New Technologies 2024: W-Piston Toyota | Free piston - efficiency of 50% | Powerful NEW engines
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- Опубліковано 12 тра 2024
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The ICE REVOLUTION is upon us with Toyota's groundbreaking W-Piston innovation. Pioneering the way forward, these free-piston internal combustion engines have redefined vehicular power, bringing forth an astonishing 50% efficiency unheard of in the industry. They operate as motor generators within electric vehicles, translating fuel energy directly into electricity. Compact, light, yet immensely powerful, these new engines eclipse traditional alternatives, paving the way for a more energy-efficient, eco-friendly future in the automotive sector. - Авто та транспорт
It's not a totaly new motor. This is just a variant of the Stelzer engine from 1996. Probably Toyota waited so long that the patents run out.
30 years ago i have seen something similar that was a aposed piston oil pump
do you mean 1969
Es aún más viejo en la década de los 50 GM gasto millones en esto y lo dejo tirado
The Stelzer engine is a two-stroke opposing-piston free-piston engine design proposed by Frank Stelzer. It uses conjoined pistons in a push-pull arrangement which allows for fewer moving parts and simplified manufacturing. An engine of the same design appeared on the cover of the February 1969 issue of Mechanix Illustrated magazine. (Wiki search result.)
Well other car industries had the option also to use the patent in that case. At least this engine will help with reducing emissions in the long run overall.
Big issue is VIBRATION, that kills everything mechanical
That thing looks like it would shake the crap out of the car sitting still lol
Vibration should be minimal. Apart from the single cylinder prototype the pistons would be in pairs moving in opposite directions so vibrations would mostly cancel out.
it is Adja bil machai Sam
Tell us when it is in MASS production then people will take notice and buy, otherwise it's an idea on a diagram, like others that manufacturers say will shock the car industry
I think wankel Engine and axial flux motor would be the great generator for compact type EV .
This looks like a good solution for certain applications but not for all just like everything else in life. In the past engines designed for one field would be adapted and modified for other applications like automotive to marine but this could fill an area such as generator systems or other stationary machines like pumps.
1. Vibrations
2. Permanent magnet de-magnetization due to heat (or magnet is well cooled)
I can see these 2 problems.
1. There is no mechanical coupling to the drivetrain, so it is much smaller issue.
1.b In the most cases there would be at least 2 pistons that cancel vibrations partially or 4 that cancel totally.
2. Engineers know about the issue.
And its 2 stroke lmao
Agree!
Also concerning is when exhaust-gases are flowing through crank-shafts or other parts of an engine that can't be cooled efficiently!
These engines might further improve on efficency with the us3 od ceramics, allowing for higher operating temperatures and less waste heat.
Hi, please explain the operation of the rubbing steam lubrication system ?
¡Maravilla!
Saludos desde Panamá.
🇵🇦🤗.
Correction:@peMac88. Looks very promissing. My LG fridge has a linear compressor, incorporating a linear motor to resonate the piston, or pistons if it has 2 opposing.
Excellent innovation sir.
Great
ну что тут сказать всё гениально и просто, это куда больше похоже на будущее, чем электрички 👍👍👍👍👍
Some interesting applications for this in marine world too.
They have a German Submarine in exhibition in a Chicago Museum, it contains a Free Piston engine, Opposed Pistons generating Gas moving a Turbine.
German crew opened a sump to drown the U-Boot, but a group of fishermen found it and rescued it.
It had also a 'Maxwell's Devil', a solid metal device, compressed air supplied from the vertical part of a 'T', one of side branches provides air hot enough for welding, the other side, freeze cold air.
Blessings +
Interesting only if one could rebuild the same would become a millionaire overnight, technology is available already not one's ready even to replicate it.
Do you even know what a Maxwell devil is?
For range extender we need split cycle generators, that can squeeze additional 10% of thermodynamic efficiency. Then stirling or thermoelectric module to extract additional 10 percent. 60-65% overall efficiency is possible.
As I watched this video, I was thinking Stirling myself.
Further, as a stationary engine option, a Stirling based system might be a useful tool for converting solar heat (from some sort of collector) to charge up batteries.
Stirling engines are efficient but bulky. They're better for stationary applications.
@@RodrigoFernandez-td9uk It can be Rankine or Brython cycle. Ehryrbrt.
