Method and system for controlling a vehicle-mounted air conditio

Details Method and system for controlling a vehicle-mounted air conditio Method and system for controlling a vehicle-mounted air conditio

1981-01-07

1982-12-28

Wayner, William E.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

165 30, 165 43, 62180, F25B 2900, B60H 300

Patent

active

043656633

ABSTRACT:
A vehicle-mounted air conditioner includes a compressor which, when powered by the vehicle engine, supplies pressurized refrigerant to an evaporator to increase its cooling capacity, a heating unit located downstream of the evaporator and partially occupying the passage of air cooled and directed toward vehicle interior by the evaporator, and a mixing damper pivoted at a point upstream of the heating unit to adjust the amount of cool air presented thereto in relation to the air directed toward the vehicle interior. The compressor is coupled to the engine when the temperature in the vehicle interior indicates a demand for a temperature decrement, or decoupled from the engine when the interior temperature indicates a demand for a temperature increment. A control system detects when the compressor is switched from a first operating state to a second state and initiates a timing action to measure the elapse of time from the time of detection of the occurrence of the transient condition. A time-varying signal is generated when the measured amount of time reaches a predetermined value for controlling the mixing damper to gradually vary the amount of air presented to the heating unit in relation to the air directed to the vehicle interior.

REFERENCES:
patent: 4328855 (1982-05-01), Iwata et al.
patent: 4340113 (1982-07-01), Iwata et al.

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