Variable Compression Ratio Connecting Rod

[Chickensoup]

Link

Me wants Imagine the possibilities! Hopefully china copies this concept and makes an affordable aftermarket. Maybe even some numatic valve train as well.

It would probably be a pain in the booty hole to fit that giant end cap in large stroke dubs but i dont think it really matters at that point. especially in a t4 application.

And then imagine the possibilities in boosted engines! high compression before the boost kicks in, then just keep lowering CR as RPM goes up.
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-'85 c10 5.3 LS, cam, heads, long tubes, x pipe, 3 inch spin tech's
-'01 e46 325ci *tree modded
-'05 B5.5 TDI Wagon 17in sport rims ;EGR + BSM + ASV Delete, Stage-2 Tune, straight pipe
'65 Tourist Delivery Build
'66 RIP

[nsracing]

Im sure it is very good for a locomotive. It has no place in a race engine or street for that matter.

That is a lot of weight to lug around for so little benefit.

You want really high compression - get a diesel.

[FarmerBill]

Infinity was first to market with a VCE in 2019 with the QX50.

[Dan Ruddock]

The VCE benefits are mostly in turbo apps. The rod above looks too fragile for my tastes.

[Chickensoup]

[Chickensoup]

[TDCTDI]

Saab came out with a VCE in 2000-ish that the cylinders were attached to the head, but they floated in the block. The cylinder head was raised & lowered to alter the CR.

This design was killed when GM took over.

https://en.m.wikipedia.org/wiki/Saab_Variable_Compression_engine
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Everybody born before 1975 has a story, good, bad, or indifferent, about a VW.


GOFUNDYOURSELF, quit asking everyone to do it for you!


An air cooled VW will make you a hoarder.


Do something, anything, to your project every day, and you will eventually complete it.

[VWFIXER]

I was kinda wondering who had ever started a 6 volt bug with 30 wt oil in freezing weather this morning, idkw.

The rod ideas have been better accomplished in automotive applications by VVTi

While my parents may have walked through a blizzard to get to school, I had an Omen experience every day, between viscous black Rottweilers and black birds every day.
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[jimmyhoffa]

[KEGZ]

yeah, most people here are still trying to get their a/f ratio and timing correct.

[modok]

My favorite is the opposed piston engine.
Altering the timing between the two crankshafts allows variable compression.

[VWFIXER]

There’s a sweet spot between wankle and turbine just wanting to make ufos. Using ions to spin the apparatus in a vacuum. Oops I just bogarted that one.
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Choose 2

Over a million air cooled miles driven and 15,000+ cars serviced.