You would need at least three cylinders for vibration cancellation, the middle one larger
I question just how efficient these are. The delicate timing involved with intake and exhaust valve timing isn't allowed for using these designs. In a normal, Otto cycle piston engine, you'll find the lift durations and overlap between the intake and exhaust valves is ideal. This is because of their placement at the top of the cylinder and allows for the engine to properly exchange used exhaust gasses for fresh air (and fuel in the case of designs not using direct injection exclusively). A lot of overlap is allowed for, which can help to reduce emmissions by only partially exchanging exhaust gasses to the headers (sort of like an EGR does but simply via not removing all of the exhaust gasses so a portion can be burned in the next power stroke of that piston.
Idk just intuitively it makes a lot of sense that the intakes would be at the bottom of the stroke, because maximal vacuum would be achieved right at the end of exhaust meaning intake mixture is induced into the cylinder simply by that fact. At bdc maximal vacuum is achieved and right at that time intake is opened. It just makes sense. The only reason it's never done that way is because normally you have to go through the head and it wouldn't make sense to design valves driven from overhead or by tappets, but this design all makes sense perfectly.
yes. 2 stroke engines are less efficient than 4 stroke engines.
not to mention dirty exhaust gas due to incomplete combustion.
pison is 100% dry. how long it will last?
Is it available in any market of the world? And what is it s price range?
The free piston design would have been a good solution if it was introduced to the market 20-30 years ago. The second single piston engine is to cost efficient as it requires the permanent magnets. Using an alternative will make the engine heave and larger in size. The Third engine has promise but will be expensive to run as we transition from present fuels.
Yeah, magnets might have a breakthrough though. Iron nitride
Super engine compact but high efficiency
Hi new subscriber here 😎
Could be an interesting direction for hybrid cars. Usually you run electric. On a long trip you use this engine permanently to add charge to your battery and boost your range from say 300 km to 900 km. Efficiency may not be the biggest driver. We need small size of the engine and all its needed components (radiator, exhaust, reservoir etc.) combined with significant power output (a model airplane or model car engine is small but it lacks power output). Even weight is less important as we can remove e.g. 25% of the batteries compared to a full EV which saves several hundred kg's.
La excesiva vibración seria el inconveniente
You may not want the generator to be large enough to charge the battery as that could lead to eventually running out of spare space for regen braking. If your generator is 2kW short from large enough to run the car and you have a 30kWh battery pack, you can run the car for 15h straight between charges by filling the gas tank. Designing this way gets you the smallest generator possible optimized to run continuously at a fixed load. No extra complexity for efficiently adapting to variable loads or dealing with a bunch of stop-start cycles per drive cycle.
@@josenelsonarroyave2935 Designed obsolescence.. as your cars shakes apart, even slowly stressing out the carbon fibers and spot welds.
@@teardowndan5364 There is no problem with a generator capable of charging the car. Many designs like the Toyota Prius, can drive and load the accumulator at the same time. You just stop somewhere between 60-70% charge, leaving enough room for long regenerative braking events while the cell voltage of the accumulator is still moderately high. Then you let drive the EV until you reach 30-40% charge or any moderately low cell voltage and turn on the generator again.
One reason why this is a good design is engine/generator efficiency. Most highly efficient combustion engines produce way more power (20-60kw) at peak efficiency than the average car would need for a steady-state drive which is somewhere between 5-15kw.
But any hybrid will usually be worse in short range compared to an EV and long-range to a pure combustion car because of the increase in weight for having two systems on board. Also price must be higher as you have to engineer and maintain more parts as a company.
@@MrHaggyy The only problem with a generator powerful enough to charge the car is that if it can do that, then you wasted more space and weight on an over-sized generator for the purpose of range extension (and supplemental heating in winter) than necessary. If you need 17kW to drive at highway speeds and have a 15kW generator, then you can drive 1500km on a 30kWh battery pack before needing to stop specifically for charging or having to drive at reduced speed/comfort.
Why not combine a sterling engine to this wonderful motor? Then you convert the wasted heat to propulson aswell!
Well redesigning the internal combustion motor
An improvement to be certain but not without significant drawbacks.
The piston/generator assembly represents asignificant amount of mass.
That mass, if not adequately controlled, would shake the engine into self-destruction rapidly as evidenced by the table in the video.
