I would never test a new engine design in a way where I have to straddle my man bits directly over it

@grubby1975

10 ай бұрын

Well, to be honest, it sounds like they're small enough to not be hit by shrapnel if anything comes apart! 😂😂😂

@whataboutbob7967

10 ай бұрын

LMAO

@1SqueakyWheel

10 ай бұрын

That was my first thought too!

@thecombatwombat69

10 ай бұрын

@@grubby1975balls are balls

@beaujacklewellen6524

10 ай бұрын

@@thecombatwombat69big ball’s definitely get in the way more some ppl wouldn’t know 🤷🏽‍♂️

I never thought this would end up on the internet. My professor in college showed us this. His friend was the one who made it.

@blackbeardthepirate7467

8 ай бұрын

People love innovation, heard about this at least a decade ago. It's a cool idea, good on em.

@jacobhammond5432

6 ай бұрын

I remember reading about it forever ago too lol

@Gruwg2024

5 ай бұрын

Prove it

@powcar91

5 ай бұрын

@@Gruwg2024 it’s been 10 years since I was told about it.

@1Giuseppe007

5 ай бұрын

just curios, how long ago?

Doesn't the rotary valve have sealing problems? Something like the rotary engine.

@thomasgeorge4384

10 ай бұрын

I can't say that it definitely does, but it stands to reason. Consider the number of points where it's gotta seal, the precision of that joint and its relation to every other joint on that head, the fact that you have made every last sealing surface nonplanar and curvilinear, and the fact tlat, unlike a tappet valve, the pressure of the cylinder is gonna try to blow this little monster open instead of hold it shut... you've eliminated the camshaft, but you're making the cylinder head and valvetrain three or four times more expensive and prone to failure, and impossible to reliably fix without a CNC machine. You'd be better off trying sleeve valves again.

@bigboybuilder

10 ай бұрын

going to have dirt, lubrication and carbon problems too

@bigboybuilder

10 ай бұрын

look no further than Koenigsegg Freevalve wish i would have had my crap together back in 1986-7 when i got hold of a 2.5 chevy cyl head to

@calebz1448

10 ай бұрын

​@@thomasgeorge4384I feel like with all the variable valve timing technology today that a little bit of engineering like having multiple drive gears along this rotary valve train to reduce the strain on a singular front mounted drive gear would help immensely. The true issue today is making sure not to create any designs that are inherently more reliable than the 4 stroke we know of to sell us on the electric lies

@tomconner5067

10 ай бұрын

Im pretty sure they worked that out

I heard of a big block getting excellent mileage because they could pump up compression and keep detonation low… in the 70s

@ferrumignis

8 ай бұрын

It's all relative, "excellent" milage on a big block is still pretty terrible compared to modern engines.

@SoulTouchMusic93

8 ай бұрын

you can pump up compression if there's fuck all air to compress in the cylinder. if the thing is soo undertuned it makes 160hp out of 7 liters yeah, it's not gonna detonate. it's basically quarter throttle.

@gsilva220

5 ай бұрын

The high compression ratio with no detonation basically means the valves were leaking, and compression at low RPM was low as a result.

@jeremylakenes6859

5 ай бұрын

@@gsilva220you don’t understand detonation. Just like a diesel engine, you need heat and a quick compression of air to adiabatically ignite the fuel. When the cylinder temperatures are able to stay low, detonation it kept to a minimum and allows a high compression engine. These engines I thing were sunk by other engine companies

@gsilva220

5 ай бұрын

@@jeremylakenes6859 Cylinder temperatures at the end of the commpression stroke are directly proportional to the dynamic compression ratio of an engine. The valves on this engine leak, so although the static compression ratio is high, part of the charge escapes, lowering dynamic compression ratio. Just like the wankel engine, this engine is an excellent idea. However, just like the wankel engine, it has unsolvable flaws. Take a wankel rotor, turn it on its side and you'll realize you're trying to seal a rectangular piston. Look at a coates cylinder head from up close and you'll realise you're trrying to seal a ball valve at high speed, temperature and pressure. For it to work as well as poppet valves, the rotating valves would have to be forced against the cylinder head by combustion, not away from it.

