Maximum advance

[Greg Hermann]

At 10:43 PM 7/12/01, Bruce wrote:
>Probably a waste of BW, but, chamber polishing / smoothing is a well kept
>secret.
>Bruce

OK--SHHHHHHH !!!! :-)

Greg
>
>
>> BUT--heat transfer to the piston crown and chamber walls, both convective
>> and radiative, is, in fact, _quite_ significant, especially while near
>TDC.
>> I would hazard a guess that it can account for somewhere between 10 and
>20%
>> of the total heat input value of the fuel. Which is precisely why piston
>> and chamber polishing and thermal barrier coatings make a significant
>> difference in performance--both in terms of torque/power output and BSFC
>> (fuel efficiency).
>> Greg


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