[Gasification] Re: Gasification Digest, Vol 22, Issue 11

[Michael Redler]

Most of the pressures in the cylinder can be quantified using the ideal gas equation, PV=nRt. However, I'd suspect that the the products of combustion might also occupy more volume than the fuel-air mixture going in - if the fuel was a solid or liquid.

The rate of combustion is important since one would not want all the combustion to occur at TDC due to the punishment taken by the piston/cylinder walls, wrist pin connecting arm, crank, etc. I imagine that there would also be some improved heat transfer (additional heat loss from within the cylinder) which would decrease MEP in such a situation.

...my $.02

Mike 

carlos.gurgel at pesquisador.cnpq.br wrote:
  I would prefer: the pressure moves the piston!!!!
Work=F.dx
F=P.A
The heat is responsible for the pressure rise...

Quoting Jeff Davis :

> Dear Col and list,
>
> Some would say that mean old Mr Heat moves the Piston.
>
> On Thursday 11 May 2006 10:55 am, col wrote:
> > While the flame velocity may be important in fuel efficiency,surely
> > it is the explosion of the burnt gas in the cylinder that drives the
> > piston,not the flame velocity .
>
> --
> Jeff Davis