What are the main components of a four-stroke engine?

The main components of a four-stroke engine include the piston, crankshaft, camshaft, valves, and connecting rod. Each of these parts plays a vital role in the engine's operation.

The piston is crucial as it moves up and down within the cylinder, converting the energy from combustion into mechanical work. The crankshaft translates the linear motion of the piston into rotational motion, which ultimately powers the vehicle. The camshaft operates the engine's valves, which control the intake of air and fuel and the exhaust of combustion gases at the appropriate times during the four-stroke cycle: intake, compression, power, and exhaust.

The connecting rod links the piston to the crankshaft, facilitating the transfer of motion. This configuration is essential for the engine to function efficiently and effectively.

Other options listed include components that are not part of the four-stroke engine's primary structure or function. For instance, a transmission is utilized for changing gear ratios and isn't involved in the fundamental operation of the combustion cycle. Similarly, items like the alternator, battery, starter, and fuel pump are essential for the vehicle's electrical and fuel systems, but they do not directly pertain to the internal mechanics of a four-stroke engine. Lastly, components such as the radiator