Heater control for a motor vehicle

Details Heater control for a motor vehicle Heater control for a motor vehicle

1976-07-02

1977-11-15

Wayne, William E.

Heating systems

Heat and power plants

Vehicle

62209, 236 9R, 236 91F, B60H 102

Patent

active

040582558

ABSTRACT:
A heating system for a motor vehicle has temperature sensors for gauging the compartment temperature as well as for gauging the temperature of the effluent hot air. These sensors are connected in series, with the compartment sensor generating the more significant control signal. The flow of heating medium, for example engine water, is regulated by a valve under the control of a regulator which compares the sensors signals with a set-point value. The valve may be cyclically actuated by pulses of fixed frequency but having a width which depends on the results of the signal comparison.

REFERENCES:
patent: 2252142 (1941-08-01), Simon
patent: 2782994 (1957-02-01), Dotson
patent: 3149293 (1964-09-01), Farkas
patent: 3658244 (1972-04-01), Caldwell
patent: 3995810 (1976-12-01), Banks

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