Interesting engine design

[notbike]

Found it interesting

https://www.facebook.com/video.php?v=10154960288155112

[RhynoCZ]

It's way too complicated = expensive to produce and maintain.

RTU engine - https://www.rtugroup.com/animation
Specs:
5-cylinder Turbo 2.5 liter
Power: 598kW (814 HP)
Torque: 1.000+ Nm (dyno limit)
Radiatorless Water System
Exhaust Gas Temp. 351°C
No catalityc converter needed
1.850 rpm - 115km/h - 5.3l/100km

Not sure if fictional or real, but there are videos from testing all over the news in Slovakia, so who knows? They even got money from the gov.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[CieL]

[weasley]

I like different ways of doing engine, and this is interesting. My first thought is about the constant radial thrust that each piston will exhibit on its cylinder, caused by the rotational motion of the 'block'. One must also wonder at the rotational inertia of the whole thing, and the resultant reactional torque. I also wonder how scalable it is? Can it lose pistons and still run? A recip engine can be any number of pistons.
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Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[hmmmnz]

there are vids of it running on youtube as well,
https://www.youtube.com/watch?v=cTpPBiReaZk

its a cool motor, and has been pretty thoroughly tested,
it'll never be viable for a car, its more for trucks
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[goto10]

Anyone remember the ceramic engine design? I remember reading 10+ years ago that they'd revolutionise the way engines were made - nothing expands when it gets hot, so everything is made to extremely fine tolerances and it didn't need water cooling nor any oil to lubricate it. I'm guessing by their glaring absence that there were massive downsides (Cost/weight?)
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'12 NC700S & '12 CB600F Hornet [Stolen by some dickless twat] Suzuki GT500 shed

[The Shaggy D.A.]

[Triton Thrasher]

[Rogerborg]

[goto10]

[hmmmnz]

yeah rotorys need the apex seals done pretty regulary,
but its an easy job, whats not easy is pulling off all the gubbins that are now attached to them,
back in the late 90s i had a rx3 bridgeport 13b, no turbo, no fancy electronics,
just a webber carb,
the engine could be pulled out stripped down seals done and back in in a couple of hours,

biggest problem with rotarys is the fuel efficiency, there is none
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[weasley]

As suggested above, the love affair with recips means that they have attracted the lion's share of the development funding over the last 100 years. The Wankel has had a tiny fraction of that development, largely because it has been pushed by only one OEM, and in only one car at a time. If it had had the same development, maybe it would now be reliable and efficient.

We've gone too far down the recip road to embrace any other kind of ICE until the EV (or whatever) comes along.
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Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[Triton Thrasher]

The revolving "magazine" with the pistons has to seal against the end plate that carries the plugs and ports.

Failing to prevent wear and failures there is going to use up most of their money. The rest can go on motor show extravaganzas with model girls. Then they'll give up.
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Rrrrrrrrrrrrrrrrrr

[RhynoCZ]

[Rogerborg]

Mmm, I expect the next tranche of development will be camless with solenoid valves, if only because it'll help with scamming emissions.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[spikenipple]

Christian von Koenigsegg has developed a very interesting looking pneumatic valve system which him and the dev team at Koenigsegg have had fitted to a Volvo. If I recall correctly there is a Youtube video of him saying that the car has covered over 200,000 miles without a fault. The valve timing can be set precisely how they like at any given parameter range (throttle opening/RPM/load etc).
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C50 > GN250 > XJ600 > SV650S K7 > 2001 RSV Mille R > MT-09, XR400R > 2005 Fireblade (trackbike) + 2022 MT-09 + ZXR400 race bike

[Grizly]

Yes, seen this before as a hydraulic pump and also (a long time ago) as an engine in a torpedo - can't remember the fuel but it must have been a monofuel with it's own O2.

Only needed to work once but went like stink.
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Wohoo!

[Triton Thrasher]

[Rogerborg]

Solenoid, hydraulic, yes. Cams have had their chips, although Honda will doubtless push their VVVVVVTEC as far as it shall go.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[goto10]

[RhynoCZ]

I know this might sounds stupid, but are two strokes dead? I mean, there were no moving parts in the head, extremely light yet powerful units and so on.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Rogerborg]

[P.addy]

This is what we need.

https://www.lotuscars.com/gb/omnivore-interactive-animation

[Pete.]

[Just_James]

2 stroke should be the standard for all engines

Yeah we'd all be breathing in a lot of barely singed hydrocarbons.... but what better smell is there?