Glow plug control device for diesel engines

Details Glow plug control device for diesel engines Glow plug control device for diesel engines

1980-05-27

1982-06-29

Reynolds, B. A.

Electric heating

Heating devices

With current connection and/or disconnection means

219486, 219493, 219512, 123179H, H05B 102, F02N 1700

Patent

active

043373895

ABSTRACT:
A thermal device for controlling the temperature of glow plugs in a diesel engine in which current is applied to the glow plugs from the battery through a relay, the relay in turn being actuated by a thermally controlled switch controlled by a heater. The heater applies heat to the thermal-sensitive switch. The relay also controls current through the heater so that the heater cycles in unison with the glow plugs. The thermally-operated switch includes a bimetallic element which is heated by the heater. The bimetallic element is mounted in the engine block so as to be subject to the same ambient temperature conditions as the glow plugs. A thermal timer responsive to the same ambient temperature conditions includes a resistance heater element energized from the alternator. The thermal timer switch de-energizes the relay when heated to a predetermined temperature.

REFERENCES:
patent: 2970201 (1961-01-01), Woodward
patent: 3675033 (1972-07-01), Richard et al.
patent: 3691393 (1972-09-01), Papachristov
patent: 4088109 (1978-05-01), Woodruff et al.
patent: 4106465 (1978-08-01), Bernhardt et al.
patent: 4177785 (1979-12-01), Sundeen

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