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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 vehicle, called the RAV4 PHEV (RAV4 Prime in North America until model year 2025), is powered by a differently-tuned 2.5-litre A25A-FXS engine with the same power output as the standard hybrid version but with uprated torque to 228 N⋅m (168 lb⋅ft) at 2,800 rpm. It has a total power output of 225 kW (302 hp), which is 62 kW (83 hp ...
Toyota Corolla Cross 2ZR-FXE Hybrid engine (2023) The Toyota 2ZR-FXE is a 1.8 L (1,797 cc) Atkinson cycle variant of the 2ZR-FE. [9] It has the same bore and stroke, but the compression ratio is increased to 13.0:1, and the inlet valve closing is late-staged. The net result is that the engine has a greater effective expansion than compression.
The Dynamic Force engine series introduced in 2017 uses a different naming scheme, which is similar to that used by Honda and Suzuki. The two numbers between the first and second letters denote the displacement of the engine in liters. The suffix denoting the features of the engine is still used, as with prior engines. Examples: M20A-FKS
The AR engine family is an Inline-4 piston engine series by Toyota, first introduced in 2008 for the RAV4, and subsequently for the Highlander, Venza, Camry and Scion tC. The AR series uses a die-cast aluminium engine block and aluminium DOHC cylinder head.
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 Alfa Romeo Twin Spark engine, introduced in the 1987 Alfa Romeo 75, also uses variable valve timing. [3] [4] The Alfa system varies the phase (not the duration) of the cam timing and operates on the inlet camshaft. [5] Alfa Romeo's variator is a cylindrical chamber that contains a pressure chamber and piston along with helical splines.
VVT-i variable valve timing was added in 1995, for an output of 147 kW (197 bhp; 200 PS) at 6000 rpm and 251 N⋅m (185 lb⋅ft) at 4000 rpm. The exterior design of the 1JZ-GE would later be reused with the 2JZ-GE in 1991, which shared most of its parts with the 1JZ-GE. The non-turbo, non-VVT-i 1JZ-GE is a non-interference engine.