Mainspring Linear Generator
ฝัง
- เผยแพร่เมื่อ 12 ก.พ. 2020
- Driven by its mission to advance global access to low-carbon, dispatchable energy, Mainspring has developed a new category of power generation - the linear generator - that delivers onsite, 24/7, fuel-flexible power at lower cost and lower carbon than the electric grid.
To learn more visit www.mainspringenergy.com. - วิทยาศาสตร์และเทคโนโลยี
Despite the claims, this is simply an engine.
Specifically, it is a
_two-stroke_ : entire combustion cycle occurs in one cycle (two strokes, one inward and out outward) of the pistons
_opposed piston_ : two pistons face each other in the same cylinder
_piston-ported_ : as in all opposed-piston engines, the movement of the pistons opens and closes the ports through which intake and exhaust occur
_free-piston_ : pistons are not mechanically constrained such as by a crank or cam mechanism
engine
In this simplified view, air-fuel mixture magically enters the combustion chamber, flushing the exhaust out. In reality, as with any externally scavenged two-stroke, there will be a scavenge blower which is not shown here.
The best-known opposed-piston engines in history are the Jumo designs from Junkers, starting in the 1920's, and the British designs (such as the Commer Knocker and Napier Deltic) that were derived from them. Recently, Achates has been attempting to revive the type, most recently in collaboration with Cummins for the Advanced Combat Engine (ACE). These engines all have crankshafts.
Free-piston engines have never been mainstream, but they can potentially make sense to drive linear generators, and many companies have tried it experimentally or in (generally failed) production attempts... even Toyota, which called it their Free Piston Engine Linear Generator (FPEG). Traditionally free-piston designs have been used to pump fluids.
Agree. Kind of seems like a diesel engine to me.
Oxidation reactions of hydrocarbon fuels will always result in carbon dioxide or carbon monoxide emissions. If it occurs at low temperature to avoid generation of nitrous oxides then the thermodynamic efficiency is greatly reduced. How does it achieve the activation energy necessary to initiate the oxidation of hydrocarbon fuel if it operates at "low (maximum) temperatures".
Nice demo, thanks.
So there is compression induced combustion going on right?
This is a reasonable solution - can work because no vibration problems!
All opposed-piston engines are balanced.
Interesting concept with credible team and investors. However, claims of "high efficiency" without stats doesn't give confidence. Can't find any data on your website either 😕.
Hi Mainspring these are my suggestions
#1 Scale down the linear generator for applications such as offgrid power source and range extenders for electric land and marine vehicles
#2 Have them able to run on liquid fuels such as Ethanol and Methanol that could be made offgrid as another option to natural/biogas?
#3 Also the major ports in Scandinavia and Singapore are moving towards lower emissions in the marine industry and are eyeing to become Methanol bunkering hubs. This tech if able to run on Methanol could be how the Marine industry moves to electric propulsion with an onboard linear generator powered by methanol out at sea!
All wonderful marketing suggestions, Phat ... Thank You ...
With all of the violent vibration from the center explosions, how do you prevent the magnets from demagnetizing from the shocks?
An electromagnet can be used instead of a permanent magnet. A brush is used to transfer electricity to the rotor.
There is no explosion, not in this engine or any other ICE engine -- there is only rapid combustion which is not the same as an explosion. Additionally, this engine is not using high pressure or high temperature so the power stroke is less energetic. The operation using a long stroke is good for efficiency and since this engine is not directly connect to a drivetrain as in a car it can operate at near constant rpm. Lastly, the fact there is one combustion chamber with two opposed piston and that those pistons operate in opposite direction cancels out the vibration.
It would have been nice if they'd provided details on actual efficiency, what the actual efficiency is, and what the power output it is. Also, how long in operating hours before maintenance is required?
the not-an-explosion combustion is just like any other engine,@@Raptorman0909
That is unnecessary, and the brushes would substantially reduce reliability,@@hamzaterzi8801
So where is it?
yes, well, we can all achieve modern miracles using 3D cad packages. How about you show us a working unit in real life, and give us some real stats.
They already have units in place for backup power at Walmarts and Home Depots
@@wilco3588 Then lets see videos of them. 3D representations are the hallmark of scammers.