This was in popular mechanics back in the early 2000s

@jnicksnewstart

10 ай бұрын

It goes back to the 1980s

@ferrumignis

8 ай бұрын

@@jnicksnewstart It goes _way_ further back than that. Rotary valves were used in the early 1900s in some aero engines because the poppet valves at the time had reliability problems (material problems).

IIRC, the big two biggest problems were sealing against combustion pressure and lubrication of the "valves", but in the long term the valves ate away at the necessarily tight clearances with the cylinder head to the point of allowing spent gases into the intake tracts, eventually stopping the engine altogether. Poppet valves have proven to be the only demonstrably reliable setup for well over a century.

@appalachianamerican1776

8 ай бұрын

No valve is the best Valve.

@beaconblaster33

2 ай бұрын

​@@appalachianamerican17762 stroke gang?

@r.guerreiro140

2 ай бұрын

There are also the sleeve valves of a few aeronautical engines

I remember seeing & reading about this in one of my Car Magazines back in the 1980's.

@billlongley9925

9 ай бұрын

It popped back up in the late 90s too. I remembering seeing and being amazed.

Valve sealing will surely be a big problem with this sort of design, and it also looks very expensive to machine those cylinder heads.

@Solnoric

Ай бұрын

Sealing was exactly the primary issue.

Sealing issues was the first thought I had, but it also seems really restrictive on the exhaust side. I can’t imagine it allows the engine to breathe very well which could never really be reliable in the long run

@MAGA-Chad

8 ай бұрын

Dude, the narrator just said these things could clock near 15k Rpm. I wouldn't say that's restrictive.

@rientsdijkstra4266

4 ай бұрын

@@MAGA-Chad Question is: how much gas does it let pass and how does is scavenge at those rpm. This will determine torque and power.

Honestly it seems like a good idea because there would be less moving parts but the problem is the sealing surface is too large at least In my opinion. With refinement this could be a much more reliable engine with a lot of performance potential via traditional variable cam systems

Yes, I remember that, It was going to revolutionize the automotive industry. The valves couldn’t seal the cylinders and they had to be machined perfectly and is very expensive. The geometry is backwards to be a good seal mechanism.

@MAGA-Chad

8 ай бұрын

Technically, even poppet valvetrains need to be machined perfectly so yeah. Not really understanding why so many people are talking down on this concept. It would've work had the company spent more time doing research.

@jeroenkoehorst4056

8 ай бұрын

@@MAGA-Chad Poppet valves can wear in on the seating and all you need to do is adjust the valve clearance. With these rotary valves you need a new cylinder head. The warming up fase of the engine will be a problem too. The rotary exhaust valves need room to expand during the warming up when the head is still cold. But that takes away the tight sealing you need.

Had hope for this design maybe they will get it together

Seems like a lot of unnecessary friction

The Coates facility is still in NJ, I was asked to come discuss some of their projects in the late 90s. They also tried to get an investment. Coates, definitely a genius did a great job solving the sealing problem, it was too expensive to make to be viable for anything but a custom engine. The V8s they had built ran great on a dyno stand, smooth and quiet

Wait till it has a chipped surface, and/or needs to be serviced for maintenance.

@GetOutterMeHouse

9 ай бұрын

That goes for any valvetrain though? I mean yeah, this thing has a singular long rotating “valve train” but this is just the start of it. It could be made to be easier to replace parts and made cheaper. To be honest, if you are doing replacing in this application, it doesn’t seem that bad. I mean like new dodges and chevys are dropping valves or getting them stuck open because of their wack new VVT and piston shut down crap pretty commonly nowadays.

@user-sg4pp7oh9g

8 ай бұрын

metal maleável

looks like it will have oil issues, how do you oil those cams/rollers without burning and or getting it into the combustion chamber? also burning oil is not very predictable, thise rollers will warp due to the oil.

This is a design that Smokey worked with for a time, had success with small engines but I didn't find much more about his testing......

The engine sounds so smooth not having valves clanking around

They put a set of these on a ford sedan and made 500hp a very long time ago, they have sealing issues due to carbon and even as a kid I knew there was cleaner fuel then gas to fix that problem.

