Question

A ____________ reduction of cold-start HC has been achieved.

(a) 20%

(b) 30%

(c) 35%

(d) 40%

I had been asked this question during an internship interview.

This intriguing question comes from Reducing Emissions by Chemical Methods topic in division Engine Emissions and their Control of IC Engine

Answer 1

The correct answer is:

(d) 40%

A 40% reduction of cold-start hydrocarbons (HC) has been achieved through various advancements in engine technologies, such as improved catalytic converter designs, better fuel management systems, and optimized engine control strategies that reduce the emissions during the cold-start phase when the engine is not yet at optimal operating temperature.