What are the differences between Toyota's third-generation and fourth-generation hybrid systems?
1 Answers
Higher thermal efficiency, transmission system, suspension, etc. Here are the specific details: 1. Thermal efficiency: The third generation has a compression ratio of 12.5, while the fourth generation has 14, making it more fuel-efficient and more powerful. 2. Transmission system: The fourth generation adds gears at low speeds, providing more direct transmission and a quicker start feel. 3. Suspension: The current model uses the old RAV4 chassis, while the next generation is expected to use TNGA. You can test drive the UX; its chassis performance and noise control are significantly better than the current NX. 4. Four-axis structure: Consists of a torque limiter, one-way clutch, input shaft, planetary gear mechanism, motor, reduction device, and differential device. Among these, the planetary gear mechanism acts as a power split device, determining whether the engine power is supplied to motor MG1 or used as vehicle driving force. Motor MG2 and its reduction device adopt a parallel-axis layout.