Design and Analysis of a Euro-7 13-Litre Heavy Duty Engine Flywheel Housing under Static and Vibration Loads
T. Gopala Krishnan1, S. Vijay Ananth2, C. Gnanavel3, A. Ajith Arul Daniel4, Ashwin R.5, Azhagesan N6
1Dr. T. Gopala Krishnan, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
2Dr. S. Vijay Ananth, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
3Dr. C. Gnanavel, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
4Dr. A. Ajith Arul Daniel, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
5Ashwin R, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
6Azhagesan N, Department of Mechanical Engineering, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai (Tamil Nadu), India.
Manuscript received on 28 October 2025 | First Revised Manuscript received on 03 November 2025 | Second Revised Manuscript received on 19 November 2025 | Manuscript Accepted on 15 December 2025 | Manuscript published on 30 December 2025 | PP: 6-13 | Volume-14 Issue-1, December 2025 | Retrieval Number: 100.1/ijese.L263013121125 | DOI: 10.35940/ijese.L2630.14011225
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The forthcoming Euro-7 emission framework has redefined performance and durability standards for commercial diesel engines, compelling manufacturers to enhance drivetrain structures without compromising on mass efficiency or NVH (Noise, Vibration, and Harshness) characteristics. This study presents the design and finite-element analysis of a flywheel housing developed for a 13-litre Euro-7-compliant heavy-duty diesel engine. A parametric 3D model was constructed in CATIA V5 and evaluated in ANSYS Workbench 2024 R2 for combined torque, clutch thrust, and gearbox overhung loads. Modal and harmonic response analyses were employed to verify frequency separation from engine firing orders and to assess the damping potential of compacted graphite iron (GJV-450). The optimised design achieved a 17 % weight reduction, a minimum factor of safety of 1.75, and a first-mode frequency of 173 Hz, well above the sixth firing order (≈ 120 Hz at 2400 rpm). The results affirm that a well-ribbed CGI flywheel housing satisfies Euro-7 durability and NVH targets while remaining castable and lightweight.
Keywords: Euro-7 Engines; Flywheel Housing; Finite Element Analysis; Nvh; Compacted Graphite Iron; Heavy-Duty Diesel; Modal Response; Lightweight Optimisation.
Scope of the Article: Mechanical Engineering and Applications