What is VVT-i engine?

What is VVT-i engine?

Variable Valve Timing-Intelligence
VVT-i stands for Variable Valve Timing-Intelligence, which is Toyota’s name for the variable valve technology it uses in most of its vehicles.

What is the difference between VVT-i and non VVT-i?

In normal non-VVT or non-VVTi engines, the valve timings are controlled by a set of cam shafts and belts mechanism. In a VVT engine, the valve timings vary with the engine speed and engine load. This ensures that the valves open as per the need based of the engine speed and load.

When was VVT-i introduced?

It was first introduced in 1998 on the RS200 Altezza’s 3S-GE engine. Dual VVT-i is also found in Toyota’s new generation V6 engine, the 3.5-litre 2GR-FE first appearing on the 2005 Avalon. This engine can now be found on numerous Toyota and Lexus models.

How a VVT-i engine works?

With variable valve timing, the valves are open for shorter periods during light acceleration or idling, so less air-fuel mixture goes into the engine and helps reduce emissions. Under hard acceleration, the valves are open longer, so more air-fuel mixture feeds into the engine and increases power.

What engines have VVTL-i?

Dual VVT-i It was first introduced in 1998 on the RS200 Altezza’s 3S-GE engine. Dual VVT-i is also found in Toyota’s new generation V6 engine, the 3.5-litre 2GR-FE first appearing on the 2005 Avalon. This engine can now be found on numerous Toyota and Lexus models.

When did Toyota start using VVT-i?

Toyota announced VVT-i in 1995, and it was introduced in the U.S. on the redesigned 1998 Lexus LS 400. The model-year 2000 Celica was the first Toyota model in the U.S. with it.

What is dual VVT-i Toyota?

Their latest application is Dual VVT-i (Variable Valve Timing with intelligent) technology. The technology is a smarter ways that could make engine more efficient and more eco-friendly. The sistem is located on the cylinder head which is used as automatic time controller of the engine’s inlet and exhaust valves.

Who invented VVT?

Corliss Orville BurandtVariable valve timing / InventorCorliss Orville Burandt is an American engineer who invented a system of variable valve timing in automobile engines. Working through a 1965 Chevrolet Corvair, he designed a system of putting a sensor into the cylinder to optimize the fuel-air mixture during combustion. Wikipedia

How long does a VVT last?

lifetime
Just like other sensors and switches on your car, the VVT switch is designed to be a lifetime part. The heat of the engine is what usually causes repair issues with this part of the car.

  • September 28, 2022