Ignition safety control system

Details Ignition safety control system Ignition safety control system

1975-07-28

1977-07-26

Dority, Jr., Carroll B.

Internal-combustion engines

Starting device

For airplane

114211, 307 9, 307116, F02N 1700, B63J 200

Patent

active

040375781

ABSTRACT:
An automatic digital safety system for controlling the starting and continued energization of one or more internal combustion engines within an engine compartment and for controlling the energization of exhaust blowers in fluid communication with the engine compartment. A guardian control unit disables starter motors and ignition coils of the engines, while simultaneously energizing the exhaust blowers for a first predetermined time interval after their ignition switches are turned ON. Blower sensor circuits sense the energized state of the blowers. Whenever the sensors indicate that the blowers are not energized when enabled, the system disables the engines. After the first predetermined time interval, the engine coils and starters are enabled and the blowers remain energized. If the ignition switches are turned off after the first predetermined time interval, the engines will remain enabled for a second predetermined time interval and the blowers will remain running for a third predetermined time interval after the switches are turned OFF. Engine sensor networks sense the operative state of the engines. If the engines are started when enabled to do so, and continuously remain running for a fourth predetermined time interval, the blowers are deenergized. Whenever an engine stops running ater the fourth predetermined time interval, and its ignition switch is ON, the blowers are automatically reenergized.

REFERENCES:
patent: 3315584 (1967-04-01), Van Ranst
patent: 3489912 (1970-01-01), Hoffman
patent: 3599591 (1971-08-01), Edelson
patent: 3662727 (1972-05-01), Abplanalp
patent: 3675034 (1972-07-01), Abplanalp
patent: 3948202 (1976-04-01), Yoshikawa
patent: 3951091 (1976-04-01), Doench

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