Feb. 26, 2018
2.0-liter Toyota Hybrid System (THS II)
Toyota has developed a new hybrid system for 2.0-liter engines, which applies the same size-reducing, weight-reducing, and loss-reducing technologies used in the fourth-generation Prius. The new system realizes improved driving performance while retaining superior fuel efficiency. When accelerating, the hybrid system reduces engine rotations while drawing increased electric power from the battery, thereby delivering a linear and lengthened sense of acceleration.
New Power Control Unit
The new PCU is 20% smaller, and 10% lighter than the conventional 1.8-liter model, which allows it to be placed directly above the transaxle.
The motor features a new rolling-coil structure with fewer wires, and also uses a newly developed magnetic steel. A new parallel reduction gear format helps to reduce the loss in the transaxle.
Loss reduced by more than 25%
|Transaxle||2-motor mechanical power split type|
|Maximum motor output||80kw (109PS)|
|Maximum motor torque||202N･m (20.6kgf･m)|
New Nickel-metal Hydride Battery
Reduction in size dedicated to 2.0-liter by reviewing the structure of the battery pack and making the cooling system compact
|Current 1.8-liter||New 2.0-liter|
|Numbers of cells||168||180|