System Description

INTAKE DOOR CONTROL SYSTEM


WITH ACCS : System Description

The intake door is automatically controlled by the ambient atmospheric CO, NO2 and unpleasant odor, temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and
ON/OFF operation of the compressor.

SYSTEM OPERATION
The intake door control judges intake door position based on the ambient atmospheric CO, NO2 and unpleasant odor, ambient temperature, the intake air temperature and the in-vehicle temperature. When DEF or OFF switch is pressed, the unified meter and A/C amp. sets the intake door at the FRE position.

Door Motor Circuit






Intake Door Control Specification





- Intake door position is basically fixed at FRE when FRE indicator of intake switch is OFF or DEF switch is ON.
- Intake door position is basically fixed at REC when REC indicator of intake switch is ON.
- Intake door automatic control selects FRE, 20 - 80%FRE, or REC depending on a target air mix door opening angle, based on in-vehicle temperature, ambient temperature, and sunload.

Automatic intake control (exhaust gas/outside odor detecting mechanism)

Description
- In addition to air inlet automatic control of automatic air conditioning system, unified meter and A/C amp. controls automatically air inlet according to signal from exhaust gas/outside odor detecting sensor, so that unpleasant outside odor does not enter in passenger room.

Operation Description
- When AUTO switch is pressed, AUTO intake indicator and REC indicator turn ON. Air inlet is fixed to recirculation for approximately 5 minutes, and then is switched to automatic intake control (exhaust gas/outside odor detecting mechanism).
- Air inlet switches to recirculation when exhaust gas or outside odor is detected while automatic intake control
(exhaust gas/outside odor detecting mechanism) is operated. After that, air inlet switches to fresh air intake when exhaust gas or outside odor becomes not detectable.

NOTE:
- Sensitivity of exhaust gas/outside odor detecting sensor can be changed. Automatic Air Conditioner.
- Automatic intake control (exhaust gas/outside odor detecting mechanism) does not operate when ambient temperature is -2�C (28�F) or less. In this case, control is only for control of automatic air inlet of automatic air conditioning system.