According to Wikipedia, a variable valve timing is a "process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions".
Variable valve timing.
It is a 3.6 Liter engine with variable valve timing (VVT).
No, VVT is to be introduced on the 5.3 in 2010
Variable Valve Timing. This means the valve timing self adjusts to set the optimum time they open and shut to maximise engine fuel/power efficiency.
Exhaust camshaft phasing on a VVT (variable valve timing) engine is the adjustment of the exhaust camshaft(valve timing) to what the cylinder needs at that rpm/load to improve power/eff. or emissions.
No, the Nissan X-Trail does not have VVT-i (Variable Valve Timing with intelligence) technology in its engine. VVT-i is a technology developed by Toyota to improve engine performance and fuel efficiency by adjusting the timing of the intake and exhaust valves. Nissan uses a different technology called CVTC (Continuous Variable Valve Timing Control) in some of its engines, but not in the X-Trail model.
Exhaust camshaft phasing on a VVT (variable valve timing) engine is the adjustment of the exhaust camshaft(valve timing) to what the cylinder needs at that rpm/load to improve power/eff. or emissions.
It is an error code that says the variable valve timing is out of limits, may need a timing adjustment or a new vvt solenoid
Variable valve timing (VVT) in the 2.4 L engine of Dodge vehicles enhances engine performance and efficiency by optimizing the timing of the valve openings and closings based on driving conditions. This technology allows for improved fuel economy at low RPMs while providing better power and responsiveness at higher RPMs. By adjusting the valve timing, VVT helps reduce emissions and enhances overall engine smoothness, contributing to a better driving experience.
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The VVT system is a 2-stage hydraulically controlled cam phasing system. The Toyota motors CEO has been reported to have said, "VVT is the heart of every modern Toyota!"[citation needed]VVT-i, introduced in 1996, varies the timing of the intake valves 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. Adjustments in the overlap time between the exhaust valve closing and intake valve opening result in improved engine efficiency.[1] Variants of the system, including VVTL-i, Dual VVT-i, VVT-iE, and Valvematic, have followed.
There is no EGR valve on this generation of Corolla. This engine is equipped with VVT-i (variable valve timing with intelligence), that allows it to perform the function of EGR without the former EGR hardware.
Variable valve timing (VVT) in the Renault Megane optimizes engine performance by adjusting the timing of the opening and closing of the engine's intake and exhaust valves. This technology allows for improved efficiency, reduced emissions, and enhanced power delivery across different engine speeds and loads. By varying the valve timing, the Megane can adapt to driving conditions, providing a balance between performance and fuel economy. Renault's implementation of VVT contributes to its engines' responsiveness and overall driving experience.