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Variable Valve Timing & Lift (VVT&L)

August 29th, 2009
Also called variable valve actuation (VVT), variable-cam timing and variable valve timing and lift electronic control (VTEC) Engines with Variable Valve Timing & Lift Valves control the flow of air and fuel, into the cylinders and exhaust out of them. When and how long the valves open (timing) and how much the valves move (lift) both [...]