MAZDA SKYACTIV-X SCCI Engine (SPARK CONTROLLED COMPRESSION IGNITION) ► How Does It Work?
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- Опубліковано 24 жов 2017
- Spark Controlled Compression Ignition ("SPCCI") is Mazda's proprietary combustion method that enables a seamless transition between compression ignition and spark ignition.
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MAZDA, please continue your research and development program. Engines like this may still play a significant role in the future.
That's funny.. Every other major car company will have multiple electric cars available in their lineup by the time they release this 4 cylinder engine. And with the disaster that was their rotary engine, buyers should stay away from the first gen..
Posk Lamoureux Their rotary engine was less reliable due to being a rotary engine, and a first gen one at that. Much bigger difference than with skyactiv-x.
Posk Lamoureux disaster? What?
Also: this engine already exists. It will be mass produced and fully available within max 3 years
Posk Lamoureux rotary engine was designed for power, it burns oil inside the engine and has lots of different temperatures happening inside the engine hence it's unreliability. This car is a different beast
Gewel ✔ it’s going to be in the 2019 mazda3
Great technology. And congratulations to whoever composed the background music, is great!!👌
Other than the wankel rotary engine, this is most genuinely excited I am about an engine.
The key is that with use of both super fast piezo injectots, variabile valve lift/timing plus with all bunch of sensors like cylinder pressure sen, oxygen sens in the exhaust, knock sensors you can control compression and combustion so precisely that you go up to the very edge where knock will occur. Meaning you are just a bit bellow knocking and spark just pushes you after the edge. A d when it does combustion occurs simultaniously all over the gas fuel mixture rather than with a fireball like on regular otto.
Had a 323 as my first car, bought with 175000km sold with 345000km and saw it again with 415000km on internet, never had any issues with it ! Mazda was a very reliable brand back at the time, dont know if it's still true at the moment with all the multi brands conceptions you know (peugeot with mazda, what a joke) :)
Wow, this technology is amazing. I think the first new car I might buy would be a Mazda with this skyactive-x technology
Bravo Mazda i always had deep love for them
I am really impressed great technology
Just a random question, but is this also achievable with E85 (I'm not sure, but gasoline is way more volatile than E85)? If not, than would it still be possible with a higher compression ratio? As far as I know, E85 also has a higher octane rating.
The small spark pushes the contents inside the combustion engine to a higher pressure and higher temperatures. As it exceeds the compression egnition threshold, all of the mixture undergoes spontaneous combustion. Of course all this is very fast.
Will octain rating of the fuel have any effect on it?What about turbo or supercharging that engine
Trolls don't bother watching the video before criticising it? "Directly spray fuel into the compressed heated air" That IS exactly how a diesel engine works. The video shows diesel as SCCI not HCCI. That's why the fuel pressures are much higher. Probably what you are forgetting is the compression ratios are higher than normal in Skyactiv-X. Around 15-16:1 with low octane gasoline compared to 8-10:1. Diesel fuel takes alot of compression to "pop." Anyone running cheap gas in a boosted engine will tell you how easy it is to make 87 pop/ping/knock. It does use direct injection to get fuel in the chamber, and uses combustion to increase compression inside the cylinder. To the point of controlled knock. Its all about tuning and timing. A hint would be looking at how the piston shape makes a much smaller volume at the head vs gasoline.
It's a better explanation than the video. So, the Mazda is using volume detonation of a fuel/air mix after sharp pressure increase from a pre-ignition section of the combustion chamber with a spark. Well. In a diesel engine the fuel/air mix is not homogeneous and burning is slower. But would detonation instead of combustion be not harmful to the engine? I mean, shock waves from detonations that propagate also in metal parts of the engines instead of a more smooth pressure increase in a diesel engine or a benzene engine with Direct Injection. Not to mention complexity of the timing control. Shorter times for detonation may increase efficiency of the engine at very high rotation rate (at high cost of reduced operation times) but will be of no help at lower rates. Will such an engine be in operation as long as a diesel engine? I believe it will not. So, it is a shitty idea.
