Skip to main content

Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles (2015) / Chapter Skim
Currently Skimming:

Appendix H: Variable Valve Timing Systems
Pages 384-385

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 384...
... system generally re- BorgWarner. Rather than using oil pressure applied to the quires a larger oil pump to provide the additional oil flow cam phaser, the CTA system relies on the reaction of the required, which is a parasitic loss that slightly diminishes the valve spring forces during valve opening or closing.
Read the entire page →
From page 385...
... 2010. Twin Independent Variable Camshaft Timing (Ti-VCT)
Read the entire page →

Key Terms

  • variable valve
  • oil pressure
  • valve timing
  • camshaft relative
  • outer housing

  • inner rotor
  • phase shifting
  • gear teeth
  • helical gear
  • independent variable

  • pressure actuated
  • sprocket driven
  • oil flow
  • timing chain
  • moveable cap

  • twin independent
  • sprocket contains
  • actuated variable
  • parasitic loss
  • rotor rotates

  • phaser design
  • similar lobes
  • honda recently
  • valve spring
  • camshaft timing

  • slightly diminishes
  • chain driven
  • additional oil
  • driven outer
  • phase angle


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.