BMW 3: Operating principle
BMW 3 Series G20 (2018-2025) Training manual / Electrical Heating / Operating principle
If the driver adjusts a desired temperature at the IHKA controls, the IHKA calculates a corresponding nominal temperature and compares it to the actual output temperature of the electrical heating.
There is a coolant temperature sensor at the electrical heating output for this purpose. This way the IHKA control unit can decide whether the heat from the combustion engine is sufficient to heat the passenger compartment or whether the electrical heating should be switched on. If the temperature of the coolant is too low, the electric heating can heat up to a total of 6 stages. The electrical heating is always condition-based thanks to this control operation.
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Low coolant temperature
When the coolant temperature is low, for example after driving off, or in
all-electric driving, the electric
changeover valve is activated by the Body Domain Controller (BDC). The
electrical changeo
Antifreeze and corrosion inhibitor
The cooling system of the G20 PHEV is filled with the new antifreeze and
corrosion inhibitor Frostox
HT-12. The new antifreeze and corrosion inhibitor increases the long-term
stability and corrosion
B46TU-B48TU Engines
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h2 {color: green;}
h3 {color: blue;}
h4 {color: #FF00FF;}
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Chain drive - Crankshaft drive
Features:
Chain drive at the side of the engine emitting the forces.
Single-part chain drive for driving the camshafts.
Single sleeve-type chain 8 mm.
Electric motor of the combined oil-vacuum pump via a separate chain.
Plastic tensioning and guide rail.
Hydraulic chain tensioner with sp
General information
Music tracks, audio books, and podcasts can be
played back. Sound is played back through the
vehicle loudspeakers.
Settings are stored for the driver profile currently
used.
Depending on the vehicle equipment, the following
audio sources can be used:
Music hard disk.
USB storage device.
Bluetooth
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