Oleg Kulikov at low revs it behaves like normal gasoline engine
timing is nothing with todays electronics
And we have really good materials that dont cost fortune that will EASLY withstand the forces
@Razvan J Citing fuel economy figures from VW? Hahaha … they lied, that's why their engines produce such *efficient* figures
@Razvan J Care to show me the website?
I love all these comments from people who know nothing claiming that this is not a revolutionary idea. Ignorance.
It's not required to be mechanic to understand that there's nothing revolutional shown in video.
It’s pretty impressive on how lean the engine can run efficiently though
No one said its revolution in the comments, its literally efficent petrol engine and has some diesel engine qualities it says. I dont see any revolution
I honestly thought this was hydrogen injection before watching it
The idea may not be new, but actually mass producing such tech and implementing in such a wide way is action is and should be seen different from talk/speculation
The automobile itself has been around since the over a century the late 1880's, but Henry Ford is credited with the making the modern car with the Model T because he took inspirations and brought them to market
The opposed piston and axial engines are incredible designs better on paper then most we currently use, but they have pretty much stayed on paper hell you probably have never herd of them, and it won't until someone actually brings them to proper production we see the real benefits
the comments tho are actually cancer with all these people who apparently know so much about this engine
Gerrad Reynolds Should probably put speech marks. And I agree with you.
...Saludos a todos, ha sido un excelente Video para un Mazda 3 BK 2.0 Sportive 2004 150 CV Manual Gasolina, yo tengo uno como Propietario y en 11 años sin fallas ni tampoco visito talleres solo para el cambio de lo gastable y revisiones por Ley, por eso Mazda es todo una fiabilidad y una satisfacción poseerlo, ahora pasará a uno de mis hijos , se pintará nuevamente y se tendrá con nuevos neumáticos y este detalle de hacerlo pues los contactos del Selector de ventilador quiero revisarlo y limpiarlo, en fin a estos Mazda solo echarle gasolina y cuidarlos bien no dan fallos y son excelentes máquinas en todo; gracias a esa mano japonesa, ahora comprare después de estos once años con muchos viajes Galicia-Madrid en 24 horas sin fallos en absoluto con vientos y tempestades cortando los acuaplano como todo una bestia sin parar ; imagínense ahora el NUEVO MAZDA SKYACTIV X 181CV 133KW Manual con Sistema i-Activ AWD(Tracción 4x4) con Equipamiento Zenith Safety Red y Pintura Metalizada Soul Red Crystal , solo que tenemos una Plataforma Mazda España para sugerir que la nueva NEGOCIACIÓN con Mazda Japan en Hiroshima tengan en cuenta que para Septiembre 2019 este Modelo Mazda Skyactiv X 2019 para España ; tenga OPCIÓN DE TECHO ELECTRICO ó TECHO DE CRISTAL, ojalá sean sensatos en esas decisiones Comerciales y de Márquetin para los USUARIOS MAZDA ESPAÑA...FELICIDADES MAZDA ; ENHORABUENA, verás que venderás mas de un millón de Unidades, solo observan al EJECUTIVO MAZDA ESPAÑA es la verdad; pues es hay buen camino con estos años de estudios al MEJOR MOTOR DE COMBUSTION POR COMPRESIÓN EN SUS CÁMARAS EN LOS ULTIMOS TIEMPOS... Cliente Mazda siempre¡ 25 de Junio 2019.
super video and technology please tell me what is the bgm used in the video please give qink or name
the comment section is way better at explaining the engine
I am impressed by the deginer
Very well made video.
Wow, Mazda is pretty clever! They really are combining the petrol and Diesel engines.Too bad it’s poorly explained because there’s a ton of confused people in the comments. Pay close attention and you’ll understand it (:
So is it just a high compression motor?
