2021 Kia Stinger refresh: changes and photos

Travis Wills said:
While all of those things can make relative fuel economy better adding .2 liters of displacement ALWAYS decreases fuel economy if the compression ratio stays the same.
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Not if the expansion ratio changes (i.e. higher than compression ratio). Atkinson and Miller cycle engines are able to achieve higher thermal efficiencies and overall efficiencies by raising the expansion ratio and leaving the compression ratio unchanged.
 
Helo58 said:
Not if the expansion ratio changes (i.e. higher than compression ratio). Atkinson and Miller cycle engines are able to achieve higher thermal efficiencies and overall efficiencies by raising the expansion ratio and leaving the compression ratio unchanged.
Click to expand...

What you are describing reduces power. You would have to allow a greater volume of air in the Atkinson or Miller cycle to get the equivalent power. Thereby defeating the point of having a compression ratio that varies from the expansion ratio.

You could also decrease the throttle opening of the engine that had the same compression ratio as it’s expansion ratio. That would reduce power and use less fuel.

Atkinson and Miller cycle engines don’t actually provide fuel efficiency improvements because of the difference in compression ratio vs. expansion ratio. That is a common misconception. They actually provide benefits from eliminating the throttle body and that benefit is limited.
 
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Travis Wills said:
What you are describing reduces power. You would have to allow a greater volume of air in the Atkinson or Miller cycle to get the equivalent power. Thereby defeating the point of having a compression ratio that varies from the expansion ratio.

You could also decrease the throttle opening of the engine that had the same compression ratio as it’s expansion ratio. That would reduce power and use less fuel.

Atkinson and Miller cycle engines don’t actually provide fuel efficiency improvements because of the difference in compression ratio vs. expansion ratio. That is a common misconception. They actually provide benefits from eliminating the throttle body and that benefit is limited.
Click to expand...
I won't disagree with anything that you said here, with the exception of the last paragraph. The increased expansion ratio converts more energy from heat to useful mechanical energy (work). From a calculation standpoint, this is precisely part of the definition of increased thermal efficiency. Making it about pumping losses or throttle bodies is less important because they represent a much smaller portion of the efficiency calculations.

Modern (cutting edge) Atkinson cycle engines are also able to minimize some power/torque losses by using a combination of strategies such as higher overall compression ratios (read even higher expansion ratios), reshaped intake ports, tumble flow/swirl intake design, cooled EGR systems, and finer tuning of variable valve technologies. Advancements have been so great in these areas that there is a renewed interest in using these engines as prime movers rather than as part of a hybrid system.

In any event, it is obvious that you know what you are talking about. Quite possibly more than I know what I am talking about. I'm not trying to throw shade at all. I don't get to speak with engineering types very often, but when I do, it is kind of fun to mince words a bit. No offense intended. I only took issue with your use of all caps ALWAYS. This is one of the words that I am hesitant to use in my work, the other being "never."
 
1597167212557.webp Here is the latest 2021 rear tail lights undisguised picture could find.online...
 
All the mods and upgrades for your Stinger you could ever ask for. CLICK HERE!
From interior to exterior to high performance - everything you need for your Stinger awaits you...
All the mods and upgrades for your Stinger you could ever ask for. CLICK HERE!
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Well those interior shots look really good but man the rear change just doesn't do it for me. Especially the large fake tips when you can clearly see the real exit being so much smaller.

www.caranddriver.com

2022 Kia Stinger Reveals Its Updated Design Inside and Out

The refreshed Stinger should arrive in the U.S. next year, possibly with more powerful 2.5-liter and 3.5-liter engines.
www.caranddriver.com www.caranddriver.com
 
friss said:
Well those interior shots look really good but man the rear change just doesn't do it for me. Especially the large fake tips when you can clearly see the real exit being so much smaller
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Interesting they quote this as a 2022.
 
All the mods and upgrades for your Stinger you could ever ask for. CLICK HERE!
From interior to exterior to high performance - everything you need for your Stinger awaits you...
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I don't like how the side markers no longer flow into the new tail light design. Why bother having the red strips on the side if they abruptly end in clear light?

Also, what is the obsession with connecting the rear lights? I don't like that trend. Most manufacturers are doing it now, even the Honda Civic has a rear light bar. This just makes the Stinger look more like a Civic from the rear.

The huge tail pipes look stupid and the mesh around them is annoying to clean.

The quilted seats and door panel stitching look nice, as does the added ambient lighting strip behind the 10.25" display, which is also nice. No digital dash though in that video.
 
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I really like the interior updates, but I also read that the quilted leather may not come to the North American market. I'm not sure why Kia hates us. This article also talks about the different packages.

www.cnet.com

2021 Kia Stinger shoots for premium aspirations with swankier interior

The design updates extend to the exterior, though the changes aren't drastic.
www.cnet.com www.cnet.com
 
If Kia is waiting a bit longer to bring it out, I think that increases the likelihood that the new 2.5T and 3.5T engines will be used. I would be very interested in the 2.5T with 300 HP, but would like to have access to more of the driver's aid and tech features in the GT2. The Sun and Sound Package leaves most of that out.
 
MORE POWER FOR 2021 V6 STINGER!!!! 3 more hp that is. ;)

autos.yahoo.com

2021 Kia Stinger engine details revealed, and it's getting more power

Powertrain details on the updated Kia Stinger are out, and the theme is more power. Kia didn’t explicitly say it was dropping the smaller four-cylinder here, but it’s no stretch to assume the less powerful engine will disappear once the new cars begin to ship. Kia stays the course with the...
autos.yahoo.com autos.yahoo.com
 
All the mods and upgrades for your Stinger you could ever ask for. CLICK HERE!
From interior to exterior to high performance - everything you need for your Stinger awaits you...
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