TY  - JOUR
T1  - Experimental Investigation of the Effect of Air Filter Contamination on Exhaust Emissions in a Spark-Ignition Internal Combustion Engine
AU  - Küçüksarıyıldız, Hanifi
PY  - 2026
DA  - May
Y2  - 2026
DO  - 10.29137/ijerad.1886355
JF  - International Journal of Engineering Research and Development
JO  - IJERAD
PB  - Kirikkale University
WT  - DergiPark
SN  - 1308-5506
SP  - 16
EP  - 27
VL  - 18
IS  - 3
LA  - en
AB  - 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.
KW  - Spark ignition engine
KW  - air filter contamination
KW  - exhaust emissions
KW  - environmental impact.
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UR  - https://doi.org/10.29137/ijerad.1886355
L1  - https://dergipark.org.tr/en/download/article-file/5705763
ER  -