Claim Missing Document
Check
Articles

Analysis of the Effects of Spark Plug Type and Electrode Gap on Exhaust Emission Performance: A Case Study of the Toyota Limo Arsy Sulaiman; Risal Abu; Mukhnizar Mukhnizar
The Future of Education Journal Vol 5 No 2 (2026)
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v5i2.1991

Abstract

The transportation sector is the largest contributor to air pollution in urban areas due to the extensive use of fossil fuels. This study aims to analyze the effect of spark plug types and variations in electrode gap distance on the exhaust emission levels of Carbon Monoxide (CO) and Hydrocarbons (HC) in a 2008 Toyota Limo. The testing parameters utilized three types of spark plugs nickel, platinum, and iridium with variations in gap distances: standard (0.9 mm–1.1 mm), narrow (0.5 mm), and wide (1.5 mm) across various engine speeds (RPM). ​The research method involved direct testing using a Gas Analyzer at the Motor Vehicle Testing Technical Service Unit (UPT-PKB) in Padang Pariaman Regency. The collected data, comprising CO and HC emission results, were analyzed to determine the combustion efficiency within the combustion chamber. ​The results indicate that the spark plug gap distance has a more significant impact on emissions than the spark plug material itself. Using the standard gap distance consistently yielded the best emission results across all spark plug types. Overall, the iridium spark plug with a 1.1 mm standard gap produced the lowest emission levels, specifically 0.36% for CO and 55 ppm for HC at 2000 RPM. This proves that premium electrode materials produce a more focused and powerful spark, leading to more complete and environmentally friendly combustion, provided they are supported by the manufacturer's recommended gap distance
Performance Evaluation of a Centrifugal Pump at the Gunung Pangilun Drinking Water Treatment Installation, Padang Regional Public Water Utility Company Rama Pranata; Risal Abu; Mukhnizar Mukhnizar
The Future of Education Journal Vol 5 No 2 (2026)
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v5i2.2111

Abstract

The availability of clean water is a fundamental need that must be continuously ensured. The Regional Drinking Water Company (Perumda) of Padang City utilizes centrifugal pumps to distribute water from the intake to the reservoir. However, decreased pump performance can lead to an imbalance between water supply capacity and demand. This study aims to analyze the performance of centrifugal pumps at the Gunung Pangilun Water Treatment Unit, particularly in terms of flow capacity, efficiency, and power consumption. The results show that the combined actual discharge of two pumps was 2250 m³/h, which is 24.24% lower than the specified capacity of 2970 m³/h. The average head was 42 meters with a discharge pressure of 4.2 bar. The pump efficiency decreased compared to the design condition due to flow losses and equipment aging factors. It can be concluded that the pump performance is still within an acceptable range but has experienced a decline in capacity and efficiency. Therefore, regular maintenance and system evaluation are required to improve operational performance and energy efficiency.
INSTALLATION OF PUBLIC FACILITIES LIGHTING IN PASA LIMAU PARIT MALINTANG Muknizar, Muknizar; mallisza, Danyl Mallisza; Slamet Riyadi; Risal Abu; Dewirman Prima Putra; Ahmad Fikri; Niko Zainuddin Muchtar; Muhammad Alimuddin Hafidz; Raden Roro Anggun Tutur Winasis; Raka Putra Hanafi; Asrul, Asrul; Putra Hajril Fajri; Refnaldi Pramana
Journal of Community Service Vol 8 No 1 (2026): JCS, June 2026
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jcs.v8i1.444

Abstract

Korong Pasa Limau is one of the villages in Nagari Parit Malintang, where the village has a surau (prayer hall) that has just been built and is located among the Guci community. The problem faced by the residents of Korong Pasa Limau is the safety of residents who want to pray at the newly built surau, named Surau Sungsang. Before Surau Sungsang was built by the residents of Korong Pasa Limau, the korong already had a surau located downhill, so residents who wanted to pray had to walk down and were at risk of falling or slipping on the descending path leading to that surau. Student Real Work Lecture (KKN-PPM) community service activities are carried out to solve problems that occur in the environment. One of them is by providing public facilities in the form of lighting at Surau Sungsang for residents to be able to start worshiping there. Students from Group 22 of KKN-PPM UNES 2024 installed lighting for Surau Sungsang using an electric power source from PLN, with a total of 8 light installation points at Surau Sungsang, Korong Pasa Limau.