Recent content by NTL2009

So allow me to move this away from whether or not the original 100 mpg claim has merit or not (since it seems clear that it doesn't), and phrase it a different way (which is more along my original intent anyway, but I guess I worded it poorly): Could vaporizing (versus atomizing) the fuel at...

A few years back, I was at a local 'Farm & Heritage' type show, and a number of presenters had these hit-and-miss stationary engines. I'd seen them before, and just figured they ran really poorly at low speeds! I talked to one guy, and he explained it to me, and put on a power belt and loaded it...

OK, so I took that and worked backwards from 40 mph (some searching says that rolling resistance and wind resistance ~ equal at that speed), and I found some support for less than (how much less?) 20 HP at that speed, for a typical mid-sized car (probably better tan a 1970 Galaxy though). That...

I think you are missing the point of my post. I don't care if it happened or not, that's not my focus. I'm interested in "driving for answers"'s analysis. The idea that it is at least feasible that a large V8 could approach 100mpg with vaporized fuel (or not) is something I find interesting...

Another viewpoint on my ~2.7 throttle ratio between vaporized and atomized fuel: Say the 'normal' engine RPM at cruise is 1800. The vapor engine would need 2.7x more fuel/air. That would take 2.7x the RPM (well, I'm not sure how the throttle plays into it - but ignoring that for now), which...

Yes, this is what the author of that youtube video seems to think as well. That it is possible to do, but with very poor performance. I think all cylinders were needed, just to get enough fuel into the engine to even reach cruising speeds. I was meaning to do some math - how much vaporized fuel...

Of course (also a boomer, if that matters?), and if that's all there was to this, I would not have posted it to this forum. The reason I found it interesting is, the youtuber I link says that he does think it was possible, he says the math works. But with caveats (see next post)... edit to add...

But the vaporization would occur right at the cylinder intake, so really no different from avoiding vapor lock in fuel injected engines today. You keep the fuel liquid up to the injector that would inject fuel onto the hot-plate.

Here's a video by “driving 4 answers” who seems to me to be well versed on the details of Internal Combustion engines. The video does cover something that's a bit shrouded in 'conspiracy theory', and he touches on that, but of course for phys.org, I'm only interested in the actual science...

Any modification that you do to a sine wave will produce some added frequency content. Depending how you do it, it could be harmonic (whole number multiple of the sine wave), or in-harmonic (some fractional multiple). Also, your comment: is not really true. A drum hit does contain a lot of...

I couldn't really follow what was being described there. It's tough to comment w/o the actual waveform files, and how they were constructed, and descriptions of what was expected and unexpected upon listening to them.

I don't know. The 'individual clicks' looks like a single cycle of a sawtooth every ~ .7 seconds, but some look a little different. Not sure what you mean by 'after product'? Are you listening with headphones? If not, things in the room can resonate, creating an 'after tone'. I was doing some...

I couldn't get to the linked media, so I'm not sure what is being played. I just hear 11 'thumps'. If those are ~ 1 Hz sawtooth waves, then I'd expect to hear a noise burst ("thump") at one second intervals, as the steep slope will create a lot of high frequency energy. The gentle ramp would...

By 'carefully constructed', I just meant that the increasing time of 10 samples between each of the two pulses that make up each 'note'. When it comes to signals like this, I don't think 'pitch' is so well defined, it's a perception thing to hear a pitch in something that is maybe better...

I sort of hear a descending pitch, but these are rather 'pitch-less' noise bursts, so it's not clear to my not so well trained ear. I hear 5 equally spaced 'blips' and the 6th comes in half the time (like 4 pizzicato notes with quarter note rests between, followed by 2 pizzicato notes with an...