Starting systems for internal combustion engine

Details Starting systems for internal combustion engine Starting systems for internal combustion engine

1978-07-20

1980-06-17

Myhre, Charles J.

Internal-combustion engines

Starting device

For airplane

123179BG, 123179H, F02N 1700

Patent

active

042078539

ABSTRACT:
A starting system for an internal combustion engine includes an automatic temperature dependent delay timer which includes an output transistor and a thyristor connected across the base-emitter of the transistor so that the transistor is turned off when the thyristor is conducting. Firing pulses for the thyristor are derived from a programmable unijunction transistor which has associated with it a timing capacitor and a thermistor such that the charging time constant of the capacitor decreases with increasing temperature. The length of time for which the transistor remains on after the circuit is energized decreases with increasing temperature.

REFERENCES:
patent: 3415999 (1968-12-01), Noury
patent: 3646917 (1972-03-01), Nagy
patent: 3646918 (1972-03-01), Nagy et al.
patent: 3705571 (1972-12-01), Horn et al.
patent: 4088109 (1978-05-01), Woodruff et al.
patent: 4104534 (1978-08-01), Hill et al.
patent: 4106465 (1978-08-01), Bernhardt

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