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All Journal Jurnal Elementer (Elektro dan Mesin Terapan) Metaphor
Widyantoro, Arif
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Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mechanical Engineering

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Experimental Study of Performance and Emissions of a 4-Stroke Engine with a Capacity of 110cc Muhammad, Rouf; Pramanda, Wibi; Widyantoro, Arif; Joko Sumbogo, Yuliarto; Jiwo Satrio, Hutomo; Safi'i, Muhamad; Ramadhan Nur, Hamid; Ibrahim Soumi, Andi
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 11 No 1 (2025): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v11i1.6643

Abstract

In addition to adding ferrite beads to the ignition coil, this study attempts to examine the effects of different spark plugs and ignition coils. Ferrite beads are employed to mitigate electrical noise and enhance electrical efficiency. This research facilitates the examination of engine performance and exhaust emissions, thereby offering insight into the combustion process within the combustion chamber. This study used a 4-stroke Otto engine with a displacement of 110 cc, powered by RON 92 gasoline. We utilize three types of spark plugs: Denso U22FS-U, NGK 14 mm, and Iridium IU27. Two varieties of ignition coils are employed: PCX 150 and COL9001, supplemented by ferrite beads. Dynotes are utilized to assess engine performance, while gas analyzers are employed to evaluate exhaust pollutants. The criteria examined for engine performance include torque and power, while exhaust emission parameters consist of CO, CO2, O2, and HC. The findings indicate that the NGK 14-mm spark plug, when paired with a COL9001 ignition coil and supplemented with a ferrite bead, achieves a peak torque of 7.67 Nm at 6514.42 rpm and a maximum power output of 5.73 kW at 72813.93 rpm. This setup yields minimal emissions and favorable fuel consumption when it is implemented. This study's findings offer significant insights and references for tactics including spark plugs, ignition coils, and ferrite beads.
The Use of Matching Game for Teaching Conditional Sentence in Eleventh Graders of SMK Takhassus Al-Qur’an Wonosobo Arini, Khusna; Widyantoro, Arif
Metaphor Vol 7 No 2 (2025): Literary Works Analysis, Linguistics Analysis, English Education
Publisher : Faculty of Language and Literature, Universitas Sains Al-Qur'an

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Abstract

The aim of this research was to know whether Matching Game gives the impact or not in teaching conditional sentence at SMK Takhassus Al-Qur’an Wonosobo. The method used was classroom action research (CAR) by using qualitative and quantitative approach. The researcher used pre-cycle, cycle I and cycle II to find the data. T-test was used to analyze it. Having analyzed the data, the researcher revealed that the student’s understanding in cycle II was higher than pre-cycle and cycle I. There was positive impact in teaching conditional sentence using Matching Game at SMK Takhassus Al-Qur’an Wonosobo. The T-test result was 10.8 and T-table in degree of freedom 33 at the significant 0.05 was 2.034. The hypothesis was accepted because T-test was higher than T-table. It means that Matching Game is effective for teaching conditional sentence.
Co-Authors Arini, Khusna Hutomo Jiwo Satrio Ibrahim Soumi, Andi Joko Sumbogo, Yuliarto Muhammad, Rouf RAMADHAN NUR, HAMID Safi'i, Muhamad Wibi Pramanda