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All Journal Jurnal Pendidikan Teknik Mesin Sainteknol : Jurnal Sains dan Teknologi Automotive Science and Education Journal Journal of Mechanical Engineering Learning
Winarno Dwi Rahardjo, Winarno Dwi
Pendidikan Teknik Mesin, Universitas Negeri Semarang
Automotive Engineering Computer Science & IT Education Mechanical Engineering

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PENERAPAN PENERAPAN PERAGA MESIN DIESEL UNTUK MENINGKATKAN PEMAHAMAN KOMPONEN MESIN DIESEL PADA PRAKTIK MOTOR BENSIN DAN DIESEL Susanto, Edi; Rahardjo, Winarno Dwi
Journal of Mechanical Engineering Learning Vol 9 No 1 (2020): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

The purpose of this study is to determine the feasibility of a diesel engine display and findout how much student learning outcomes (understanding) improve about diesel enginecomponents by using the visual aid. Based on the results of the product feasibility test itis obtained a percentage of 82% for media experts with a very decent category and 78%for material experts with a feasible category. Based on the results of the study, an increasein the average of pretest-posttest value is 23 or 40%, the t-test shows the value of t count= 14.89> t table = 2.02. The increase of student learning outcomes indicates an averageof the N-Gain test = 0.57 with the criteria of moderate improvement.Keywords: Learning outcomes, visuals aid, understanding, diesel engine
PENGARUH PENGGUNAAN ECU STANDAR DAN ECU JUKEN DENGAN VARIASI INJEKTOR TERHADAP TORSI DAN DAYA SEPEDA MOTOR YAMAHA V-IXION Afwan, Muhammad Aulia; Rahardjo, Winarno Dwi
Automotive Science and Education Journal Vol 9 No 1 (2020): Automotive Science and Education Journal
Publisher : Automotive Science and Education Journal

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Abstract

The resulting engine performance motorcycle injection less than the maximum. This is due to inadequate intake of fuel sprayed by the injector and injection duration short. This study aims to determine the effect of the use of a standard ECU and ECU juken with injector variation of the torque and power of motorcycle Yamaha V-Ixion. The study used a motorcycle Yamaha V-Ixion. The method used in this research is true experimental design and data analysis descriptive statistics. The results showed that the use of standard injector standard ECU obtain maximum torque of 13.2 Nm and 10.33 kW maximum power, while the injector racing produces the highest torque Nm 13.32 and 10.40 kW power. On the use of the ECU juken 14.06 Nm torque and power 11.02 kW while ECU juken racing injector of torque 14.31 Nm and 11.22 kW power. Based on test results, it can be concluded that the use of the ECU juken racing injector effect in increasing the torque and power of motorcycle injection
PENGARUH CAMPURAN BIOETANOL DESTILASI MOLASE TEBU DENGAN PERTALITE TERHADAP PERFORMA, KONSUMSI BAHAN BAKAR, DAN EMISI GAS BUANG MOTOR BENSIN 125cc Andhikatama, Alpha Bagas; Rahardjo, Winarno Dwi
Automotive Science and Education Journal Vol 9 No 2 (2020): Automotive Science and Education Journal
Publisher : Automotive Science and Education Journal

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Abstract

The purpose of this research is to determine the value of torque, power, fuel consumption and exhaustemissions on a 125cc 4-stroke gasoline engine by providing treatment for the fuel used. The treatmentused is in the form of mixing bioethanol fuel with alcohol content of 99.63% with pertalite 90 fuel on amixture variation of 0%, 5%, 10%, 15%, 20%, 25%, 30%. The gasoline motor used in this study was theHonda Vario 125 Esp which was tested in the engine speed range of 3000, 3500, 4000, 4500, 5000, 5500,6000, 6500, 7000, 7500, and 8000 rpm using the Dynamometer, Exausht Gas Analzer and burette Thereare 2 highest torque values in the tested fuel namely 25% bioethanol fuel mixture with 75% pertalite witha torque value of 22.56 Nm at 4000 rpm and 30% bioethanol fuel mixture with 70% pertalite with a torquevalue of 22.56 Nm at 3500 rpm, the highest power value in the tested fuel is 30% bioethanol fuel mixturewith 70% pertalite with power value of 9.62 kW at 4500 rpm, the lowest fuel consumption value in 30%bioethanol fuel mixture with 70% pertalite % with FC value of 0.134 kg / h, while the lowest Hydrocarbon(HC) value in the tested fuel is 30% bioethanol fuel mixture with 70% pertalite achieving i 743.67 ppm.The addition of bioethanol is not accompanied by a decrease in Carbon Monoxide (CO) gas levels. Thereis the lowest Carbon Monoxide (CO) value in the tested fuel, that is pure pertalite fuel itself, which is1.14% vol.Keywords: Bioethanol, Pertalite, Torque, Power, Fuel Consumption, Flue Gas Emissions Dynamometer, Exhaust Gas Analyzer, Carbon Monoxide, Hydrocarbon.
PENGARUH PENGGUNAAN VARIASI BERAT ROLLER DAN PEGAS PULLY SEKUNDER PADA CVT ( COUNTINUOUSLY VARIABLE TRANSMISSION ) TERHADAP DAYA, TORSI, DAN KONSUMSI BAHAN BAKAR HONDA BEAT PGM-FI TAHUN 2013 Candra Permana, Khoerul Nofa Nofa; Rahardjo, Winarno Dwi
Automotive Science and Education Journal Vol 9 No 2 (2020): Automotive Science and Education Journal
Publisher : Automotive Science and Education Journal