@Timbo_tango

9 ай бұрын

Yes I hear the same from my Dad who work at Ford Australia in the 70s. He also said the motor had huge RMPs(10,000) as the system save 20% on power otherwise used to drive sprung valves. At the end of the project one of the engineers put the motor in a boat that went too fast and sank due to the flywheel effect of the motor ripping itself off the mounts when the driver tried to turn the boat sharply around.

@johnnyveng4014

8 ай бұрын

pump gas is dirty on purpose; to keep us from using vapor carburetors.

@MAGA-Chad

8 ай бұрын

I thought I was the only one here who though that, AZ. Glad I came across your comment. Everyone else seems to be trash talking these cylinder heads

Any timing issue would be solved by a hydraulically advanced timing gear. I think it was Nissan who first utilized this on the 300 Z. At a given RPM a valve was activated on the oil pressure line diverting oil in the timing gear allowing the gear to advance say above 3000 or 4000 rpms. This allowed good torque at low rpm's and higher horsepower at higher rpm's and higher revs.

@markthurston601

9 ай бұрын

Vvt totally different u missed the point like a moons far off😅😅😅

That looks like a great idea. Too bad the R&D costs sank it. Someone should pick up where they left off, even though the auto industry is dead set on going all in on EV's.

@Cadaverine1990

10 ай бұрын

Sure we are... They may work great if you stay in the same city, but anything farther than 300 miles round trip you are going to be sitting for an hour+.

@adeadlyfart13

10 ай бұрын

EV's are a bubble market, soon it will pop

@DericCribbs

9 ай бұрын

Toyota and Mazda seem pretty resistant to the ev bandwagon.

@waldomouserd2830

9 ай бұрын

The new hydrogen engines are looking promising. They are starting to make hydrogen conversions for kit cars.

@robertthayer5779

8 ай бұрын

It's NOT the auto industry, it's the NWO industry! And it ain't working out quite like they hoped! LOL

Cams be flexing during comb

Man I bet oil consumption was higher then fuel consumption

@MrZcotty

10 ай бұрын

the hilarity of not seeing that whilst still in the design phase. 😂😂 i bet he also designed a carburetor that makes an engine run on water.

Thing about valves is that the higher the pressure against then, the better they seal. No one one has yet to come up with anything better.

Man this seems like such a great idea though, imagine all the movement and ticking noises it would take away from the top end of the engine. This is actually a tremendously good idea that needs to be kept alive.

Tolerances must be insane to keep seal

I could see the set up being really useful for commercial use because of reliability. I mean if the customer never gets a new timing chain or does maintence and it throws its timing it won't destroy the engine.

It's amazing how far engine design has come. There was a lot of tinkering and many completely different designs, but modern engines are actually very similar between all the manufacturers nowadays as everyone kind of comes to the same conclusion on what works best, within constraints.

This needs to be revisited

The internal combustion engine and all its variances is just fine

I also thought about this. It's a very interesting concept and if perfected it would significantly reduce the cost of cylinder heads.

Not gonna lie, I clicked on this because I thought someone had entered a Roomba with a blade into Robot Wars / Battlebots

Rotary Valve has never found a viable application.

"... and in theory this setup has high compression ratio, all the way up to 15 to 1..." 🙈

I remember reading about this over 20 years ago.

Example of not sticking with one engine until perfecting it!

I honestly thought that motorcycle engine was going to blow up under that guy's jewls 😂😂 I'm glad he's fine.

Good idea awaiting metalurgy and lubrication to allow it to work. Jet engines went through that problem. If the government would get off this electric car gig, it might happen.

@gabbymcgibson984

10 ай бұрын

You mean the government pushed petrol based fuel over electric 100 years ago? Oh yeah, I read about that. Can you explain why we need highly complex engines that cost WAY more than a simple electric motor and battery?

@ferrumignis

8 ай бұрын

@@gabbymcgibson984 Because we still don't have sufficient charging infrastructure and the energy still has to come from burning fossil fules.

