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The Application of an Air-to-Fuel Ratio Sensor to the Investigation of a Two-Stroke Engine
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Abstract
A rapid response air-to-fuel ratio sensor manufactured by Nissan has been evaluated for use as a diagnostic tool in engine research. The sensor was calibrated for use with methanol and the time response of the sensor was investigated. Using the sensor's capacity as an extended range oxygen sensor, it was used to monitor the exhaust of a methanol fueled, two-stroke research engine fitted with a prototype air-assisted direct-injection fuel injector. Measurements made at various locations in the exhaust line indicated high levels of short circuited intake air and revealed fluctuations in the measurements due to the sensor's sensitivity to temperature and pressure.
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Watry, D., Sawyer, R., Green, R., and Cousyn, B., "The Application of an Air-to-Fuel Ratio Sensor to the Investigation of a Two-Stroke Engine," SAE Technical Paper 910720, 1991, https://doi.org/10.4271/910720.Also In
References
- Murase I. Moriyama A. Nakai M. “A Portable Fast Response Air-Fuel Ratio Meter Using an Extended Range Oxygen Sensor” SAE Paper No. 880559
- Lu J.-H. Iiyama A. Sawyer R. F. “Application of a Fast Response Air-Fuel Ratio Meter to a Square Piston Engine Simulator” 1988 Fall Meeting of the Western States Section of The Combustion Institute October 1988
- Green R. Cousyn B. “An Optical Research Engine for the Study of Two-Stroke Cycle In-Cylinder Phenomena” International Symposium on Diagnostics and Modeling of Internal Combustion Engines 347 352 1990
- Emerson J. Felton P. G. Bracco F. V. “Structure of Sprays from Fuel Injectors - Part III: The Ford Air-Assisted Fuel Injector” SAE Paper No. 900478