[Vwdiesel] Hydraulics...

[H.Hagar]

Let's talk gases for a moment.  Skipping details I've long since 
forgotten, the ideal gas law is 

PV=nRT        Val


IMHO  both Hydraulics (injection)  and Pneumatic (Ignition) discussions belongs here.

A good way to explain compression of air is like Val said    think of pressure as Voltage
and volume as Amps.     Double the voltage  -- lower the amps by half for same Watts.

Double the pressure -- lower the volume by half --- same result with no energy added
or subtracted.            I think of it as Adiabatic  and Katabatic   rules. (LAW?)

But temperature doubles when volume is cut in half.---same energy. So if you want to
know your ignition temp ?   60 F day  23 to one compression --there you are.

Like Val maybe  I am rambling.    It is all important if you really want to appreciate
Rudolf Diesel and the Rabbit.
Val you better double check my explanation. (I don't mind being wrong).

Hagar.

PS: The pressure is on.