@eddiehennig7835

8 ай бұрын

​@@gabbymcgibson984 - Because other countries still have children working in mines, just like they did 100 years ago, mining the materials to build the batteries. Also the cost of an EV power train is no cheaper than an equivalent gas/diesel power train. So what's the benefit of your super simple EV "solution"?

@gabbymcgibson984

8 ай бұрын

​ @eddiehennig7835 You are skipping over the fact that Tesla and soon many others are using materials sourced only from verified operations that do not violate human rights. You know the device you typed that comment was made by these laborers, not Tesla batteries? Well lets stick to line by line... the batteries are now almost 100% recyclable from companies like Tesla subs, CATL (China) and many others. In fact its a new market called commonly referred to in my industry as 'Black Gold'. I understand a lot of misinformation is out there and a bunch of social media channels say this and that but I will rely on facts. An EV power train from Tesla 3 (also including the rest of the car) is now cheaper than a Honda Accord or Toyota. Benefits? I can help you with your research but first lets fix your data and make it facts. Ask away, I'm glad to help :)

@jamescrud

8 ай бұрын

​@@ferrumignisLack of charging infrastructure doesn't negate the fact the using electric motors is a superior design due to simplicity and efficiency. The current bottleneck is battery energy density and of course charge time. As soon as batteries are close to the energy density of gasoline and charging time drops to a few minutes then it's game over for ICE cars. Will that ever happen?...that I don't know.

I feel like rotary valves would really fuck around with pressure waves in the ports

I know it's super petty, but every time he says "sapherical" my brain reboots and I miss the next three things he says!

That guy on the bike has balls,if the engine blew he wouldn't anymore 😞

This looks like a great idea removing all of the moving parts after the camshafts

The problem is when you have to turbocharge, the exhaust will be limited as the surface area in the exhaust valve is not enough to carry all the displacement of the cylinder, just imagine how much exhaust will be left in an engine with an extremely long stroke, like a Wärtsilä RTA96C

Sounds smooth

massive oil consumption has entered the chat. 😂😂

Damnit someone created my idea.

With modern material technology this is not only easier to make, it can be made reliable.

When the camshaft becomes the combustion chamber testing will get very expensive.

Now build a ONE WAY SOLID STATE TESLA VALVE ENGINE

it looks like it would have heat dissipation issues

@ferrumignis

8 ай бұрын

And lubrication, wear and sealing problems.

This was a very cool design many years ago.

This thing could really spin if the issues got figured out. No valve float, no reciprocating Mass

Spherical? Looks like a sequence of cylindrical devices

Are you fucking kidding me? I sketched this up 10 years ago and only just now have the tools to start making my idea a reality and now this?

Wonder how they stacked up against comparable designed like sleeve valves.

The wear on those spherical valves would be horrendous.

If you only ran air through the valves and directly injected something like propane or natural gas it would work and have less fouling and carbon problems.

Seems like a lot of work, cost, and complexity for valves. But pretty interesting!

Reliable sealing has left the chat

Imagine no valve springs resistance on the... No valve floating at high rpms.. power gains and efficiency must be crazy..

I remember reading about these back in the 90's. Nobody domestic was interested and ultimately wound up being bought by a chinese company that puts them on backup generators.

Tons of extra friction.

It definitely looks very cool

I'd assume its a smooth running engine. No upper valvetrain noise. In the videos shown, it sounds pretty smooth.

Fiat MultiAir is one of the best ideas. The cam drives hydraulic pistons which use oil pressure to open the valve. Oil is bled off to control valve lift and duration. There is no need gif s throttle valve but you can’t us the valve controls to start the engine.

I designed a rotary valve camshaft cylinder head, with no springs you can achieve high rpm with less parasitic losses

@RandomYoutube.Enjoyer

10 ай бұрын

Cool

@someonesomewhere8869

10 ай бұрын

Do you have an accessible design schematic?

@geoemg7140

10 ай бұрын

Bro drop them schematics 😶

@someonesomewhere8869

10 ай бұрын

If you need patent it unless it's already out there (then you're screwed), and then share it. There is also a design of patent known as a poor man's patent you can use. They have some ways to look up preexisting patents also

@whataboutbob7967

10 ай бұрын

How many running hours do you have on it?

