BlueZ31 Posted April 26, 2009 Share Posted April 26, 2009 Im out here at twentynine palms c.a. for electronics/comm school and in my downtime ive been tooling with some ideas of mine, one includes this. Ive got my hands on a battery powered blower which flows 460cfm at 230mph, im curious as to if i was to use 2.5in tubing to connect this to a relatively average sized turbo what could be done to possibly create boost, (this is just to see if any would be possible, an experiment if you will) now i know that the sound wave that preceedes the exhaust wave creates force on the impeller and pressurizes the system, so in theory could i combine a ultrasonic or just plain loud sound device in combination with the blower to create enough force on the impeller blades to pressurize a average size 4 or 6 cylinder gasoline engine? my other idea would be to use a hydraulic system using a high pressure (1,400psi) water jet on the impeller in a closed system, but im dead set on the above mentioned idea.....any thoughts or criticisms? i would be using my 87 zx as the testbed for this. Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted April 27, 2009 Share Posted April 27, 2009 Semi related. http://forums.hybridz.org/showthread.php?t=147040 Quote Link to comment Share on other sites More sharing options...
BlueZ31 Posted April 28, 2009 Author Share Posted April 28, 2009 also if anyone can give me an estimate of the decible rating of the exhaust pulse exiting the combustion chamber ( im guessing around 150db) and also an estimate of the exhaust pulse frequency around 3,000-3,500rpms on a 6-cylinder engine (i know cams ect affect this i just need a estimate for instructional purposes only) anyone who can provide this info i would greatly appreciate thx. Quote Link to comment Share on other sites More sharing options...
TimZ Posted May 5, 2009 Share Posted May 5, 2009 also if anyone can give me an estimate of the decible rating of the exhaust pulse exiting the combustion chamber ( im guessing around 150db) and also an estimate of the exhaust pulse frequency around 3,000-3,500rpms on a 6-cylinder engine (i know cams ect affect this i just need a estimate for instructional purposes only) anyone who can provide this info i would greatly appreciate thx. No idea on the SPL (I'm assuming that this is what you were looking for in the decible rating question). Exhaust Pulse Frequency: 3000rpm single runner: (3000rev/min)*(1min/60sec)*(1 pulse/2 rev)=25pulse/sec 3000rpm at the collector: (3000rev/min)*(1min/60sec)*(6 pulses/2 rev)=150 pulses/sec 3500rpm single runner: 29.17pulse/sec 3500rpm at the collector: 175 pulses/sec Quote Link to comment Share on other sites More sharing options...
BlueZ31 Posted May 6, 2009 Author Share Posted May 6, 2009 awesome, exactly the formula i was looking for, im in the process of putting together a experimental version, it looks as though ill have to have a speaker and controller that will pulse exactly as the engine would to have (i would assume) the same effect on the impeller, and as it would appear from my research about 120db would be correct if not slightly less. Quote Link to comment Share on other sites More sharing options...
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