Variable Valve Lift vs Variable Valve Timing - VVL vs VVT

What is VVL? What is VVT? How does VVL/VVT work? VW VR6 Engine Explained - https://youtu.be/Y0LKWt3Ttic Subscribe for new videos every Wednesday! - https://goo.gl/VZstk7 What is variable valve lift? What is variable valve timing? We re going to look at the valvtrain from a 2009 Audi 2.0L I4 Turbo engine to check out the differences. Variable valve lift is used to enhance performance depending on the RPM and load, while variable valve timing is typically used for emissions control (lowering combustion temperatures and thus reducing NOx), but also has performance and efficiency benefits as well. Subscribe to Humble Mechanic: https://www.youtube.com/user/HumbleMechanic 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 EE Extra: https://www.youtube.com/channel/UCsrY4q8xGPJQbQ8HPQZn6iA NEW VIDEO EVERY WEDNESDAY!