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Title:The World's First CVVD Engine - Genius!
Duration:15:29
Viewed:2,861,996
Published:04-03-2020
Source:Youtube

Hyundai's brilliant engine technology continuously varies valve duration! Variable Valve Timing vs Lift (VVL vs VVT) - https://youtu.be/I5dy2Vnf95w Subscribe for new videos every Wednesday! - https://goo.gl/VZstk7 The world’s first production CVVD engine! CVVD stands for continuously variable valve duration. This technology is currently used in the 1.6L turbo engine of the 2020 Hyundai Sonata. In order to understand it we need to understand how valves work on an engine. Of course, you have the four engine strokes: intake, compression, power, and exhaust. Intake you have the intake valve open, obviously, and your exhaust stroke has the exhaust valve open. On the most basic of engines, everything about how these valves operate is fixed, because those valves follow the cam profile of a fixed camshaft. On modern car engines, there are variables we can change; three of them, as it relates to valves. First, there’s variable valve lift. This means you can change how far down the valve travels allowing for more or less airflow into the engine. Second, you have variable valve timing, this means you can change when you actually open this valve, you can open it sooner, or open it later, relative to its standard timing. And third, and this is what Hyundai is adding into the mix, is variable valve duration. This is controlling how long you actually leave the valve open. You could have it open and close very quickly, you could have it remain open for a longer duration, or anything between. Up until this point, no mass produced engines have actually been able to vary how long a valve remains open, relative to the engine speed. If you’re wondering about Koenigsegg’s freevalve, and we’ll discuss that in the video as well. So, how does Hyundai do it? Check it out! Related Videos: VVT vs VVL - https://youtu.be/I5dy2Vnf95w Koenigsegg FreeValve - https://youtu.be/FJXgKY2O4po EE Shirts! - http://bit.ly/2BHsiuo Recommended Books & Car Products - http://amzn.to/2BrekJm Engineering Explained is a participant in the Amazon Influencer Program. Don't forget to check out my other pages below! Facebook: http://www.facebook.com/engineeringexplained Official Website: http://www.howdoesacarwork.com Twitter: http://www.twitter.com/jasonfenske13 Instagram: http://www.instagram.com/engineeringexplained Car Throttle: https://www.carthrottle.com/user/engineeringexplained Amazon: https://www.amazon.com/shop/engineeringexplained EE Extra: https://www.youtube.com/channel/UCsrY4q8xGPJQbQ8HPQZn6iA NEW VIDEO EVERY WEDNESDAY!



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