Internal-combustion engines – Starting device – For airplane
Patent
1975-02-03
1977-06-07
Myhre, Charles J.
Internal-combustion engines
Starting device
For airplane
123 32EA, F02B 300, F02D 104
Patent
active
040276414
ABSTRACT:
A fuel injection control apparatus provides electrical pulses whose length determines the amount of fuel supplied to the injection valves of the engine. These pulses can be extended by a circuit including a temperature dependent resistor when the engine has not reached operational temperature. This same mechanism is utilized to lengthen the fuel delivery control pulses even when the engine is warmed up, i.e., under hot-start conditions, by connecting a switching transistor in series with the temperature-dependent resistor that monitors the engine temperature. If, while the engine is hot, the starter motor is being cranked longer than a predetermined length of time, the switching transistor turns off and causes the fuel injection pulse to be lengthened, thereby supplying additional fuel to the engine to overcome a possible fuel vapor lock.
REFERENCES:
patent: 3616784 (1971-11-01), Barr
patent: 3683871 (1972-08-01), Barr et al.
patent: 3716034 (1973-02-01), Schmid
patent: 3734067 (1973-05-01), Glocker et al.
patent: 3741171 (1973-06-01), Dautel
patent: 3742920 (1973-07-01), Black
patent: 3785353 (1974-01-01), Borisov et al.
patent: 3792693 (1974-02-01), Luchaco
Cox Ronald B.
Greigg Edwin E.
Myhre Charles J.
Robert Bosch G.m.b.H.
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