SUCCESOR OF WANKEL ENGINE !! | LIQUID PISTON ENGINE
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- Опубликовано: 21 авг 2024
- Hello Every one. in this video we will talking about a Succesor of the wankel engine known as Liquid Piston Engine. Hope you enjoy and don't forget to live up to the comment section bellow.. thanks...
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#wankelengine #2stroke #liquidpistonengine
Stop stressing, your English is cool. Keep up the good work.
This is a fascinating design. It looks like a pretty good design for 2 stroke applications like chainsaws and lawnmowers. Cheap to produce, light weight, it has a lot going for it. Especially as a diesel which takes advantage of the compression ratio whilst also lubricating the engine. In a larger application I do think it would need a radiator, the same way most normal engines need a radiator as power increases - more heat produced as power (and volume) is increased whilst surface area grows at a slower rate (exponent of 2/3). Still, its a cool concept which comes at a really good time. A small efficient engine to charge hybrid cars makes for a significantly lower CO2 output compared to dragging a massive weight of expensive batteries around everywhere. A turbocharger seems to defeat the point of the engine though, ruins its compression ratio, ruins its cooling, ruins its small size, ruins its cheap price, etc.
Also the English was fine. Sure there's an accent and there were a few spelling mistakes/typos but its not anywhere bad enough that people need subtitles. Anyone who skips the video is missing out for sure.
EPIC 3 Cycle Engine Concept - Charge, Combustion and Exhaust....
ruclips.net/video/4NhDaQ3SB0o/видео.html
The engine is actually supercharged in a lot of their small prototypes. A turbo may still be useful for larger, higher performance variants. I can see this engine being very successful scaled up with multiple rotors for use in sports cars and bikes. The high power to weight and efficiency makes it very appealing. Still, it will be interesting to see how the rotor handles higher temperatures, compression ratios and RPM as most of their prototypes have been small and geared for efficiency so far.
No it is not. Liquid Piston need 3 spark plugs and 3 injection pumps instead of one. Two stroke engine is simpler and cheaper.
CURVES make a difference in reducing friction. It’s nature.
It has promise, the combustion camber is better than in Wankel, being able to be better shaped at full compression but it rapidly opens to a higher surface area than in a traditional piston engine providing rapid quenching of combustion to a more extreme extent as the round cylinder engine. I'm not so sure the required oiling is the issue you think it is, I think the oil has to be introduced separately, likely wicked in, to ensure it gets to the right place and isn't combusted. 2 strokes typically run 1 part oil to 50 parts petrol in the engines with better surfaces.
If you aren't burning the oil, you need far less of it. Mixing the oil with the fuel and using fuel injection is really setting yourself up for failure because it's assuming dirty combustion with no completion. In a carburettored two-stroke, we assume this because there is poor cylinder evacuation after power stroke and the oily fue rins over crank case and then the cylinder as it mixes with exhaust remnants.
If the combustion completes, there's no oil left. I like that the seals can be contained reasonably well. Side seals rotate and the apex seals equivalents are static.
It's not true that the combustion ratio can't be easily changed. As an inventor myself, here's a full public disclosure of something that's obvious to me: The designed in combustion chanber can be a plunger in a recutangular void. Stepper motors and geared drive can operate the plungers with screw threads. Very easy stuff. A bit like the old modeller compression engines that were started with ether and had a winder to set the optimum compression ratio. So you see the idea isn't even new, it's just a different combustion chamber plunger shape and with engine smarts to set compression just below where knock-pinking would occur.
Regarding manufacture, it's quite possible. Would require some custom finishing tools to get the right arcs with dimensional accuracy but with 3D printing techniques in wax like materials and even directly into metal, the roughing stage is very easy these days. The simplicity of the engine crank case suffers a bit for multiple stage with radial breathing arangements for exhaust and induction but it's no big issue.
Also a win over the Wankel, is the housing has much more even thermal range due to the combustion being spread over 3 inner lobes of the housing. Less warping to deal with! You would not leave the intake ducting open though. People like quiet engines. All that end routing of induction and exhaust would be routed radially to allow for universal stator component stacking end to end, with 6 side manifolds to deliver filtered air and to release exhaust.to a muffler.