On the Toyota floating piston engine, they have created a hybrid 2/4 stoke engine. It still has an exhaust valve like a 4 stroke but uses intake ports like a 2 stroke.
This design also has a vibration issue however, it is reduced by pre-compression of the charge.
There is also the issue of the exhaust components weight. The exhaust exits at each end of the unit through a pair of solenoid operated valves. This requires a extremely long exhaust manifold.
Why not go full 2 stroke with transfer and exhaust ports?
You eliminate the heavy solenoids and valves and shorten the exhaust manifold significantly; reducing overall weight.
they could make an 8 cylinder version with similar fire timings to an inline 4, this would probably negate most of the vibration, and give enough power for larger cars or trucks
I am assuming it's a prototype at its current state which will have further improvements for certain.
WONDERING, How will they control the SIDE TO SIDE movement and inherent VIBRATION we see in the video?
Like they do in a boxer engine.
Great engineering.
that 3rd engine seems like it could be an excellent generator engine... 1 cylinder 2 stroke on each side... essentially doubling the cylinder displacement and 2 generators harvesting power on each side...
Nice concept, simply amazing there’s no need to convert conversion of reciprocation in to kinetic momentum, that’s why no bunch’s of variable moving parts, very less engine components converting reciprocation energy into electricity by linear magnetic field, that’s very cool, only the things to be checked is how much electricity it’s getting from the system,,,,
One of the most important thing is, it doesn’t requires to generate more torque to achieve acceleration, linear torque remains constant as no pressure on combustion chamber!!
but what will limit the piston travel? forget about thermal expansion of that hollow tube and its supporting bearing for now
magnificent technology......the answer to range anxiety .....Capt. Tom
Teknologi Bari yg Sudan digunakan tolong buatkan beberapa ulasan terima kasih
I personally think this kind of idea is brilliant.
The Stelzer engine is a two-stroke opposing-piston free-piston engine design proposed by Frank Stelzer. It uses conjoined pistons in a push-pull arrangement which allows for fewer moving parts and simplified manufacturing. An engine of the same design appeared on the cover of the February 1969 issue of Mechanix Illustrated magazine. (Wiki search result.)
junk. you have maybe 70iq if you think this is a good idea.
@sublunacy Sorry for taking so long to reply. What you are implying is that any imbecile is capable of demonstrating perfect precision engineering. I thank you for your kind assessment of my mental capability. I tend to think that a lot of inventions are brilliant. I tend to think that motor vehicles are brilliant and beautiful. The revheads and racers, as best as I can tell, are out to prove that they are worthy of the bubbly. It_s a lot of fun focusing on the red line 7000. It appears that some among us get their jollies taking the lives of others as opposed to risking their life. All very case-study interesting. I checked out your channel. I_m kind of wondering about it. Nothing major going on there that I can see. No disrespect intended. I mean, it_s so nothing i_m kind of wondering if it_s actually for real and not some sick joke being played upon me.
Free piston engines have been around since 1934, stelzer engine is a variation of that design where valves are in the middle and combustion happens at the bottom of the cylinders, this is not that its just a free piston engine
@shivamarya5225 Alright, so we are getting seriously inventive with our comments. I thank you for being such. I take it to are of Indian birth.Say hi to the Tata for me. It occurs to me now that it is on a road to Nowhere. That_s alright, apparently a lot of people want to go there.
@@doahadi1554 i don't care about tata, are u right in your head? does every american care about apple? or gm? like what kind of weird statement is that
How do you bakance that? Youd need to gear counterbalances to get rid of the rocking coupleing.
An interesting idea. Of course a lot of bits aren't shown i.e. radiator, water pump, air filter, fuel tank, silencer, fuel injection pump and starter motor (the linear electric generator could probably be used as the starter motor so a separate starter motor would probably not be required).
Yeah they said that about the starter/generator at the beginning of the vid.
Electric cars also have one or more coolant pumps and radiators for the battery pack, motor, motor drive, on-board charger, cabin heating, etc., the generator would just be the hottest hop in the heat collection loop.
With the new axial flux motors coming out, I suspect we'll see many hybrid vehicles ditching the conventional starter and alternator setup for an in-line axial motor-generator between the engine and transmission replacing the flywheel.
