In this edition of the Automobile Technology article, we will discuss, in-depth, the function of Variable Valve Timing and Lift. We shall try to see what types of methods are used to achieve this and what effects it has on various parameters of an Internal Combustion Engine. So, without wasting any more time, let us dive straight into the purpose of VVT and VVL.
Also read: Components of exhaust system – What is exhaust scavenging?
Variable Valve Timing and Lift – Purpose
As we have also discussed in our previous automobile technology-related articles, the internal combustion engine works on the four-stroke principle. In this post, we are just concerned about the intake and exhaust stroke. The compression and expansion (power) strokes don’t play any role in VVT or VVL but these will play part in the effects required to achieve from VVT. As the name suggests, the variation in the timing of the intake/exhaust valves is what we want to achieve. Why is this so important?