Preheating apparatus for Diesel engines

Details Preheating apparatus for Diesel engines Preheating apparatus for Diesel engines

1980-10-09

1982-03-02

Cox, Ronald B.

Internal-combustion engines

Igniters

Incandescent

123179BG, F02B 908, F02M 1700

Patent

active

043174345

ABSTRACT:
A parallel circuit of an ordinary resistor exhibiting an ordinary resistance characteristic and a starting resistor abruptly increasing its resistance at a certain temperature is inserted between glow plugs in a Diesel engine and a battery. The resistance of the starting resistor is smaller than that of the ordinary resistor at a normal temperature. The resistance of the starting resistor becomes larger than that of the ordinary resistor when a large amount of current flows through the starting resistor. Therefore, current flows from the battery to the glow plugs mainly through the starting resistor at first, and then it flows mainly through the ordinary resistor. A voltage drop of the battery due to engine starting is prevented by bypassing the parallel circuit by a resistor. Preferably, the starting resistor is of honeycomb shape.

REFERENCES:
patent: 4280452 (1981-07-01), Kawamura

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