Allied & ICAR Exam Bank • ALLIED_1150 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: Engine Firing Order

Question Statement:

The most standard firing order for a four-cylinder inline agricultural tractor diesel engine is:

Options:

  • (A) 1 - 3 - 4 - 2
  • (B) 1 - 2 - 3 - 4
  • (C) 1 - 4 - 3 - 2
  • (D) 4 - 3 - 2 - 1

Answer Key:

A

Step-by-Step Solution & Explanation

1-3-4-2 (or alternatively 1-2-4-3) provides optimal dynamic balance and uniform torque pulses spaced $180^\circ$ apart across the crankshaft.
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