Table of Contents
Advertisement
Understanding the Vehicle
Mild Hybrid System
Information (2.0 L4 MHEV
only)
System Components
2
The mild hybrid system installed on
the MHEV models, in addition to the
traditional gasoline thermal engine,
is composed of the following main
components:
1
Belt Starter Generator (BSG) 48 V
installed on the thermal engine RH
side.
2
eBooster 48 V with flap-valve in
front of the thermal engine.
3
Hybrid system ECU in the engine
compartment RH side.
4
48 V connecting cable.
5
48 V Li-Ion Battery housed in the
luggage compartment.
6
48 V/12 V DC/DC converter on the
48 V battery.
14
7
Fan battery cooling.
8
Cooling ducts.
9
Air intake grill.
The 48 V battery containing twelve
lithium ion cells that needs no
maintenance. The battery housing
also contains a battery control and
supervision unit, a relay, a fuse, a shunt
resistor, two temperature sensors and a
pressure balancing unit.
The main functions of the battery
system are to store the electrical energy
supplied by the 48 V power supply
during braking and returns it to the
system when the electric motor starts
operating parallel to the thermal engine.
During its operation, the 48 V battery
can develop heat which is dissipated
using a fan and a series of ducts. The fan
sucks the air from the rear bottom side
passenger compartment through a air
intake grill then directs it through ducts
to the battery. To ensure the cooling of
the 48 V battery it is important that the
air intake remains free.
WARNING!
Do not cover, close or throw objects
inside the air intake grill on the rear
bottom side passenger compartment
with a plug/stopper. The air must
circulate in the battery system at any
time to prevent its heating.
The BSG is driven by the crankshaft by
means of a belt and is at the same time
able to perform the function of current
generator and that of electric motor, also
with the function of starter motor for the
thermal engine in some situations such
as in the phases Start&Stop. In the latter
case, after stopping the car in a stop and
automatic engine shutdown with the
Start&Stop system, re-ignition occurs
through the BSG. The traditional starter
motor is used only for the first ignition of
the car, when you have power from the
Advertisement
Chapters
Table of Contents
