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Xtrema
04-27-2006, 11:40 AM
Next revolution in engine design?

http://www.leftlanenews.com/2006/04/24/massive-yet-tiny-engine-promises-big-things/#more-2463


At 150lbs, the basic ME design needs only to produce 3,000 hp from 848 cubic inches to produce a 20 to 1 power to weight ratio


Idea is similar to rotary but it seem to be more industrial than commerical but think of how small the engine bay could be and how much less weight a car may have to carry to archieve 50/50.

http://www.angellabsllc.com/images/Engine_Comparison.jpg

www.angellabsllc.com

Honda_002
04-27-2006, 11:48 AM
crrrazy!

Darkane
04-27-2006, 11:55 AM
WHat no V-attack? Man...... :D

Primer_Drift
04-27-2006, 01:34 PM
Where can I get one for my civic?

EstoMax
04-27-2006, 08:27 PM
wow.. that is like.. rotary+piston

hopefully this is the next big thing to save gas and go fast :burnout:

Vagabond142
04-27-2006, 08:51 PM
that is so tremendously geeky cool :D

b_t
04-27-2006, 09:09 PM
yaaay all the problems of a piston engine AND a rotary engine rolled into one!

crazydriver
04-27-2006, 10:00 PM
hmmm... it looks promising

legendboy
04-28-2006, 08:20 AM
neato

Xtrema
04-28-2006, 08:38 AM
Originally posted by EstoMax
wow.. that is like.. rotary+piston

hopefully this is the next big thing to save gas and go fast :burnout:

The only gas saving is the reduction of weight. It still work like a 32cylinder engine and will suck up gas as such.

CryoCarnage
04-28-2006, 09:44 AM
does anyone else see the problem ofthe pistosn hittign each other?

gofastmerc
04-28-2006, 02:26 PM
Is there a vid of thing running?

I looked but I can't see one. :dunno:

Very cool idea.

Zero102
04-28-2006, 04:23 PM
What?... How are the pistons connected to the crankshaft?

This sounds a little too good to be true.
There is no way an engine that size can cool itself, without an extremely high flow water pump. Something like that will never be air cooled.
The heat that producing 3000HP generates.... Look at the size of the rads in semi's, and they don't produce that much power.
Then again, a little 200 or 300hp version.... :D

Supa Dexta
04-28-2006, 04:52 PM
Thats all semi's are are a few hundred hp.. Some guy's juice them up to 500-700hp.. And they haul around 80-100k lbs...

vadeit
04-28-2006, 05:10 PM
Originally posted by Supa Dexta
Thats all semi's are are a few hundred hp.. Some guy's juice them up to 500-700hp.. And they haul around 80-100k lbs...

Around 400-500 HP, but.......like +1500 ft/lbs of torque. They don't want HP, it is torque that pulls loads.

snowcatxx87
04-28-2006, 10:08 PM
Originally posted by vadeit


Around 400-500 HP, but.......like +1500 ft/lbs of torque. They don't want HP, it is torque that pulls loads.

Yep, talk to the guys with the peterbuilts.


Very interesting indeed - cant wait to see if this actually becomes a reality.

frostyda9
04-28-2006, 10:33 PM
Originally posted by Zero102
What?... How are the pistons connected to the crankshaft?



And how does the piston rotate in unison with the crank, yet stop and remain stationary while the next piston compresses the A/F against it, then continue to rotate again afterwards? :dunno:

I watched it over and over and I don't get how you could do this without two moving tracks at the piston/crank interface driven off different gears. If you did that, you'd have a tiny clearance gap in the rotating assembly in the combustion chamber, and you'd get blow-by.

Maybe someone else can explain it to me, because I'm lost for ideas

Zero102
04-29-2006, 12:24 AM
There is no clear method of how the crankshaft is connected to the pistons, perhaps that is the big secret here.
You know what they say, if it sounds too good to be true, it probably is.
Watch their dumb animation of how it works. Watch their comparisons.....
They start off by saying that their motor has the power of 4 V8's, weighing 600lbs each, making 350HP.
Then they say that their motor makes 2000HP.
350 * 4 = 2000?.....

Later, they give the hypothetic 350ci V8 350HP, and then assign this 600lb engine a 1:1 power to weight ratio.... just what units of power and what units of weight?....
So, 350HP to 600lbs = 1:1
Yet.... 2000HP to 150lbs = 100:1!!!!!!
Where the hell did these guys learn to do math?
Even if you use their figures from before, 4x the power, and 1/4 the weight you only get 16:1!

They show some animations of it working, and a short clip from the LA auto show, but it just doesn't add up.

They give 'dyno' numbers from using compressed air as a power source, pressurizing to 150psi, and making 800lb/ft of torque. BUT, they only rev it up to 868RPM. Sure that is a lot of torque, but at 900RPM that isn't very useful. Not to mention it's 850CI, so you can imagine how the fuel consumption is.
Yes I understand peak cylinder pressure in an internal combustion engine can reach 1800+psi, but still, if they are giving it a 900RPM redline, I don't know what to make of it.

They need to make a small, running version to prove this is practical. I'm sorry, but 850CI 2000HP engines will just never be practical with gas at $1+/L.
Their little animation video is such an egotistical brain washing load of crap.
It reminds me of when a guy I work with was telling me about his free energy machine, and how it was based on something called a torque multiplier.... give me a freaking break.

Neat idea, but these guys seriously need to have their morning coffee before they put together any of these videos, or their web page, because the information they are providing seriously sucks.

Zero102
04-29-2006, 12:30 AM
After looking at it closer, it would appear that the crankshaft is connected to one set of 4 pistons, and that the other set of 4 is just loose between them?... Or perhaps connected to another 'camshaft', which controls the angular seperation between the piston sets.
Either way, they proclaim over and over that it is not a rotary, or a wankel engine.
Of course it is not a true rotary engine, since those are conventional ICE engines, but it bears a remarkable similarity to a wankel. They have replaced the long-troublesome apex seals with pistons and rings, but the mechanics of it all seems quite similar. No intake or exhaust valves, just ports. Where a wankel has one spark plug per rotor (or a pair), this has 2. The same idea could be produced by a rotary engine with 6 'chambers', except that the double-edged rotary would have 2 extra 'chambers' compared to their MYT engine.
I don't see how they dismiss it as not being at all similar to a wankel engine when they are so fundamentally similar.

They claim it is simpler and has less moving parts than an internal combustion engine.... let me add this up.
An ICE push-rod V8 engine has....
8 pistons
8 rods
1 crankshaft
1 camshaft
16 rockers and valves
Their engine has.....
8 pistons
1 crankshaft
8 magically non-existant piston-crankshaft connectors (hmm... these sound kind of like rods)
1 angular speration controller - which looks like it has 4 variable length rods, which makes at least 8 moving parts.
So, at the expense of 16 well-proven successful rockers and valves, they provide snake oil, and a little bit of magic.
My, that is much simpler.

If this engine makes it into mass production, I will eat my hat.

snowcatxx87
04-29-2006, 01:41 PM
good analysis dude.