Purpose of the System

Purpose of The System




The E65/E66 IHKA automatic heating and air conditioning system is designed with technological improvements and new or modified functions. The design objectives for the E65/E66 IHKA system meets the requirements of customers worldwide for heating and cooling capability. The control display provides indication and operation.

Important primary functions are controlled by basic knobs and pushbuttons on the control panel which includes:

- Temperature control
- Blower speed
- Recirculating air
- Defrost
- Maximum Air Conditioning
- Rear window defogger
- Automatic functions

Customer Benefits:

- Straightforward understandable operation.
- Individual adjustment is possible using the virtual controls in the control display.
- Individual settings are stored in memory.
- The rear seating area has air inlet grilles in the center console and in the B pillars.
- The design allows direct and indirect air flow to all occupants.
- Individually adjustable temperature stratification (warm/cold).
- Consideration for warm and cold air distribution (head, chest and leg regions).
- The system prevents drafts.
- Primary function controls are grouped in a single unit that is readily visible and accessible to the driver and front seat passenger.
- The temperable ventilation (air stratification) is controlled by adjusting elements in the air inlet grilles and the control display.

IHKA automatic heating and air conditioning system features:

- Activated charcoal inlet air micro-filter
- Recirculation air filter
- Residual heat
- Independent ventilation
- AUC-2 sensor (gas sensor for automatic recirculation air control)
- 2 separate drives for outside air/recirculated air
- Air outlets in the B-pillars for rear passengers
- Solar sensor
- Vehicle and Key Memory for blower and temperature
- Dual temperature control (left/right)
- Automatic air distribution
- Air flow control
- Ventilation temperature stratification using the Controller in the Control Display menu
- Rear seat ventilation temperature control by the knurled knobs

E65 innovations:

Refrigerant Circuit

- Clutch-less refrigerant compressor is regulated externally by a pulse width modulation (PWM signal).
- Dryer integrated into condenser.

Heater Circuit

- Auxiliary water pump is separate from dual water valve and installed in a remote position (easier to fill and bleed).
- Heater supply is from upper radiator hose for better accessibility and pressure limitation.

IHKA Air Conditioner

- Layout with offset positioned blower unit.
- Modified functionality of the flap system for air flow control and stratification.
- Blower with single fan impeller.
- Blower control module (clock regulator with K-Bus and diagnosis capabilities). Flap drives (stepper motors) with blockage recognition.