Q4. With regard to NOx control requirements of Annex VI:
(a) Explain Tier I, Tier II and Tier III requirements.
(b) Briefly explain NOx technical code and NOx Technical file. What entries are required to make in onboard NOx Technical file.
(c) The control of diesel engine NOx emissions is achieved by what means?
(d) Explain with a simple sketch any two systems for NOx emission reduction.
Q3): Exhaust emission control is a major global issue and under serious consideration by world shipping. In this context, comment on the following: -
a) Tier 2 and 3 emission regulation on main engine (4)
b) Primary NOx reduction vis-a-vis secondary NOx reduction measures. (4)
c) SCR for NOx Emission Reduction. (4)
d) Scavenge Air Moisturizing & Exhaust Gas Recirculation for ME. (4)
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