Heater with glow plug/flame monitor

Details Heater with glow plug/flame monitor Heater with glow plug/flame monitor

2005-05-10

2005-05-10

Gravini, Stephen (Department: 3749)

Combustion

Process of combustion or burner operation

Decarbonizing, cleaning or purging

C431S011000, C431S072000, C431S259000

Reexamination Certificate

active

06890170

ABSTRACT:
A heater in which, during the glow plug ramp time interval, the amount of energy supplied per unit of time to the glow plug/flame monitor can be successively changed, and a control unit which is operationally coupled to the glow plug/flame monitor. To enable continuous flame monitoring during the starting phase of the heater with the control unit, the resistance value of the glow plug/flame monitor is determined during the glow plug ramp time interval and compared to a threshold value RGS, and when the threshold value RGSis not reached, a flame-out signal is generated.

REFERENCES:
patent: 4308463 (1981-12-01), Giras et al.
patent: 4352656 (1982-10-01), Michaud et al.
patent: 4778377 (1988-10-01), Kawamura
patent: 5402757 (1995-04-01), Eller et al.
patent: 6743012 (2004-06-01), Wolf
patent: 198 22 140 (1999-08-01), None
patent: 199 03 305 (2000-08-01), None

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