I was told that they inject oil to the apex seals. The rotor side seals will still need lubrication though, so it's inevitable this will be a total loss system. As such it has all the problems of two strokes with emissions and short life, plus some of the problems of the wankel engine, namely apex seals and extreme temperature gradients (in the rotor in this version). It's OK for a few niche applications where power to weight ratio is valued above engine life and emissions
@@jamesrindley6215 No. It's effectively a 4-stroke engine. Most manufacturers inject for modern vehicle engines these days so you are missing the point with fuel emissions. 2=stroke engine transfer inducted and exhausted air volumes aren't tidily separated like with this engine. They are also trying to air cool this rotor. There's an additional very practical work around to equalise rotor temperature extremes that you appear not to have considered. Not only that, but the round piston ends will experience some temperature equalisation through close proximity rotation with the stator working chamber lobes.
@@fluiditynz You're right that it's a 4 stroke cycle, but it has to be lubricated like a 2 stroke, thus it burns the lubricating oil causing pollution. I guess you're thinking of fuel injection rather than oil injection. I agree it is better than a 2 stroke in terms of separating exhaust and induction. Cool as it is, it suffers all the sealing and wear problems of the wankel and thus isn't going to be mainstream for transportation. Consider that piston engines use 2 piston rings for sealing and this has only one.
@@jamesrindley6215 Oh, I agree on the sealing. Piston engines can have a lot more than 2 rings per piston too. But unlike the Wankel engine, this one has more flexibility in the arrangement ot the apex seals, they can even be multiples like a wind screen washer blade and merely pivot, they are otherwise static which is a lot more of a challenge in a Wankel on the moving tri-lobed piston. Again, nothing stopping more than one each side of the piston either, only provisos being that they remain in place. Again there are methods to fit these. Biggest issue being to not cut off too much breathing of the engine but I don't think it's a problem with the design. There's a lot of smarts going into metalurgy that haven't always been available. Electroplatings, molybdenum, getting the right surface match, 3D printing also has been moving closer and closer to main stream and is closer to an acceptable price now for specific parts best suited to it's advantages. Ceramic pistons have long been the magic solution wished for by engine inventors, in order to thermally insulate and withstand high temperatures. There are Titanium-ceramic materials now available for laser type 3D printers that can actually produce high quality items using these materials.Like when our Kiwi inventor John Britten built his carbon fibre integrated frame/housing race winning bike with titanium decades ago, innovations don't stand still. For main stream, yes, exotic methods aren't such a good idea but they are only exotic when the manufacturing methods are rare and expensive. That is changing over time. The key to remember is that oil injection at the seals location is far less wasteful and polluting than when oil is mixed with the fuel itself. As material technologies advance many engine types previously written off are becoming viable. Some of them are quite superior to internal combustion engines. I wouldn't put the stirling engine in this category though, it's design by nature is restricted to efficiency only at low RPM.
@@fluiditynz Diesel fuled with a ovesized flywheel would make this into a perfect generator, its like a old two stroke Wichman VX engine (the main designer was my teacher in thermodynamics and steam) also two stroke Detroit Diesels
Guess the RPM due to the high compression ratio could be lowered to 50 or 60 rpm with flywheel?
Forced induction, like a traditional blower/two stroke ship engine woul increase performace almost exponential, add a vaccum pump o the exhaust side and you can use the exess heat to heat homes and water as a "split heat pump"
I agree that if seals for the Wankel can be done the same technology should be useful on the liquid piston. I have a German friend who worked for some years in a lab in Germany on development of the Wankel seals. At the time she told me the development team became concerned they would not succeed. Every time they overcame and issue, it would introduce, or make worse another. As the Masda engine proved, they did eventually archive a useful solution, after some years.
I have had another look at the film and your captions really need cleaning up.
For instance "well this" appears as wedding, "column" appears as kolum, bugil I could not work out, "music" =musik, "say this" =sadis, wankel=bengkel, so=SOHC, bisa I could not work out, jingle cover, and doang I could not work out. These are just examples from the first few minutes. I am not being personal. A second language can be hard to master. I lived in Taiwan in the 1960s and my Mandarin was terrible despite my efforts. You do acknowledge this when you suggest turning on the captions. The problem is, sometimes it is easier to understand your accented speech rather than the captions, which appear to have been done with a computer, "speech recognition" program. You should get them cleaned up. Sometimes the facts you are presenting are completely missed because the captions do not help, but confuse. Best Wishes. Kent
Liquid Piston is a very good design.
