Experimental Rotary Engines: Model 32
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This follow-up to my previous videos summarizes the current design for the benefit of those that are experimenting with Model 30 based engines. Model 32 is not yet finished but most of the mechanics are in place. It's been dry run & tested for compression, friction & wear. Performance so far is superior to Model 30. Completing the control electronics & firmware will require more time.Model 32 is similar to Model 30 (previous videos) except that: the rotors are steel lined with graphite; the vanes pivot (rather than slide); vane engagement is electronically controlled; seals, accuracy & fit are improved; parts count & reciprocating masses are reduced; rotor phase angle is adjustable to provide expansion ratios approaching 30:1; compression ratios are adequate for burning vegetable/diesel oil using direct fuel injection; the Lexan cover is replaced by a dimensionally more stable aluminum reinforced plate glass. Fins will be routed into the exterior body as needed for cooling. I should finish evaluating Model 32 by fall '07. The next design (Model 33) inherits much from Model 32, except that it uses 1 rotor & 2 vanes.The purpose of this open source program is to develop more fuel efficient ICE's capable of operating on a variety of fuels for the benefit of our environment, our economy & our future. This material is offered freely in the hope that it may be useful & inspiring to tinkerers world-wide wishing to improve Internal Combustion Engine technology. -Dave
Channel: Autos & Vehicles
Uploaded: December 31, 1969 at 5:59 pm
Author: RotaryICEman
Length: 04:02
Rating: 4.73
Views: 151874
Tags: alternative biodiesel combustion efficient energy engine ethanol fuel gasoline graphite hybrid hydrogen internal oil
Video Comments
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nwapracy (December 31, 1969 at 5:59 pm)
hello.i think what testacorsa150 means instead of original apex seals, having a part in place of them that can rotate arond the housing instead of scraping it.they would be rolling around the housing.
RotaryICEman (December 31, 1969 at 5:59 pm)
I can't say that I understand your concept. But it seems to me that almost avery imaginable design has already been tried by somebody.
RotaryICEman (December 31, 1969 at 5:59 pm)
These are experimental devices, so yes, they are definitily "high maintenance" at the moment. I've experienced broken springs, vanes, seals, excessive wear, engine lock-ups, bearing failure due to excessive preload, etc. Once all the bugs are worked out, I expect them to be lower maintenance, and much more reliable than conventional designs because they're so much simpler.
testacorsa150 (December 31, 1969 at 5:59 pm)
Hey.Nice little engine.The rotary engine always seem to have a problem ragarding scrapers. Has any one ever tried a turning scraper instead? I mean a small whell of some graphite material with two bearings spinning on a axle on the "piston" itself.Hope this makes sence :-)
kona181 (December 31, 1969 at 5:59 pm)
do thy require a lot of maintenance to run?
RotaryICEman (December 31, 1969 at 5:59 pm)
Their displacement is about 10CCs & they can deliver over 1 horsepower when they're run with (oil enriched) 2=stroke fuel. The oil in the fuel easily plugs up any seal leaks which increases compression & performance. However, operation with 2-stroke fuel is impractical because of environmental issues. Its use is being outlawed in many municipalities. I have not yet been able to achieve optimum performance levels using dry, graphite seals, but I'm working on it.
kona181 (December 31, 1969 at 5:59 pm)
what kind of power do these put out?
DevilmanTNT (December 31, 1969 at 5:59 pm)
Glad to know that there are people out there that use their skills to help benefit their fellow man, instead of benefiting their pockets. There needs to be more people in the world like you, it would be a better place for it. 5 stars and kudos, man!
RotaryICEman (December 31, 1969 at 5:59 pm)
I get lots of questions regarding fuels. Hydrogen works just fine. Basically, almost anything combustible can be made to work with this ICE. I've tried many common fuels, but I prefer Propane because it's clean, affordable & available everywhere. Also, it doesn't leave any residues like Diesel, & vegetable oils do. Keep in mind that this design operates completely dry, free of any oils, or other lubricants.
RotaryICEman (December 31, 1969 at 5:59 pm)
The seal material & style is the biggest remaining issue. These are R&D experiments & I don't know of anyone that has used them in a real world application, so durability data is lacking. The graphite seals operate without any oil, so wear is a big problem. Most people use metal instead of graphite seals, but that forces them to have to run on 2-stroke fuel which is an environmental dead end. I'm focusing on graphite seals with a metal & ceramic body. |