So it's like a Hemi head with a pyramid domed piston top? Giving a really good squeeze? I wonder what the compression ratio is? And does the spark plug fire after the squeeze ignition occurs?
from what i've heard the compression ratio is somewhere around 16:1. The spark plug causes a small combustion event at the top of the cylinder and the extra heat and pressure from that causes the rest of the fuel to combust. So no, the spark plug fires before the compression ignition.
I think this is similar to Nissan VC-T engine but without extra compression changing mechanisms parts weight. By tuning the spark size at the right time or angle and raising compression ratio to achieve something similar to compression ratio changing things. This is brilliant.
Correct me if i am wrong :D
Mazda has always been cutting edge and not afraid to try new ideas.
MB4LUNCH ccg nb
Nn
H
Gn n
Pun intended?
Hi does this engine use the spark from the spark plug all of the time, I'm a bit confused, some people I've spoke to say under spark controlled compression the spark plug doesn't spark ??
I fucking love you Mazda as a fellow mechanic down here in New Zealand
Skyactive all day everyday!
Nothing to prevent carbon build up on back of intake valves?
It’s still better than other DI engines because combustion is more efficient.
It's true that this idea is not revolutionary. The real difficulty is to make it commercial. GM, Toyota, and Daimler tried but didn't succeed yet. Looking forward to seeing this engine on 2019 Mazda cars.
This might change the future of not only gas or Diesel engines but also hybrids and electric cars
The Comments section is absolutely amazing here. Everybody complains about this engine and how it still burns fuel.. Well, should it run with air? Electric cars arent that environmentalfriendly aswell.. I also love the fact how everybody knows how long this engine lasts until it breaks down..
Great Innovation from mazda. :) some people here does not know the greatness of this innovation, most of them are just wanting boost and speed. Gas and Diesel in one? Mazda Got Us :) (other companies envy this innovation) :3
Un fabricante con ingeniería única e innovadora. Tiembla TESLA (e imitadores)
Sueña, lo coche electrico son el futuro
its very cool
This technology by mazda is powerful without any turbo charger
Skyactiv x engines actually have a supercharger fitted but mostly to achieve the lean air fuel mixture. It drives like a naturally aspirated engine though and it's not a racing machine. It's mostly economical.
So dose that mean that the engine can't handle much boost because of the higher compression rasio??
Mazda make very refined engines of late.
It will be interesting to see how reliable it is and if detonation will be a problem.
Scusate la mia ignoranza ma la alfa Romeo non ha già fatto questo su il motore Twins Park?
Beatidul
What's the first music? Can anyone knows?
How does the wear on the cylinder wall after 60k miles?
the same of each other diesel engine..
250,000 and counting on mine . Not using a drop of oil
What's the different from Direct Injection Petrol Engine???
OokTiaopi masda shuts off the spark at the right temperatures
Carlos Leon Well, i see... A knocking Engine without knock.
F1 car had been using it since 2014 called the HCCI ( sfCI + HCsi ) to compensate with a tight fuel regulation resulting in increase of overall efficiency making it sitting around 40% of overall thermodynamic efficiency close to that comparable diesel engine thus significantly increase its power output for a given engine with a small displacement.
I was under the impression that under normal low load circumstances the Skyactiv-X would operate on compression ignition (e.g. ignite air fuel mixture without a spark) but instead of diesel fuel uses gasoline. So diesel like operation but without the NOx or CO2 emissions of the latter. The spark plug would only activate during Cold starts, low ambient temperature and high power demand situations.
Trades46 yeap
Thing is though, how many miles can the engine go without losing its necassary compression?
Mazda use ~the same process found on twin spark engines with some improvements (stratified injection)...
Yes, stratified injection that was the first word that clicked in my brain.
So it's basically sparking at Top of stroke to make higher compression. Couldn't you do that to any other car by advancing the timing?
jasonsteiner57 you won't see 16:1 no matter how hard you try.
Nice idea. But what is the cost of additional compression in lost horsepower?
Higher compression means more horsepower.
@@ItsNotAProblem There is a lot of energy used up to compress the air during operation. They even have engines that use little compression. They fire after top dead center. They have high efficiency.
