REFLECTOR: Running LOP

[michalk]

How much do they want for that THX system?
How much to upgrade a spark plug?

Bernard Despins wrote:
> The THX system can be implemented using instrumented spark plugs (like 
> the PRISM system) instead of drilling and tapping a new hole.  You send 
> the plug you want to instrument (automotive style in my case)  to a 
> company which uses electrical discharge machining to bore a hole in the 
> right place and then install the pressure probe. 
> 
> I've looked into the ionic sensing concept, but could not find enough 
> information.  The biggest problem that I could find, was that the signal 
> being monitored is very small compared to the large voltage spikes 
> occurring in neighboring plugs.  All commercial pressure monitors I 
> could find used a system of fiber optics to measure the movement of a 
> tiny diaphragm .  This decoupled the noise.  I'm sure ionic sensing is 
> coming though...
> 
> Bernard
> 
> Brian Michalk wrote:
> 
>>I'm all over pressure sensing.  I looked at your link.  It looks like 
>>you need to drill and tap a new hole.
>>
>>Have you thought about ionic pressure sensing?  I'm going to build one 
>>for myself one of these days after I'm flying.
>>
>>GAMI says they can run avgas with diesel contamination and with PP 
>>sensing, the engine runs without detonation.
>>
>>This would solve the lead problem, but I think Volvo or SAAB has a 
>>patent on the ionic sensing thing.
>>
>>  
> 
> 
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
> 
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html