Recent content by rethunk

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    Non-condensing steam recovery from exhaust gas?

    Cyclonic separators can be used to collect water in after-treatment when hydrocarbons are burnt, but (for one thing) this expends energy in cooling the walls of the cyclone. Is there a means to, say, use a similar effect of centrifugal force to concentrate the water molecules near the outer...
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    Automotive Some ideas for a CO2 emission reduction device to be attached to cars

    Some questions: 1. where's the energy to compress the CO2 come from? As not much of anything will be adsorbed by simply passing the exhaust through (activated) carbon. 2. how much charcoal will you need to store a useful amount of CO2? And how much will room does it need/how much does it...
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    Maximize Your Engine's Power with Improved Air Intake Surface Area

    A related question: How quickly does your nice cool air start warming up when it comes into contact with the interior of the cylinder? Is there enough time before the inlet valve closes for air heating up as it's sucked into the cylinder to expand and offset the vacuum towards the bottom of the...
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    What is the truth behind The Secret Life of Chaos?

    Yes. It was a good introduction to Chaos theory - and the depth of the ideas do take a bit of getting used to. I first watched it on the BBC - it must be repeated or on another network, as that was some months ago - I had a populist book on chaos (I think tey even mention it in the programme)...
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    News Is Fox News Fair and Balanced ? (different than last poll)

    Why would anyone even include: "Unbalanced unlike most news programs, and I watch Fox News regularly" on the poll? No one's going to tick that except to be perverse!
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    News Should the world be subject to US law?

    That does sound a step too far, if true. But you've also got to ask who the personnel, local security or whoever are who would pass this stuff on in the first place. If wikileaks weren't doing this would these people still get exposed on the internet or however? (I'm not saying that makes it...
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    News Should the world be subject to US law?

    Has anyone stopped to ask whether the 'leaks' really constitute an increased risk to troops, undercover personnel, etc? From BBC news website, "Daniel Ellsberg, the former military analyst who in 1971 released the Pentagon Papers which detailed government lies and cover-ups in the Vietnam War...
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    Is Crower's Six-Stroke Engine a Practical Solution for Improved Efficiency?

    Sorry to re-animate this old thread, but any idea how much extra work the steam cycle would add? A previous poster has suggested not a lot and this was my gut feeling when I googled it, but can we throw together any rough figures for it?
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    Four-stroke 'Crower' Otto/steam engine

    I imagine most of you know of the 6-stroke Crower engine. By adding a 2 more cycles when steam is injected, it is attempting to recover mechanical work from waste heat from cylinder walls and crown. One of supposed advantages of it is it doesn't need block cooling due to the steam cycle taking...
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    Calculating Power Generated by DC Generator for 6V Battery

    P = V^2/R If the generator gives the impedance you can plug the numbers.
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    Devices that can inject air-fuel mixture into the combustion chamber

    Is this of any relevance? http://ranwhenparked.blogspot.com/2009/09/what-lies-beneath-honda-cvcc.html
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    Viability of Heat Pipe technology in Internal Combustion Engine Cooling

    Yes that is a heatpipe. Here's a slightly longer explanation: http://www.ashonbikes.com/content/moto-guzzi-concept-heat-pipes"
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    Relationship between intake air temp and NOx formation

    Thanks again, Brewnog. I appreciate your patience and sorry if I've made you repeat yourself a little. If using Natural Gas can some of these low temp issues be avoided?
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    Viability of Heat Pipe technology in Internal Combustion Engine Cooling

    Use heatpipes for Block cooling not exhaust Hi. The OP seemed to have got the wrong end of the stick on cooling the exhaust with heat pipes, but I have recently wondered whether the liquid coolant of an engine (that has the advantage over air cooling to even out the cylinder's outer wall...
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    Relationship between intake air temp and NOx formation

    So holding down peak cylinder temperatures is key to retarding NOx formation, I understand that. Surely the incoming air temperature (if the volume of air is unchanged) is quite key to what these peak temps can reach (?). I'm sure there are other factors even a 14.7:1 ratio, like the quality...
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