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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 compression ratio is 9.6:1 for the single VVT-i. Average fuel consumption using the JC08 method is 9 km/L (25 mpg ‑imp; 21 mpg ‑US). The 2TR-FE received updates in 2015 to feature Dual VVT-i. The maximum power with Dual VVT-i is 120 kW (161 hp; 163 PS) at 5,200 rpm, and 25 kg⋅m (245 N⋅m; 181 lbf⋅ft) of torque at 3,800 rpm. [2]
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.
Twin downdraft carburetors or Toyota engines manufactured by Daihatsu without VVT-i (e.g., 1KR-DE) E: Multi-point fuel injection: F: Normal cylinder head DOHC: G: Performance cylinder head DOHC H: High compression High pressure charged (e.g., 2L-THE) I: Single-point fuel injection J: Autochoke (early models) or pollution control for commercial ...
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 1ZR-FAE is a DOHC, 16-valve, 1.6 L (1,598 cc) engine also equipped with Dual VVT-i and Valvematic lift system. Output for this engine is rated at 132 hp (98 kW) at 6400 rpm and 118 lb⋅ft (160 N⋅m) of torque at 4400 rpm for most applications. Compression ratio has been increased to 10.7:1, red line is at 6600 rpm.
VVT technology was added for this engine in 2012. In February 2018, the Dualjet version was introduced first in Thailand with higher 11.5:1 compression ratio. [15] [16] Technical specifications: Displacement: 1,197 cc (1.2 L) Bore and stroke: 73 mm x 71.5 mm; Valvetrain: DOHC, 16-valve, with or without VVT; Compression ratio: 10.5–11.5 ...
The 6AR-FSE is a 4-cylinder, 1998 cc, twincam, petrol engine equipped with D4-S direct fuel injection and VVT-iW. It can work in the Otto cycle and a modified-Atkinson cycle depending on output power. It was first introduced in the Camry in December 2014 for the Chinese market and March 2015 for the Thai market.