What is the meaning of VVT-i?
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.
How does Toyota VVT-i engine work?
Toyota’s VVT is a cam phasing system, which is one of the most common in use. It uses a variator, which is hydraulically-controlled, to change the size of the inlet and exhaust valve openings, which also affects the duration of those openings as well.
What is VVT iE?
VVT-iE (Variable Valve Timing – intelligent by Electric motor) is a version of Dual VVT-i that uses an electrically operated actuator to adjust and maintain intake camshaft timing. The exhaust camshaft timing is still controlled using a hydraulic actuator.
What VVT 1 engine?
VVT-i stands for Variable Valve Timing with intelligence. The technology was developed by Toyota to automatically and continuously varies the timing of the intake valves to improve engine performance.
Is the VVT-i a good engine?
VVT-i advantages include increased torque and output, better fuel economy, and reduction of nitrogen oxide (NOx) and hydrocarbon emissions. The simple structure of the VVT-i makes it extremely reliable and easy to adapt for existing engine designs. Wide applications of the new technology are expected in the future.
What controls the VVT-i system?
VVT-i is comprised of three major components: (1) the electronic control unit (ECU), which calculates optimum intake valve timing based on engine operating conditions; (2) the oil control valve (OCV), which controls hydraulic pressure under the ECU’s instruction; and (3) the WT pulley, which continuously changes the …
Is a VVT-i engine good?
Benefits of VVT 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.
At what RPM does VVT-i kick in?
It’s counterpart, the 2zz-ge, which is the engine used in the GT-S, has the VVTL-i technology. That extra “L” in there gives you the kick at 6000 rpm’s (6200 in later models), known only as lift.
What do you think about the Toyota Yaris?
For me the Yaris ticked all the boxes (on paper at least). Disillusionment has quickly set in though. Performance is the biggest disappointment. The car drives like its wading through treacle. Throttle positions seems to take an age to respond and even when I drop down a gear and increase the revs, acceleration is mediocre at best.
Why did you choose the Toyota VVTi?
It also had Toyota reliability (a 5 year warranty anyway) and its low emissions, fuel economy, 6-speed manual gearbox and safety features were very attractive too. I chose the 1.33 litre engine VVTi because of the 101hp it has over the 69hp of the 1.00 litre VVTi.
Is the Toyota Yaris (11-20) a 5 star car?
The Toyota Yaris (11-20) was tested by Euro NCAP in 2017 and was awarded a 5 star overall rating . This overall rating is calculated from the following individual ratings: