Motor plus engine.
Double power for smart operation.

So that the engine always operates at maximum efficiency, the motor provides backup and recovers surplus energy.
By efficiently switching between the two power sources, the vehicle combines high fuel efficiency with a comfortable driving style.

  1. How It Works

  2. 1Startup and low-to mid-speed range
    Motor operation with outstanding energy efficiency and low-speed torqueIn normal cruising from vehicle start up to the mid-speed range, where engine efficiency is poor, the engine is shut off and the vehicle operates with the high-output motor alone (ⓐ).
  3. 2Normal cruising
    High fuel efficiency operation using the engine as the main power sourceEngine power is divided between two systems by a power split device. One of these systems drives the generator to produce electricity, which in turn drives the motor (ⓑ). The other directly powers the wheels (ⓒ). The relative power distribution between the two systems is controlled to ensure maximum efficiency.
  4. 3Rapid acceleration
    The two power sources provide the acceleration of a vehicle one class higherDuring rapid acceleration, electric power is also supplied by the battery. By adding the drive power from the high-output motor to the drive power from the engine, the vehicle delivers highly responsive and smooth dynamic performance for further enhanced acceleration performance (ⓐⓑⓒ).
  5. 4Deceleration and braking
    Deceleration energy is recovered by the batteryDuring deceleration and braking, the wheels drive the motor. This means that the high-output motor operates as a high-output generator to convert the vehicle braking energy into an additional source of electric power. This highly efficient process is known as regenerative braking, with the recovered electric power used to recharge the high-performance battery (ⓓ).
  6. 5Battery recharging
    Constant battery charge level is maintainedWhen the battery charge level is low, starting the engine switches the generator on, and recharging begins. This system operates to maintain a constant charge level (ⓔ).
  7. 6Vehicle stationary
    All power systems are shut downThe engine switches off automatically.

  • Maximum thermal efficiency, class-topping new engine

    As a result of improved combustion and reduced losses, the engine offers maximum thermal efficiency of 40%. This dramatically boosts fuel efficiency.
    *As of December 2015, based on TMC survey of gasoline-powered passenger vehicles (excluding plug-in hybrid vehicles).

  • New motor designed for compact dimensions, light weight and high output

    The development of a segmented-coil distributor coil offers compact dimensions, a weight reduction of over 20%, and reduced losses.

Toyota will improve and increase the product diversification through the evolution of HVs and evolution of technology.