It is small, it is simple.
So it could be made into a black-box that could be easily replaced.
Say, the engine could run for x- revolutions, in say, 2 years life-span.
Fine, just pop it out and replace with a new one in ten minutes.
One can even store a spare engine in the car in case the engine fails.
Very nice engine with many possible applications, I look forward to see more about this in the future.
Part-Part was my favorite part. 😀
This seems to be a great engine for small/yard working.
The company says it can feasibly be scaled from 1-1000+ HP, so could see it in a lot of applications. Personally I’m hoping sports cars will be one of them. I’m especially hoping once they start licensing the design that Mazda starts producing them in place of the Wankel. They’ve been the only ones crazy enough to persist with the rotary but never quite got it all the way over the line, but I bet they would appreciate this technology. So excited to see what they would do with it, but alas that may just be a dream
You definitely don't need to apologize for your English. Most of us native English speakers mangle our own language. Plus the fact that the majority of us don't bother to learn a second language.
Nice presentation, Ta, very much appreciated.
I just discovered your channel. Really in formative. I appreciate your hard work to produce these videos. Your english is great, so don't worry about that. Great job! New sub!
Soo a six rotor would essentially be an 18 cylinder!!! 😮 and weigh as much as a v6.
It was difficult to understand the narrator. But I got through it with the details and and diagram video. Thanks. This looks good. Considering investing.
Wow amazing you did a great job with the graphics this is one of the engines of the future the other engine is a boxer two Pistons per cylinder opposing each other
Great video. Just the tech. explanation I was looking for. Many thanks 👍
Yes, I need an engine with some punch in my motorcycle and don't want a 300Kg machine to wrestle. This could be the solution I've been waiting for.
nice video, keep it up 💪💪💪👍👍👍
One beautiful feature of this engine is the combustion heat is spread out to 3 areas, on a Wankel it concentrated in one spot. Heat is a major enemy of engines.
If they get air in and out wear spark plugs are ,,,could use sleeve valve around entire outside of it.. no more need for premix..slightly more complex.. but gotta be smoth and efficient
It's clever, but how is it lubricated? Oil in the fuel the same as a 2 stroke? In which case it will be bad for emissions.
This is a beautiful video. I really love your animated illustrations. It would definitely benefit from a different narrator for the English version though. If you need someone to narrate videos I would be willing to audition. Really cool though. Thanks for sharing.
you english is much, much better than the auto translate! Thanks for sharing this with us
4:25 and 10:05: Eccentric Shaft; Counterweight Mass--4:47: How It Works--5:27: Eccentric Shaft--5:49: Exhaust Port--6:29: Compression--11:00: Forced Induction--11:11: Liquid Piston Engine
thank for your advice and evaluation. i really appreciate it.
Pretty thorough explanation of the basics. You never did tell us why it was called a "liquid" piston engine.
As much As I've heard it's the name of the Company that developed the engine, and the engine is a rotary engine running on a different cycle
Probably because lubrication is much easier
Mantap pak bagus kamu kasi explanasi. Good job.
Your English is great. 👍👍 Great video.
Seals will be a problem, they held back the Wankel for years and many millions in development. You should have your sub-titles reviewed. They appear to be done by computer, which listening to your accent, has invented, or wrongly used words. You do have an accent, but it was clearer listening than reading. Much of the sub-titling is useless.
I dont think the seals will be as big of an issue in this design. The apex seals of a rotary have to not only contain the pressure of combustion but also have to deal with massive centrifugal forces. This should alleviate some of that.
