibition
SI Combustions and Flow Diagnostics-SP-1699, SAE 2002 Transactions Journal of Engines-V111-3