Toyota Camry Hybrid AHV40 Manual page 17

7. During Deceleration Driving/(F)
Deceleration in "D" Range
D While the vehicle is decelerated with the shift lever in the D position, the engine is turned OFF and the
motive force changes to zero. At this time, the wheels drive MG2, causing MG2 to operate as a generator,
charging the HV batteries.
D If the vehicle decelerates from a higher speed, the engine maintains a predetermined speed without
stopping, in order to protect the planetary gear unit.
Hybrid
Transaxle
D During deceleration, the ring gear is rotated by the rear wheels. Under this condition, due to the engine
being inactive, the rotational speed of the carrier is 0 rpm. In addition, since MG1 does not generate any
torque, no torque acts on the sun gear. However, 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
(-) (-)
02DTH86Y
Sun Gear (MG1)
-
0
: Electrical Path
: Mechanical Power Path
HV
Battery
02HTH17TE
"
Power Split Planetary Gear Unit Operation
Sun Gear
(MG1)
A
Carrier (Engine) Ring Gear (Output)
0
0
TH-17
A
Carrier
(Engine)
Ring Gear
(Output)
02DTH99Y
+
0