Measuring dynamic cylinder pressure

[Larry D Stricker]

Bryan,
I work on air operated valves in a Nuclear Power plant and use diagnostic
equipment for testing them that has been used on a VW 4 cylinder. It
measured the cylinder presures vs degree of rotation under dynamic
conditions. The company that built the equipment was the Fisher Valve Co.
out of Sherman, Texas. This was done in the early 90s and the displays
were graphic representations. Fairly straight-foward to read.
Dvae S.

On Wed, 17 Sep 1997 17:11:00 -0700 (PDT) "Zublin, Bryan (SD-MS)"
<BZUBLIN at nlvl.com> writes:
>
>Has anyone ever installed a pressure transducer in the spark plug hole 
>and 
>run the engine with that cylinder's spark and fuel injector disabled?  
>High 
>speed data acquisition would be required, but it would allow one to 
>measure 
>the effects of various mods (cam, intake, exhaust, boost, etc).  
>Higher 
>pressure would indicate better cylinder filling, although some 
>temperature 
>compensation would probably be required.  The max pressure for a 
>non-firing 
>cylinder is 120 to 200 psi, well within the range of reasonably priced 
>
>transducers.
>
>Bryan Zublin
>bzublin at nlvl.com
>