ABE TUTORIALS

AREA 1 PROBLEM 36: ENGINE DISPLACEMENT CALCULATION

SUPPOSE A 4-CYLINDER ENGINE HAS A BORE OF 3.5 IN. AND A STROKE OF 4.0 IN. WHAT IS THE ENGINE DISPLACEMENT?

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a. 154 in³

b. 175 in³

c. 225 in³

d. none

Correct Answer: A

Detailed Solution:

Engine displacement is the total volume swept by all the pistons inside the cylinders.

Displacement = (π / 4) × Bore² × Stroke × Number of Cylinders

Step 1: Identify the Given Values

• Bore (D) = 3.5 in
• Stroke (L) = 4.0 in
• Number of Cylinders (n) = 4

Step 2: Solve for Total Displacement

Displacement = (3.1416 / 4) × (3.5)² × 4.0 × 4
Displacement = 0.7854 × 12.25 × 4.0 × 4
Displacement = 153.938 in³

Result: a. 154 in³ (Rounded)