Failure Analysis of Valve Unit for MAN 9L21/31 Diesel Engine Generator

Authors

  • Wilarso Sekolah Tinggi Teknologi Muhammadiyah Cileungsi. Jl. Anggrek No. 25, Perum PT. SC, Cileungsi, Cileungsi, Bogor, 16820 Jawa Barat, Indonesia
  • Che Wan Mohd Noor Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia
  • Ahmad Faisal Ayob Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia
  • Wan Nurdiyana Wan Mansor Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia
  • Muhamad Ali Pahmi Sekolah Tinggi Teknologi Muhammadiyah Cileungsi. Jl. Anggrek No. 25, Perum PT. SC, Cileungsi, Cileungsi, Bogor, 16820 Jawa Barat, Indonesia

DOI:

https://doi.org/10.37934/araset.33.3.185193

Keywords:

Microstructure, chemical composition, hardness test, diesel engine valve, power plant

Abstract

Damage to the MAN 9L21/31 generator valve system caused issues with the industrial generator. The MAN 9L21/31 generator produces 1,980 kW and has nine in-line cylinders. It is powered by a gasoline engine. The purpose of this research was to harm the MAN 9L21/31 exhaust valve. The engine's cylinder head number 7 has a gutter that displays a temperature rise indication of up to 457 degrees Celsius. The procedure for analyzing valve hardness, chemical makeup, and microstructure. the outcomes of the material hardness test on Sample I-1 Numbers 10, 11, and 12 (523 HV), as well as on Sample I-2 Numbers 1 and 2 (558 HV) (523 HV). The valve face is hardened using electric arc welding using nickel, chromium, and high molybdenum alloy steel. According to microscopy testing, austenitic dendrites represent thermal fatigue corrosion in the region of the stellite microstructure. From the thick side, the microstructure of the bainite-ferrite valve base material can be seen, with fine carbide grains distributed evenly in several regions of thermal fatigue corrosion fracture. Austenitic dendrites, a type of thermal fatigue corrosion, also develop in the stellite microstructure region. More than 86.1%–86.5% Fe is the primary chemical component of the material that makes up the main valve. Hardness is produced by a carbon compound of iron with 0.038% to 0.042% carbon. Despite having a composition of only 1.67%, this Fe-C alloy is still referred to as alloy steel. It has excellent elastic and ductility properties thanks to the additional Si material, which ranges from 3.02% to 3.34%.

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Author Biographies

Wilarso, Sekolah Tinggi Teknologi Muhammadiyah Cileungsi. Jl. Anggrek No. 25, Perum PT. SC, Cileungsi, Cileungsi, Bogor, 16820 Jawa Barat, Indonesia

wilarso09@gmail.com

Che Wan Mohd Noor, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia

che.wan@umt.edu.my

Ahmad Faisal Ayob, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia

ahmad.faisal@umt.edu.my

Wan Nurdiyana Wan Mansor, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia

nurdiyana@umt.edu.my

Muhamad Ali Pahmi, Sekolah Tinggi Teknologi Muhammadiyah Cileungsi. Jl. Anggrek No. 25, Perum PT. SC, Cileungsi, Cileungsi, Bogor, 16820 Jawa Barat, Indonesia

ali_pahmi@yahoo.co.id

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Published

2023-11-17

How to Cite

Wilarso, Che Wan Mohd Noor, Ahmad Faisal Ayob, Wan Nurdiyana Wan Mansor, & Muhamad Ali Pahmi. (2023). Failure Analysis of Valve Unit for MAN 9L21/31 Diesel Engine Generator. Journal of Advanced Research in Applied Sciences and Engineering Technology, 33(3), 185–193. https://doi.org/10.37934/araset.33.3.185193

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