What causes high engine RPM but no increase in vehicle speed?

[OIsabella]

When the engine RPM is high but the vehicle speed does not increase, it must be an issue with the clutch or transmission, as the power generated by the engine is not being transmitted to the wheels. Engine characteristics: The engine's valve drive mechanism adopts a hydraulic support roller rocker arm structure. Compared to the commonly used hydraulic tappet valve drive mechanism in general gasoline engines, this novel valve drive mechanism has the advantage of relatively low friction torque, thus requiring less driving force. This effectively reduces engine power consumption and lowers fuel consumption. Increasing engine power: Using special materials and specially processed plastic intake manifolds to replace traditional metal intake manifolds not only achieves lightweight effects but also effectively reduces intake manifold wall resistance, improves intake efficiency, and increases engine power.