17
E46 Climate Control
Solar Radiation
Solar radiation, from the sun, passes through the earths atmosphere in the form of light
(both visible and non-visible) and heat (sunshine). To date, the influence of solar radiation
on the climate control system in the vehicle has only been compensated for by an average
value stored in the control module and based on control settings and outside temperature
values.
Solar Sensor
The solar sensor can detect the amount of solar radiation that is influencing the tempera-
ture and climate in the vehicles interior. The IHKA control module monitors the input from
the solar sensor and adds the value to its processing factors. The settings of the climate
control system are changed to compensate for this additional influence.
The settings of the following IHKA components are adjusted to compensate for changes
in solar radiation:
• Blower - The blower curve is changed
• Stratification (mixing flaps) - The stratification outlet air temperature is changed (not E46)
• Ventilation - The opening angles of the ventilation flaps are changed.
To Next Page
Loading...
