VVT , VVTi And VVTLi In Plain English

Kashish Bidsar — Sun, 07 Feb 2010 13:39:07 +0000

In continuation to our Automobile Technology Articles, this article talks about VVT, VVTi and VVTLi in simple English. We have heard a lot about the term VVT, VVTi and VVTLi, but not many of us really understand what it really mean? In this article, I will not try to go into depths of technology, but I will try to focus on telling you what it is and how its beneficial. What is VVT – Variable Valve Timing ? Variable Valve Timing often abbreviated as VVT is a term used in Diesel, Gasoline and CNG Engines to define the timing for which valves are opened. The lift, duration or timing of the intake and the exhaust valves is controlled by this VVT system , in numerous combinations while the engine is operating. In two stroke engines, to get the same form of result a Power Valve system is used. In normal non-VVT or non-VVTi engines, the valve timings are controlled by a set of cam shafts and belts mechanism. This mechanism will open and close the valves at a particular angle of crankshaft position and will close at a particular angle. In short, this system has no flexibility to change the [...]

CarBlogIndia - All About Automobiles » IVTEC

VVT , VVTi And VVTLi In Plain English

Connect With CarBlogIndia