The concept has come out for a long time, I think the biggest issue of the free piston is that you need to waste lots of power to decrease the speed of the piston.
Plus it's going to shake like crazy! Lots of vibration.😲
not really. It slows down by itself because of the current it generates
Don't get most of that back from the gas spring though?
The limit of thermodynamic machines is not in the piston an blades but in the physical parameters. Meaning changing piston and blades improves nothing
The end stop gas spring seem a bit iffy. How is the piston lubed? Perhaps make the piston/linear generator as a tunable electromechanical notch filter to drive the piston in the compression stroke using back EMF?
A two stroke engine has oil injected with the gas.
Muito bom.
But aaaaaaa, converting mechanic enery to electric energy then back to mechanic energy does not waste many energy?
Free piston engines can't easily be hooked up to get the mechanical power out. That's why it's cheaper and easier to attach a generator and use the electric power directly. It's more efficient and has less parts, much simpler. You can create an engine that is mechanical, but it requires much more complicated parts. The free piston doesn't have to go completely back and forth, it is free to travel, nothing connecting it, hence the name. Regular engines have a top dead centre, a measurable maximum distance from piston to head - this does not.
All ev use mechanical energy that was converted to electrical and then back to mechanical except solar energy thus energy is always
😃👍 Amazing
Such free piston engines are very easy from the design and manufacturing point of view, but they are rather complicated to controll. The best way to make them is to use a spring-mass-design, which is capable to accumulate the energy of several full power piston strokes. Otherwise they behave very rude with a lot of vibration due to running into their piston stroke limiting bumpers. This problem can be observed very easily in the video of the running engine, when the engine reacts with hard push into its suspension.
The power control needs to work very fast and very precizely, so that the piston always keeps its stroke to maintain the compression ratio. Usually it is done by controlling voltage amplitude of the output AC which is directly proportional to the maximum piston speed. In case it is too low the generator input electronics must lose its break load, in the opposite case it has to enforce its break load.
This power control narrows the power band very much around a certain design power, because the engine runs at a more or less fixed frequency and a certain minimum stroke. So it is usual to design the engine and its control to a fixed operating point at a fixed output power. For hybrid cars this is not such a hard constraint because you can manage your power requirement by use of a buffer battery, but in other application it may be.
The narrow power band isn't a bug, it is a feature: practically every gasoline-based EV range extender concept is only intended to run at constant load near wherever peak efficiency is for the engine type being used. Designing for constant load at constant RPM simplifies things. Slap a 15kW generator on a small EV, tell the EV that you are going on a roadtrip, EV starts the generator once you get on the highway and need 16-20kW to keep going or the battery drops below generator start threshold, you arrive at your destination with 5-20 fewer kWh left in the battery and the generator putting out a constant 15kW all the way.
@@teardowndan5364 this is correct.
in the 1950ies, as they started in the Netherlands to use Phillps Stirling cycle engines without a battery buffer, the heat capacity of such engines was a challenge. They have used 2 cycles engines with a phase shift of 180 degrees between them.
In oder to build up power or to reduce it they have used a pneumatic engine cycle short circuit valve in a pipe between the cold ends of both engine cycles. So they could keep the operating temperature at the hot end high all the time.
What stops the piston (at TDC) so it doesn't hit the head and same at the other end BDC? And how does it start from stationary? All these computor generated images work fantastic, lets hear one running.
he said the magnet system can be powered to move the piston before combustion starts
Keep in mind that you have a seriously strong electromagnet connected to the piston that acts both as a generator AND a linear electric motor. The electromagnet can be operated to push or pull the piston with variable strength in a matter of milli or even microseconds. Since the weight of the piston is known and the speed/exhilaration is measured down to microseconds level one can quickly add or subtract to or from the piston movement to make it stop exactly where you want. It is this same process that is used to control the compression ratio on the fly.
@@wrndlabs Exhilaration is not the correct word, the word you need is "acceleration".
@@wrndlabs Good comment, but I'd have to see it to believe it. I would think that the magnetic (electric) power needed to stop the piston at the end of each stroke would far exceed the power generated in the preceeding (one) stroke.
@@retiredbore378 But the steam engine piston would still be connected to some kind of crankshaft which would help limit the piston travel.
Had a really interesting discussion with a friend, not certain what to think of it, so here I am trying to gather as much information as possible. Would really appreciate your comments on the same.
