What does a VVT controller do?


What does a VVT controller do?

Exhaust camshaft is driven by the timing belt and intake camshaft is driven by gear on the end of exhaust camshaft. Intake camshaft drive gear is integrated with the variable valve timing controller to vary intake camshaft valve timing.

What does VVT 1 stand for?

Variable Valve Timing-intelligent
Tokyo―TOYOTA MOTOR CORPORATION announced today the development of its new “Variable Valve Timing-intelligent” (VVT-i) technology, which increases performance and fuel economy. Engine development today necessitates both better fuel economy and advanced vehicle performance.

How does VVT i system work?

The system works by using a variable-speed head for the camshaft. This increases or decreases the speed of the camshaft in relation to the engine’s drive timing. That, in turn, changes the duration of the valve lifting to control intake and exhaust.

What RPM does VVT kick in?

1) Cam-Changing VVT One set operates during normal speed, say, below 4,500 rpm. Another substitutes at higher speed. Obviously, such layout does not allow continuous change of timing, therefore the engine performs modestly below 4,500 rpm but above that it will suddenly transform into a wild animal.

Is VVT good?

There are many benefits to using VVT and virtually no drawbacks. One benefit is an increase in maximum engine speed (and therefore more peak power) – as much as a 25% increase. Low speed torque is also increased, providing better handling and drivability.

Is the 3.6 L VVT a good engine?

So it is fair to say the 3.6 V6 Pentastar is a good reliable engine. It pulls strong with impressive acceleration. It is regarded as among the most reliable high volume production engines around.

Why do people delete VVT?

As for keeping or deleting VVT, the benefit of keeping VVT is that you gain low end torque. The drawback is that you lose high end hp compared to a LS3 cam. Many people swear up and down that a VVT cam is the way to go, while others swear up and down to delete VVT and do a LS3 conversion.