I read it, still not sure I understand it.
https://www.infinitiusa.com/now/technology/vc-turbo-engine
https://www.infinitiusa.com/now/technology/vc-turbo-engine
Variable compression engine
- Thread starter Tim M
- Start date
Kerry & Kathy
Member #007
I understand the intended purpose...and the design is definitely ingenious...
I am certain they have done extensive FEA / simulation analysis...but the primary connecting rod (attached to piston) has an unusually small cross-section on its crankshaft end compared to the secondary rod which looks far more conventional.
I would like to know what bearings are used on the rods as the journal diameters are small on the primary rod.
It doesn't look like a pressed together crankshaft..but if it were they could employ roller bearings instead of conventional bearing shells.
I would be curious to see how reliable it proves to be. The primary rod looks surprisingly small....but they must have the data to support such a small cross-section.
Otherwise, I am impressed.
I am certain they have done extensive FEA / simulation analysis...but the primary connecting rod (attached to piston) has an unusually small cross-section on its crankshaft end compared to the secondary rod which looks far more conventional.
I would like to know what bearings are used on the rods as the journal diameters are small on the primary rod.
It doesn't look like a pressed together crankshaft..but if it were they could employ roller bearings instead of conventional bearing shells.
I would be curious to see how reliable it proves to be. The primary rod looks surprisingly small....but they must have the data to support such a small cross-section.
Otherwise, I am impressed.
Last edited:
Kerry & Kathy
Member #007
That is also a very interesting piston dome configuration for a 4 valve penthouse chamber.
It would appear they have made a number of dome shape modifications to help direct the intake charge when the engine is in it's 14:1 efficiency mode.
You can see that best in the video at the 0:22 sec mark.
There is also a round feature in the combustion chamber that appears possibly to be for direct injection.
There is a lot of interesting technology in that engine...
It would appear they have made a number of dome shape modifications to help direct the intake charge when the engine is in it's 14:1 efficiency mode.
You can see that best in the video at the 0:22 sec mark.
There is also a round feature in the combustion chamber that appears possibly to be for direct injection.
There is a lot of interesting technology in that engine...
Couldn't agree more Kerry. The 2D image doesn't show a good cross section of the rod, so I'd be curious to see that. They have some pretty impressive design software that helps calculate dynamic loading as well. I'd also be interested in the metallurgical composition of the rod if it truly is that small. They have some amazingly strong materials now days to work with.