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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
Contents
Click a Section Tab
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
LF1A Transfer
Active Stabilizer Suspension System
Steering
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
Overall
–
L110F hybrid transmission mainly consists of the
following components
-A -W
MG1
MG2
2-stage Motor Speed
Reduction Device
Mechanical
Oil Pump
(driven by the
engine)
Hydraulic
Control Unit
Power Split Device
Transfer
(LF1A)

[Liters (US qts, Imp. qts)]
127 (280)133 (293)Service Weight*
2
[kg (lb)]
Max. System Voltage
Max. Torque
Max. Output [kW (HP]
Type
Max. System Voltage
Type
MG2
MG1
←AC 650 V
275 Nm (203 ftlbf)300 Nm (221 ftlbf)*
1
147 kW (197 HP)165 kW (221 HP)*
1
←Permanent Magnet Motor
←AC 650 V
←Permanent Magnet Motor
L110 (GS450h)L110F (LS600hL / LS600h)Transmission Type
*
1
: These are tentative values.
*
2
: Weight shows the figure with the engine oil and engine coolant fully filled.
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission

MG2
Engine
To Transfer
-A -W
Power Split Device
•
Sun Gear: MG1
•
Planetary Carrier: Engine
•
Ring Gear: Wheel
B1 B2
2-stage Motor Speed Reduction Device
•
Front Sun Gear: B1
•
Rear Sun Gear: MG2
•
Planetary Carrier:Wheel
•
Ring Gear: B2
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
Gear Train
-A -W
Power Split Device
The power split device distributes the
engine power as appropriate to
directly drive the vehicle as well as

(connected to the
propeller shaft)
Rear Sun Gear
(connected to
the MG2)
Ring Gear
(connected to the
No. 2 brake [B2])
Front Sun Gear
(connected to the No. 1
brake [B1])
Short Pinion
Gear
Long Pinion
Gear
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
2-stage Motor Speed Reduction Device
–
Realize high speed and high torque by compact MG2
-A -W
Torque
Vehicle Speed
Range of Lo Gear
Drive
(for high torque)
Range of Hi Gear Drive
(for high speed)
For -A

R


P
B2B1Shift Position
B1
SL1
B2
SL2
HV
ECU
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
2-stage Motor Speed Reduction Device
–
Operation
-A -W
[Lo Gear]
[Hi Gear]
MG2
B1 B2
MG2
B1 B2
B1 B2
B1 B2
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
MG1
L110F Hybrid Transmission

3.90
3900
B2
1000
L110F Hybrid Transmission
Nomographic Chart
–
2-stage Motor Speed Reduction Device
•
Lo Gear
-A -W
Reduction Ratio: 3.900
B1
Ring
Gear
(Lo)
Front
Sun Gear
(Hi)
MG2
B1 B2
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
MG2
B1 B2
L110F Hybrid Transmission
Nomographic Chart
–
2-stage Motor Speed Reduction Device
•

-A -W
-
+
rpm,
Torque
Rear
Sun Gear
(MG2)
Linked
Sun
Gear
(MG1)
Carrier
(Engine)
Ring
Gear
(Wheel)
B2 B1
Ring
Gear
(Lo)
Front
Sun Gear
(Hi)
+
-
rpm,
Torque
Carrier
(Wheel)

controller in accordance with the signal from HV ECU
-A -W
HV ECU
OPST
OPM1
TOPM
SIG
OPST
Motor Speed
(Duty Signal)
Motor
(3 Phase)
Oil Pump State
(Duty Signal)
Oil Pump
Controller
Coil Temp.
Sensor
Motor Position
Sensor
U V W
OHU
OHV
OHW
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
Lubrication System
–
Electric oil pump

1,000
0
0
2,000
3,000
4,000
5,000
System normal
System malfunction
Controller overheat 2
Controller overheat 1
Low power supply
Motor
Stop
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
Lubrication System
–
Hydraulic circuit
•
Both pumps are placed parallel with a check valve to
avoid loss of pressure through the inoperative pump
-A -W
Mechanical
Oil Pump
Electric Oil
Pump
Check
Valve

Solenoid
Valve SL2
Solenoid
Valve S1
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
ATF Pressure Switch
–
3 pressure switches are used to detect operation
condition of hydraulic unit
-A -W
ATF Pressure
Switch 1
ATF Pressure
Switch 2
ATF Pressure
Switch 3
Lower Valve Body
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
Reference
The driver selects the “S” range position by moving the shift lever. At this time, the
engine brake range position is selected from the S4 to S7 range depending on the
vehicle speed.
L110F Hybrid Transmission
Sequential Shiftmatic System
–
In the S range, 8 stages of engine braking force can
be selected by operating the shift lever.

Inverter
L110F Hybrid Transmission
Sequential Shiftmatic System
–
The engine brake force control
-A -W
Confidential
Engine
MG1
Week Engine Brake Force
Fuel Cut
Strong Engine Brake Force
MG2
Inverter
Inverter
Engine
MG1
Fuel Cut
MG2
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Body ElectricalModel Outline Hybrid System Engine Chassisfor Technician
L110F Hybrid Transmission
Sequential Shiftmatic System
–
This system limits the switching of the engine brake
range if the vehicle is cruising at a speed that is higher
than the limit speed, and informs the driver by
sounding an alarm.
–
If the vehicle accelerates from engine brake range