Is Higher Thermal Efficiency of an Engine Always Better?

[EdwardRose]

Higher thermal efficiency of an engine is indeed better. Here are specific details about engine thermal efficiency: 1. Engine thermal efficiency refers to the ratio of heat converted into mechanical work to the total heat consumed in the engine. 2. The higher the engine's thermal efficiency, the better its fuel economy will be. 3. Higher engine thermal efficiency results in stronger vehicle power and lower fuel consumption. 4. If an engine has high thermal efficiency but poor matching with the transmission, the vehicle's drivetrain efficiency loss will be relatively high. Even with high engine thermal efficiency, the vehicle's fuel consumption won't decrease.