The Adaptive Autoignition Engine is a real contender at 60% cut in fuel consumption.

[Gaz.Guzzle]

The Adaptive Autoignition Engine is a real contender at 60% cut in fuel consumption. I found this engine on the web and have since found out that it has some chance of succeeding as third gen engine. It certainly is radical not by shape but by how it functions. I became interested in the global warming issue when it was pointed out to me that since I use about 50 litres (about 13 US gallons) of fuel every week, traveling to work every day, 2-3 trips to the supermarket, over to see friends on the weekend etc. I will produce about 70,000 tons of the greenhouse gas (CO2 ) every ten years. This is just me, one Australian dude with a modest limo. If the developers have got it right or get it right then it must be seen as a great leap forward. The ICEs will need this scale of advance to survive one would think. I notice this forum discusses engines a bit. What’s your take on this thing? Anyone!
Gaz.

The address to this engine is http://www.iddpl.com.au

This is a correction:In the previous paragraph I wrote "70,000 tons", it should read "70,000 kilograms" which is 70 tons. As a reference point in using this ammount fuel, CO2 about equal to the weight of the car is produced every 2 months.

[2ndclasscitizen]

Do you have a link or some actual technical info?

[brandisher]

We need to see some sources to back up what you are talking about

[aiasib]

....."modest limo?"

[Matra et Alpine]

http://www.iddpl.com.au/HtmlFiles/HCCI.htm

It's another Aussie What the hell you guys been doin down there

[drakkie]

Originally Posted by Matra et Alpine

http://www.iddpl.com.au/HtmlFiles/HCCI.htm

It's another Aussie What the hell you guys been doin down there

It seems the missus down under are a bit more forgiving to us than here mate

[revetec]

The Adaptive Autoignition Engine Prototype



Will this fit under your car bonnet?

[kingofthering]

Good luck fitting that into a Honda Civic.

[BradG]

First, I admit I only scanned the article but my impressions are these:

It looks complicated, more stuff to break,
There seem to be a lot more places for fuel to "hide" causing more hydrocarbon emmissions,
It seems a harder way to do things we can already do (to some extent). What I mean is there are several engines out now in production cars that are gasoline direct injection. This allows there to be a locally stociometric mixture around the spark plug which will ignite. So, the entire cylinder is very lean. The effect of variable compression can be somewhat seen when combined with a turbocharger, again it's not as controlled but the effect is there. Also, with gasoline direct injection, turbocharging systems have a lot more potiential because the fuel injectors can inject high pressure fuel into the cylinder at a lower pressure causing a cooling effect from the pressure drop of the fuel and allowing higher boost levels as a result.

[Gaz.Guzzle]

Hi the forum. There is no need to be aggrieved by someone postulating how an internal combustion engine may be forced to run at more efficient thermodynamic parameters and then testing to find out if it can be achieved or not. I spoke with an engineering lecturer regarding this engine and he said that if these people can succeed in what they are trying to do the world will have a new type of engine. A very efficient one at that. It is not an SI, diesel or gasoline direct injection (GDI) engine.

Now as I understand it, they say always run the engine as close to full air as is possible to achieve the required load. The thermodynamic parameters required to achieve this will cut fuel consumption by 30% around town. They also say that since the engine has varying compression ratio to control changing loads then use this facility to boost up to 4 bar during maximum loads. Such a high boost would allow an engine of about 1/3 the size to deliver the same maximum power at the same revs. In the urban environment the saving in friction fuel consumption remains in the fuel tank resulting another 30% cut in consumption.

As for the image of the prototype a very interesting fact is evidenced in that image. Air, CO2 and gas in general has not got a preference for a compressor or expander shape. Therefore for these experiments use a reciprocating piston compressor and expander since they are easy to get hold of. They say in the engine website that this is a prototype and that a production engine would occupy the same space as a similar capacity SI or diesel engine.

If they succeed great if they fail too bad but one thing is for certain, the engine will be tested.

By the way, am I allowed to place a website address to this engine under the forum rules?

Cheers. Gaz.

[Rockefella]

Originally Posted by Gaz.Guzzle

Hi the forum. There is no need to be aggrieved by someone postulating how an internal combustion engine may be forced to run at more efficient thermodynamic parameters and then testing to find out if it can be achieved or not. I spoke with an engineering lecturer regarding this engine and he said that if these people can succeed in what they are trying to do the world will have a new type of engine. A very efficient one at that. It is not an SI, diesel or gasoline direct injection (GDI) engine.

Now as I understand it, they say always run the engine as close to full air as is possible to achieve the required load. The thermodynamic parameters required to achieve this will cut fuel consumption by 30% around town. They also say that since the engine has varying compression ratio to control changing loads then use this facility to boost up to 4 bar during maximum loads. Such a high boost would allow an engine of about 1/3 the size to deliver the same maximum power at the same revs. In the urban environment the saving in friction fuel consumption remains in the fuel tank resulting another 30% cut in consumption.

As for the image of the prototype a very interesting fact is evidenced in that image. Air, CO2 and gas in general has not got a preference for a compressor or expander shape. Therefore for these experiments use a reciprocating piston compressor and expander since they are easy to get hold of. They say in the engine website that this is a prototype and that a production engine would occupy the same space as a similar capacity SI or diesel engine.

If they succeed great if they fail too bad but one thing is for certain, the engine will be tested.

By the way, am I allowed to place a website address to this engine under the forum rules?

Cheers. Gaz.

Depends.. if your intent in posting such a link is to advertise the engine or a certain product, the answer would be no. As long as you are not shamelessly plugging something or blatantly linking people to a website to gain coverage, it's generally o.k.

[revetec]

I have a question about links.

I have posted links to our own website but the intent was information to your members only. We are not selling anything to anyone, we are not looking for investment etc. I hope I can continue to do so, as I only paste a link if I think the members would like to see it, such as our new engine running. I thought your members would like to see it running. Please tell me anytime if you think my posts are anything but that. Most of my links though are to "Photobucket" and don't link to our website.

I have asked this now, prior to any comments or warnings, because I love the discussion on here and want to continue my involvement as I have been quite active on many topics, related or unrelated to our technology.

[Rockefella]

Originally Posted by revetec

I have a question about links.

I have posted links to our own website but the intent was information to your members only. We are not selling anything to anyone, we are not looking for investment etc. I hope I can continue to do so, as I only paste a link if I think the members would like to see it, such as our new engine running. I thought your members would like to see it running. Please tell me anytime if you think my posts are anything but that. Most of my links though are to "Photobucket" and don't link to our website.

I have asked this now, prior to any comments or warnings, because I love the discussion on here and want to continue my involvement as I have been quite active on many topics, related or unrelated to our technology.

As long as you're not blatantly advertising it, which you haven't. You're ok.. as far as I see it anyway.

[revetec]

Cool!

[Matra et Alpine]

Originally Posted by revetec

Cool!

Definately. A win-win for us

You've never "pushed" your web site, always answered questions raised her with as much detail as most can manage !

We all know the "others" who don't and you don't need to worry about getting that treatment.

( Unless you switch modes and try to see us shares )

Given the choice, I'd prefer to see pics as UCP attachments as it means they remain for as long as the thread. But, any of hte photo sites are OK after that for the stuff you stick up for us.

Keep it banging -- smoothly