Heating systems – Automatic control – Heat source is a reverse cycle refrigerating system or heat...
Patent
1989-06-09
1991-01-15
Makay, Albert J.
Heating systems
Automatic control
Heat source is a reverse cycle refrigerating system or heat...
237 123C, 431 78, 431 75, 236 21R, G05D 2300
Patent
active
049847368
ABSTRACT:
By temperature gradient detection it is determined for the liquid combustion chamber auxiliary heater for motor vehicles, whether e.g. a flame blow-off has taken place, which has to be interpreted as a malfunction and hwich necessitates the discontinuation of fuel supply. Alternatively, it might merely show the switching from a high setting to a low setting. In the latter case a temperature drop to a lower operation temperature occurs also. However, the temperature drop is not as steep as in the case of a flame blow-off. At certain points in time t.sub.1 the target temperature for a point in time t.sub.2 is calculated by the detected temperature according to a certain algorithm having specific device properties as parameters. At this point in time the calculated target temperature is checked for errors.
REFERENCES:
patent: 4389184 (1983-06-01), Tanaka et al.
Reiser Peter
Schaffert Wolfgang
Steiert Edwin
Eberspacher J.
Makay Albert J.
Sollecito John
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