Is VVT and VVTi the same?
VVTL-i is a system whose principle of functionality has been derived from VVT-i but it is different in a way that it alters the valve timing as well as the valve lift(duration). Dual VVT-i as the name suggests would carry out the same function but on two valves at the same time .
What VVTI stands for?
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. Some variable valve systems also work on the exhaust valves, which open to let the air-fuel mixture out of the engine.
What is VVTi in Toyota car?
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. Some variable valve systems also work on the exhaust valves, which open to let the air-fuel mixture out of the engine.
What VVT-i means?
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. By continuously changing the open/close timing of the intake valve, VVT-i provides optimum valve timing based on driving conditions.
What is VVT-i in Toyota car?
What VVTI means?
When did Toyota come out with VVT-i?
Toyota introduced VVT-i in 1996. With this technology The timing of the intake valves varies by adjusting the relationship between the camshaft drive (belt, scissor-gear or chain) and intake camshaft. Engine oil pressure is applied to an actuator to adjust the camshaft position.
How is the variable valve timing ( VVT-i ) implemented?
Like VVT-i, the variable valve timing is implemented by shifting the phase angle of the whole camshaft forward or reverse by means of a hydraulic actuator attached to the end of the camshaft. The timing is calculated by the engine management system with engine speed, acceleration, going up hill or down hill etc. taking into consideration.
When did the VVT system come out on the GTE?
The VVT system is a 2-stage hydraulically controlled cam phasing system. VVT-i, introduced on the 1JZ-GTE/2JZ-GTE engine in 1996, varies the timing of the intake valves by adjusting the relationship between the camshaft drive (belt or chain) and intake camshaft.
What’s the difference between i-VTEC and VVT-i?
i-VTEC uses not only timing but also the lift aspect of the valves, while VVTi uses only the timing aspect. The technology that uses timing and lift aspect developed by Toyota is called VVTL-i and can be equated with that of i-VTEC of Honda.