https://journal.unimma.ac.id/index.php/benr <p style="margin: 0mm; margin-bottom: .0001pt;">Journal title :&nbsp;<strong>Borobudur Engineering Review</strong><br>Abbreviation :&nbsp;<strong>BENR</strong><br>ISSN : <a href="https://issn.lipi.go.id/terbit/detail/20210507321191719">2777-0850</a><br>DOI Prefix : 10.31603/benr by&nbsp;<img src="http://ijain.org/public/site/images/apranolo/Crossref_Logo_Stacked_RGB_SMALL.png" width="55" height="15"><br>Frequency : Biannualy<br>Type of peer-review: <strong>Double-blind</strong><br>Editors :&nbsp;See&nbsp;<a href="http://journal.ummgl.ac.id/index.php/benr/about/editorialTeam">Editorial&nbsp;Team</a>&nbsp;</p> Universitas Muhammadiyah Magelang en-US Borobudur Engineering Review 2777-0850 https://journal.unimma.ac.id/index.php/benr/article/view/11117 <p><em>The number of motorised vehicles has increased significantly in recent times. Derived petroleum products are still the main fuel for these internal combustion engines. But on the other hand, its availability is decreasing and its price is becoming increasingly expensive. This problem is the background to the importance of efforts to improve the efficiency of fuel consumption in motorised vehicles. One way to improve fuel efficiency is by increasing the optimisation of Air Fuel Ratio (AFR) with a control system. In this research, the control system used is an external engine control system (Honda Verza 150 FI) that works based on vehicle speed data. This control system works by resetting the fuel supply released when the motorbike decelerates so as to produce a better AFR value and more efficient fuel consumption. Based on the results of experimental tests conducted at 5 different deceleration speed variations (40 km/h, 50 km/h, 60 km/h, and 70 km/h) when using a modified ECU there is an increase in AFR value when compared to when using a standard ECU. The highest increase in AFR value occurs at a deceleration speed of 70 km/h with the AFR difference reaching 0.4 when compared to using the standard ECU. As for fuel consumption, the modified ECU is 150 cc more efficient than the standard ECU with the same test distance of 35.2 km</em></p> Dhimas Cahyo Anindito Muhammad Rasyid Hikmahtiar ##submission.copyrightStatement## 2024-03-31 2024-03-31 4 01 01 09 10.31603/benr.v4i01.11117 https://journal.unimma.ac.id/index.php/benr/article/view/11178 <p><em>Currently, welding is still very necessary for the increasingly advanced development of technology in the construction sector because it plays an important role in metal engineering and maintenance. This research aims to determine the effect of interpass temperature on deformation of weld results in ASTM A36 steel material. The method used in this research is an experimental method by measuring the deformation of the welded specimen. There are 9 specimens, the welding process uses shielded metal arc welding (SMAW), direct current reverse polarity (DCRP) with interpass temperature variations of 75 °C, 100 °C and 150 °C. The measurement results show deformation values ​​of 2.2°, 3.5° and 4° for each of the interpass temperatures of 75 °C, 100 °C and 150 °C. From the results of impact testing on specimens with interpass temperatures of 75 °C and 100 °C, it shows mixed fracture, namely brittle fracture and ductile fracture. The results of impact testing on specimens with an interpass temperature of 150 °C showed brittle fracture. The highest strength was at interpass temperature specimen of 100 °C, that is 211.79 Joules. And the lowest impact strength occurred in the interpass temperature specimen at 150 °C, that is 183.16 Joules. </em></p> Saifudin ST., M.Eng. Muhammail Muhammail Ilham Habibi ##submission.copyrightStatement## 2024-03-31 2024-03-31 4 01 10 26 10.31603/benr.v4i01.11178 https://journal.unimma.ac.id/index.php/benr/article/view/11191 <p>Kendaraan merupakan suatu alat transportasi yang sangat dibutuhkan diberbagai sektor. Saat ini di bidang transportasi sering terjadi kasus pencurian terutama di kendaraan darat. Kasus curanmor pada ditahun 2017 di wilayah Jawa Tengah cukup tinggi mencapai 869 kasus. Kejadian ini menjadi keprihatinan diberbagai pihak, terutama pemilik kendaraan. Hal ini terjadi disebabkan beberapa faktor. Salah satu faktor yang dominan diantaranya lemahnya sistem keamanan kendaraan. Untuk menanggulangi kasus pencurian sudah banyak tindakan yang dilakukan. Penggunaan kunci kontak rahasia, alarm maupun teknologi kunci kontak dengan <em>Immobilizer </em>telah dikembangkan.&nbsp; Faktanya kasus pencurian kendaraan masih marak terjadi. Hal ini menunjukkan sistem keamanan kendaraan masih rendah. Untuk itu perlu dikembangkan teknologi keamanan kendaraan yang lebih handal. Metode yang ditempuh dalam menangani permasalahan di atas, dengan mengembangkan teknologi <em>recognition driver sytem</em>. Teknologi <em>fingerprint </em>dan kamera pengintai juga dilengkapi dengan modul GSM untuk melakukan pengiriman SMS yang diaplikasikan dalam kegiatan ini. <em>Fingerprint</em>&nbsp; memiliki kelebihan sulit ditiru oleh pihak lain dan data foto untuk mempermudah pelacakan tindak kriminal, serta SMS untuk memberitahukan bahwa kendaraan sedang tidak aman (indikasi pencurian). Dengan harapan <em>security system</em> yang dikembangkan akan lebih aman</p> Muhammad Rizal Ibrahim Krisna Widi Ariyawan Sutoyo Sutoyo ##submission.copyrightStatement## 2024-03-31 2024-03-31 4 01 27 39 10.31603/benr.v4i01.11191