With the seals being stationary they should actually incorporate a method to replace them that doesn’t involve complete disassembly
The Wankel also only runs „hot“ around the spark plug area, but since the liquid piston has a more uniform spreading of combustion and heat it’ll suffer less heat warping, theoretically improving the life of the Apex Seals as they don’t have to run through a cold and then a hot area over and over. The there was the problem with resonating Apex seals on the Wankel, the seal would skip back and forth whilst damaging the rotor
I have high hopes on the Liquid Piston
@Michael Spiering i had one `80 SA2 RX-7 but (as i later fount out) it had a blown apex seal and i couldnt afford to rebuild it, sold it for parts. lost 30€ after the end but learned so much about the 12A rotary that i promised myself to own an SA2 again one day. I sat in an FB too and its way smaller inside for some reason. The RX-7 is special cause its so unike, i wouldnt have bought it if it wasnt for the Rotary
@@mistere6212 Exactly. The main issues with the seals in a wankle is really the wear, it's the fact that they're internal, requiring deep disassembly to replace them. Since these aren't on the piston, it should be possible to design a way to change them out almost like spark plugs.
An amazing concept. I wonder if having several pistons in line and minaturisation of this could be used as a compression ignition (Diesel) impellors for radio controlled 'jets'.. Castor oil/ethanol can be used as Diesel fuel.
Vroom! Nice one. 🌟👍
The efficiency of an engine is „output energy“ over „input energy“. To make it easier „input power“ is often measured in ml or gramms of fuel. It is never „engine power“ over „engine weight“, that named „power-to-weight ratio“, so very literally the calculation formula.
The engine allows higher compression ratio, which gives a better theoretical thermal efficiency, same applies to the smaller surface and better geometry of the combustion chamber. There is still the gas exchange controlled by „slots“ w/o a „variable timing“ option and the mixing of lubricant and fuel, which is an emission issue.
But it will keep the small size and high revs from the Wankel for maybe an other decade in Japanese sports cars.
Good as motorcycle engine!
This is a great breakthrough, due to its small size. What is the large fan blowing air into the motor for? Is it for cooling, or compressing the air intake?
If so: this fan is out of date. There is a more efficient one, which comprises & channels a better flow. Which will be used on drones, ships & aeroplanes.
This engine appears to have similar problems with the radial and axial seals as the Wankel. As a result, the problems with the emission classes can be seen. The inlet looks limited by the eccentric shaft. Super-/turbocharging and air filtration become complex in this design.
The present design only allows the combination of a maximum of 2 rotors.
Liquid piston is hard to block in the bigger units and is bigger and heavier than comparable Wankel.
Rotor is heavier and harder to cool, exhaust and intake within it are very challenging.
Additional cooling air need to be filtered together with air used for induction, and has pressure of exhaust gases. Hence blower is needed.
Asymmetric thermal load of housing in the Wankel is exchanged into asymmetric thermal loading of the rotor.
The amount of injectors and spark plugs is tripled.
The only practical solution is one rotor configuration, and two rotor configuration (with shared exhaust or intake is imaginable.
it isn't the successor to the Wankel until it becomes a commercial success. I wonder if side porting with Rotax style intake discs would be better than through he shaft and piston for the intake and exhaust?
It may be the reason to cool the Dorito shape rotor with cool intake air. They may have no better method to cool the rotor.
It's really great it uses the four-stroke cycle . with three combustion Chambers rotor the oval rotary engine
I'd love to see it replace 2-stroke compact generators
I think this engine would be great for hybrid electric car ,this engine could generate the electricity to charge the super capacitors and batteries instead of plugging it in .the liquid piston engine would run for a short period of time to generate the power needed and if the batteries run Low you could run the generator to run the electric motors the efficiency would be very high .to meet the air quality regulations you introduced with the fuel mixture heated vaporized gasoline in small quantities it will burn all of the hydrocarbons in the chamber increasing its ability to pass the EPA regulations creating a regulatory system for the vaporize gasoline should not be that difficult heating the gasoline in a system like Mr. coffee capillary heat system ,vaporizing the fuel quickly and efficiently you do not need much of this vapor to burn the hydrocarbons and all of the liquid fuel , after the compression cycle and detonation would be complete.
2:43 DE VEL LOP MENTHHHHHH bro development 4 sylables xD
lol I don't think you can turbo charge an engine like this where the exhaust is open on both ends for cooling. And supercharging also seems like it would be difficult with it's intake design, but probably possible. I would think more Doritos chambers would be used to meet power needs before trying the boost. :-P But still a very cool design!
