Browse Publications Technical Papers 2005-01-0769
2005-04-11

Latchcam: A Camshaft Integrated 2-Mode Variable Valve Actuation System 2005-01-0769

This paper describes the concept, analysis and preliminary rig proving of a 2-mode mechanical variable-valve-actuation system, “Latchcam”, designed initially for prototype bucket-tappet overhead-cam applications. The rig-test data allows the prototype Latchcam performance to be compared to a state-of-art 2-mode system in a current cylinder-head application. Some general design implications and issues are reviewed.

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