A work of pure genius! - Brilliant "Revetec" Engine

[Kozy]

Originally Posted by hightower99

Are you talking about this:

Calculating and Comparing the Output Power and the Indicated Power of a Simple IC Engine

Not really... this is what I was on about.

http://www.vehicular.isy.liu.se/Publ...EX_3569_MH.pdf

I'm not saying I have read this, but it seems to be along the lines of what I was on about. You are looking at things from a very very basic perspective as far as I can asscertain.

[revetec]

Good pdf, although averaging an IMEP figure and using it as a constant force over the cycle is not accurate. This is not what happens. It's ok for a rough calculation aimed at only a conventional engine. To accurately perform the calculation you need a 3D pressure plot of the combustion chamber and match it to the device you are testing. An average IMEP only tests the efficiency of the device to transfer torque per degree, not the actual force achieved under a variance of peak pressure points. It's like saying we are going to plot the actual pressure plot over the devices average torque lever. Not accurate in the real world at all.

It was a good read though. It would have been nice to see them do the whole analysis and calculations using an actual 3D IMEP plot with variations in speed and load. Now that would have been an awesome read!

[GTM]

Hi Kozy,

The 3D model is a good achievement. Good luck with your final year project.

The Revetec technology is amazing and a credit to Brad's vision and hardwork. His knowledge on IC engines is unbelievable, if Brad offered a course on IC I'm sure it would be standing room only! Brad is easy to talk to and is very open as long as you are not a 'know it all' (no one can help these people so he doesn't waste his time).

I am a strong believer, supporter and advocate of the Revetec engine and look forward to when more development samples can be provided to more groups for development and testing. Revetec continues to win over supporters left, right and centre.

[revetec]

Awwww...shucks....Shane.



Well I was asked and have presented a seminar at AutoMechanica which was attended by several car manufacturers.

[revetec]

Originally Posted by hightower99

With the recent discovery (on my part) of a few new technologies I have decided that I will be making a prototype with a few of them changed with a few adjustments and changes from my own ideas.

My very basic idea is that the motor will be a 1000cc displacement inline 4.
crankshaft will be replaced by counter rotating cams ala REVETEC but they will have only 2 lobes 180 degrees from each other and there is a lip added to the high points to keep the piston from going to high.
it will run on basic 2 stroke diesel mode with ports in the cylinder wall for intake and 2 coates rotary valves for exaust at the top. I plan to make it a short stroke and wide bore dimensions. I want to make it a 4 throw system. direct injection by a constant pressure mechanical system. I hope that this combination will give me a high reving (6-7000 RPM) diesel motor with healthy HP ratings. For intake I hope to use a small turbo for lag free pickup from idle and then switch to a larger turbo after 3800RPM all the way to redline!!!

I am just wondering what you guys think and if anyone has some helpfull tips or ideas.

I'm speechless to say the least!

[3yearsharehold]

HI Kozy

Your CAD drawings are great , A Chinese man invented this motor 50 + years ago (Revetec = counter rotating try lobe cams) although your other drawing dos have a black line down the centre of lobes!
It also looks much better , you should of posted that one
Did you draw the car frame with block inserted as well?

HT
Is this the motor your building, is it for a bike? So you like the Coates Rotary Valves system.

Revetec

Please contact Eden Energy as your motor would suit Hythane® + hydrogen applications!
Look into it and get the edge!
I reckon Hythane® is the future fuel for at least 50 years as we will run out of natural gas to blend with , eden will increase Hydrogen amount as safety and costs of Hydrogen production + engines coupe with . This is one of the reasons I invested in RVC + on GTM's web site you clamed to produce over 100 nm from your 450cc I am not implying you didn't maybe you did but it wasn't stable (reliable design)

PS JL must be exited of the thought 30+% more miles before refilling his Cessna!

[revetec]

3yearsharehold: We produced over 85Nm@1,800rpm, it was off the trilobe shaft as that engine was designed at the time. Our new designs are more practical for automotive rev ranges, and that engine suited a generator type application.

I checked out the website. If they get it to market and have a decent distribution network, then it might be worth investigating. No use developing an engine on fuel you can't readily acquire as yet.

