Environmental Engineering Reference
In-Depth Information
Table 2.7 Single M/G power split architecture component ratings
Internal combustion engine
Engine type
Gasoline, V6, 2 L
Max torque and power
172 Nm at 4,400 rpm
96 kW at 5,600 rpm
Electric motor-generator
M/G type
Permanent magnet
Torque and power
122 Nm at 1,000 rpm
41 kW at 4,000 rpm
Battery
Type
Nickel-metal hydride
Voltage
288 V (40 modules of
7.2 V each)
Power
22 kW maximum
AT
Automatic transmission
ratios
First: 3.027
Second: 1.619
Third: 1.000
Fourth: 0.694
Rev: 2.272
Final drive: 4.083
Ratings of the IHAT system are described in Table 2.7 for a 1,650 kg curb
weight vehicle.
With this propulsion system architecture, the engine speed can be held constant
during the entire launch interval. However, the M/G must slew from generating
to motoring mode and from reverse rotation to forward rotation in the process.
Figure 2.29 illustrates the velocities of the planetary gears and vehicle speed versus
time during vehicle acceleration.
Launch mode
ICE
Carrier = G
U
veh
M/G
M/G = Generating
M/G = Motoring
Figure 2.29 Single M/G power split acceleration performance
