Factors Affecting Speed:
* Power-to-weight ratio: Rotary engines are known for their high power-to-weight ratio, making them particularly suitable for applications where weight is a concern (like racing).
* RPM: Rotary engines can rev much higher than piston engines, reaching upwards of 10,000 RPM. This high RPM contributes to their power output.
* Torque: Piston engines generally produce more torque at lower RPMs, making them more suitable for pulling heavy loads.
* Specific application: The best engine type depends on the specific application. For example, a piston engine may be better for a truck, while a rotary engine might be better for a sports car.
In summary:
* Rotary engines:
* Pros: High power-to-weight ratio, high RPM, quick acceleration.
* Cons: Less torque at low RPM, higher fuel consumption, more complex design.
* Piston engines:
* Pros: More torque at low RPM, generally more fuel-efficient, simpler design.
* Cons: Heavier, lower RPM limit.
It's more accurate to say that rotary engines are generally faster in terms of acceleration due to their high power-to-weight ratio and high RPM capability, but piston engines can be more powerful overall depending on the application.
For example:
* A high-revving, lightweight rotary engine could be significantly faster than a heavy-duty piston engine in a sports car.
* A large-displacement, high-torque piston engine could be more powerful than a rotary engine in a truck or SUV.
Ultimately, the "faster" engine depends on the specific application and the desired performance characteristics.
