Recent content by azmio

timethereaper, At the same time, the op also mentioned that he wants it hot because the exhaust gas need be treated by the catalytic converter. Catalyst will still work with large amount of water in the exhaust gas stream. I also wrote that a better way will be to treat it first before...

there shouldn't be complicated structure integrated to the exhaust pipe. It will self destruct during 1000 hours WOT durability test. The heat exchanger should be integrated to the end portion of the exhaust pipe. In particulate, the tailpipe outlet should be placed as high as possible to make...

You can get enough co by injecting rich upstream. Still if you have lots of nitrogen in the exhaust stream the conversion efficiency will drop. Frankly, just cool off the exhaust gas stream after the catalyst is a much simpler option. I have published papers on this

Mark for water to be converted to H2, you will need a lot of energy. Exothermic reaction at the catalytic converter is far from enough or it will sinter the precious metal the the monolith. Bear in mind also, in a complete combustion, water is just a small percentage if compared to the CO2 and...

Right after the catalytic converter, the exhaust gas temperature drops significantly even if there is still some exothermic reaction from CO and HC oxidation. Once the exhaust gas passes the catalytic converter, you can use a low temperature heat exchanger to bring the exhaust gas below 100C...

Hi Jordan, Your idea is very interesting. This makes us shares the same belief in how a future combustion should be. The flame from the oxygen combustion is really hot and you need to cool the entire combustion volume ASAP the moment charge ignition starts. Failing to cool it will melt your...

hey guys, One thing that i have been noticing is that US and China worry so much about securing energy sources. Contrary to that, Germany and Japan focus more on getting more work output from lesser energy inputs. I don't recall hearing any country that synergizes both. As energy...

Sophie, You're right, oxygen generation is significant in terms of energy balance. That's why in my paper, i stated that we should use pressure swing adsorption in which the power consumption is quite low for every kg of oxygen produced. In my paper, I also stated that the benefits of...

Chriss, I had a choice to run the engine in HCCI but i chose to run it not with homogeneous combustion. I spent the first decade of my career designing SI engines but I realized that homogeneous combustion is not the way to go. The knocking and incomplete combustion are the major issues...

Chris, I wrote 2 papers which got published by SAE; #2009-01-2808 and 2009-32-0047. If you have time, you can purchase online. I practically use oxygen to replace air in order to get the best heat release and emissions. I also replace air with water to get the best heat absorption, gas...

Russ, Thanks a lot. the best part about having water injection is that water having far higher specific heat capacity in both liquid and gaseous state absorbs the combustion heat better than nitrogen or carbon dioxide. Once water is in vapor form, it has higher gas constant R thus it expands...

Hey guys, I need to get some feedbacks from all of you here. Do you guys think it is possible for an engine to have a very low exhaust gas temperature and does not need any coolant radiator? The aim is simple, with lesser heat rejected through exhaust gas and radiator, there will be more...