[GTM]

Hi 3 Year shareholder,

The 450cc engine propelled the same trike (as the current model) to around 50km/h which was outstanding for a 450cc engine (this size engine is used to power ATV's etc). Because the CCE450 powered straight off the trilobe shaft (and not stepped down as X4) we were limited to about 2,500 rpm (with current 3:1 ratio it would be 7,500rpm output). As a result the engine powerd through each gear in less than 2 seconds. It took longer to operate the clutch and change gear then to accelerate.

The CCE450 was a good engine, I drove it in Sydney and Shanghai. If the engine had a stepped down shaft like the 450cc I seriously believe it would have been able to reach greater speeds than 50km/h. As far as a reliable design, we considered this engine as a prototype to prove the Revetec technology, in that respect it achieved this (it was demonstrated to several companies from China, Iran and India all gave a favourable response).

With regards to the Chinese inventor of the counter-rotating trilobes this is a small world. Our associate in China showed us an article about the Revetec engine in a Chinese magazine. Many people in the China auto industry are aware of the counter-rotating trilobe technology and I think once the certified test results come in the next phase will begin.

China is a unique market in that there is over 70+ car manufacturers and many of these manufacturers will buy engines from other engine manufacturers (rather than develop their own). I believe these are the manufacturers that will embrace the Revetec engines for their production.

[3yearsharehold]

I hope your still working on that as Delhi has daily black outs and relies on generators and as I said Hythane® is on the boil , its rated as safe to store as natural gas up to 25 % hydrogen
They have COH and could afford the research , if you look closer you will see they have,

" received a $499,800 grant to acquire 14 shuttle buses for operations out of the San Francisco International Airport. The shuttles will run on Eden Energy's patented Hythane® fuel (a blend of 20% hydrogen and 80% natural gas)." ITS happening faster than some think!

"The Hythane® fuelled shuttle buses are expected to reduce nitrous oxides by 56%, non methane hydrocarbons by 30% and carbon dioxide by 40% over the existing versions. The Hythane® model is also expected to emit 30% less hydrocarbons and 20% less carbon dioxide than the existing shuttle buses."

This is also the reason the Indian Gov is splashing out with the higher cost of producing hydrogen for Eden as the above cause cancer!

GTM
You missed my point,although I can now see why rvc are carfull of whats disclosed in to public postings!

[Kozy]

Originally Posted by 3yearsharehold

HI Kozy

Your CAD drawings are great , A Chinese man invented this motor 50 + years ago (Revetec = counter rotating try lobe cams) although your other drawing dos have a black line down the centre of lobes!
It also looks much better , you should of posted that one
Did you draw the car frame with block inserted as well?

Which drawing are you on about there?

Yes I did draw the car frame and block, they form two modules of my university course, the engine is a two module course and is more involved than the chassis, which is a single module. I use both to gain more knowledgle in engine and chassis design than my course could teach me.

[revetec]

For any of you who haven't seen our test day videos, here is a good one on YouTube Revetec X4v2 GTM trike Wheelies

And a video I put together of the Evolution of the Revetec Engine

[GTM]

no problem 3yrs s/h, I don't know that much about hydrogen or hythane so I didn't comment. But I do know about the CCE450 engine, the performance and design (pros and cons for our application).

[hightower99]

Originally Posted by 3yearsharehold

HT
Is this the motor your building, is it for a bike? So you like the Coates Rotary Valves system.

No I am not building the quoted engine.

Yes I like the CSRV system but it is going to be hard for them to make it mainstream.

[3yearsharehold]

I wasnt talking about Kozies motor, I was talking about the one you are apparently designing, and have mentioned on the threads
Why can you no longer walk on the sands of Suidi Arabia and get oil to push through your toes ?...they're drilling every depth at different angles, and guess what there finding F.A more.
The RVC engine is well suited to hydrogen fuels & you can see it wouldn't be hard for the average meachanic to adapt to. I would say it's easier to pull apart , I doubt the rings will wear out in a hurry. India & China will acount for 50% of the world population soon. India being the bigger , they have one thing missing...their own great engine!
Anyone can reverse engineer :-) , as long as you don't want to trade with any other country.

[hightower99]

Originally Posted by 3yearsharehold

I wasnt talking about Kozies motor, I was talking about the one you are apparently designing, and have mentioned on the threads

I am not building the engine that was quoted (the 1000cc I4 diesel revetec CRSV engine). I am in the process of developing my own original design that has no relation to revetec technology at all (except for the fact that they are both internal combustion engines).