Electric heating – Heating devices – Resistive element: igniter type
Patent
1983-04-26
1985-05-28
Bartis, A.
Electric heating
Heating devices
Resistive element: igniter type
52171, 165 41, 219202, 219203, 219522, 237 123B, H05B 102, B60H 100
Patent
active
045202583
ABSTRACT:
A heater arrangement for an automotive vehicle includes a switching arrangement having a conventional control device which is fed signals from sensors sensing the temperature outside of the vehicle, the temperature inside the vehicle, the temperature of the engine coolant, and the speed of the vehicle. A pulse sequence is generated for controlling a valve which in turn controls the flow of a heating medium to the heating system for heating the passenger compartment of the vehicle, the duration of the pulses in the sequence being varied in accordance with respective conditions. A frequency changer, timer and switch are disposed between an inverter and relay for concomitantly controlling an electric auxiliary heater on the vehicle, such as an electric rear window heater. The switching arrangement provides for switching of the auxiliary heater in conjunction with the switching of the control device for the heating system for the passenger compartment. In this way, separate circuit means for the auxiliary heater can be omitted, and operating convenience is facilitated and expenditure for circuit elements can be considerably reduced. At the same time, energy consumption for the auxiliary heater can be limited because of the auxiliary heater only being activated when needed.
REFERENCES:
patent: 3440398 (1969-04-01), Nilssen
patent: 3624354 (1971-11-01), Heidorn
patent: 3858027 (1974-12-01), Phillips
patent: 4196338 (1980-04-01), Edel
Bartis A.
Bayerische Motoren Werke A.G.
Forsberg Jerold M.
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