http://www.vxphysics.com/EV%20Performance/Rav4_Gen_IV_2.5L_Hybrid%20Simulation-WU.xmcd
Procedure to determine
First model of the "Recreational Activity Vehicle: 4-wheel drive" RAV4 Internal Combustion Engine's (ICE) and the motor's, torque and power. Define vehicle and road parameters.
RAV4 Hybrid Synergy Drive:
Counter Gear: 40 Teeth
Pinion Gear: 18 Teeth
G-MG = 40/18 = 1.739
Final Drive Ring Gear: 23 Teeth
Final Drive Gear: 71 Teeth
Ring Gear: 71 Teeth
Ring to Pinion = 71/18 = 3.944
Motor to axle = 1.739*3.944 = 6.859
http://en.wikipedia.org/wiki/Toyota_RAV4
AWD-I (Not Off Rd. 4WD)
Rear Electric Transaxle for MGR:
powered by 3 phase wires from front.
3 Modes: 1. Startup Torque ~ 0-3 mph,
2. Front wheel slip, 3. Regen braking.
MGR Gear 6.859 :1, Taxle
T otal T axle
2700 lbf-ft
Front Taxle
= 2160 lbf-ft
M2 GR
0-60 mph:
Scale Up Prius 1.8L Atkinson ICE to 2.5L
<== Power
2.5L ICE Model Approximations
W. Lhomme1, A. Bouscayrol1, Member, P. Barrade2
Note: Accelertion Control Strategy depends critically
on the Max Speed for MG1,
the max power applied to MG2.
Gear Ratio and Efficiencies:
Max Motor Power:
Max Motor Torque:
Max Motor Speeds:
Note MG1's power is speed (6500 rpm) limited
Average Wind Velocity:
Frontal Area*:
Shape Correction Factor:
Frontal Area Corrected:
Drag Coeff:
Rolling Resistance Per Tire:
Cross Wind Drag Coff:
(Average 0% road grade)
Air Density:
Average Cross Wind:
Road Rolling Resist:
Curb Weight:
Rotational Inertia Coeff:
Passenger Weight:
Gross Weight:
Road Resistance, Fr:
Aerodynamic Loss, Fa:
Opposing Force, Fo:
ω
mg2
is not defined. Only specified as an IF xx,
Max MG1 Rotation
Initial M2 Spinup (
and Driving Profiles,
Use just
Rev up ICE from Cruise at
Vehicle Velocity Vel
See Plot Lower Right
Examination of above then gives us the form of
Use these expressions Just for generating plots at bottom of page
MG1 Motor
Torque, ICE:
Torque,MG1:
Torque MG2
Power Limited
Break Point,
Solution (rpm):
Torque, MG2:
Tractive Torq, Total:
Tractive Road Force, Total:
Tractive Road Force, Total:
Plot Terms:
Third Law of Motion:
(dv/dt is acceleration)
MG2 Torque/Power
is Limited by
ICE & Battery
Peak Power
Note that Power below the blue dotted Pm2 line less than ice @5000 rpm must be supplied to the motor M2 by the battery.
Given we
Note: The generator's output is 54 kW. This allows it produce a net charge up to 80 mph cruise.
http://www.epa.gov/nvfel/testing/dynamometer.htm
The US06 cycle represents an 8.01 mile (12.8 km) route with an average speed of 48.4 miles/h (77.9 km/h), maximum speed 80.3 miles/h (129.2 km/h), and a duration of 596 seconds.
The Federal Test Procedure(FTP) is composed of the UDDS followed by the first 505 seconds of the UDDS. It is often called the EPA75.
Data Format in File: Time, Vel, Angular Speed, MPH, Accel(g), Torque(rpm), Power (rpm), Force(v), P(v)