1. Power Source: Whether in automobiles, aircraft, or ships, the engine serves as the indispensable "heart" of the vehicle, providing the necessary propulsive force.
2. Energy Conversion: By burning gasoline or diesel, the engine efficiently converts the fuel's chemical energy into mechanical energy, thereby driving the vehicle smoothly.
3. Speed Control: Vehicle speed can be precisely regulated by adjusting the engine's throttle opening or changing transmission gears.
4. Steering Assistance: Some engines also play a role in controlling the vehicle's steering system. In motorcycles and race cars, for instance, the engine provides crucial steering assistance.
