What Happens When a Car's RPM Is Too High?

[ElizabethRose]

Frequently running a car engine at excessively high RPMs can easily lead to engine burnout. Principle: When the throttle opening is larger, the RPM increases. The car's throttle does not control the fuel injection volume; instead, it controls the throttle opening. A smaller opening means less air-fuel mixture enters the cylinder, resulting in lower engine power output, and vice versa. Overall benefits of lower RPMs: Fuel efficiency, reduced noise, and longer lifespan (less engine friction). Engine: The engine is the power source of a car. Most car engines are thermal power devices, commonly referred to as heat engines. Heat engines convert the thermal energy generated by fuel combustion into mechanical energy through changes in the working fluid's state.