Exam Question
(a) What do you understand by NOx and SOx emissions? (6)
(b) Name the source from where they originate and how? (6)
(c) Briefly discuss, as to how these emissions are dealt with? (8)
Class 4 (4th Engineer)
SSEP
📅 Jun 2023
Reference Answer
### (a) Understanding of NOx and SOx Emissions
**1. Oxides of Nitrogen (NOx):**
NOx is a collective term for a group of highly reactive, gaseous nitrogen compounds formed during high-temperature combustion. The primary components relevant to marine diesel engines are:
* **Nitric Oxide (NO):** A colorless, odorless gas that constitutes the majority (~95%) of NOx formed within the engine cylinder.
**1. Oxides of Nitrogen (NOx):**
NOx is a collective term for a group of highly reactive, gaseous nitrogen compounds formed during high-temperature combustion. The primary components relevant to marine diesel engines are:
* **Nitric Oxide (NO):** A colorless, odorless gas that constitutes the majority (~95%) of NOx formed within the engine cylinder.
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