Guys, it is finally with us -- after at least a decade, but more probably two or three, of research and development, pulsejet-style ignition seems to be ready for use in piston engines.
Look at this article: http://www.gizmag.com/go/4695/
In the same online magazine, there is also an announcement of a Mercedes engine with similar technology -- they call it 'Diesotto', as it marries the Otto cycle and the Diesel cycle by the grace of 'auto-ignition', which is essentially the same thing that keeps pulsejets igniting 200+ times a second.
Took them a long time to perfect. I know that Russians played with it for a long time, but abandoned it. Also, Honda tinkered with the concept for ages. All of a sudden it's ready from at least two companies.
Free radical ignition in piston engines at last
Moderator: Mike Everman
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Re: Free radical ignition in piston engines at last
Ha! took them long enough indeed. It's actually a pretty simple concept...
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Re: Free radical ignition in piston engines at last
Very simple on paper (and in a pulsejet) but in practice it obviously doesn't work as simply as that. I guess the four separate 'strokes' aspirate the engine so well that all traces of free radicals are removed. You can see that the Sonex engine provides a kind of 'shelter' for the 'old charge' to survive from one cycle to the next and reignite the fresh charge. I don't know what Mercedes does in its DiesOtto to preserve the free radicals.metiz wrote:Ha! took them long enough indeed. It's actually a pretty simple concept...