[TheForge] pneumatic tools and pneumatic tool oil

[Jeff Wilson]

The replies I'm seeing here are addressing hydraulic systems, where as the
question was regards pnumatic systems.  What am I missing?
Jeff
A misty rainy day in the northwest.

"What appears to be coming at you is coming from you." -Jack Flanders

On Jul 22, 2016 2:29 PM, "Harry Wise" <hlwise at me.com> wrote:

> Compression is not a side issue in diesel engine as I understand it.
> Adiabatic compression is the ignition mechanism. When a gas is compressed
> it gets hotter. If that temperature exceeds the autoignition temperatures
> the fuel/air mix then you get combustion. Of course in a hydraulic system
> you have liquids which do not really compress so you do not get the heat
> build up. And like you said Bruce, there is no oxidizer in the hydronic
> system. Lets hope there is not anyway.
>
> Harry Wise
> Huntsville AL
>
>
> > On Jul 22, 2016, at 7:37 AM, Bruce . <freemab222 at gmail.com> wrote:
> >
> > See my responses inserted below.
> >
> > Bruce
> > NJ
> >
> > On Thu, Jul 21, 2016 at 11:22 PM, terry l. ridder <
> terrylr at blauedonau.com>
> > wrote:
> >
> >> hello
> >>
> >> while working on the truck with the impact tool, a question popped into
> >> my mind. Wh
> >> ​y does not the oil in an pneumatic tool, "diesel", i.e.
> >> combust. there is compression and there is oil. I use mineral oil so I
> >> am not entirely sure what conditions would have to be for mineral oil to
> >> "diesel". I would not want to try diesel fuel or keresine.
> >>
> >
> > ​Because you don't have a proper fuel-to-air ratio to support combustion.
> > There would be little or no air​
> >
> > ​inside a hydraulic system, as air bubbles would defeat the purpose.
> Also,
> > it's unlikely there'd be a source of ignition in any event.
> >
> > Compression is a side issue.  Compression is no​t inherently needed to
> > support combustion.  It's needed to support engine operation, and, in a
> > Diesel engine, forms part of the ignition process.  It also may change
> the
> > ignition characteristics of a given fuel-to-air mix, but that's also a
> side
> > issue w/ Re: hydraulic systems.
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