The idea with this is to NOT need turbo/supercharging due to efficiency. You either make the rotor larger, scale up (1,2,3) or a combination of the two.
What is the latest version of this motor in diesel!. Thank-you!.
With the high power to weight ratio I could see something like this being used to power a small aircraft.
Another advantage would be that a plane with this type of engine could be run off of jet fuel which would simplify fueling operations.
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Thx for your support Bro :))
Great video 🙏
Me want some Doritos now😋
How do you cool the rotor and deal with differential expansion? Isn't one side of the rotor always hot?
Yes. And I think cooling the housing would be easier than cooling the rotor.
Each chamber is goes through cycles. Thermally the load is spread out. the rotor is already fairly open in of itself compared to that of a wankel. Per their website there are two ways they envision interior cooling: skipping of cycles and watercooling.
@@DavidSimpsonJr973 , not the chambers -- the rotor. Combustion only happens on a single face of the rotor, so that face will be hotter than the other faces. The wankel rotor by comparison has three combustion faces, which uniformly distributes combustion heat across the rotor.
Throttling an Archimedes rocket engine is done with electric motors powered by lithium polymer batteries. Throttle control is critical at max Q. Seems liquid piston could do the job with better weight and power density.
This is very interesting, I'm going to try and look up some cad drawings...
My application would be for an external combustion engine design.
Should be able to utilize the sparkplug ports for both "intake" and "exhaust", eliminating the "ice" intake and exhaust paths shown.
I also cannot see how one would "stack" the engines together considering the way the intake and exhaust passages must be run .. I also see cool intake air running alongside hot exhaust gas.. this would hurt efficiency
You might be able to have the two hot or cold sides facing each other, though piping will be a bit annoying. It is fairly easy to scale up, so it'd be unlikely you'd ever need more than two.
We have pretty much mastered the internal combustion engine and forced induction /turbo charging and engine management running on various different fuels anywhere from propane diesel hydrogen gasoline e85 alcohol just take a look at f1 engines like the honda with its titanium headers glowing purple at 15000 rpm now we will figure out electric cars next and master that!
Exhaust gasses running through the rotor, same rotor the intake is running through, that will likely nullify all the other positive aspects.
Thanks a lot ✌️✌️✌️✌️ Great job !
Hi.
This is the engine I was wondering about.
The point that the housing is hard to wear.
If the air supply and exhaust equipment is installed on the housing side (similar to the conventional reciprocating engine), oil film scattering can be prevented.
It's an idea that gives me hope.
I want one on a motorcycle lol.
It should be called the over rotary three combustion Chambers per rotation per cycle
Are you Indonesian??? Your accents sound like Indonesian...
For Wankel engine though it can produce plenty of horsepower and RPMs the torque ratio is low how is the torque on this engine?
👍
Deepfake AI voice will help this channel immensely.
You can called ut rotary engine😁
Increasingly, automobiles are going to battery power, partly because governments are requiring it. There are good reasons for that, but there may still be a market for this engine. It seems to me it would be excellent for light airplanes.
I like how piston engines are having another development process they are not obsolete like these pro electric eccentrics want to make out
When might this engine be available for the public!.
Being developed for military use, currently. Once the kinks are out, I'd expect public applications. They demonstrated it powering a go-cart and a drone.
I wonder how this would do as a light aircraft engine. 100 octane leaded aviation fuel would seem ideal.
Can somebody explain me that What is the difference of this design in terms of the problematic oil burning failure that Wankel motor had. and resulted in the ban of Wankel engines cause of the pollution its make from it. I love rotary engines and just wish they fix the oil-fuel mixture problem in the future, is this promising in that point of view
It seems that it still needs to burn oil, this failing emissions. But moving the "apex seals" to the housing increases their longevity.
And having 3 combustion chambers helps engine heat distribution, instead of one side on the engine like Mazda's causing the engine expand and contract only the hotter side of the engine causing more seals to fail.
So Wankel engines also need a 2-stroke gas mixture? Must be hard for Mazda to clean those oily exhaust gases
How is it lubricated!.