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Abstract

Penelitian ini bertujuan untuk mengetahui Pengaruh Penggunaan Variasi Berat Roller dan Pegas Pully Sekunder pada CVT (Countinuously Variable Transmission) terhadap Daya, Torsi, dan Konsumsi Bahan Bakar Honda Beat PGM-FI 2013. Penelitian ini menggunakan desain penelitian quasi experimental dengan bentuk one-shot case study. Hasil penelitian menunjukkan bahwa pengujian menggunakan berat roller 11 gram, 13 gram (standar), 15 gram dan konstanta pegas sliding sheave 2.45 N/mm, 2.94 N/mm (standar), 3.43 N/mm berpengaruh terhadap peforma mesin. Torsi tertinggi dicapai oleh berat roller 11 gram dan pegas dengan nilai konstanta 3.43 N/mm pada putaran mesin 3000 rpm sebesar 19.29 N.m. Daya tertinggi dicapai oleh berat roller 11 gram dan pegas dengan nilai konstanta 2.45 N/mm pada putaran mesin 5000 rpm sebesar 8.55 HP. Konsumsi bahan bakar yang paling ekonomis dari putaran rendah sampai putaran tinggi dengan penggunaan variasi berat roller 11 gram dan pegas 2.45 N/mm memiliki konsumsi bahan bakar spesifik sebesar 0.095 kg/kW.jam.
PENERAPAN PENERAPAN PERAGA MESIN DIESEL UNTUK MENINGKATKAN PEMAHAMAN KOMPONEN MESIN DIESEL PADA PRAKTIK MOTOR BENSIN DAN DIESEL Susanto, Edi; Rahardjo, Winarno Dwi
Journal of Mechanical Engineering Learning Vol 9 No 1 (2020): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

The purpose of this study is to determine the feasibility of a diesel engine display and findout how much student learning outcomes (understanding) improve about diesel enginecomponents by using the visual aid. Based on the results of the product feasibility test itis obtained a percentage of 82% for media experts with a very decent category and 78%for material experts with a feasible category. Based on the results of the study, an increasein the average of pretest-posttest value is 23 or 40%, the t-test shows the value of t count= 14.89> t table = 2.02. The increase of student learning outcomes indicates an averageof the N-Gain test = 0.57 with the criteria of moderate improvement.Keywords: Learning outcomes, visuals aid, understanding, diesel engine
PENGARUH PEMAJUAN WAKTU PENGAPIAN DAN PENINGKATAN RASIO KOMPRESI TERHADAP DAYA DAN TORSI SEPEDA MOTOR SUPRA FIT DENGAN BAHAN BAKAR LPG Anwar, Mahfudz; Rahardjo, Winarno Dwi; Wahyudi, Wahyudi
Sainteknol : Jurnal Sains dan Teknologi Vol 15, No 1 (2017): June 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v15i1.9508

Abstract

Tujuan penelitian ini adalah untuk mengetahui perbedaan daya dan torsi sepeda motor Supra Fit berbahan bakar LPG antara waktu pengapian standar dengan waktu pengapian yang dimajukan, rasio kompresi standar dengan rasio kompresi yang ditingkatkan, serta kondisi standar dengan kondisi waktu pengapian yang dimajukan dan rasio kompresi yang ditingkatkan. Metode penelitian yang digunakan adalah metode eksperimen, yaitu dengan menguji daya dan torsi sepeda motor berbahan bakar LPG pada dynotester. Waktu pengapian standar adalah 15° BTDC, sedangkan waktu pengapian yang dimajukan adalah 18° dan 21° BTDC. Rasio kompresi standar adalah 8,8: 1, sedangkan rasio kompresi yang ditingkatkan adalah 9,3: 1 dan 9,8: 1.Hasil penelitian menunjukkan adanya peningkatan daya dan torsi ketika waktu pengapian standar  dimajukan menjadi 18° dan 21° BTDC, dan ketika rasio kompresi standar ditingkatkan menjadi 9,3: 1 dan 9,8: 1.  Daya dan torsi juga mengalami peningkatan ketika rasio kompresi 9,3: 1 dengan waktu pengapian 18° dan 21° BTDC dibandingkan dengan kondisi standar, namun mengalami penurunan ketika rasio kompresi 9,8:1 dengan waktu pengapian 18° dan 21° BTDC.
Co-Authors - Basyirun Abd. Rasyid Syamsuri Afwan, Muhammad Aulia Agus Sulistiyanto, Agus Andhikatama, Alpha Bagas Anwar, Mahfudz Candra Permana, Khoerul Nofa Nofa Dwi Widjanarko Edi Susanto Fajar Irawan, Fajar Muryanto Muryanto, Muryanto Ramelan - Sigit Widigdo Prayogo, Sigit Widigdo Utomo, Eko Budi Wahyudi Wahyudi