pistons refrigeration

[Gary Derian]

Slava,
    I think you are asking about oil cooling of pistons.  In english, when
we say refrigeration, we mean a mechanical cooling device using a working
fluid and a compressor to pump heat.  For simple heat exchange between cool
and warm objects, we use the term cooling.

    Anyway, to answer your question, oil cooling of the piston by squirting
engine oil at the underside is used mostly to prevent overheating and loss
of strength of the piston.  There may be some added resistance to detonation
but this effect is small.
Gary Derian <gderian at cybergate.net>



>I wish to know your opinion about pistons refrigeration by oil on high
boost
>engine.
>I know this system is using on Volvo 850 turbo.  And I interesting what
>American car have
>this system.  Does this system relay effect on detonation resistance?
>
>I will convert my normal aspirated engine (Mercedes V8  5 liters) to
>two-turbo engine with
>boost up to 20 psi.
>
>Do really this system will be useful for my turbo-engine.
>
>Regards
>Slava.