Heating systems – Heat and power plants – Vehicle
Patent
1982-10-22
1984-11-13
Wayner, William E.
Heating systems
Heat and power plants
Vehicle
236 91F, 165 16, 165 43, G05D 2300
Patent
active
044820925
ABSTRACT:
A heating and air-conditioning installation for motor vehicles, in which an adjustable desired temperature is kept constant in the interior space of the motor vehicle independently of changing conditions, includes a heat-exchanger connected to the hot water circulation of the engine as well as an adjusting member on whose position is dependent the heat quantity supplied to the vehicle interior space; the position of the adjusting member is controlled by an output signal produced by an electronic circuit as a function of the sensor detecting the heat quantity supplied to the vehicle interior space, an interior sensor, a setting device and an outside sensor; a switching device operable to switch from fresh-air operation to recirculated-air operation is also controlled as a function of a signal of the electronic circuit; the electronic circuit includes a delay element to produce a time-delayed intermediate signal from the values obtained from the interior sensor, the outside sensor and the setting device; the intermediate signal produces together with the value determined by the sensor detecting the heat quantity supplied to the vehicle interior space, an output signal for the adjusting member; the electronic circuit also produces a signal as a function of the difference between the value detected by the outside sensor and the value determined at the setting device which controls the switching over from fresh-air circulation to recirculated-air operation.
REFERENCES:
patent: 4143706 (1979-03-01), Schnaibel et al.
patent: 4378087 (1983-03-01), Sakurai et al.
Biber Wolfgang
Stahle Werner
Stolz Albert
Daimler-Benz Aktiengesellschaft
Sollecito J.
Wayner William E.
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