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A Portable Fast Response Air-Fuel Ratio Meter Using an Extended Range Oxygen Sensor
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English
Abstract
The method for measuring air-fuel ratio is generally based on analysis of the exhaust gas components and its calculations. A new instrument has been developed which uses this method, but it attaches an oxygen sensor for exhaust gas analysis to the exhaust pipe and calculates the air-fuel ratio directly from the sensor output using a microprocessor.
The response time of this instrument is 100 milliseconds and because it does not require an exhaust gas sampling system its weight is only 2.5 kg.
This paper describes the operation theory, construction and characteristics of this instrument, as well as the results of air-fuel ratio of measurements on engines and vehicles using this instrument in a transient state.
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Authors
Citation
Murase, I., Moriyama, A., and Nakai, M., "A Portable Fast Response Air-Fuel Ratio Meter Using an Extended Range Oxygen Sensor," SAE Technical Paper 880559, 1988, https://doi.org/10.4271/880559.Also In
References
- Haslett R.A. Eidson T.M. “Equivalence Ratio Meter” SAE 770219
- Bulter James W. Haack Larry P. Colvin Alex D. McKelvy Frederic E. “Fast-Response Zirconia Sensor-Based Instrument for Measurement of the Air/Fuel/Ratio of Combustion Exhaust” SAE 840061
- Fagley, Walter S. Jr. Hunez Richard R. “Exhaust Gas Analysis as a Tool for Measuring Fuel-Air Ratios” SAE 670483
- Soejima Shigeo Mase Shunzo “Multi-Layered Zirconia Oxygen Sensor for Lean Burn Engine” SAE 850378
- Boynton W.P. Brattain W. H. “Interdiffusion of Gases and Vapors” INTERNATIONAL CRITICAL TABLE Vol. V McGRAW HILL