In the four-step compression cycle, which step occurs after Intake?

In the four-step compression cycle, which step occurs after Intake?

• A. Compression
• B. Expansion
• C. Exhaust
• D. Intake

Answer: (A)

Understanding the order of stages in a four-step compression cycle is essential. After the intake stroke, the system must compress the charge to raise its pressure and temperature. This preparation is what allows the next stage, where that high-pressure gas expands to do work on the piston. If you skipped compression and jumped straight to expansion, there wouldn’t be enough pressure to drive the expansion effectively. So the step that comes immediately after intake is compression, setting up the energy transfer that follows in the cycle.

Understanding the order of stages in a four-step compression cycle is essential. After the intake stroke, the system must compress the charge to raise its pressure and temperature. This preparation is what allows the next stage, where that high-pressure gas expands to do work on the piston. If you skipped compression and jumped straight to expansion, there wouldn’t be enough pressure to drive the expansion effectively. So the step that comes immediately after intake is compression, setting up the energy transfer that follows in the cycle.