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4
5
Hybrid system
Air conditionin
g
Question
A
nswer
I
t
see
m
s
t
o
m
e
t
ha
t t
he
v
ehicle
r
u
n
s
less
o
n
e
lectric when the heating or air conditioning is
operatin
g
, is that ri
g
ht
?
The demand
f
or heatin
g
or air conditionin
g
ma
y
require the startin
g
o
f
the Diesel en
g
ine until the
des
ir
ed
l
e
v
e
l
of
co
m
fo
rt i
s
a
tt
a
in
ed
.
Normal h
y
brid operation is simpl
y
put back. The period can be lon
g
er under low or ver
y
hi
g
h
ambient temperatures.
It seems to me that when it is ver
y
hot and the
air conditionin
g
is workin
g
, the vehicle runs on
e
lectric for shorter periods. Is that ri
g
ht?
When it is hot, the periods when the Diesel en
g
ine is put on standb
y
and the vehicle runs on
e
lectric are necessaril
y
restricted in order to limit the difference between the temperature in the
v
e
hi
c
l
e
a
n
d
th
e
l
e
v
e
l
o
f
co
mf
o
rt
se
l
ec
t
ed
.
In ver
y
hot weather, it is alwa
y
s possible to press the Eco OFF button
(
which brin
g
s the vehicle
o
ut o
f
ZEV mode and prevents electric runnin
g
or the stoppin
g
o
f
the en
g
ine
)
to
g
ive pre
f
erence to
temperature control
(
keeps the air conditionin
g
runnin
g)
.
Special H
y
brid4 features
Question Answer
Can I tow with m
y
h
y
brid vehicle and how much?
A
H
y
brid4 vehicle can tow between 500 k
g
and 800 k
g
(
see the "Towin
g
" section
)
.
This allows a
j
et ski or two-wheeler on a trailer to be towed, for example.
The "technical" reason
f
or the limit is related to maintainin
g
adequate coolin
g
capacit
y
f
or the
i
nterna
l
com
b
ust
i
on en
gi
ne as we
ll
as t
h
e
hyb
r
id
components t
h
at are a
l
so coo
l
e
d
by
t
h
e en
gi
ne
'
s
c
oo
li
n
g
s
y
stem.
Wh
y
does en
g
ine brakin
g
seem so stron
g?
When
y
ou take
y
our
f
oot o
ff
the accelerator, the en
g
ine brakin
g
results mainl
y
f
rom the ener
gy
recover
y
by
t
h
e e
l
ectr
i
c motor.
This leads to a hi
g
her level o
f
deceleration than a conventional vehicle and so allows the recover
y
of
f
ree energy.
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