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I wish they'd revive or make a new slanted version...

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Upon reading the patent, they say, "While six cylinders are shown, it will be appreciated that the engine 102 could include any suitable number of cylinders."

That said, they could have just as easily drawn a 4-banger for the patent, but they chose a 6...

Nothing whatsoever about slants or inclines....

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https://tinyurl.com/yynpj4v2

Are you aware that you can edit your posts to add information?

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Joshua

Obviously not, thanks man...I'll endeavor to do that in the future.

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So is it normal EGR only is fed by 3 cyl in the drawing?

Is this also maybe selective number of cyls mode engine, not sure how that would not want to back feed the non fed turbo.
Or maybe not and that is the reason they only EGR off 3 cyl?

I wouldn't read too much into how the engine will operate from a patent that is specific to EGR function. Yes, it's possible to deactivate the front or rear 3 cylinders and keep an even firing order, but as you point out, there aren't all the induction parts needed to do so.

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Joshua

This isn't normal EGR, but low pressure EGR. It's meant to overcome challenges presented by Boosted application EGR delivery.

The number of cylinders providing the recirculated gasses to the delivery system isn't terribly important, as the volume of re-circulation gas is controlled rather tightly with regard to A/F ratio of the charge and volume requirements at various points in the system. The system would be prohibitively expensive if run off both exhaust streams in a multiple turbo system, taking just one exhaust stream offers great economy.

Anti-knock might be improved across more of the operating envelope of the engine, rather than just cruise and part throttle power levels. WOT EGR? Something for those with more education than I.

Depending on the reliability of the sensors, and the effectiveness of the controls, this could be an excellent way to keep small engines operating at high boost levels clean. Since the EGR gas has already been through the Cat, and gone through an EGR cooler, it should be substantially cleaner than conventional EGR systems, with fewer contaminants deposited in delivery to the induction side. Anyone that has had to clean out an EGR passage will appreciate that. With the cold wheel in the path of Exhaust Gas Re-circulation, it would be critical to keep fouling to a minimum,

The next question is, "Does it work?"

The document was written to patent a method of LPEGR. That the drawn "Engine" happened to be an inline six appears to have been arbitrary. The re-introduction of an Inline six to the auto market would be surprising, as it doesn't lend itself well to front wheel drive. In a pickup or SUV, maybe. Fiat's answer to the EcoBoost perhaps? Coupled with a Multi-Air technology engine, this technology could offer high power, still meeting fuel economy and emissions targets with ever smaller displacement engines.

My two cents
CJ

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Part of Tyrde-Browne Racing

Don't give up hope both Mercedes and Land Rover are utilizing newly designed straight 6s in some of their new models.

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If you didn't drive it there, it's not a street car.

Yeah, they specifically say it doesn't have to be an inline six, but in my experience in patents, generally one uses the example contemplated. In this particular example, as you've pointed out, they apply their technology on three cylinders only in the figure. It could very well be the case that they don't use this patent at all, but it is likely if they do, that they were contemplating an inline six and this description seems pretty specific. They could have easily done a 4 banger in the drawings to make it simpler, or perhaps they are contemplating a v8 or v6 and used the inline 6 to make the figure simpler - no way to tell. That all being said, don't be shocked if FCA does indeed introduce an inline six. That is basically the message I was trying to convey when I brought up their patent. Patents oftentimes are forecasts of what is to come.

Here is an article from 2018 speculating about an inline six from FCA: https://www.hagerty.com/articles-videos ... a-inline-6 (which cites an earlier Allpar article).


brian

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I read somewhere that the inline six will only be 3-inches longer than the current inline 4. The blurb said that it will have an alloy block with plasma sprayed liners - similar to what Toyota, BMW and other manufacturers are building. I assume it will be under square bore/stroke.

It's not possible to make an inline 6 that's only 3 inches longer than a 4 its based on. I probably imagined reading that!