Hot Rod

Variable Valve Timing For Circle Track Engines

In order to set a stage for what follows, let's first revisit some of the fundamentals involved in how valve timing relates to power output. And to further clarify how "power" is defined in the ...
ZigWheels

Variable Valve Timing (VVT)

VVT has turned out to be one the most popular systems with carmakers and users alikernAn internal combustion engine uses valves for intake and exhaust In the current automobile scenario where there ...
Hot Rod

Variable Valve Timing - The Next Phase

Once upon a time, picking a cam for a given engine combo was all about compromise: improve top-end power at the expense of low-end torque, run well at wide-open throttle but sacrifice idle stability ...
Car and Driver

Variable Valve Timing Explained: An Appreciation of How Quickly Engines Operate

When it comes to the many variables of combustion inside an engine, engineers measure the timing of key events in degrees of crankshaft rotation, a relative frame of reference that remains constant ...
Jalopnik

The Difference Between Variable Valve Timing (VVT) And Variable Valve Lift (VVL), Plus How They Work

Variable valve timing (VVT) and variable valve lift (VVL) have very similar names, both referring to variable valve performance. Does that mean that they are basically the same thing? The are most ...