A single-motor Rear-Wheel Drive (RWD) Tesla Model 3 base model is equipped with a 50-kWh battery and a range of 272-mile or 437 kms per charge.
A 200cc motorcycle petrol engine generates 17-20kwh at ideal rpms with just 1 liter of fuel,
Not sure how it will work but if 3 liters of fuel is required to recharge a battery bank of 50kwh means the same Electric vehicle can travel 272 miles or 437 kms in just 3 liters of fuel.
Even if the fuel consumption is increased to 5 liters per charge means 87.4 kms per liter or even 10 liters per charge its still 43.7 kms per liter for a car. Whereas an average car travels only 10-19kms per liter.
So a combination of EV + petrol engine is way more efficient than only EV or only petrol engine vehicles?
No it’s not possible and the problem lays on your assumptions. 1 Liter petrol stores 9kwh of energy. In its tranformation to movement you loose about 70% into heat, so you get only ~3kwh out of 1 Liter petrol.
these discussion break my tiny mind 😅
@@niklasruhe2354 it is possible, i saw a working prototype & the test in person they used a regular 200cc engine set it at ideal rpms connected it to a gearbox and a 20kw axial flux low rpm permanent magnet generator from China and at 1 liter it generated 17kwh continuously. So your numbers are wrong
@@pcpatel01 @pcpatel01 an honda electric generator of 110 cc engine. Has tank capacity of full 12.5 liter and runs 7 hr on full load which is 2.8kwh. So total output will be 19.6 kw in 12.5 liter petrol.
So, 1.56kw per liter. And 1 liter of petrol generate heat of 9.37 kw of energy considering density of petrol 750kg/m3 45000kj/kg calorific value.
Don't know what Chinese are doing It might be some Nuclear power they are using OR might be your numbers can be wrong.
@shyamhingankar7442 read my comments properly and understand the basic working theory & difference between regular generators & a motorcycle engine connected to a low rpm axial flux generators. Well if you still dont believe feel free to test it both petrol engine & axial flux generator from China ate easily available & test it yourself the numbers are not wrong.
What controls the stroke and how reliable is it.
A 10KG engine supplying 30KW to charge a 20KW hr battery pack and 4 20KW hub motors. Build me one one of these! A great way to electrify an old Citroën DS.
When it will be implemented
How do you lubricate these engines, I can't see any way to do it.
aquaris is a hood design , how to get the central shaft move in friction less mannarr , ?
I think that to maintain my cruising speed in my truck I need 34hp. That would be very efficient in an hybrid system for my truck.
Going up hill, that's why car manufacturers need a bigger than 34hp to go uphill and accelerate you need 3-4 times more power or you will be creeping along at 15mph in low gear going uphill about to blow.
@@chrisbraswell8864I agree, but lets say I need a displacement on demand engine for when I need to tow or when I accelerate, there would be multiple free piston engines and the other cylinders could just rest and do nothing. Instead, the actual engines with cylinders deactivation keep the pistons moving creating useless drag and energy loss. Also these deactivation systems are often problematic. With this said, this concept would allow an efficient 34hp even with the option to have more power when needed.
Like all new technology there is a bug in the woodpile.......how would you push start an engine like this if the battery failed?
That engine is cool new tech that makes sense
not new, stelzer design and linear engines are old proven designs
Ele poderia armazenar energia em um banco de baterias para alimentar um sistema residencial off grid quando chegar em casa.
When we combine electricity and petrol engine than his efficiency is increased 50% we are using coil in the piston and magnet in the backside
I’m not sure this is the optimal movement of the electromagnetic field but a very cool design … I mean hot 😅
Of course it optimised as it's automatically creates a sine wave, trust me I did electronic engineering for over 30 years.
¿Qué pasa con los motores Stirling? Están probados, tienen una eficiencia calórica excelente y nadie los quiere usar.
Design is good but need some modifications to resist heat Transfer to center position since magnetic field may get weaker and efficiency may drop due to heat generated. Otherwise design is good and best to use with electric vehicle.we can also used as dual fuel engine with same model with cheaper cost.proper ventilation is must for good life of engine.
Hmm, how will it do comparing to liquid piston's one rotating cylinder.
Are these two-phase models? Is there a two-stage cycle? And do they need oil for fuel?
