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MG1, MG2, and eCVT
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Toyota’s Hybrid Synergy Drive (HSD) system uses three key components for its transmission:

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  1. MG1 (Motor Generator 1) – Acts as a starter motor for the engine and a generator to charge the battery. It also controls engine speed and enables power split between the engine and MG2.
     

  2. MG2 (Motor Generator 2) – The primary electric motor that drives the wheels. It also works as a generator during regenerative braking to recover energy and charge the battery.
     

  3. eCVT (Electronically Controlled Continuously Variable Transmission) – A power-splitting mechanism that replaces a traditional transmission. It uses a planetary gear set to seamlessly blend power from MG1, MG2, and the engine, optimizing efficiency and performance.
     

This system ensures smooth acceleration, fuel efficiency, and the ability to drive in electric-only mode at low speeds.

Disclaimer

The information provided on this blog is based on the experiences and knowledge of its creators regarding Toyota and Lexus hybrid vehicles. While the content aims to offer helpful insights and guidance, it should not be considered professional advice or a guideline for performing any DIY or professional repairs and maintenance.

This blog and its creators are not responsible for any decisions or actions taken based on the information provided. Hybrid vehicles involve complex systems, including high-voltage components, and attempting DIY repairs or maintenance without proper expertise can be dangerous. Readers are advised to exercise caution, follow safety protocols, and consult certified professionals when necessary.

Additionally, the creators of this blog are continuously learning and improving their understanding of hybrid cars. As new information becomes available, efforts will be made to update and correct any inaccuracies. However, the content is not definitive, and readers are encouraged to verify facts, conduct independent research, and seek expert advice before making any decisions.

By using this site, users acknowledge that any actions taken based on its content are at their own risk. This blog serves as an informational resource, but ultimate responsibility lies with the individual.

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