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Camshaft Basics Intake Duration Diagram

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Intake Duration<br>Here's the intake cycle from start to finish. The duration (in this example 270 degrees) is indicated by arrow three. The degrees opening before TDC is indicated by arrow one, and the degrees after BDC to the closing point by arrow two. Number four indicates the intake centerline angle, which is exactly halfway between the opening and closing point.
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 Intake Duration
Here's the intake cycle from start to finish. The duration (in this example 270 degrees) is indicated by arrow three. The degrees opening before TDC is indicated by arrow one, and the degrees after BDC to the closing point by arrow two. Number four indicates the intake centerline angle, which is exactly halfway between the opening and closing point.  View Related Article

 

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