Alternating current control apparatus and method for glow plugs

Details Alternating current control apparatus and method for glow plugs Alternating current control apparatus and method for glow plugs

1996-10-18

1998-03-10

Argenbright, Tony M.

Internal-combustion engines

Igniters

Incandescent

F02P 1902

Patent

active

057249326

ABSTRACT:
In one aspect of the present invention, an apparatus for controlling the temperature of a plurality of glow plugs of a multi-cylinder internal combustion engine is disclosed. A voltage sensor produces a signal relative to the magnitude of the sensed voltage across a glow plug. A microprocessor compares the magnitude of the sensed signal with a preselected magnitude indicative of a predetermined temperature glow plug and responsively produces a current command signal. An alternator receives the current command signal and responsively delivers alternating current to the glow plugs.

REFERENCES:
patent: 4858576 (1989-08-01), Jeffries et al.
patent: 5367994 (1994-11-01), Hinkle

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