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Air-Fuel Ratio Control Using a Simple Micro-Processor
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English
Abstract
A control system is described which uses a simple micro-processor in conjunction with a control algorithm which utilizes engine speed and mass air flow to result in air/fuel ratio control of ±.5 A/F for the federal driving schedule.
A comparison is made to the conventional speed/density approach and the described micro-processor complexity is reduced; the memory requirements are halved; and the execution time is faster resulting in the possibility of assigning additional control task.
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Authors
Citation
Russell, J. and Nedbal, R., "Air-Fuel Ratio Control Using a Simple Micro-Processor," SAE Technical Paper 770006, 1977, https://doi.org/10.4271/770006.Also In
References
- Rivard, J.G. “Closed-Loop Electronic Fuel Injection Control of the Internal Combustion Engine,” SAE Paper No. 730005 January 1973
- Eberhardt, J.E. Beck, J.A. “Process and Control for Producing Anti-Emission Carburators,” SAE Paper No. 690138 January 1969
- Hamburg, D.R. Hyland, J.E. “A Vaporized Gasoline Metering Syster for Internal Combustion Engines” SAE Paper No. 760288 February 1976
- Brandstetter, W.R. Carr, M.J. “Measurement of Air Distribution in a Multicylinder Engine by Means of a Man Flow Probe” SAE Paper No. 730494 May 1973
- Zeilinger, K. Hussman, A.W. “The Influence of Transient Conditions on the Operation of an SI Engine, Especially with Respect to Exhaust Emissions” SAE Paper No. 750053 February 1975