Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles (2015) / Chapter Skim
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Appendix I: Variable Valve Lift Systems
Appendix I: Variable Valve Lift Systems
Pages 386-389
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From page 386... ...
The low lift cam for light load operation reduces fuel consumption by transferring air flow control from the throttle to the intake valves which results in reduced pumping losses. Audi Valvelift System (AVS)
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From page 387... ...
A pin engages through a worm gear set. Rotating the eccentric shaft to exone of the spiral grooves to move the carrier axially from the tend the pivot location of the intermediate rocker arm results low lift cam to the high lift cam position.
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From page 388... ...
mechanical cam has started and then opened early, resulting in partial valve opening so that air flows faster REFERENCES past the intake valve to enhance in-cylinder turbulence (late valve opening)
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From page 389... ...
2012. 2014 Chevy Impala Gets Variable Valve Lift on Murphy, T
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