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what if an engine had 2 sets of cylinders?
one set that has a short stroke with a wide bore and another set that has a long stroke with a narrower bore but both sets get the same displacement
I'm not at all an engineer but I assume that this would provide a better balance between high revs and mid range torque even without forced induction
Honda and Hyundai have patented engines with different sized cylinders but the strokes are all the same across the crank
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>>17842634
You'd be limiting yourself to the rev's of the longer stroke ones and wouln't be able to effectively use either the longer or the shorter stroke pistons
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>>17842634
That would be extremely hard to balance
it would shake itself apart lmao
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You might be onto something. Just add Direct Exhaust Injection and it's perfect.
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>>17842882
that's old technology
forced injection is what's up
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It would
Shake itself apart
Be worse than its "averaged out" counterpart
Need a new crank every week
Need a new cam for each set
Its a pain to do so
Sure, maybe you could, but my question is why
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>>17842634
Steam engines do this but the thing is they don't operate at thousands of RPMs.
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>>17842889
So forced injection uses Racing Acetylene Petroleum Extract right?
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>>17843058
>>17843108
>>17842684
how about if a proper balance is achieved?
>>17842671
but there would be half as many so it would create less resistance
definitely would have to beef up the rings and gaskets tho
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>>17843108
Steam engines do it to recover energy from otherwise wasted steam.
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>>17843267
>I'm not an engineer, what could go wrong with this?
>Someone with more knowledge than you points out an obvious flaw
>"But that's wrong obviously"
If you don't understand how the physics works, then don't make "I feel like..." statements about it. Engine resistance doesn't behave entirely linearly.
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>>17843302
They also probs don't have them connected to the same crank.
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>>17843310
so pushing a 50kg rock is the same amount of work as pushing a 100kg rock.....wow thanks mr engineer
t. samefag
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>>17843388
No, more like
>Oil is not necessarily newtonian.
>Driving a piston at a higher angular rate than it would normally be running at takes a lot of work, thermodynamically speaking
>Longer stroke length and smaller diameter on the same crank shaft means you're adding friction for less benefit
>You're basically running two engines at the same time on the same crankshaft
The performance differences you'd expect by different bore/stroke ratios don't behave the same when you add them together. It's not a linear problem.
Thread posts: 14
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Thread images: 1