BMW I01 Product Information page 32

I01￿High-voltage￿Components
3.￿Electric￿Motor
The￿graphics￿in￿this￿document￿show￿the￿electrical￿machine￿and￿the￿transmission￿without￿coating.￿In
the￿production￿vehicle￿sometimes￿these￿components￿are￿still￿covered￿by￿a￿foam￿part.￿This￿serves￿for
the￿acoustic￿encapsulation￿of￿the￿electric￿motor￿and￿absorbs￿noises￿which￿the￿customer￿may￿find
irritating.
The￿housing￿of￿the￿electrical￿machine￿is￿airtight￿and￿waterproof,￿as￿the￿low￿installation￿location
demands￿this￿and￿to￿avoid￿damage￿by￿water￿passing￿through.￿However,￿due￿to￿the￿big￿temperature
differences￿which￿may￿occur￿during￿operation￿there￿is￿a￿need￿for￿pressure￿compensation.￿This￿is
effected￿via￿the￿shaft￿used￿for￿the￿electrical￿connection￿for￿the￿electrical￿machine￿electronics.
The￿mounting￿and￿storage￿is￿not￿only￿related￿to￿the￿electrical￿machine￿itself,￿but￿also￿the￿entire￿drive
unit￿comprising￿the￿electrical￿machine,￿transmission￿and￿electrical￿machine￿electronics.
Mounting￿and￿storage￿of￿the￿drive￿unit￿(without￿range￿extender)
Index
1
2
3
4
26
Explanation
Transmission
Electrical￿machine￿electronics
Bearing￿for￿engine￿support￿arm
Engine￿support￿arm