INFINITI Reinvents The Gasoline Engine — VC-Turbo
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Published 2018-01-31
INFINITI VC-Turbo Engine - Sponsored by INFINITI
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Infiniti's has developed the first variable compression ratio engine which will ever be used in a production vehicle. The compression ratio can vary from a highly boosted 8:1 ratio, to an Atkinson-cycle running 14:1 ratio. What this means is the engine can produce significant horsepower by using the low compression ratio with a turbocharger, or it can achieve excellent fuel economy by using a high compression ratio and an efficient engine cycle. Now there aren’t simply to modes the engine runs in, it can vary and run at any compression ratio between 8:1 and 14:1, allowing for optimal performance and efficiency for whatever the driving condition may be.
This video will discuss:
1. What is a compression ratio?
2. Why is it beneficial to change the compression ratio?
3. How does the engine alter the compression ratio?
4. What are the advantages of the VC-Turbo engine?
5. What are the balancing characteristics of the VC-Turbo engine?
6. How did INFINITI test this engine for durability and reliability?
The VC-Turbo engine will debut in the 2019 INFINITI QX50. It’s also incorporated within the Q Inspiration, a concept car INFINITI developed to speak to their new interior and exterior design language.
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All Comments (21)
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The elimination of side force in combustion is like the biggest thing noone even talks about. Thanks for bringing it up; that's seriously awesome!
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Engine rebuilding is very hard and tedious work. Infiniti: hold my variable crankshaft.
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There was a diesel engine made in the 1930s called a Lister CS, which had two different compression ratios. There was an extra chamber in the head which could be opened or closed by a valve. High compression was used for starting without use of a glow plug. Once the engine was warm, the compression valve was opened to the low ratio, and then the engine could be loaded.
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Maintenance aside, I'm glad to see that Infiniti and Nissan are still progressing forward with the gasoline engine
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Thanks Infinity, for flying my favorite nerd-gineer over to get the scoop on this. It' a fascinating design. Oh, and thanks to the nerd for yet another awesome video explaining cool engineering. :)
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VC kicked in yo!
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My thoughts and prayers go out to all INFINITI technicians 🙏
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I will wait for the engine with RGB lighting and glass hood to show my homies all the diamonds and platinum I have on the radiator hose
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I love when companies break the mold and push for the unconventional. I will always have more respect for the company that takes risks but occasionally fails over the one that rarely ever has issues but only uses whats already established.
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SAAB had a variable compression engine concept a couple decades back. The entire head would pivot a few mm on it's longitudinal axis via an electronic actuator (motor), like a hinge. It was supercharged and had the same 14/8:1 compression range. It was a small 5 cylinder and had the traditional bottom end.
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Yes, but will the CVT transmission fail before the engine?
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goodness I can't believe this took me 2 years to see. Thank you so much for these explanations! And your hard work.
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Great video and wonderful stab at trying to explain this new complicated motor in about 8½ minutes.
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Love the animation Thanks Infiniti and EE :)
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Great video on VC engine. Fifteen years ago, I designed a VC V8 engine that used a different mechanism. I altered the capacity in the combustion chamber and left the crank alone. From that, I designed a new engine; flat 12, (2) inline 6, 2 cranks, shared head with VC mechanism, forced induction. From that, I was able to go from 4 stroke, to 2 stroke with full time forced induction. It worked on paper, would love to see if it would in real life.
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Here because I saw this on your FB page, and wanted to see the full video. What ever became of this? Anything? Just curious. It does seem overly complex, but I'm glad engineers are constantly trying to figure out new ways of doing things.
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Amazing video, packed with information. You consider our time valuable and you make the most of it. Thank you for that! Amazing engine as well. Kudos to Infiniti and I look forward to seeing the results in the market and plenty of sales.
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WOW! That is outstanding that Infinity hooked you up like that..... and it really shows that your channel is watched by smart people that wish to thoroughly understand the engineering of an engine! lol Sadly though... I drive a 12 STi.... with an engine design nearly 30 years old... Sure it's been updated of course, but at it's core... it's OLD.
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Once again, another phenomenal explanation! My auto school used this video to test us on the Variable Compression engine, needless to say, just scored 100% on the test! Thank you for always explaining complicated things in an easy to understand manner!
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- how many moving parts do you want? - yes
