BMW I01 Product Information page 25

I01￿High-voltage￿Components
3.￿Electric￿Motor
• The￿maximum￿torque￿of￿250 Nm￿is￿already￿available￿from￿when￿the￿machine￿is￿at￿a￿standstill
and￿is￿available￿up￿to￿average￿engine￿speeds.￿This￿is￿why￿the￿drive￿train￿of￿the￿I01￿does￿not
need￿a￿clutch.￿Besides￿this￿technical￿feature,￿there￿is￿also￿another￿advantage￿for￿the￿customer:
The￿I01￿has￿an￿impressive￿accelerating￿ability￿from￿standstill,￿which￿results￿in￿The￿Ultimate
Driving￿Machine￿typical￿of￿BMW,￿particularly￿in￿urban￿traffic.
• The￿maximum￿torque￿only￿decreases￿again￿at￿higher￿engine￿speeds.￿However,￿it￿is￿sufficient
to￿be￿able￿to￿dynamically￿overtake￿in￿the￿speed￿range￿on￿national￿roads.
• The￿characteristic￿of￿the￿maximum￿power￿can￿be￿deduced￿from￿the￿characteristic￿of￿the
maximum￿torque:￿In￿the￿engine￿speed￿range￿in￿which￿the￿maximum￿torque￿is￿applied
constantly￿the￿maximum￿power￿increases￿linear￿to￿its￿maximum.￿Despite￿the￿falling￿torque￿at
higher￿engine￿speeds,￿the￿maximum￿power￿only￿decreases￿slightly￿to￿the￿maximum￿engine
speed.
• The￿usable￿engine￿speed￿range￿of￿the￿electrical￿machine￿is￿sufficient￿from￿0￿to￿almost
11,400 rpm.￿Owing￿to￿this￿almost￿double￿the￿engine￿speed￿range￿of￿a￿combustion￿engine,￿the
I01￿manages￿without￿a￿manual￿gearbox￿and￿still￿achieves￿a￿remarkable￿maximum￿speed￿of
150 km/h.
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