Fictional design at it's best.
Is there a Super Charged version!.
How do they work with
eachother? In case you need
More HP? Is it ignition at same
cycel?
everything is under development, but pistons are indeed the easiest to understand and are still the choice of motorcycle manufacturers... pistons have also been proven to be easier in development
it's not in terms of being hard or easy (rotaries are quite a bit easier to fix and use less parts so it's also cheaper to produce than piston engines),the piston engines had been in use for years now and the technology has been backed up by everyone so it's seen huge progress over the years meanwhile the rotary was only used by mazda as a car engine so the development was limited,given enough time and money rotary could probably be as good or even better than pistons
I dub thee "The Circle Jerk"
Why is it called liquid piston?
Because that's the company name that invented this engine.
That was a name for an earlier engine that they formed the company around. This is a later engine that they chose to proceed with development on. That was likely 10-15 years ago.
Not able to seal it and lubricate it as a piston engine is the problem that can't be overcome.
The three "apex seals" are located on the housing instead of the rotor
@@objective7042 And for the 'thickies' that do not see how that can be done, it has better oil delivery and cooling than piston rings.
How big in litres, can this motor get, diesel version!.
I think if you want more capacity, you'd just make it bigger.
Could this be perfect for a steam powered generator? Just close off the fuel and airintake, put a injector in the sparkplughole.or would a teslaturbine be better?
It looks to me like you made the rotor stationary and move the rotor housing spin around it. The seals will fail prematurely just like a wankel. I have a RX8 and there are things you can do to correct the wankle Rob Dahm is probably the person who knows these engines best. He has a driver that reliably makes 2000hp and 900ft torque. Everyone said that was impossible but he did it using common sense and it worked.
It would be better if Arabic was added!
interesting design. same issues as the wankel though, apex seals, emissions, oil burning and longevity.
Nope. The apex seals are on the engine housing. The seal can be on a roll, that the engine computer control moves occasionally. Emissions are far superior to the Wankel, which have been sorted anyhow. A new rotary was introduced by Mazda _*today*._
it will need a counterbalancing weight to stop shaking itself to pieces
Where do I buy one?😮
Same issues like Wankel: lubrication residue is burnt, exhaust will not be clean. Combustion engine end is set for 2035, no development without improvement makes any sense.
Meant to say what these guys are calling a so-called liquidpiston engine is nothing more than just a common rotary engine, except they put a new title in front of the name-"liquid"
It does not look like you can stack it like a wankel engine.
How do I replace my engine in my lawn tractor with this engine. Can it run vertical? My engine 25hp.
If I were you I put these on push lawn mower and sell a bunch and see how they last.
where can i buy one for my bicycle? ;)
You cant, US government has contracts with the company. It probably wont hit the market for 5-10 years
What about lubrication inside the wall.
its still using 2 stroke oil. :(
I still think you can make the two-stroke cycle engine the smallest
the power doesn't seem to be pushing as strongly as does a normal piston.
How would you add more rotors when the spark plugs are on the side? The rotors would have to be very far spaced apart.
If you use electric generators for 'power take off' (PTO), there would be no need for a common shaft (NB not a 'crankshaft.') And power could be distributed to wheel drive motors in an optimal way.
ok this engine is epic use "the piston" for intake and exhaust the gas
Is that three combustion Chambers in each combustion chamber has the four-stroke cycle
Torque. Any mention of torque?
how they can add more rotors with this design of exhaust ?
I want the testing kit. How much?
30k is what I hear
@@tomadams6540 i want 3 of em. But ill pay 200 each
Sarich Orbital Engine
Same kind of problems.
can be 3d printed?
i think you can produce this engine With CNC machine bro :)) thank for visiting my channel .. :))
I wonder 🤔. The main production problem would be producing the main body. CNC will certainly work but gets expensive to manufacture in big quantities. A sintering process may work well and can be scaled and is very accurate, look at how many millions of çarbide indexable tips are made that way so scaleing the process may work, I don't work in that process but would like to hear the thoughts of someone who does.
With the power to weight ratio this engine has it would make a nice monoplane military drone motor but why is it called "liquid piston".
It looks like the fan is turning in the opposite direction of the rotor