Why is the engine speed so high?

[MadelineLynn]

Reasons for high engine speed: When the throttle opening is larger, the speed will increase. The gasoline engine throttle does not control the fuel injection amount, but rather the throttle opening. A smaller opening allows less air-fuel mixture to enter the cylinder, resulting in lower engine power output, and vice versa. The more air-fuel mixture enters the cylinder, the greater the combustion force, which increases the force pushing the piston, making the piston move faster and thus increasing the engine speed. An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, electric motors, etc. Internal combustion engines typically convert chemical energy into mechanical energy. Engines can refer to either the power generation device or the entire machine including the power unit.