OUTLINE
TOYOTA Hybrid System-II (THS-II)
This system optimally performs cooperative control of the 2ZR-FXE engine, and Motor Generator No. 1 (MG1) and Motor Generator No. 2 (MG2) in the P410 hybrid vehicle transaxle assembly that provides excellent transmission performance. Furthermore, this system uses a high-output HV battery with a nominal voltage of DC 201.6 V, and a variable voltage system in which a boost converter boosts the operating voltage of the system to a maximum voltage of DC 650 V.
| *1 | 2ZR-FXE Engine | *2 | P410 Hybrid Vehicle Transaxle Assembly - Motor Generator No. 1 (MG1) - Motor Generator No. 2 (MG2) |
| *3 | Inverter with Converter Assembly - Inverter - Boost Converter - DC-DC Converter |
*4 | HV Battery Assembly |
| *5 | Auxiliary Battery | - | - |
| Maximum System Output* | kW | 100 |
*: Maximum system output is engine output and MG2 output controlled by THS-II. MG2 output depends on power supplied by the HV battery.
2ZR-FXE Engine
The 2ZR-FXE is an in-line 4-cylinder, 1.8-liter, 16-valve DOHC engine.
This engine uses a high-expansion ratio Atkinson cycle, Variable Valve Timing-intelligent (VVT-i) system, Electric Throttle Control System-intelligent (ETCS-i) and Exhaust Gas Recirculation (EGR) system employing a highly efficient EGR cooler. In addition, use of an electric engine water pump assembly has eliminated the V-ribbed belt. Thus, improved engine performance, quietness, fuel economy, and cleaner emissions have been achieved.
| Item | Specification | |
| No. of Cyls. and Arrangement | 4-cylinder, In-line | |
| Valve Mechanism | 16-valve, DOHC with VVT-i | |
| Fuel System | SFI | |
| Displacement | cm3(cu. in.) |
1798 (109.7) |
| Max. Output (EEC) | kW@rpm | 73@5200 |
| Max. Torque (EEC) | N*m@rpm | 142@2800 to 4400 |
P410 Hybrid Vehicle Transaxle Assembly
The P410 hybrid vehicle transaxle assembly contains Motor Generator No. 1 (MG1) and Motor Generator No. 2 (MG2).
| *1 | Motor Generator No. 1 (MG1) | *2 | Motor Generator No. 2 (MG2) |
| Item | Specification | ||
|---|---|---|---|
| Motor Generator No. 1 (MG1) | Motor Generator No. 2 (MG2) | ||
| Type | Permanent Magnet Motor | Permanent Magnet Motor | |
| Function | Generate Electricity, Engine Starter | Generate Electricity, Drive Wheels | |
| Cooling System | Water-cooled | Air-cooled | |
| Maximum Output | kW | - | 60 |
| Maximum Torque | N*m | - | 207 |
Suspension
A MacPherson strut type independent suspension is used for the front.
A double wishbone type independent suspension is used for the rear.
Steering
The Electric Power Steering (EPS) system uses a power steering motor, a power steering torque sensor and a reduction mechanism that are built into the steering column assembly to generate assist torque, in order to assist the driver's steering effort.
| *A | LHD Models | *B | RHD Models |
Brake
| Item | Specification | ||
| Front Brake | Type | Ventilated Disc | |
| Rotor Size (D X T)*1 | mm (in.) | 277 X 26 (10.91 X 1.02)*2 296 X 28 (11.65 X 1.10)*3 |
|
| Rear Brake | Type | Solid Disc | |
| Rotor Size (D X T)*1 | mm (in.) | 270 X 10 (10.63 X 0.39) | |
| Brake Control System | ABS with EBD, Brake Assist, TRC, VSC+ and Hill-start Assist Control | ||
*1: Diameter X Thickness
*2: Models with 15-inch Aluminum Wheel
*3: Except Models with 15-inch Aluminum Wheel