992.2 hybrids

[RDMcG]

I am curious about it and have no real plans to buy one, but I certainly want to try it and get a better-informed opinion.

[Tom]

I would imagine that's a byproduct of the new requirement in Europe for cars to run at stochiometric (14.7:1) air-fuel ratios under all conditions. Until now, virtually all cars go rich under heavy load, starting with the first carburetors way back when. The extra fuel cools the charge to help prevent pinging, and ensures that every molecule of air gets used -- with the result being smog in the form of excess fuel that doesn't burn fully. Turbo-heads like myself are known to really richen the mixture under heavy boost to keep the motor from detonating. So if the new motor runs at 14.7:1 under boost, and does it on regular (lower octane) gasoline, that's a pretty amazing accomplishment. Will be pretty interesting to learn over time how they pulled that off, and if any of it can be applied to older motors.

[blueline]

I would imagine that's a byproduct of the new requirement in Europe for cars to run at stochiometric (14.7:1) air-fuel ratios under all conditions. Until now, virtually all cars go rich under heavy load, starting with the first carburetors way back when. The extra fuel cools the charge to help prevent pinging, and ensures that every molecule of air gets used -- with the result being smog in the form of excess fuel that doesn't burn fully. Turbo-heads like myself are known to really richen the mixture under heavy boost to keep the motor from detonating. So if the new motor runs at 14.7:1 under boost, and does it on regular (lower octane) gasoline, that's a pretty amazing accomplishment. Will be pretty interesting to learn over time how they pulled that off, and if any of it can be applied to older motors.

Thanks Tom!

[rasetsu]

Porsche has been doing hybrids the same as pretty much every other manufacturer. Check out the 963 Hypercars (and those from BMW, Ferrari, etc.) to see where that technology can go. Also, much of the change is being forced by automotive government mandates worldwide whether any of us like it or not.

Exactly. Not the first nor the last time automotive manufacturers have had to make technological adaptations to meet regulations. Electronic fuel injection, catalytic converters, OBD 1-2 ECU control, etc. were all the results of such regulations. I understand that different people wish to draw their line in the sand somewhere but this type of forced change isn't new.

[blueline]

Porsche has been doing hybrids the same as pretty much every other manufacturer. Check out the 963 Hypercars (and those from BMW, Ferrari, etc.) to see where that technology can go. Also, much of the change is being forced by automotive government mandates worldwide whether any of us like it or not.

Exactly. Not the first nor the last time automotive manufacturers have had to make technological adaptations to meet regulations. Electronic fuel injection, catalytic converters, OBD 1-2 ECU control, etc. were all the results of such regulations. I understand that different people wish to draw their line in the sand somewhere but this type of forced change isn't new.

Absolutely. Nothing remains static for very long.

[blueline]

@Tom

Our octane is still 93 in TN. How will the new Porsche GTS T-hybrids (and others designed for Regular) perform using Premium? Any diff or will the ECU/computers/etc. make adjustments?

[Tom]

@Tom

Our octane is still 93 in TN. How will the new Porsche GTS T-hybrids (and others designed for Regular) perform using Premium? Any diff or will the ECU/computers/etc. make adjustments?

Time will tell, but I happen to live about 1 mile from a gas station that sells street legal 100 octane. It could all be in my head, but I swear the Turbo S has a bit more pep when I mix in some 100 octane to our measly 91 octane E10 gas. At least on our cars with more traditional engine management, extra octane seems to help a little, at least to a point. I assume the ECU pulls timing on our cheap gas, and gives it back when the fuel can handle it. Whether this new-world-age engine management responds to more octane, it's anybody's guess, but my guess is it will have a similar effect.

[blueline]

Well, this is a brilliant breakdown of the new 3.6 T-Hybrid engine that was linked in today's PCA e-Brake News.

From the "Engineering Explained" channel: "Porsche's New 911 Engine Is Absolutely Brilliant - Formula 1 Tech!"

It's certainly worth the 20-minute view if you have the time.






And, for an encore, Mark Webber & Mat Watson put the new 992.2 T-Hybrid GTS to a set of drag race tests (and a quickest stop) vs the the previous Twin-Turbo 992.1 GTS.

[blueline]

Regarding tuners, The Drive had this to say -

"Porsche Says You Can’t Tune the Hybrid 911 GTS. How Long Until Someone Does? The new 911 GTS's electric-assisted turbo is going to be a tough nut to crack—but we've heard this before."


https://www.thedrive.com/news/porsche-s ... meone-does

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