Diesel engine with a piston made of Aluminum alloy?

Replies

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  Siddhant Mukherjee

  Generally components in diesel engine should have high inertia so that during the compression stroke there are less fluctuations in speed of piston because the compression ratio is so high. Aluminium alloys are tough but light and hence not used in diesel engines. It will be possible to run it but with a very heavy flywheel. why concentrate a heavy mass at a point its better to distribute it uniformly among moving components. Also did you do a simulation for fatigue? Generally aluminium alloys have a low endurance limit. Hence, not preferred in diesel engines. But, a lot of research is going on making aluminium alloys compatible for diesel engines for it lightweight will enhance responsiveness of the engine.
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  Santhosh M

  Thanks a lot for ur suggestion #-Link-Snipped-#... Wil do it and tel u abt the results.... 😀
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  DADISETTY GOVIND

  S.mukherjee

  Generally components in diesel engine should have high inertia so that during the compression stroke there are less fluctuations in speed of piston because the compression ratio is so high. Aluminium alloys are tough but light and hence not used in diesel engines.

  sir please cn u give me a list or link for materials used for mfg engine n reson of using that material like u have given above
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  Shashank Moghe

  I work in the Engine Components Industry. I can give you a simple reason why it is not the case (why Al pistons are not used). Due to the high peak pressures in the diesel combustion chamber, higher fatigue and structural strength is required. This can be achieved only with steel forgings. Hence these pistons are steel, not Al.
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  Sarathkumar Chandrasekaran

  shashank Moghe

  I work in the Engine Components Industry. I can give you a simple reason why it is not the case (why Al pistons are not used). Due to the high peak pressures in the diesel combustion chamber, higher fatigue and structural strength is required. This can be achieved only with steel forgings. Hence these pistons are steel, not Al.

  thanks for providing simple and efficient explanation