Question

Regeneration does not consists of combusting the particulates in the excess oxygen contained in the exhaust of the lean operating CI engine.

(a) True

(b) False

The question was posed to me by my college director while I was bunking the class.

The doubt is from C.I. Engines topic in section Engine Emissions and their Control of IC Engine

Answer 1

The correct answer is:

(b) False

Regeneration does indeed involve combusting the particulates (soot) in the excess oxygen contained in the exhaust of a lean operating CI engine. This process is essential for cleaning diesel particulate filters (DPF), where accumulated soot is burned off at high temperatures, allowing the filter to continue trapping particulates.