Internal-combustion engines – Noncompression
Patent
1978-06-01
1979-04-10
Myhre, Charles J.
Internal-combustion engines
Noncompression
123179G, 123179L, F02B 300
Patent
active
041482824
ABSTRACT:
A control circuit for a fuel-injected internal combustion engine provides a substitute program for generation of fuel injection control pulses during engine starts at low temperatures. The substitute injection control pulses are made dependent on the ambient or engine temperature in the sense that, the lower the temperature, the greater is the length of the injection pulses, i.e., the larger is the quantity of initially injected fuel. The length of the injection pulses also depends on the elapsed duration of the engine starting attempt in the sense of gradually reducing the injected fuel quantity as the unsuccessful engine cranking proceeds. A fully opened throttle during engine cranking signals a flooded engine condition and completely interrupts fuel injection.
REFERENCES:
patent: 3504657 (1970-04-01), Eichler et al.
patent: 3628510 (1971-12-01), Moulds et al.
patent: 3646917 (1972-03-01), Nagy
patent: 3683871 (1972-08-01), Barr et al.
patent: 3698373 (1972-10-01), Nagasawa
patent: 3734067 (1973-05-01), Glockler et al.
patent: 3949714 (1976-04-01), Mitchell
patent: 3991726 (1976-11-01), Kawai et al.
Grassle Alfred
Schnurle Hans
Wilfert Thomas
Greigg Edwin E.
Myhre Charles J.
Reynolds David D.
Robert & Bosch GmbH
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