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

Paper #:
  • 2005-01-0769

Published:
  • 2005-04-11
DOI:
  • 10.4271/2005-01-0769
Citation:
Eaton, J., Gilbert, I., Lacy, D., Lacy, C. et al., "Latchcam: A Camshaft Integrated 2-Mode Variable Valve Actuation System," SAE Technical Paper 2005-01-0769, 2005, https://doi.org/10.4271/2005-01-0769.
Pages:
8
Abstract:
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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