Engines 101: How Does a Valvetrain Work? | Toyota

In this installment of Toyota's Engines 101 series, we're taking a closer look at one of the most critical parts of an engine: its valvetrain. Watch more from this series: https://www.youtube.com/watch?v=PFKppLZNVuU&list=PLsOvRYzJPCwU6_N3XMdV8IVBFawVZmABp&index=1

Check out more Toyota car technology videos: https://www.youtube.com/watch?v=8dHyDCb8-vE&list=PLsOvRYzJPCwUuNl0-mOAFV_-cPUI1fgID&index=1

0:00 Engines 101: Understanding Valvetrains
0:30 What does a valvetrain consist of?
2:19 What is VVT-I?
3:28 How does the Atkinson Cycle Engine make the valvetrain more efficient?

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In this episode of Engines 101, take a brief look at the valvetrain design of an internal combustion engine.

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