What are the advantages and disadvantages of a continuously variable transmission?

[DeEmily]

Introduction to the advantages and disadvantages of a continuously variable transmission is as follows: 1. Advantages: Good fuel economy. CVT can achieve continuously variable transmission over a wide range, obtaining the best match between the transmission system and engine conditions. By relying on the transmission's continuously variable speed adjustment to adapt to various vehicle speeds, the engine can operate under optimal conditions for extended periods, thereby improving combustion efficiency and fuel economy. 2. Disadvantages: Limited maximum torque capacity and slightly lower stability. CVT transmissions use chains (or belts, etc.) for power transmission, so when handling high torque, the requirements for the transmission chain are quite stringent (no breaking, slipping, etc.). Therefore, early CVT transmissions could not be installed in high-power vehicles. Precautions for using the transmission are as follows: 1. Do not shift into P gear before the vehicle comes to a complete stop, as this may cause permanent damage to the P gear parking pawl or internal mechanism. 2. Do not coast in neutral. Due to the different lubrication methods of automatic transmissions, coasting in neutral with low engine speed causes the internal oil pump speed to not match the vehicle's speed state, failing to meet the operational requirements. This can lead to excessively high transmission oil temperature and, in severe cases, a series of issues such as vehicle immobility and shortened transmission lifespan. 3. CVT transmission vehicles are prohibited from unauthorized modifications to CNG (compressed natural gas), LPG (liquefied petroleum gas), and other fuels. Since the operation of a CVT transmission is highly dependent on the engine's adaptation, unauthorized fuel modifications may result in reduced engine torque, instability, and other effects, preventing the CVT transmission from achieving optimal working conditions.