Well then I guess it changes combustion modes with the onboard computer for optimal performance then
Bring it to India. Fuel efficient cars top sales.
@George Stam na. people are too lazy these days to ride bicycle and donkeys ..
Lol if you can afford it.
@George Stam Stop living in stone age you dumb and go do some searching on Google
@George Stam Absolute Madlad
I wonder what is sounds like
Mazda has the best overall fuel economy of any automaker without making a SINGLE hybrid or cvt car. Now THATS engineering
Today I saw this SKYACTIVE written on a Mazda car on the way while I was driving and i was just wondering in my thoughts what could it be? and now Im home and just casually clicked on this "recommended" video that presents this technology... Now SOMEBODY TELL ME THAT THIS IS A COINCIDENCE!! Nope becuz these creepy things happened to me before several times!!
Lotaty sater tern.✌🏽✌🏽
the music please
In theory it would have to be built as strong as a diesel motor, or it would tear itself apart like most of the modern little turbo 4cyls do
All you need is a quicker and hotter sparkplug to produce this kind of ignition..the timing of spark firing and a higher compression ratio of piston is the key..why new, it's old and most racing mechanics uses this for higher torque and power
In the divided combustion chamber approach:
ua-cam.com/video/jgIDbHOosFE/v-deo.html
there are two cooperating combustion chambers: a small auxiliary and a big main.
A high compression ratio is used in the auxiliary combustion chamber.
A moderate compression ratio is used in the main combustion chamber wherein a homogeneous air-fuel mixture is compressed / heated near, yet below, the auto-ignition threshold.
The high compression ratio in the auxiliary combustion chamber causes the auto-ignition of the homogeneous lean air-fuel mixture therein (no spark plug required); the burnt gas bursts - through some "transfer ports", just before the TDC - into the main combustion chamber triggering its auto-ignition.
The engine needs not be structurally stronger.
I can see over pressure and blowing out of spark plug threads in the near future
"the ice is dead" mazda: "holup"
Gerrad Reynolds yeah it's dead. Sure thing. What world are you living in? Even with companies hybrids and electric vehicles Mazda is the only company meeting the 2019 cafe standards for their entire lineup.
Please someone explain me. If it has a spark plug, how come that we call it compression ignition? So this engine is simply a normal gasoline engine with spark plug but with higher pressure in its chamber. Why is it so revolutionary?
what is the % improvement ?
3 % ?
Thermal efficiency is ~53%. Skyactiv G has something around 40%.
New rotary engine pliss
Check out “rotary diesel engines”, i think rotary engines are fit for diesel, because diesel doesn’t need the engine to have higher revolutions than gasoline.
Could have just said "higher compression and conical piston" instead of making it sound like you just reinvented the wheel. That top notch of the piston will get hot fast so better hope your cooling system is on point
*Edit*
Also with such a high compression ratio and a hot tipped piston you'll have to watch out for preignition sapping power and possible knocks
Reply to the edit: That's why you use high octane fule.
wait for the one from my colegue
when Cold start like a diesel engine. Its hard to start without glow plug
Rotary is a 2stroke engine wich creates a lot of smoke. I think its harder to make these engines to achieve euro 6 or newer standards.
mazda technolohy is best ,🚗
What would be nice is to extend the lifespan of gasoline engines so its less of a burden on future generations who eventually have to give them up. make them as efficient as possible so the paradigm can shift slower.
High compression rates.... That would be awesome when using ethanol!
Ethanol, so boring!
@@bitTorrenter Yeah... you can also use a mixture of chloroquine and azithromycin. 👍🏻
Not bad
I want to see more rotary engines, with a better fuel economy
It will exist as a range extender for electric cars.
It may sound like nothing to people, but this means they are putting it back to production, and it means that they will work on improving it, Mazda is up on something
How goes your rotary engine? :D still breaking those apex seals? How about the fuel efficiency? Still a gas guzzling monster ?
