Study on correlation between particulate matter emissions and exhaust smoke levels in CI engines

Abstract

Particulate Matter is one of the harmful exhaust emissions that effect both environment and human health. Various universities and research centers often estimate the level of Particulate Matter through the smoke levels. For more than 3 decades, researchers are trying to validate the existing correlation between Particulate Matter emissions and exhaust smoke levels. While the measuring principles of both pollutants follow similar principles, the cost and operation associated with them are widely different. Instruments that measure Particulate emissions that are released from the engine exhaust are very valuable because of their high cost, unavailability of skilled technicians and maintenance of equipment. While some proposed that dark substance from the exhaust and on smoke filter is because of the presence of the primary component of the particulate matter, soot, others proved it with results of their experiments. In this article, we will study the research results that prove the existing correlation between the both. It is observed that the particulate matter and smoke opacity follow a linear relationship.