Jim Blair, Lynnwood, WA '87 Comanche, '83 Jeep J10, '84 Jeep J10 > Date: Wed, 21 Nov 2007 11:22:57 +0000 > From: airpoweredvehicles@xxxxxxxxxxxxxxx > To: airpoweredvehicles@xxxxxxxxxxxxxxx > Subject: [airpoweredvehicles] Digest Number 227 > > There is 1 message in this issue. > > Topics in this digest: > > 1. Lee rogers air car profect - sourcing parts need, plz help guys > From: ashtweth_nihilistic > > > Message > ________________________________________________________________________ > > 1. Lee rogers air car profect - sourcing parts need, plz help guys > Posted by: "ashtweth_nihilistic" ashtweth@xxxxxxxxx ashtweth_nihilistic > Date: Tue Nov 20, 2007 4:31 pm ((PST)) > > Greetings to all, as you know we have posted the idea we have open > sourced in the file sections, we are ready to begin this project and > have every thing ready to go. Guys we need help with sourcing some > valves if not then we may need to get them customary done. > > Guys here are the details and some theory for builders, please let me > know if you have any advice for the valves we can then build this for > the group! > > -------------------------------------------------------- > > "I have a 3 cylinder 4 stroke engine and a lot of that pneumatic > stuff, but no valve that is able to withstand 40 bar pressure and > which is able to open and close within some few milliseconds" > > -------------------------------------------------------------- > > Lee rogers Air car principle: > > Have a look for Joule-Thomson-Effect! > Read carefully! > > Idea is to let HEAT do the job...move the piston...drive the turbine > blades, and heat does the job, if you let > ******************************************************** > A GAS EXPAND IN UNDER PRESSURE REGION WHILE IT DOES WORK > ******************************************************** > LR'S engine had problems if driven below 2000 RPM. The reason is > simply, that piston movement was to slow, compared to expansion of > injected air, so heat didn't the job, but pressure did. Think about > it. The key is that simple. I can't understand why we > couldn't see it all the time. Don't get caught from vortex too much. > Vortex is an ideal heat-to-directed-movement-transformer, but not much > more (in this case), so first understand its principle, and then > understand that you can have similar effects without a vortex as well. > You don't need a 1:1 tornado-model to get energy from heat. > All you need is LR and a source for the damned valves! > > LR ist simple, and the patent explains all very well. > The compressor is not a special one. This part has to be designed > simple in a low-losses-manner. The key is, that energy out (air > injection -> work) and energy in (re-compression) are not equal > events. Compression happens like described in schoolbooks, where we > need the formula > ************* > pxV = nxRxT > ************* > But at the other side we have air INJECTION. Here comes > Joule-Thomson-Effect into play, where air releases MORE > energy towards piston due to EXPANSION of INJECTED air into a RECEDING > medium. Thats the key that no one seems to notice. The air cools down > much more due that, than you would calculate with the formula above. > Backpumping that cold and dense air makes unit selfsustain. > In a sense its easy stuff. You have to insulate the high pressure > chamber thermally, and you may have a pressure offset from exhaust > back to compressor, a pressure above 1at, so that the compressor does > not have to pump from "0" bar, and you can design this "pipe" like a > heat exchanger, so you are able to gain HEAT from environment again, > to push up the pressure/volume of the precompressed air. The injector > valves have to be as near as possible to the cylinder. > > > I have a 3 cylinder 4 stroke engine and a lot of that pneumatic stuff, > but no valve that is able to withstand 40 bar pressure and which is > able to open and close within some few milliseconds. And as soon all > parts are there, it will need some experimentation and optimization, > as soon all is done right. An overall pre-calculation ist not easy > done, as lot of parameters are moving targets, and a lot depends on > RPM, injection timing, duration and amount. > > PS: If you know how I could get some valves, please let me know. It > would be a great help, man. > > > > > > Messages in this topic (1) > ________________________________________________________________________ > ________________________________________________________________________ > > > > ------------------------------------------------------------------------ > Yahoo! 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Groups is subject to: > http://docs.yahoo.com/info/terms/ > > ------------------------------------------------------------------------ > _________________________________________________________________ Put your friends on the big screen with Windows Vista® + Windows Live™. http://www.microsoft.com/windows/shop/specialoffers.mspx?ocid=TXT_TAGLM_CPC_MediaCtr_bigscreen_102007 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.amc-list.com/pipermail/amc-list/attachments/20071124/a2bfbd36/attachment.htm _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list