[OT] How does the cylinder of this crankshaftless engine bounce back?

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
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daniellammers
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Joined: 17 Dec 2016, 14:22

[OT] How does the cylinder of this crankshaftless engine bounce back?

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Just saw this article from 2014 (Dutch): https://www.autoblog.nl/nieuws/toyota-e ... otor-66909

If you scroll down a bit you see an animation. My question is: How does the cylinder bounce back? Is there a spring I can't see?
You won't catch me driving a race car that I have built.

- Colin Chapman

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MtthsMlw
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Joined: 12 Jul 2017, 18:38
Location: Germany

Re: [OT] How does the cylinder of this crankshaftless engine bounce back?

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It says gas spring right in the animation :P
https://en.wikipedia.org/wiki/Gas_spring

daniellammers
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Joined: 17 Dec 2016, 14:22

Re: [OT] How does the cylinder of this crankshaftless engine bounce back?

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MtthsMlw wrote:
30 Dec 2019, 13:21
It says gas spring right in the animation :P
https://en.wikipedia.org/wiki/Gas_spring
omg this is embarrassing. Did not see it, sorry!
You won't catch me driving a race car that I have built.

- Colin Chapman

saviour stivala
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Joined: 25 Apr 2018, 12:54

Re: [OT] How does the cylinder of this crankshaftless engine bounce back?

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daniellammers wrote:
30 Dec 2019, 12:57
Just saw this article from 2014 (Dutch): https://www.autoblog.nl/nieuws/toyota-e ... otor-66909

If you scroll down a bit you see an animation. My question is: How does the cylinder bounce back? Is there a spring I can't see?
It is the 'piston' and not the cylinder that bounces back.

Tommy Cookers
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Joined: 17 Feb 2012, 16:55

Re: [OT] How does the cylinder of this crankshaftless engine bounce back?

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free piston engines aren't new - they were the latest thing just after WW2
in effect a gas turbine without compressor stages and burners

what is relatively new is the power extraction by linear electrical generation
(replacing earlier arrangements which could be like the F1 turbine and MGU-H)

I expect the linear power route includes electrical drive as well as power extraction
otherwise bounce pistons aren't perfect in behaviour and controllability

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