BMW i8 COUPE, Owner'S Manual

Page: 104 / 264

Driving with the combustion
engine: POWER
Depending on the operating state, the combus‐
tion engine is automatically switched on:
▷ Selector lever position Sport is set.
▷ Speed for electric driving is exceeded.
▷ The high-voltage battery has an insufficient
charge.
▷ High-voltage battery is completely charged,
for instance when driving downhill.
▷ For improved traction, for instance on slip‐
pery roads.
▷ During intense accelerations or on uphill
grades.
▷ System-related requirement for hybrid com‐
ponents.
▷ Adapting to the course of the road when des‐
tination guidance is activated.
When reducing speed, the combustion engine is
switched off when the conditions for electric driv‐
ing, refer to page
102 , are met.
Assistance from the electric
motor
Concept
Depending on the operating state, the electric
motor provides assistance with additional propul‐
sive power.
ASSIST
During normal vehicle operation, the electric mo‐
tor assists the combustion engine, depending on
the situation.
eBOOST
Accelerating quickly, such as when passing, re‐
quires the maximum available power from the
electric motor. To do this, apply extra force to the
accelerator pedal.
Energy recovery: CHARGE
Concept
The high-voltage battery is recharged in part
through energy recovery. The electric motor acts
as a generator when decelerating and converts
the kinetic energy into electrical energy.
General information
Energy cannot be recovered in the following sit‐
uations:
▷ Selector lever position N is set.
▷ While drive stability control systems control
the vehicle, even though it is not indicated by
an indicator light.
▷ The high-voltage battery is fully charged.
▷ When temperature of the high-voltage bat‐
tery is very low or very high.
With cold external temperatures, it is possible
that the energy recovery is temporarily un‐
available after startup.
Functional requirements
Energy can be recovered if conditions such as
the following are met:
▷ The vehicle is moving.
▷ Speed higher than approx. 12 mph/20 km/h.
▷ Selector lever in selector lever position D, R
or S.
▷ The high-voltage battery is not fully charged.
▷ Accelerator pedal is not operated.
Seite 104
CONTROLS
Driving
104
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