Hybrid Vehicles
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Hybrid Vehicle Principles
Start-up and low-to mid-speed range
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Motor operation with outstanding energy efficiency and low-speed torque In 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. |
Normal Cruising
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High fuel efficiency operation using the engine as the main power source Engine 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. |
Normal Cruising / Recharge
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Constant battery charge level is maintained When 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. |
Acceleration
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The two power sources provide the acceleration of a vehicle one class higher During 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. |
Deceleration and Braking
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Deceleration energy is recovered by the battery During 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. |
Stop
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All power systems are shut down The engine switches off automatically. |
