What is the correct order of operations for a 4-stroke motor?

The correct order of operations for a 4-stroke motor is intake, compression, power, and exhaust. This cycle is fundamental to how internal combustion engines operate.

During the intake stroke, the engine draws in an air-fuel mixture through the intake valve as the piston moves down. This prepares the cylinder for combustion.

Next is the compression stroke, where the piston moves back up, compressing the air-fuel mixture to increase its temperature and pressure, which is critical for a more efficient combustion process.

The power stroke follows, initiated by the ignition of the compressed mixture. This explosion forces the piston down, creating the power needed to turn the crankshaft and ultimately drive the vehicle.

Finally, in the exhaust stroke, the exhaust valve opens, and the piston moves back up, expelling the spent gases from the combustion out of the cylinder.

Each of these stages is essential for the efficient operation of the engine, ensuring proper fuel usage, power generation, and emissions control. Understanding this sequence is vital for anyone studying engine mechanics, as it highlights how the different strokes work together in the cycle of a 4-stroke motor.