Originally Posted by FlexyTJ
3.28hp/per cid is impressive for natural aspiration
But flowing 700ccm of intake volume into that size engine at that rpm doesn't seem plausible naturally aspirated?
I am not surprised at all with your skepticism. Because I had it myself, even if my second prototype was already sold, I still thought that it was rather impossible and if I had 100 horsepower, I would be very happy .. Because I also had some of my previous activities and the first prototype too .. But the first prototype ended its life, on the inlets of height 5 mm, because only later I wanted to cut them into larger dimensions, not to make new cylinder sleeves, only to use one, after enlarged I started with the smallest ones, which were never increased ... For this, the first ptototype will start working after the first 10 turns made by the starter ... which confirmed me in the possibility of this system at all .. And it has been described in my thesis ...
under the influence of natural aspirated, just like you, I have designed a second prototype .. But already a computer program told me that even statically my cylinder 300 ccm is enlarged thanks to the additional capacity of the suction piston, up to 480 ccm, which gave me real hope for a power engine 100 horsepower ... and in this way, I chose all other parameters for such a new hopper capacity. But the engine did not go well, did not respond to throttles at all, and all the time worked at about 3500 rpm for a minute, unable to increase it. I have been looking for reasons for a long time, I thought that some resonance on exhalation may introduce these limitations .. and I followed the wrong path .. Until one day, having throttles I attached wire for full opening, bent a hose with fuel to stop the engine .. But almost I did not lose my life, because as the engine already sucked almost all the fuel, it suddenly turned into ok about 10,000 rpm And then I learned that the engine sucked in a lot more air than I thought and it would result from "natural aspirated". A short BuW engine with a cylinder capacity of 500 ccm has a fuel nozzle of the same carburettor 135 (1.35 mm) and my engine should start working perfectly only on the nozzle ... 80 (0.80 mm). so the air flow through the gas pipe had to be much older, because the cross-section of the nozzle goes with the second one ... or 135sqrt = 1.82 mm square, in the ratio 80 sqrt = 0, 64 mm square .. This is exactly 3 times less, i.e. the amount of flowing air also had to be about 3 times greater ... that is, more or less as much as 3 silent BMWs sucked up with a capacity of 1500 cc in total. i.e. my ilnik, two-cylinder sucks about 3,000 cm, having a base capacity of 600 ccm .. And thanks to the fact that nothing happened and survived because I was standing just near the engine, I learned that, "aspire aspartet" is no longer "naturally" . and that's why I'm bothering you ... They started wondering why this is so ... but it did not seem strange to me anymore how the 60mm tube hole opens to the cylinder and has 360 degrees of crankshaft opening .. Wredy can really work gasodynamic phenomena, causing real recharging of the engine, without any losses, as it is in the classic engine ..
The one that I'm sorry for, I turn my head, but I feel in duty, to tell you, from the current engines, there is a lot of imperfection ... no matter where your heart lies ...