Method of prolonging the life of glow plugs

Details Method of prolonging the life of glow plugs Method of prolonging the life of glow plugs

1996-06-12

1998-09-22

Nelli, Raymond A.

Internal-combustion engines

Igniters

Incandescent

F02B 908

Patent

active

058099573

ABSTRACT:
A method of prolonging the life of glow plugs comprises the steps of providing a variable displacement pump rotatably connected to a internal combustion engine; driving a hydraulic motor at a generally constant speed with the hydraulic output of the variable displacement pump and directly connecting an alternator to the hydraulic motor to energize the glow plugs with an AC current and voltage and controlling the AC current to maintain a generally constant glow plug temperature from startup and throughout the entire operating range of the internal combustion engine.

REFERENCES:
patent: 3797242 (1974-03-01), Bowdish
patent: 4541899 (1985-09-01), Mase et al.
patent: 4563568 (1986-01-01), Takizawa
patent: 4762982 (1988-08-01), Ohno
patent: 5201803 (1993-04-01), Goto et al.
patent: 5216983 (1993-06-01), Nilson
patent: 5241821 (1993-09-01), Hoshino
patent: 5287831 (1994-02-01), Anderson et al.
patent: 5291864 (1994-03-01), Suga et al.
patent: 5367994 (1994-11-01), Hinkle
patent: 5499497 (1996-03-01), De Freitas

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