Toyota Camry Hybrid AHV40 Manual page 18

TH-18
8. During Reverse Driving/(G)
D When the vehicle is being driven in reverse, the required power is supplied by MG2. At this time, MG2
rotates in the opposite direction, the engine remains stopped, and MG1 rotates in the normal direction
without generating any electricity.
D During reverse driving, when any of the SOC condition, battery temperature, engine coolant temperature
and electrical load condition reaches a specified level, the engine may start. The following illustration
represents the condition when the engine is not running.
Hybrid
Transaxle
D The conditions of the planetary gear are opposite to those described in "Starting and Running with MG2".
Due to the engine being inactive, the rotational speed of the carrier is 0 rpm but the sun gear (MG1) rotates
freely in the (+) direction balancing the rotating ring gear (Output).
"
Nomographic Chart
Sun Gear
(MG1)
(+)
(-)
"
Condition of Power Split Planetary Gear Unit
Rotational Direction
Torque Condition
THS II (TOYOTA HYBRID SYSTEM II)
Engine
Compound
Gear Unit
MG1
Inverter
MG2
Assembly
Front
Wheel
A
Carrier Ring Gear
(Engine) (Output)
(+) (+)
rpm
0
(-) (-)
02DTH94Y
Sun Gear (MG1)
+
0
: Electrical Path
: Mechanical Power Path
HV
Battery
02HTH11TE
"
Power Split Planetary Gear Unit Operation
Sun Gear
(MG1)
A
Carrier (Engine) Ring Gear (Output)
0
0
A
Carrier
(Engine)
Ring Gear
(Output)
02DTH100Y
-
-