So I assume there are no reliable fuel consumption stats either?

@StrangeTerror

10 ай бұрын

​@OskarHersch sorry buddy, you've got a lot wrong with that comment.

@juanmanuelgil3436

10 ай бұрын

​@@IvanNedostal1980?😂😂😂 incorrect 🚫

@pigtrapper1329

10 ай бұрын

​@OskarHersch the valve train is gear driven... it would be easy to adjust timing. just move 1 tooth over

@ferrumignis

8 ай бұрын

@@IvanNedostal Timing could be varied in the exact same way as modern engines do, with a phaser between the drive pulley/sprocket and the valve shaft.

...and I'm so glad!

I have never seen this before but I had a dream about it.

Looks like a timing nightmare

Piston combustion technology has an efficiency limit that are unacceptable at the highest achievable level. 90% efficiency is possible with proper techniques. It's all about simplicity!

Its an old idea like almost all. There's a water speed record in the 50s i believe in australia using a gray short motor block (virtually unbreakable stock. Holden6) and a rotary valve head.

ducati built a rotary valve engine on an Indie bike 50+ yrs ago . That thing was brutal,, it was a flat round disk ,, with a hole you could see it if you opened the carburator up and turned the engine..

Love this valve train idea,, I was always thinking about something like this

This design seems to only have 4 moving parts (bearings and gears) vs the many moving parts in traditional valves. I’m intrigued. It’s basically a camshaft and valve in one.

The heat transferred to the spheres has to be crazy. And I don't see any cooling ports for water. And sealing them has to be a headache. I wonder if they found a way to seal them. I bet they were red hot after a while.

Rotary valves were a fashion thing back in the late 50s early 60s

@brockmcqueen2340

9 ай бұрын

Willis Overland had rotary sleeve valves on the streets in the late 1920s. Not a complete match mechanically to these, but functionally almost identical. They worked pretty well considering the poor quality fuel and oil they had to run on.

@ferrumignis

8 ай бұрын

Rotary valves where used in some aero engines in the early 1900s before materials had been developed to make poppet valves reliable.

Nothing new there was a patent for this concept back in the 1920’s

I would think that because combustion is happening INSIDE the valves, you would have problems with those valves expanding and contracting due to internal heat.

This is like if a rotary motor banged a big block 🤣 😂😂😂😂

Don't know if I've ever heard anyone pronounce "spherical" like that before...

SEALS! Ya gotta have seals that can take the heat

You wouldn’t get any valve float with that design

Just seems like a two stroke with extra steps and extra complications leading to more things to go wrong.

I remember they did this on a Dodge viper engine and the horsepower was insane. Very promising. Had no idea what happened to them. The auto industry probably never wanted this to catch on for various reasons.

@ferrumignis

8 ай бұрын

Yes it's definitely all a big conspiracy and nothing to do with horrendous sealing and reliability issues that were not able to be resolved.

Now that inventor is sharing the same address as the rest that could cost big oil money 💰

Snap a belt and no valve damage nice

When southerners recover a crashed ufo and put hog ass space cams in it 😂😂

Holden tried and failed with this idea back in the 50’s with the rotary valve grey motor. They could never get the seals right and dumped the idea

my guess is that throttleling is a problem although sealing might be a concern rotaryvalve do or at least did exist in practical applications, but as far as i understand these valves woul be difficult to adjust differing rpm ranges

My only concern is possible build up of carbon on the exhaust valve part where it spins.

Trying to reinvent the wheel

Twas never developed because it too reliable and efficient. The hierarchy doesn't want the people to have efficiency.

Looks like quite a lot of material, still suffers the reciprocating pistons … I have seen cylindrical Valves similar to these with similar sealing problems …

I thought about that 25 years ago.

good; excellent idea, but seems like it would lose efficiency after wear very quickly with a laterally moving sealing surface.

Look up rotary valve e36, there's a guy who been engineering his own for years now, been following since about 09

I suggested smaller design in 1996 to BMW Manager when I was working there I was a 22 years old at that times I’m 48 now 😊 that’s why I was looking if someone made this still

That is so cool I've never seen anything like it😮

Seems like it would be limited by volume