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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 1ZR-FE is a DOHC, 16-valve, 1.6 L (1,598 cc) engine equipped with dual VVT-i. This engine is available with either manual gearbox (5 or 6 Speed), a "multi-mode" manual transmission (MM-T 5 Speed) or an automatic gearbox (4 Speed). This new engine is now replacing the 3ZZ-FE engine in most applications. Output for this engine is rated ...
Alfa Romeo's variator is a cylindrical chamber that contains a pressure chamber and piston along with helical splines. Engine oil pressure, moves the internal piston which rotates slightly due to the helical splines and advances the inlet valve timing by 25 degrees. Oil flow to the variator is controlled by a solenoid valve.
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 VTi Engine (Variable Valve Lift and Timing injection) is a variable valve timing (VVT) system for Prince engine created jointly by both PSA (Peugeot, Citroën, DS Automobiles) and Mini from the BMW Group.
The engine series shares many of the technologies in the AZ engine, while incorporating features such as variable valve timing on both intake and exhaust camshafts or dual VVT-i, low friction technologies including an offset crankshaft, roller rockers for the valvetrain, a three-stage variable oil pump, reduced-tension piston rings and ...
It features DOHC, 16 valves and VVT-i. Bore and stroke is 86 mm × 86 mm (3.39 in × 3.39 in). Its power is 100 kW (134 hp; 136 PS) at 5,600 rpm, and 18.6 kg⋅m (182 N⋅m; 135 lbf⋅ft) of torque at 4,000 rpm with redline of 6000 rpm. Just like its sister, the 2TR-FE engine, the 1TR-FE engine also received a Dual VVT-i update. The updated ...
The opposite case happened in Europe, like the 1.5 L 1NZ-FE engine, the 2NZ-FE engine was discontinued earlier in 2005, but succeeded by 2SZ-FE engine for the XP90 Yaris. In 2013, the exlusive Dual VVT-i 4NR-FE (for FAW Toyota ) and 6NR-FE (for GAC Toyota ) 1.3 L engines were introduced as the replacement for Chinese market XP150 Vios / Yaris .