Experimental Investigation of the Effect of Air Filter Contamination on Exhaust Emissions in a Spark-Ignition Internal Combustion Engine
Abstract
In this study, the effects of air filter contamination levels on exhaust emissions in a spark-ignition internal combustion engine were experimentally investigated. The experiments were conducted under three different air filter conditions: clean, moderately dirty, and dirty, and at engine speeds of approximately 1000, 2000, 3000, and 4000 min-1. As part of the experimental measurements, CO, HC, CO2, and O2 emissions were measured using an exhaust gas analyzer.
Experimental results have shown that air filter contamination has a significant effect on emissions, particularly at low engine speeds. Under dirty air filter conditions, CO and HC emissions were found to increase by approximately 10-15% and 20-30%, respectively, at low and medium speeds. As engine speed increased, CO emissions decreased by approximately 45-60% and HC emissions decreased by approximately 40-50%, depending on the filter condition. CO2 emissions were found to increase with speed and reached values approximately 10% higher at 4000 min-1 under clean air filter conditions. In contrast, O2 emissions were found to decrease with increasing engine speed under all filter conditions. This demonstrates that air filter maintenance is a parameter that should be considered in terms of emission control and reducing environmental impacts under real-world operating conditions.
Keywords
Spark ignition engine, air filter contamination, exhaust emissions, environmental impact.
Ethical Statement
This article does not contain any studies with human participants performed by any of the authors.
Thanks
The author would like to thank Karaman Maboto Renault Authorized Service Center and its staff for the technical support provided during the experimental studies.
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