WheelsOfGrace.com | Volume 11 Issue 6 | 13
For New V-Twin Engine With VVT
By Dennis Chung
The VVT Engine
What is a VVT system?
In internal combus on
engines, variable valve
ming (VVT) is the process
of altering the ming of
a valve li event, and is
o en used to improve
performance, fuel
economy or emissions. It is
increasingly being used in
combina on with variable
valve li systems.
Is a VVT engine good?
The increase of power in the upper parts of the rev
range is great, but the low-down torque is what
makes VVT so usable. ... Thanks to more precise handling
of engine valves, VVT makes engines significantly more fuel
economical than their non-VVT counterparts.
What is the advantage of VVT engine?
Engine valves control the intake of fresh air and fuel, and the
exhaust of combustion gases. VVT and lift systems adjust
the timing of the valves to match the operating conditions
of the engine. This improves efficiency over a wide range
of engine operating speeds.
WheelsOfGrace.com Volume 11 Issue 6 13