Haha, this will fade away just like that rotary engine
Squeeze compression like no other squirt direct injection in spiral pattern. Spark the ignition between the intake as far as the output valve. Ok noted.
That woman's voice tho don't know what she sayin but it's as beautiful as watching flames ignite
So... the fireball is connected to the internet, and gets updates over the air.
Great idea pushing technology to it's limits but doubt if anyone will ever get a petrol-fueled engine to act like a diesel.
Ok, so I initially thought this engine had two modes, diesel like (no spark) and petrol like. What I see here is just an upgrade of the spark plug, to create a small "fire ball", instead of a spark, given higher compression ratio. Interesting, but also not very revolutionary.
I'm confused, because in the video it just seems like they're making a high compression engine
2:27 song? Pleaseee
Fabrizio Magazzù did you work out what song ?
For years, I knew that gasoline "fuel injected engines," were capable of operation without sparkplugs just like my diesel, just had an argument today, I look up just about everything else, don't know why I never looked it up before, See I'm correct once again!
neat similar thing has been used in formula 1 since 2014
So glad we can drive those on an everyday basis...
Tyler Lietz if it wasn't for race, super car and high luxury car tech we would still be stuck in the 60s they show what we can do and cheaper car brands standardize it
*because f1 cars are daily driveable and street legal*
These comments are funny. All it takes is a google search to find out that this is a great step towards a longer future for ICE's. Any innovation is better than nothing. And this is the first generation of this engine. It can only get better.
Not understanding something here. How is this a compression petrol engine when it still requires a spark? Am i missing something here?
If car manufacturer were serious about the environment than they produce engine that would be used to charge generators that would charge small battery bank and capacitors and there would be electric motors in wheels. The most effective way to utilize Internal combustion engine is to generate electricity and use it to power the car. IC Engines can go up 30-40% in efficiency just by generate electricity...
What they want is, a car that is both fuel-efficient AND fun to drive. Series-hybrid cars are NOT fun to drive. Remember mazda's slogan "Zoom-Zoom"
SKYACTIV X is a great solution, but not new. More than forty years ago, the MAN company produced the high-compression "FM" engine with spark ignition. This engine worked with all fuels, including super-gasoline. The efficiency of the SKYACTIV X engine is similar to that of the diesel engine and is not better. The use of high pressure injection and the use of a PM filter suggests that the emission of pollutants (NOx and PM) is similar to that of a diesel engine. I think, to achieve higher efficiency Mazda can be achieved with a new solution: ua-cam.com/video/sknk3RrolSc/v-deo.html The emission of pollutants can also be reduced by injecting non-tiny fuel droplets but high-pressure superheated fuel, which will immediately become gaseous in the cylinder. (See the same.)
Source book: Heinz Grohe "Otto- und Dieselmotoren. Kurz und bündig" / Vogel-verlag, Würzburg, 1973. Where „FM” engine: F=Fremdzündung (spark ignition) M=Mittenkugelbrennraum (central spherical combustion chamber).
2:24 I'm only interested in the BGM...
I believe that mazda is using gasoline vapor or mist to compress that's why have so much efficiency and power to compare diesel engine
To me it sounds like engine knock
hmmm
Ok so the compression ratio on the current mazda engines is high as hell it's like 15:1 or something crazy what's this going to be 25:1 that's why they need the supercharger and I believe it's twin turbocharged as well cause the engine makes no power on its own
bearcat vidz 13:1 bumped to 16:1
3:26 thumbnail
4:30 - 4:40 is enough to explain
Well, Infiniti (Nissan) released a Variable Compression-Turbo engine.
I need 200hp+
When i looked at all the comments i realised that i was right that i was thinking... What the hell is this
But i dont think mazda made this movie.
That diesel engine hahahahahahah
#sparkcontrolledcompressionignition
As mercedes bens
It’s committed to environmental issues yet chooses to enhance the internal combustion engine rather than going electric.
Aaah.. It is just a really high compression engine with direct injection. With the plug getting it going initially when it's cold.