On-demand control of ancillary units saves energy
Intelligent energy management in the new BMW 3-Series is further enhanced by the ancillary units, which consume significantly less energy compared with conventional systems. Examples include the on-demand coolant pump, the electronically controlled oil pump and the electromechanical steering system, which only consumes electric power when steering assistance is actually required. The special air conditioning compressor featured on many of the sports sedan models works on the same principle. As soon as the driver switches the air conditioning off, the belt drive to the compressor is disconnected by a magnetic clutch, to minimise power drain.
See also:
Microfilter/activated-charcoal filter
The microfilter traps dust and pollen in the incoming
air.
The activated-charcoal filter removes gaseous
pollutants from the outside air that enters the
vehicle.
The service center replaces th ...
Coolant temperature
A warning lamp will come on if the coolant, and
therefore the engine, becomes too hot. In addition,
a message will appear on the Control Display.
Check the coolant level ...
Flat Tire Monitor FTM
The conceptThe system does not measure the actual inflation pressure in the tires.
The system detects a pressure loss in a tire by comparing the rotational speeds
of the individual wheels while mov ...
