How to Improve Thermal Efficiency?
2 Answers
By adopting CVVD technology, it is possible to increase the maximum thermal efficiency of these engines to over 50%. The following are the functions of CVVD: 1. Reduce resistance: CVVD technology can extend the opening time of the intake valve to the middle and late stages of the compression stroke, thereby improving fuel efficiency by reducing resistance caused by compression. On the other hand, when the engine output is high, such as when the car is driving at high speed, the intake valve will remain closed at the beginning of the compression stroke to maximize the amount of air required for detonation. 2. Improve performance: Increase the torque of the engine and enhance the acceleration performance of the vehicle.
Having driven many cars myself, I've found that the key to improving thermal efficiency lies in achieving more complete combustion in the engine and reducing heat waste. Adjusting driving habits can help, such as avoiding sudden acceleration and maintaining steady speeds, which allows for more complete fuel combustion and better conversion of heat into power. Additionally, proper engine maintenance is crucial—regular oil changes and carbon deposit cleaning can reduce internal friction and heat loss. New technologies like direct fuel injection and variable valve timing are also effective, as they optimize the air-fuel mixture and combustion process. Remember, even simple measures like checking tire pressure and reducing vehicle weight can indirectly enhance overall efficiency.
