Quote:
Originally Posted by Liquid2.0T
Can someone give more details on the mild hybrid system in this car? Is it for efficiency or performance?
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From the press release:
https://g20.bimmerpost.com/forums/at...8&d=1591114541
New 48-Volt Mild Hybrid System
A new 48-volt mild-hybrid system is standard on the 6-cylinder M440i xDrive Coupe. The 48- volt starter/generator unit is complemented by a separate 48-volt battery which allows for energy recuperation, storage and use during driving. Energy can be recuperated from deceleration, braking and from excess electricity generated while driving in Sport mode.
The excess energy is converted to electricity by the 48-volt starter/generator and stored in the 48-volt battery. This energy can be used by the starter/generator unit to boost performance during hard acceleration or by providing power for electronic systems, thus reducing the load on the engine and improving overall efficiency.
The 48-volt starter generator also improves efficiency by allowing the stopped engine to be restarted quickly with little vibration. The Auto Start/Stop function can now turn off the engine while the driver is braking for a stop as soon as the speed drops below 9 mph.