The dreams of engineers are often the nightmares of the mechanics who have to service them.

the major benefit of the Liquid Piston engine when it comes to Rotary type engines is that they have managed to get rid of the Apex points, which is a major issue for Rotary Mazda owners. By getting rid of them, they can increase the efficiency and power of the block.

Hey man, love the video! Quick, to the point, informative.

Good content. Thank you. So little filler and healthy scepticism with a chuckle even! :D Love it! +++

I did enjoy the video. The engines shown in the video were definitely strange. I would have liked to have seen more information about the engines. All in all, very informative.

I remember reading about the quasiturbine back in the late 80's in 'Motorcycle news' here in the UK. 30 years later it's still being tried...

Thank you for including as many videos as you could.

Excellent video. Thanks

Quasi-turbine, spends $86,000 on machining internals, spends $7.95 on plumbing fittings to pipe it up...

I really like it when the thumbnail is in the video nice job

Go over a bump with No 6 Circle Cycle and everything will go with a mighty Bang !. All clever stuff though.

Dude. I love all those engines. Thanks so much for the great video.

3:49 "Yeah, you've got a main seal leak, it will coast you $125,000.00 to fix."

that circle cycle motor had me on the edge of my seat lol

Some interesting design engines out there hopefully I get to see them one day and some of these newer cars

"An engineer's wet dream is a mechanic's nightmare"

the second one is really interesting. it has issues though. it'd cost a lot to manufacture and build. alignment of the chamber and piston would present great challenges for companies to be consistent. it however, looks like it'd rev extremely efficiently. especially since it combines the physics of a fly wheel into a crank shaft. but one misalignment of the piston or chamber and the thing will explode. damaging the entire engine, while most issues with normal engines are fairly salvageable.

Thank you for this awesome list video with 7 items that doesnt take 27 minutes to watch!

very good visualisations - great job, did you model them yourself?

#5 Quasiturbine - This is very similar to a concept put forward in the early 1970s by the Rotarymotive Developments group in New Zealand. RMD was engaged in exploring various rotary concepts, many of them developed from inventions of Mr Hamilton Walker. Most of his patented concepts were based on an oval piston or stator as in this engine. This particular geometry - using a lozenging rhomboid piston - can provide consistent seal engagement between the stator and pistons but that is about all it has going for it. Otherwise it has most of the shortcomings of the common Wankel with high surface to volume, even more complex sealing grid, plus a few extras such as the varying angular velocity of the drive shaft (or the need to add a differential mechanism to take out the hunting of opposite piston pairs) and high mechanical forces at the seals which have to drive the inertia forces as the pistons rock back and forth...........9 out of 10 for complexity

Thanks for the video bud, lmao at the way you laughed at the name liquid piston, took me a minute to get that.

Wow, the cycle engine! I thought several times about a similiar concept with magnets. But I am not an engineer. :p

I was previously unaware of your channel’s existence but I’m intrigued as ever. You have earned yourself a subscriber

Great video beautiful 💡

that second one looks like it would be susceptible to alignment problems...

I really like the concept of Ion engines although we have to find a way to make them more powerful :D

Love the 2.0 Vc-Turbo on my Altima & 1.5 on the rogue. Provide nice power & efficient on fuel ⛽️

Cool video, thanks :)

The Liquid piston would be good for power armor where light weight, fuel efficiency and high output power is more important than engine longevity.

Imagine trying to lubricate that last engine design...

What an awesome selection of engines!

that circle cycle has a LOT of meme potential. nice

Yup more moving parts has come to mean "oops more to fail" and that in itself does not usually inspire buyer confidence. Opposing piston though sounds really cool.

A good rule of thumb, fewer moving parts means better longevity. (Provided parts are made to a set standard)

Thank you for the great video

Imagine a 4 cylinder push rod with a simple carb.

That 2nd one looks dangerous as hell

The 6 piston 3 cylinder engine is basically an evolution of the Napier Deltic, the German Jumo 205 and the Fairbanks Morse 38 8 1/8 submarine engines. Look them up, especially the Deltic, a fascinating and complicated engine.

That was interesting, thanks for sharing this video

Achates 2.7 is really nice concept that way 360° blast efficiency can be captured.

Gm: yeah, just reuse the block... New heads? Sure, yeah that works. Just make sure they fit that one block we made in 1997...

My top three favorite new and upcoming engines by number, 6, 1, & 3.

I love that 'pocket tanks' background music in this video.

the liquid piston rotory by simple physics is definitely a bit of an upgrade. Its basic physics. The rotor path is smoother and because it uses less forms of motion, more of an in and out AND round and round creates less dynamic internal momentum change=less momentum to change=less rptating weight+a round rotor design would seem to allow different terms of compression.

