https://jsaem.my/index.php/journal/issue/feed 2025-07-06T08:27:02+00:00 Zulhaidi Mohd Jawi journal@saemalaysia.org.my Open Journal Systems <p class="p1">Journal of the Society of Automotive Engineers Malaysia (JSAEM) is peer-reviewed and published three times a year by Society of Automotive Engineers Malaysia. It strives to provide a medium of publication for original research in the multidisciplinary areas of automotive engineering. Coverage of JSAEM includes, but is not limited to:</p> <p class="p1">- Autonomous system<br />- Automotive consumerism<br />- Energy efficient technology<br />- Engine system<br />- Human factors and ergonomics<br />- Management and economics<br />- Noise, vibration and harshness<br />- Production and manufacturing<br />- Safety<br />- Vehicle dynamics and control</p> <p class="p1">JSAEM supports barrier-free online dissemination of scholarly research. The electronic full text version of the journal is available free of charge.</p> https://jsaem.my/index.php/journal/article/view/268 2025-07-06T08:21:25+00:00 H.A. Hassan hazman.hassan@psas.edu.my N. Aliman a@b.c Z.M. Jawi a@b.c

<p>Dry Soot emissions pose a significant challenge for diesel engines, as they can severely impact human health and the environment. This study investigates the impact of oxygenated fuels on Dry Soot emissions from a TF120 YANMAR direct injection compression ignition diesel engine. Tests were conducted at engine speeds ranging from 1200 to 2400 rpm under no load, 50% of load, and 100% of load conditions. Diesel fuel was used as a comparison between two types of biodiesel blend fuels and two types of water-in-biodiesel blend fuels. The biodiesel blends included 5% biodiesel with 10% methanol (B5M10) and 10% biodiesel with 10% methanol (B10M10). The water-in-biodiesel blends included 3% water in the B5M10 blend (B5M10E3) and 3% water in the B10M10 blend (B10M10E3). The results indicate that the water-in-biodiesel blend fuel produced lower dry soot emissions than biodiesel blends and conventional diesel, highlighting their potential as environmentally friendly fuel alternatives.</p>

2025-07-06T00:00:00+00:00 Copyright (c) 2025 https://jsaem.my/index.php/journal/article/view/269 2025-07-06T08:24:09+00:00 E. Shamsudin eliza@psas.edu.my R.A.N. Riki Adikumara a@b.c M.N.F. Mohd Erdieshafry a@b.c

<p>The agriculture industry has identified pest management in fertigation-based farms as a challenging task. Innovations in pesticide spraying technologies are crucial, as manual methods are laborious, inefficient, and hazardous due to chemical exposure. Therefore, this research introduces a pesticide spray robot. The design focuses primarily on flat surfaces. The development consists of three main layers: the development and integration layer, the communication layer, and the application layer. An ESP32 is used as the main controller, while the Android ESP Bluetooth Dabble app enables communication and control via Android smartphones. The robot’s performance was tested and validated on a real fertigation farm at Kebuniti Politeknik Sultan Azlan Shah. Results show that the robot can be controlled using the Dabble application and can communicate over a Bluetooth network generated by the ESP32 at a maximum distance of 20 meters. Additionally, the robot can move on various types of flat surfaces, including uneven farm roads, at up to 30% of its maximum speed. In the future, this robot has the potential to revolutionize pest control, improve crop health and productivity, and eliminate the need for human labor and worker exposure to chemicals.</p>

2025-07-06T00:00:00+00:00 Copyright (c) 2025 https://jsaem.my/index.php/journal/article/view/270 2025-07-06T08:27:02+00:00 N. Shaari najwa@miros.gov.my N.F. Paiman a@b.c Y. Ahmad a@b.c A.H.A. Ghani a@b.c H. Makhpol a@b.c A.M. Radzi a@b.c F. Lamin a@b.c N. Borhan a@b.c N. Jamaluddin a@b.c A. Azhar a@b.c Z.M. Jawi a@b.c

<p>The usage of Child Restraint System (CRS) in vehicles can increase the children's safety in the vehicle if they use it correctly. The study aimed to observe CRS usage, to determine the level of knowledge and behaviour towards CRS, and to evaluate the effectiveness of the intervention program. An intervention program was implemented for parents in 7 participating kindergartens at Kajang and Putrajaya. CRS Observation and survey were done before and after the program. A total of 120 respondents participated in the study. The result shows that all questions related to knowledge about CRS answered by parents showed a positive increase after the program compared to before the program. Furthermore, the mean of all dimensions (attitude, subjective norms, perceived behavioural control, behavioural intention) was increased after the program. The overall use of CRS among children travelling to kindergarten is low at 2.3% after the<br>program. In conclusion, this study showed the effectiveness of educational intervention on knowledge, attitude, subjective norms, perceived behavioural control, and behavioural intention among parents.</p>

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