An electronic fuel injection apparatus adaptively controlled by a microprocessor device is described which optimizes the air-fuel ratio in spark-ignited engines by using either engine efficiency or work produced per cycle as performance indices. The choice of the performance index is based on the position of the accelerator, so that specific fuel consumption is as low as possible at partial loads and output reaches its maximum at full load. A gradual index shift, necessary to assure smooth engine operation, is provided by also using combinations of efficiency and work produced as performance indices. Both the theory of operation and the development of an experimental prototype are discussed in detail. Experimental results are reported to demonstrate the validity of the system.
Closed-loop electronic fuel injection for spark-ignited engines
Elektronische Regelung der Benzineinspritzung fuer funkengezuendete Motoren
IEEE Transactions on Vehicular Technology ; T-35 , 1 ; 30-38
1986
9 Seiten, 7 Quellen
Article (Journal)
English
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