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VVT

Variable valve timing bestows the engine with a unique ability to change the timing of opening & closing of the valves at a simplistic level.

 

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Variable Valve Timing is a system which does not make compromises on power and sacrifice them on the altar of fuel efficiency. This was first a question but challenges like these inspire engineers to go beyond the land of existing technological restrictions and create new benchmark technologies. Variable Valve Timing or VVT is one of the finest technological innovations in today’s gasoline engines. Though, VTEC from Honda for all practical purposes is assumed to have beaten this technology as VTEC consists of tow exclusive cams one each for inlet and exhaust respectively. Diverse manufacturers over time have used variation this basis theme of varying valve timing and developed their own versions of this technology, like Toyota’s own VVT – I, VVTL – I, etc. The question arises on its working; the working principle being alike to the energy necessities of every human being. Quantum of energy necessary for us changes decreases for us by the kind of work one performs or is performing. High energy is required under difficult working conditions and slighter when we are performing normal duties and engines are no dissimilar. The quantity of load on it is not uniform all through their period of its working. Engines experience higher load while going up whilst moving on a flat surface, similarly, load on the engine differs with the amount of passengers in the car at any given point of time.

The VVT technology is made to judge these variations and change valve opening and closing timing according to the load conditions. The technology adjusts valve time to make certain that most favorable amount of fuel and air is sent in the cylinder in accordance with the load conditions.

 

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