We need thinking like this now more then ever. Really cool.

Very intresting. It all depends on the efficincy and consumption for the future.

I like the circle cycle, and achates engine. Definitely game changing designs.

A number of these have practical potential ! Like you, I would like to see more actual hard data on them before I make up my mind. We are a small engine repair facility, and would love the opportunity to test a few of the smaller engines in real world application ! The chainsaw, and the Go-Kart definitely have our attention !

The things that Koensigg is doing is truly incredible . Check it out ! The guy is a genius ! Solenoid valve actuation , infinitely variable . He also came out recently and stated that all internal combustion engines will be ineffective in catching the quickness of the EV’s but that hybrid drives will be the best way to go until battery technology catches up . He is a man willing to see what is wrong with what he has been doing . I expect Koensigg to come out with a hybrid at some point now that he has seen what Tesla has done .

You should've mentioned konigsegg's electronic valve engine. That thing is dope

1:50 Gotta love that plumbing pipe handle.

I've had an idea for a motor for the past 30 years but never did it. After watching this (and kind of expecting to see my motor) I should try to build it.

These concept engines have been around for 30-40 years...

The Duke engine is a pretty cool design. Fairly familiar. You guys should look into it.

Those variable compression engines have been in Infiniti cars for 2 years... still nice video.

the second one just making the infinite popping sounds lol

Some of these look like exercises in how to make an IC engine vastly more complicated (and thus, less reliable and more expensive) for a 5% or 10% gain in mass/fuel/power efficiency.

Nice engines but lack of subscribers keep up the good work and maybe days months? You may gain more subs and i'm in😁

I can already see Nr. 6 exploding in spectacular (and expensive) fashion.

Even mechanics are engineers themselves and they quickly pickup the defects of creators of machines

... you're right. all strange, and i've only heard of 1 of them (Mazda's SkyActivX).. you get a Like, good sir

Excellent!!

You seem so smart. What have you created? Very good at critique. Most critics have not actually created anything.

Looking forward to the sky active X engine.

The quasiturbine (No. 5) 1:32 is similar to an engine invented in the early 1960’s by Eton Rajakaruna, a friend of my father, in Hull, UK. He was from Ceylon (now Sri Lanka). He called it the “heart-beat engine”. It was featured in an article in Popular Science magazine in April 1962. He was inspired by a vague idea my father had about the possibility of containing the intake, combustion, expansion & exhaust cycles inside a bag-like vessel instead of using a piston & cylinder. Eton’s design looked very similar to the quasiturbine except the combustion took place inside the collapsible box. He was a proud man & claimed that he’d built the entire thing himself in his kitchen using minimal tools. In actual fact my father made most of the prototype parts for him & he made small changes himself. It never ran because it was almost impossible to seal the hinged corners & sides where the combustion chamber contacted the cam plates on either side. It recently struck me that it may have worked better as a steam or compressed air engine, a point that is also made about the engine in this video as well.

Always good to see new ways to help the planet

very nice mate, thanks for sharing.

The LiquidPiston X is going to end up having the same apex seal issues that all rotary engines have. I also have yet to see a multi-rotor LPX, as all of the ones I've seen have been single rotor with the same triangular shaped intake and exhaust; how would they design for a multi-rotor, or even a design for a more conventional intake and exhaust? Having the ports spaced around the shaft makes things more difficult, and a multi-rotor would have an odd design of intake-rotor-exhausts-rotor-intakes, or for 3 rotors it'd have to be i-r-e-r-i-r-e, and the piping for that kind of setup would be insane. What about chargers, with six inlets, and all the piping that comes with them, you'd end up needing some hefty charging equipment when compared to other engines. Wiring is another issue considering all the plugs are also located around the entire engine. Also the difficulty of machining the rotor is questionable. There's also the fact that LiquidPiston disappeared for years, then came back just to disappear again, and last I know, nobody really knew why. Either they got a good contract, or they ran into financial issues. Of all the new engines, outside of mass-production ones from large corporations, LPX is one that I would've hoped to see come to market and actually be decent. It'd be nice to have a modern rotary, other than being used as a hydrogen fueled range extender for electric driven hybrids, but I don't think we'll ever see one at this point. Hopefully someday LPX will have more than just a single rotor to show off, but I have my doubts.

#2 is cool, but even a small offset and it blows itself up

Interesting, to see what may become.

