4 cyl Silverado gets worse mileage than the V8

[Eye of the Tiger]

Okay, but I have the copyright on that idea. I can't afford a patent.

[Soup DeVille]

Okay, but I have the copyright on that idea. I can't afford a patent.

Essentially you'd be making the dead cylinder almost like the second expansion cylinder of a compound steam engine, but you'd need to completelt seperate cams, one for the normal operation, one for this: not to mention whatever plumbing trickery would be needed.

[r0tor]

. As with turbo motors, automakers full well know that turbos under deliver, but they can game the EPA test method and prepare for European-esque displacement taxes. All the while WtP are left with a worse product that is worse for the environment.

Car and Driver did a piece on this that determined without a debt you are wrong and turbo engines most often exceed EPA numbers

[Eye of the Tiger]

Essentially you'd be making the dead cylinder almost like the second expansion cylinder of a compound steam engine, but you'd need to completelt seperate cams, one for the normal operation, one for this: not to mention whatever plumbing trickery would be needed.

Ahh, we could use coolant and exhaust heat to create steam to fill the deactivated cylinders and help clean them. Easy.

[Eye of the Tiger]

You might need a free valve system to make that work.

I invented free valves 20 years ago. I just didn't call it that.

[shp4man]

Yeah, but what if you diverted some exhaust pressure from the active cylinders into the compression strokes of the deactivated cylinders, and let them re-exhaust just enough of that exhaust to balance the net energy loss of the deactivated cylinders.

Wouldn't pass smog. 

[r0tor]

Essentially you'd be making the dead cylinder almost like the second expansion cylinder of a compound steam engine, but you'd need to completelt seperate cams, one for the normal operation, one for this: not to mention whatever plumbing trickery would be needed.

Multiair can in theory do this

[Eye of the Tiger]

Multiair can in theory do this

Multiair can do many things in theory. What is actually does most of the time is not work.

[Laconian]

Just bolt in an improbability drive, boom - Fiat tech becomes reliable.

[Eye of the Tiger]

Just bolt in an improbability drive, boom - Fiat tech becomes reliable.

Except in the unlikely event that it turns back into a Fiat.

[r0tor]

Multiair has already won the engine wars... We just haven't figured that out yet

[12,000 RPM]

When it dawns on you why r0tor is defending Fiat

I hope to avoid turbo cars after the Optima for as long as possible. 22 MPG from a 2.0T in a midsize sedan

[BimmerM3]

Yes. The trapped air acts like a spring. The energy used to compress it is mostly returned on the downstroke. Pumping air in and out uses significant energy both ways.

Ah, makes sense. Thanks.

[FoMoJo]

When it dawns on you why r0tor is defending Fiat

I hope to avoid turbo cars after the Optima for as long as possible. 22 MPG from a 2.0T in a midsize sedan

City, highway, combined?

[12,000 RPM]

City, highway, combined?

Combined under my lead foot

Real world figures (Fuelly) indicate ~23-24 MPG, EPA promised 26 combined which is the most I've seen on all highway road trips

Same year Camry/Accord V6s do about 26 MPG in the real world and make more power. It's w/e, $23 or so a month at current gas prices

[r0tor]

When it dawns on you why r0tor is defending Fiat

I hope to avoid turbo cars after the Optima for as long as possible. 22 MPG from a 2.0T in a midsize sedan

I'm getting 29-30+ in my 2.0T midsized AWD sedan -shrug-

[FoMoJo]

Combined under my lead foot

Real world figures (Fuelly) indicate ~23-24 MPG, EPA promised 26 combined which is the most I've seen on all highway road trips

Same year Camry/Accord V6s do about 26 MPG in the real world and make more power. It's w/e, $23 or so a month at current gas prices

Lighten up your foot a bit.  If that doesn't work, then KIA hasn't done it right.

[GoCougs]

Combined under my lead foot

Real world figures (Fuelly) indicate ~23-24 MPG, EPA promised 26 combined which is the most I've seen on all highway road trips

Same year Camry/Accord V6s do about 26 MPG in the real world and make more power. It's w/e, $23 or so a month at current gas prices

Hyundai /Kia, like Ford and Ecoboost, faced a lot of heat for poor mpg. Lots of people have been similarly shortchanged...

[r0tor]

Hyundai /Kia, like Ford and Ecoboost, faced a lot of heat for poor mpg. Lots of people have been similarly shortchanged...

Fake news

https://www.caranddriver.com/features/a20776954/are-turbocharged-engines-a-fuel-economy-boost-or-a-fuel-economy-bust/

[Laconian]

Fake news

https://www.caranddriver.com/features/a20776954/are-turbocharged-engines-a-fuel-economy-boost-or-a-fuel-economy-bust/

With the exception of my MIL's surprisingly thirsty 900cc Renault, all of the turbo cars I've driven have posted surprisingly thrifty fuel economy numbers relative to their amount of punch. I flogged a Jetta TSI over the course of a week in California and still managed to get 32mpg. Amazing~.

The Renault's lame fuel economy has to do with the fact that you need to hit boost to get it to do anything.

[GoCougs]

Fake news

https://www.caranddriver.com/features/a20776954/are-turbocharged-engines-a-fuel-economy-boost-or-a-fuel-economy-bust/

Substituting mag tests for real world is Fake News .

If it was Fake News, there wouldn't be the complaints, class action suits, and regulatory smack downs.

[r0tor]

Yea... screw actual testing and using analytical data to form an opinion

#MAGA

[2o6]

I usually make the MPG in my Sonic.

[veeman]

I made very close to EPA fuel economy numbers with my 2013 Beetle TDI where I usually got 38-39 mpg.  Mixed driving my 2007 Sonata V6 I got 20, 2009 Enclave I got 15-16, 2013 QX56 I get 14 (this is actually close to EPA), 2017 Crosstrek manual I get 23.  The rest I can't remember.  Only turbo was the Beetle but then again it was a very dirty diesel.

[Eye of the Tiger]

I made very close to EPA fuel economy numbers with my 2013 Beetle TDI where I usually got 38-39 mpg.  Mixed driving my 2007 Sonata V6 I got 20, 2009 Enclave I got 15-16, 2013 QX56 I get 14 (this is actually close to EPA), 2017 Crosstrek manual I get 23.  The rest I can't remember.  Only turbo was the Beetle but then again it was a very dirty diesel.

I can get 22 MPG in my heavy ass Dakota with an ancient AMC tractor engine.
Fiesta Ecoboost might beat VW TDI. 47 MPG highway. 39-ish mixed.

[12,000 RPM]

I basically get city rated MPGs in every car I drive in mixed conditions.

[shp4man]

In Southern California stop and go/fast and slow conditions, the 2014 Focus gets 31 on 87 octane and 27 on E85.

[Eye of the Tiger]

In Southern California stop and go/fast and slow conditions, the 2014 Focus gets 31 on 87 octane and 27 on E85.

That's pretty good for the nightmare of California traffic. How about ye olde pickup?

[shp4man]

That's pretty good for the nightmare of California traffic. How about ye olde pickup?

About 12. On a good day.   

[giant_mtb]

Why would/does anyone ever use E85?  Less power, worse mileage, and more expensive(?).......lose-lose-lose.