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A Digital Memory Fuel Controller for Gasoline Engines
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English
Abstract
A digital memory fuel control unit has been developed for otto cycle engines which enables low pollution exhaust emissions to be achieved, coupled with good drivability and mechanical performance. The unit has been tested on a Triumph 2.5 PI vehicle, and the practical results achieved fall just short of the requirements of the 1975 federal and California legislation.
The electronic controller receives signals relating to the engine's instantaneous operating conditions and, by reference to its digital memory, computes the optimum fuel required. The capacity of the controller's memory is effectively increased by an interpolation technique. The controller operates as an on-line process control computer, of cigar box dimensions, which is able to exist in the arduous automotive environment.
Authors
Citation
Williams, M., "A Digital Memory Fuel Controller for Gasoline Engines," SAE Technical Paper 720282, 1972, https://doi.org/10.4271/720282.Also In
References
- Soltau J. P. Senior K. B. “Petrol Injection Control for Low Exhaust Emissions.” IME Symposium on Air Pollution Control in Transport Engines, Civic Hall Solihull Nov. 9 1971
- Federal Register 33 108 June 4 1968
- State of California Air Resources Board Nov. 20 1968
- Federal Register 36 128 July 2 1971
- State of California Air Resources Board Jan. 21 1970