Very interesting designs... The simplest and probably the most efficient one is the Liquid Piston engine... The power to weight ratio potential of this Liquid Piston design is also quite impressive... The Wankel Rotary engine was a very innovative design, and they had tremendous potential, but they had some serious inherent problems. The 'Liquid Piston' engine design seems to have solved all of the inherent problems of the Wankel design, with the high power to weight ratio and what appears to be extreme reliability and simplicity...

Damn I saw a rotary engine so I though of a new way to make an engine, then found this video and the arches 2.7 is what I was thinking of trying 😂

The extra friction and weight of the Infiniti VC engine probably erases most of the improvement in efficiency. The extra manufacturing cost of the monkey-motion linkage makes it more expensive to build and buy, so it probably won't pay off for the user. I predict a short production run.

good to see people trying to keep the rotary style engine alive

absolutely loved this

Should make a video about new winding techniques for electric motors, new magnet technologies, transformer rectifiers, batteries or big capacitors. We are not going to be using gasoline much longer. Also the hall thruster was very cool.

I wish I had a grip of this knowledge and imagine with the names and numbers and what each components individually do.

1:34 The noise it produces makes it possibly unusable for some things!

1:25 - that's not a running engine, it's being driven by an electric motor. It just proves you can make some things that fit together when rotating.

Wow yeah this thing probably hits way harder than my zvx 18 what was I thinking

There are some cool engines here for sure. The quasiturbine engine will probably sound really cool with a larger displacement. I agree though that it does seem a bit overcomplicated

The CV four lobed epitrochoid motor could be efficient af!!! That is cool! Think it was #4 on here.

Well, until then, we're still waiting for the interdimensional engine from Area 51 to appear.

The Infiniti/Nissan engine is the best and practical. Thanks.

Wow i didn't know this channel before, and expected a video of the quality of those indian mainstream channels that use clickbait and titles like "dangerous modern big machinery processing" that sound like they just took a bunch of words that sound spectacular and put them in a random order. But i was positively surprised. Thank you.

The Achates is a similar design to the old Leyland L60 or Commer "knocker" engines, or even a Doxford, being an opposed piston 2-stroke diesel engine. It's just a lot smaller than those older models.

Notice they cut away the normal spark combustion engine cylinder during the skyactive demo? That's because skyactive is almost literally the same thing just timed/metered more efficiently and works at a higher compression than a typical combustion engine. It is a step above normal combustion but that simulated cutaway veiw was the wrong way to show it because the difference is almost indefinable. It has a crank, pistons, valves (int/exh), spark plugs, works on 4 strokes, the same 4 strokes. It's not a new engine or even new technology. Hundreds of different combustion engines run the same way but with different compression/timing. Maybe it is different and was just explained improperly? But everything I see just shows a normal combustion engine

"Too Complicated!" LOL. Compared to what? Have you seen the inside of a Mercedes DOHC V12? And they run reliably for quite some time thank you very much.

The opposed engine setup is used as a train called a delta something. It’s got 3 cranks and 3 cylinders in a triangle, dunno how many in total.

Nothing will ever be as great as the overhead valve, pushrod V8. I grew up a big time gear head and I recall reading a very technical book about engines where the author explained that if engine technology had continued to improve at the rate it did from the 1940s-1960s, then today's small block Chevy would produce north of 10,000HP and 15,000ft/lb and last for 25 million miles

It would be trippy if someone got an air impact wrench to operate as a 2 stroke engine.

2:06-2:20 i thought i was having a stroke

Spot on about #6, it doesn’t appear to be anything I would want to be near if it got if the timing got off, with with a camshaft.

Link to the background sounds? Its nearly impossible to find by search terms?

The last one is just a updated rotary motor

The Achates reminds me of the Deltic opposed piston locomotive engine from 70's or maybe late 60's.

The Skyactive engine design has been around for ages. Think it has promise, that rotary too?

I'm from the future and Infini does sell cars with the VC Turbo engine. Nice performances too, but no data on reliability. Me, I'm in the "opposed piston engine" camp. Low rev, low psi, low complexity, no valves, cams, belts,etc tons of torque and efficiency.

Number 6 is a bit like a deltic engine

What happens when the Circle Cycle Engine gets just a hair out of line, and the Pistons slam into the cylinder/s like a sledgehammer into a tin can, wouldn't you think so at least. I'm sure they have researched this and tested it over and over, but it just seems quite farfetched as far as durability and dependability over time. Kind of like when a timing belt breaks on an interference motor , the motor is practically destroyed in mere seconds, maybe the same thing would happen with this motor, one simple out of linement and the force and speed would create a destructive chain reaction and destroy the entire motor in under a second at high rpm. Perhaps?