Engine start enhancement device

Details Engine start enhancement device Engine start enhancement device

1979-09-13

1981-07-28

Argenbright, Tony M.

Internal-combustion engines

Starting device

For airplane

123145A, 123179H, 219499, F02N 1700, F02P 1902

Patent

active

042804523

ABSTRACT:
A device for enhancing the starting of a diesel engine in which the current flow to the glow plugs of the engine during the warm-up time is controlled so as to heat the engine as quickly as possible without damage to the glow plugs. Each glow plug is connected in series with a low value resistance between an output terminal of the relay and one of the battery terminals. Also connected across the output terminal of the relay and the output battery terminal is a series combination of three resistors one of which is in thermal contact with the first resistor. A comparator is connected to the middle points of the Wheatstone bridge circuit thus formed. Relay operating means is provided to open the relay contacts when an output signal is produced by the comparator indicating that the glow plug temperature is sufficiently high. On-off cycling of the current flow to the glow plug is continued until the engine is ready to start.

REFERENCES:
patent: 3789190 (1974-01-01), Orosy et al.
patent: 3845274 (1974-10-01), Krenke et al.
patent: 3866587 (1975-02-01), Knapp
patent: 4196712 (1980-04-01), Kawamura et al.

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