Question

The reason for lower NOx from the engine using raw biogas fuel is

Answer 1

Answer:

As the natural gas energy proportion (NGP) increased, brake power decreased and nitrogen oxide (NOx) emissions decreased because of low combustion efficiency and a lower temperature in the cylinder.

Answer 2

The reason for lower NOx from the engine using raw biogas fuel is low temperature and low combustion in the cylinder.

Explanation:

• The oxides of nitrogen are present in diesel and biofuel.
• The energy consumption of natural gas has increased over the years but due to the efficiency in the engine, the brake power has decreased which in result has decreased the emission of the nitrogen oxide.
• The other reason is low combustion and low temperature in the cylinder which has decreased the NOx emission.