AIGF Exit Exam • Set 6 Question 27 of 30
Which type of engine does not need exhaust gas treatment system
✓
Direct Answer
Option C: XDF engines
Low-pressure dual-fuel Otto cycle engines meet IMO Tier III NOx limits in gas mode without needing Selective Catalytic Reduction (SCR) or Exhaust Gas Recirculation (EGR).
All Options
A
GDF engines
B
ZDF engines
C
XDF engines
(Correct Answer)
D
YDF engines
Detailed Explanation & Context
Low-pressure dual-fuel Otto cycle engines meet IMO Tier III NOx limits in gas mode without needing Selective Catalytic Reduction (SCR) or Exhaust Gas Recirculation (EGR).
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Ships subject to the IGF Code (AIGF).
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