The Journal of Engine Research

The Journal of Engine Research

Experimental investigation of the effect of changing elements in the cylinder liner of BMP1 diesel engine on surface hardness

Document Type : Original Article

Authors
MohammadJavad Afarid 1
Majid Ghoreishi 1
Mohammad Hosseinpour Sharafshad 2
1 Mechanical Engineering Department, KNT University, Tehran, Iran
2 Management Department, Tehran University, Tehran, Iran
10.22034/er.2025.2057949.1086
Abstract
Cylinder liners are critical and sensitive components in internal combustion engines and must exhibit maximum strength and durability. In this study, the composition of the cylinder liners used in the BMP-1 vehicle was analyzed, and the effects of compositional changes on hardness were evaluated. These results were then compared with the specifications of standard components manufactured from Russian alloy steel 38x2MφA (equivalent to 8509 under the German DIN standard). The study involved comprehensive engineering analyses, followed by the manufacturing of a redesigned cylinder liner with modified elemental composition. The production process included centrifugal casting and subsequent machining operations such as stress relief, primary and secondary face and inner surface machining, grinding, and honing. By adjusting the elemental composition — specifically reducing nickel content from 3.23% to 0.09% and increasing aluminum content from 0.015% to 1.20% — a 15% improvement in durability was achieved.
Keywords
Diesel Engines
Cylinder Liners
Centrifugal Casting
Stress Relief
Machining
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  • Receive Date 26 April 2025
  • Revise Date 07 May 2025
  • Accept Date 22 May 2025