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Cutaway view of Variable Valve Timing with intelligence on a ZR engine in Techniquest Glyndŵr. VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing petrol engine technology manufactured by Toyota Group and used by brands Groupe PSA (Peugeot and Citroen), Toyota, Lexus, Scion, Daihatsu, Subaru, Aston Martin, Pontiac and Lotus Cars.
The Toyota 2ZR-FE is a DOHC, 16-valve, 1.8 L (1,798 cc) [3] engine also equipped with Dual VVT-i. This new engine replaces the 1ZZ-FE engine in most applications. [ 4 ] Output for this engine is rated at 98–103 kW (132–138 hp) at 6000 rpm and 173 N⋅m (127.5 lb⋅ft) of torque at 4400 rpm for the Corolla, Matrix, and Vibe and 95 kW (128 hp ...
The valve mechanism is equipped with 4-Valves per cylinder, DOHC, and implemented Toyota's Dual VVT-i and VVT-iW. It also uses multi-point or direct fuel injection . The 1NR, 2NR, 3NR, 4NR, 5NR, 6NR, and 7NR engines have Dual VVT-i standard and the 8NR engine has VVT-iW , enabling it to operate in the Otto cycle as well as a modified- Atkinson ...
In 1997, Toyota's VVT-i variable valve timing technology was introduced along with a further compression ratio increase to 10.5:1, [2] bumping power and torque to 216 kW (290 hp; 294 PS) at 5,900 rpm and 407 N⋅m (300 lb⋅ft) at 4,100 rpm. For the GS 400, output was rated at 224 kW (300 hp; 305 PS) at 6,000 rpm and 420 N⋅m (310 lbf⋅ft) at ...
2015–present Toyota Land Cruiser Prado I4 2.7 Dual VVTI; 2015–present Isuzu D-Max 4WD; 2015–present Isuzu MU-X 4WD; 2016–2023 Toyota Tacoma 2.7 4WD & 3.5 4WD; 2019–present Toyota HiAce/Toyota Commuter 2.8 D-4D Sixth generation (H300) 2019–present Toyota Land Cruiser V6 4.0 Dual VVTI GCC countries; 2020–present Mahindra Thar [8]
Like the recall, which is only a few years separated from a similar big-scale operational nightmare, Toyota's Chinese slump comes on the heels of a big problem the company hoped it had recovered from.
Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems.
The Toyota GR engine family is a gasoline, open-deck, piston V6 engine series. The GR series has a 60° die-cast aluminium block and aluminium DOHC cylinder heads.This engine series also features 4 valves per cylinder, forged steel connecting rods and crankshaft, one-piece cast camshafts, a timing chain, [1] and a cast aluminium lower intake manifold.