PENGARUH VARIASI JUMLAH LUBANG PADA CATALYTIC CONVERTER TERHADAP EMISI GAS BUANG PADA MOTOR BAKAR 2 LANGKAH

Tri, Mardiyanto (2026) PENGARUH VARIASI JUMLAH LUBANG PADA CATALYTIC CONVERTER TERHADAP EMISI GAS BUANG PADA MOTOR BAKAR 2 LANGKAH. S-1 thesis, 021008 - UNIVERSITAS TRIDINANTI.

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Abstract

Exhaust emissions from two-stroke motorcycles remain an environmental concern because their combustion process tends to be incomplete, resulting in relatively high levels of carbon monoxide (CO), hydrocarbons (HC), and carbon dioxide (CO₂). This study aimed to analyze the effect of varying the number of holes in a catalytic converter on the reduction of exhaust emissions and to determine the most effective catalyst configuration. An experimental method with a quantitative approach was employed using a 2003 Yamaha RX-King motorcycle. The catalytic converters featured varying numbers of holes and were composed of a mixture of 60% gypsum and 40% activated carbon; emissions were measured using a gas analyzer under consistent testing conditions. The parameters observed included CO, HC, and CO₂ levels. The results indicate that varying the number of holes in the catalytic converter influenced the reduction of exhaust emissions. A higher number of holes increased the active surface area and enhanced the contact between exhaust gases and the catalyst material, thereby leading to lower emission levels. The optimal configuration was achieved with a catalytic converter featuring 128 holes, which yielded the best emission reduction results—specifically CO at 2.13%, CO₂ at 1.39%, and HC at 8,307 ppm during a 15-minute test—compared to the condition without a catalyst. Thus, varying the number of holes in a catalytic converter made from a gypsum and activated carbon mixture proved effective in improving exhaust emission control for two-stroke internal combustion engines. Keywords: catalytic converter, exhaust emissions, two-stroke motorcycle, carbon monoxide (CO), hydrocarbons (HC), carbon dioxide (CO₂), gypsum, activated carbon.

Item Type:	Thesis (S-1)
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > S1 Teknik Mesin
Depositing User:	Tn TRI MARDIYANTO
Date Deposited:	03 Aug 2026 03:19
Last Modified:	03 Aug 2026 06:21
URI:	http://repository.univ-tridinanti.ac.id/id/eprint/11041

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