Toyota Hybrid System: Toyota Synergy Drive
The Toyota Hybrid Synergy Drive is a hybrid vehicle powertrain technology developed by Toyota. It is used in several Toyota hybrid models. The system combines the use of a gasoline engine and an electric motor to provide improved fuel efficiency and reduced emissions.
The basic components of the Toyota Hybrid Synergy Drive system include:
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Gasoline Engine: A traditional internal combustion engine is used as the primary power source. It is designed to be fuel-efficient and works in conjunction with the electric motor to power the vehicle.
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Electric Motor/Generator: An electric motor is integrated into the hybrid system to assist the gasoline engine during acceleration and provide additional power when needed. The motor also acts as a generator during deceleration and braking, converting kinetic energy into electricity to charge the hybrid battery.
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Hybrid Battery: A high-voltage battery pack stores electrical energy generated by the gasoline engine and regenerative braking. The battery powers the electric motor and provides energy for driving in electric-only mode at low speeds or during certain conditions.
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Power Split Device (PSD): The power split device is a special planetary gear set that allows the engine and electric motor to work together efficiently. It divides and controls the power flow between the gasoline engine, electric motor, and wheels according to driving conditions.
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Power Control Unit (PCU): The PCU manages the flow of electrical energy between the battery, electric motor, and generator. It also controls the charging of the hybrid battery and converts the DC voltage from the battery into AC voltage for the electric motor.
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Regenerative Braking: The hybrid system employs regenerative braking, where the electric motor acts as a generator to convert kinetic energy into electrical energy during deceleration or braking. This energy is stored in the hybrid battery for later use.