How many strokes are required to complete a four-stroke engine cycle?

How many strokes are required to complete a four-stroke engine cycle?

• A. 2
• B. 4
• C. 6
• D. 8

Answer: (B)

In a four-stroke engine cycle, there are four distinct piston movements: intake, compression, power, and exhaust. These four strokes complete one cycle, and it takes two full crankshaft revolutions for those four strokes to occur. So, the number of strokes required is four. Two strokes would only cover half the cycle, while six or eight strokes describe nonstandard or different engine designs beyond the typical four-stroke cycle.

In a four-stroke engine cycle, there are four distinct piston movements: intake, compression, power, and exhaust. These four strokes complete one cycle, and it takes two full crankshaft revolutions for those four strokes to occur. So, the number of strokes required is four. Two strokes would only cover half the cycle, while six or eight strokes describe nonstandard or different engine designs beyond the typical four-stroke cycle.