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Lilis Yuliati
Departement Of Mechanical Engineering Brawijaya University, Malang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : Automotive Experiences

 1 
Probabilistic Performance Prediction of a Hydrogen-Converted SI Engine Using a Markov-Chain-Wiebe Framework Purnami; Nugroho, Willy Satrio; Yuliati, Lilis; Alamsyah, Fikrul Akbar; Wardana, ING; Wahid, Abdul Mudjib Sulaiman
Automotive Experiences Vol. 9 No. 1 (2026): Issue in Progress
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.15544

Abstract

This study employs a novel Markov-chain modeling framework to analyze the combustion-performance interaction in a hydrogen-fueled spark-ignition engine. The methodology integrates a Wiebe heat-release model within a Markov-chain state-transition framework, where each discrete engine state defines combustion parameters and probabilistic transitions capture cycle-to-cycle variability. Results demonstrate that engine behavior is dominantly governed by combustion phasing, with spark timing exerting primary control over torque, efficiency, and brake-specific fuel consumption (BSFC). Sensitivity analysis confirms spark timing produces the steepest performance gradients, while ignition voltage offers secondary benefits and engine speed exhibits minimal influence. The model reveals a highly nonlinear torque response to spark advance, characterized by a rapid rise culminating in a narrow maximum brake torque (MBT) plateau at 8°–10° BTDC, corresponding to a distinct BSFC minimum. Significant data scatter underscores the stochastic nature of hydrogen combustion, arising from multidomain interactions between air-fuel ratio, ignition strength, and phasing. The Markov-chain approach successfully captures this coupled deterministic-probabilistic behavior, highlighting the critical need for precise spark-timing control to optimize performance in hydrogen applications.
Co-Authors A.A. Ketut Agung Cahyawan W Achmad As'ad Sonief Adhitya Wardhono Adi Yermia Tobe Agung Budi Sulistiyo Agung Sugeng Widodo Agung Sugeng Widodo Agus Luthfi Aji, Supa Kusuma Ali Akbar Andy Hardianto Andy Hardianto Aries Boedi Setiawan Aritonang, Gabriel Rianto Ariyani, Novi Arwin Arwin Ati Musaiyaroh, Ati Atmaja, Purna Pria Badara Shofi Dana Cholil, Mochammad Christia Meidiana Defmit B.N. Riwu Denny Widhiyanuriyawan Desyandri Desyandri Dewi, Beti Sari Dewi, Sukhma Kusuma Djarot Bangun Darmadi Dominikus Rato Dwi Kristanto Edy Hariyadi Eko Siswanto Ena Marlina Endah Kurnia Lestari Erlangga, Okyviandi Putra Faiz, Naufal Muhammad Faiza, Laila Niswatul Fajar Wahyu Prianto Fauzan Baananto Fikrul Akbar Alamsyah Firda, Rochmania Francisca Gayuh Utami Dewi Gunawan, Chandra Hamidi , Nurkholis Hamidia, Nurkholis Heru S.P. Saputra I.N.G. Wardana I.N.G.Wardana I.N.G.Wardana Ibadurrohman, Ibrahim Ahmad Ichtiaraka Amarullah Ilham, Mochamad ING Wardana Ketut Tirtayasa Khusnul Khatimah, Diah Ayu Latifah, Khusnul Lazuardi, Muhamad Luthfi Loasana, Okto Rosario Nisen Luqyana, Salsabilla Firyal M. Arsad Al Banjari M. Arsad Al Banjari, M. Arsad Maulana , Syahrizal Maulana, Reza Bagas Mega Nur Sasongko Moch. Agus Choiron Moch. Agus Choiron Mochammad Khoirul Rosidin Moehammad Fathorrazi Moh. Adenan Muhammad Iqbal N. Ari Subagio Najah, Amaliyan Nanik Istiyani Nissa, Tiffany Dian Nugroho, Arief Budi Nugroho, Setyawan Dwi Nur Rachman Supadmana Muda Nurdin Hasananto Teguh Nurkholis Hamidi Oyong Novareza Pragiwaka, Rafif Ezrha Pratama, Rensia Yuliati Pratikto Pratikto Pratikto, Pratikto Pratiwi, Izzatul Juhan Salsa Bila Priyanto, Fajar Wahyu Pujohastarto, Ilham Ridwan Purnami Purnami Purnami Purnamie Titisari Puspitasari, Nazila Dwita Rahma Redi Bintarto, Redi Riska Rian Fauziah Rohmah, Fifi Nur Rudianto Raharjo S Siswanto Saputra, Indra Adi Sari Dewi, Beti Sarip Sarip sarip, sarip Septarina Prita Dania Sofianti Shulthoni, Mochammad Simanungkalit, David Siswanto Siti Komariyah Slamet Wahyudi Sonief, Achmad As’ad Sudjito Soeparman Sulaksono, Leonardo Kurniawan Susanto, Arnis Budi Sutantio, Raden Alamsyah Teguh Dwi Widodo Titik Maslikatin Tobe, Adi Yermia Udin, Misbach Utami, Shintya Fatma Tri Wafa, Mochammad Ali Wahid, Abdul Mudjib Sulaiman Wibisono, Sunlip Widya Wijayanti Wilantari, Regina Niken Willy Satrio Nugroho Winarto Winarto Yaqinah, Nuriyatul Inayatil