If it's a two stroke, it kind of does need oil, and there's no oil pump mentioned even though it could be electric or linked to the pistons
Isn't a fuel cell more efficient (~60%) and smaller? So why this? Thanks for feedback.
because fuel cells need hydrogen, which is a not-so-efficient energy vector, that requires expensive infrastructure for transport and storage, and a lot of energy to generate it, so the advantages in vehicle use are undermined from the disadvantages in the whole supply chain
10 kw when will they be sold as portable generators ?
Energy equals Economy.
And commerce equals market capture and maximum profit.
Cheap and readily available aren't going to marry commerce.
does this 2 Cycle engine need oil in the flue?
Generally you have around a 60-70% efficiency on turbos... so that puts your 40% efficient motor down to 20-30% efficiency once you add the electric motor losses as well
Turbos never made it to 60-70%.
Does it burns also a lubricating oil?
You need 4 pairs for balance in this first design. 2 pairs will create a see-saw rotation.
it is supposed the piston is magnet to produce electric power in the outer coil how they do it ?
So this engine looks like the only connection to the wheels is from generated electricity as the magnet behind the piston on the shaft moving backwards and forwards past a coiled wire set up.
SAE published not long ago, that under any circumstance, Loop, Schnuerle Scavenging is better than Uniflow Scavenging in 2-Stroke engines. Blessings +
I am wondering why this amazing design has not been implemented before? based on a previous comment, the Germans built a free-piston engine before.
Actually its an amazing design and is very promising for generators. The friction could even be further reduced by magnetic bearings.
How is it lubricated?
ok, but so... basically, those piston engines are only electricity-generators? Because I don't see how they could transfer mechanical motion to, say, the wheels of a car, otherwise.
엔진윤활은 어떻게하나요?
I read about such a system as far back as 1980
No hay piezas girando?? Y el cigüeñal??
when can I get a smallish truck running one? good price?
How it convert the pistons sliding into rotation ?
You are right but i think two opposite slides of piston can manage this problem too
Just forget these fifs. The revolution is already here 🔋⚡💪
These engines have no camshafts. How do they open/close the valves?
The gas springs will get red hot?
I'll believe it when I see it.
Super!
It violently vibrates, free piston engines can be made where the piston sits central in the middle instead of being spread out on the ends, which allows for variable compression rates as well
But can they power the wheels directly with this 42% efficient engine?
Your Aquarius motor could be adapted to an articulated arm above the sea water, this arm would react to the oscillations or waves of the sea water so that the back and forth supplies and produces electricity
How is it lubricated
You guys are missing the point. The revolutionary part is the lack of a crankshaft. Makes it more efficient and lightweight.
Very good designs which would make electric cars more useful after petrol cars are fazed out.
Wie wird der Motor angelassen? Was ist bei einer Fehlzündung oder Gemisch Fehler? Wie beseitigt man die Vibrationen?
Ich glaube es ist wie bei den Stirling Motoren, hohe Ansprüche und in der Praxis nicht erfüllbar.
B.S. The flywheel in a normal engine stores a lot of energy. Here you have to resort to a two stroke design, because the 4 stroke simply will not work.
Rica etsem altyazı seçeneklerine Türkçe dil seçeneği ekleyebilir misiniz ? Sizi anlamak istiyorum !!!
In Finland was free piston engine innovation "Sampower" but it didn`t reached to production level. They tried use it with hydraulics? In generator use, it micht be usable.
new engine , but I do not see the ROTATION ? what is about rotation the whees baruhović
A/C motor exists shorter than cycling engine, this can be same as a/c motor.
Like making a steam car, when all are converting to gas.
Gas cars are done. They are poluting, and in efficient. 50+% efficiency are just a dream, if you count pumping of oil, refining, transport, and all the infrastructure, and the cartel that control the price. But, it's nice to see the new technology, that newer will be used.
Vibration is still problem
AG solution eliminates vibrations - solution is ready for prototype manufacturing!
The first design think would be better as four stroke with solenoid valves.
Will it work using hydrogen ?
LiquidPiston rotary using steam// steam generator.. and a low pressure turbine before the condenser unit that feeds the steam generator at pressures up to 3100 psi
very good motor
Lots of concepts, it's reality when I'm a commercial application