16 2. STRUCTURAL DESCRIPTION AND WORK PRINCIPLE OF FULL HYBRID VEHICLES
As the loss power in the transformation mechanism equals to actual loss power, Eqs. (2.59)
and (2.61) can be combined to give
P
c
T
D
1
c
S2.S1;r/
˛
2
˛
2
1
P
S2
D P
T
: (2.62)
e efficiency of the CPGS in the over speed driving mode can be expressed as
D
1
1 C
P
T
j
P
r
j
D
j
P
r
j
.
˛
2
1
/
j
P
r
j
.
˛
2
1
/
C
1
c
S2.S1;r/
˛
2
P
S2
(2.63)
D
j
.
T
L
C J
r
a
r
/
!
r
j
.
˛
2
1
/
j
.
T
L
C J
r
a
r
/
!
r
j
.
˛
2
1
/
C
1
c
S2.S1;r/
˛
2
.
T
E2
J
S2
a
S2
/
!
S2
:
2.1.4 STANDSTILL CHARGING MODE
In this mode, when the vehicle stops, the ICE charges the battery. e lever diagram is indicated
in Fig. 2.7.
S1 S2Carrier Ring
E1 E2Engine Out
+
–
1
T
E2
T
E1
ω
E1
ω
E2
ω
ring
T
Engine
-i
1
i
2
‒ 1
Figure 2.7: Torque balance diagram.
During this mode, the speed correlation for the planetary gear components is
!
S1
> !
c
> 0 > !
S2
: (2.64)
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