They have made some production units. An operational description of any machine is usually best done with an animation to show the internal components, even when we are surrounded by real working examples.
@@brianb-p6586 I don't care. If I'm not seeing the real thing, next to the animation I'm calling scam. A purely 3D render is the favored technique for all these modern day scammers trying to steal investor funds.
Such an awesome video.
What is the cost for the installation of 250kw?
10000000$
NOx is venemous and is also a green house effect gas....what is the fuel used, and what is the wheighed output per hour of NOx?
Right why not hydrogen?
If hcci was as simple as is being described here it would've been done ages ago. Unless there's some control breakthrough or stringent fuel requirements this is just a concept
Some comments and questions
1) IMHO, this is a linear diesel engine ... Why do they call fuel combustion a "reaction" ?? ....What the hell is it ?
2) Like all IC and diesel engines, heat must be rejected, or it will build up ... How is the combustion chambered cooled ?
3) What are the limitations on diameter and length of such an apparatus ?
4) Unlike any other machine, magically, no lubrication is required .... What MBA is making this claim ?
5) How long has the prototype been tested ? .... are there 100, 500, 8000 hour test data available ?
6) How long will the magical sliding surfaces last in real-life testing ?
Hyliion Karno
I 'm sceptical bout this working without lubrication an both air springs having exactly the same bounce . A tiny difference will result in the two pistons being out of phase. There have been many similar designs in the past and to date none has made it to mas production
Interesting, how do they synch their cycle ?
(e.i: combustion engins use a crankshaft)
I was thinking the same thing. maybe it has to be primed, then started and it maintains timing by what I can only guess is a perfect balance of weight and air pressure.
The output is most likely rectified. No problem with ac synch.
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Please- take it somewhere else.
In refrigirator will be useful
Nothing was said about the efficiency of energy conversion :)
So is this a rebrand of Etagen or did they steal it? Cos it's the exact same video.
Yep, rebrand
@@ZazHarrisZaz Different name, same BS
How does this run without spark plugs ???
Compression ignition. It's very common.
@@tristanjones7735 Yes, it is common... and it's called the diesel cycle ... and it requires COOLING !!!
@@michaelcronin2039 Cooling is a "detail" omitted from this description... just like the scavenge blower, fuel system, etc.
what about second law?
Can someone explain this "flameless, low temperature reaction"?
Compared to a low compression cycle where you need a sparkplug to ignite the air/fuel mixture, flameless combustion occurs when the compression is higher and all the combustible material ignites at the same time as a consequence of temperature and compression. In this scenario, there's no flame that needs to spread to burn the fuel. Everything ignites at the same time and you have complete combustion. The "low temperature" part is less clear, I guess low is relative.
@@EK4B16A2 Perhaps it just means it will run more effeciently with less fuel required. Initially the bloomberg article is somewhat missleading, it's written as it was pure clean energy with it isn't if it still requires any amount of fuel. Great if it's 1% or 50% of a combustion alternative, it was just wrote up very vague by bloomberg in my opinoin. Quick seearch on google and you can find little information about this company. Is this actually new tech or just a re-use of a differnet piece of engeneering?
@@SHIPIT01 I was derived from an S&P article. The main argument was that is a low capex technology that can ramp up very quickly and is cheaper than ICEs. The ideal solution for backup support.
burning buffalo dung?
@@michaellange6598 It's been around for over 50 years--getting perfected over time. In India it's 'gobar gas'.This gas is also produced by garbage landfills-mostly methane.
I found this because i had this idea. Do you have a prototype?
They have production units. You're decades late with your idea.
air spring ... when compressed it will heat up ... how on earth will that provide enough power for the next compression stroke ...
The heat might be used for other application, in case of a house it can heat water.
@@liamvf4461 what powers the compression stroke .. ?
Initially it would be generated either by adding electricity through the linear generator to get it gone and then it becomes self-powering.
As for "How" it's because the oxidization reaction /combustion provides the pressure to slam the piston away and then the air spring functions as a miniature compressed air energy storage system until it rebounds from the heat generated by the compression itself.
It's essentially a compression stroke with no outlet so it rebounds back.
Naturally you need to input more power/fuel than the required power necessary to simply drive the air piston but using air pistons in free piston engines goes back well over a century. Heck even Nikola Tesla's "Earthquake machine" that he used to create a high Hz alternator was an air spring using steam as the motive fluid.
en.wikipedia.org/wiki/Free-piston_engine - Covers the broad concepts of Free-Piston engines.
en.wikipedia.org/wiki/Opposed-piston_engine - Is what *kind* of Free-Piston engine this is, just using an air spring in lieu of a crankshaft as the linear alternator eliminates the need for mechanical connections.
en.wikipedia.org/wiki/Tesla%27s_oscillator - Tesla's oscillator was used as a steam-powered non-opposed version of precisely this.
It's a cool idea that a *lot* of different companies have been exploring for decades. Some use mechanical springs though.
If it is as good as this presentation says, WHERE can I purchase it???
Hyliion karno
@@Strength_CoachHQ While Karno is also a linear generator, it is an entirely different type of engine. This is just an opposed-piston internal combustion engine; Karno is an external-combustion hot gas engine similar to a Stirling.
It looks like a giant shake weight 🤣
Or a double lightsaber haha
Two of them, end-to-end, moving opposite directions.
next gen Mainspring Linear Generator for nomad ?
I saw the 250kw version. I’m very interested in a smaller residential version either 15kw or 20kw size using natural gas please. This would be a game changer. No oil changes or spark plugs. Please let us know availability and pricing for residential!! Texas is depending on your company especially after the winter storm in February. Thank you in advance!
I'll buy one as well. Your electric bills will be lower and you'll never have an outage. Plus, you'll already be set-up for when hydrogen is substituted for natural gas, as prices approach parity. As this is Mainspring's TH-cam channel, they will see the huge pent-up demand if potential customers post here, so spread this information far and wide.
@@dz20854 You are never going to see hydrogen. It will be ammonia and yes it works with ammonia.
Where is the test data where the unit operates under load for 100, 500, 8000 hours ???
So with small amount of hho gas you can create 1000x more energy? Input 12v to convert water to hho to generate kW?
No.
It looks fancy, but it's nothing more than a conventional two-stroke combustion engine that also has other disadvantages:
*Instead of one piston per cylinder, there are two:
- thus twice as difficult to keep the combustion chamber tight
- twice the friction loss
*Instead of flywheel mass, an air spring is used on both sides:
- Sealing with higher friction losses compared to a flywheel bearing.
*Linear bearings instead of rotary bearings:
- higher masses to be accelerated (entire long piston including induction internals instead of just the lightest possible piston that transfers its energy to a rotating system)
- Lubrication more costly due to the back and forth motion
- Overall higher friction for the same design (no lubricating film is formed because the bearing keeps accelerating and decelerating to zero)
Fuel cells have around 60% effciency, 2-stroke engines just maybe 20%. This seems not to be efficient and clean to me.
I think your analysis of linear vs rotating is fair. But some points don't make any sense. Higher mass is not an issue for a generator that don't need quick response, and the lack of a flywheel means mass is lower anyway. Two, they are using air bearings, so they have a fluid bearing that don't require piston velocity to work, so friction is probably about the same as an oil film.
Also, having "twice the friction loss" from having two pistons is preferable to having one piston and shaking itself to pieces.
Your comment is spot on I dont know why others think this would work. While 2 stroke diesels can get some pretty high efficiency all the emissions talk is nonsense. Low temp equals low efficiency I mean thats carnot in a nutshell. More lies and hype to steal peoples money.
Dongle, ... I basically agree with you, /but also bear in mind that this may be the first machine known to mankind that requires "No Lubrication" !!! .... ( Also known as magical MBA lubrication !!!... or We will fix it later !!)
Yes.
The two pistons are traditional configuration (opposed piston) which has been used for almost a century.
The air springs and free pistons (instead of a crank) is the classic free-piston engine type.
But good 2-stroke engines (not the one in your chainsaw) are far more than 20% efficient. The most efficient internal combustion engines in the world are very large two-stroke diesels (such as those in large ships).
The moving magnets could be controlled be electronics. Just keep the springs for startup.
for investors who are bad at math!
Also known as the perpetual motion machine