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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.
Toyota's VVT-i variable valve timing technology was added to the engine beginning in September 1997, and hence it phased out production of the original engine in Japan. Consequently, maximum torque and horsepower was raised for engines selling in all markets.
In 2007, Caterpillar developed the C13 and C15 Acert engines which used VVT technology to reduce NOx emissions, to avoid the use of EGR after 2002 EPA requirements. [16] [17] In 2010, Mitsubishi developed and started mass production of its 4N13 1.8 L DOHC I4, the world's first passenger car diesel engine that features a variable valve timing ...
The Toyota 1ZR-FAE is a DOHC, 16-valve, 1.6 L (1,598 cc) engine also equipped with Dual VVT-i and Valvematic. 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.
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 ...
The Toyota NZ engine family is a straight-4 piston engine series. The 1NZ series uses aluminum engine blocks and DOHC cylinder heads. It also uses sequential fuel injection, and has 4 valves per cylinder with VVT-i.
The top fundraising campaign on crowdfunding platform GoFundMe in 2024 reflects what has been a major pain point for millions of Americans: inflation. The company's annual giving report shows that ...
Toyota claims it will have a maximum thermal efficiency of 38 per cent. This 1.3-litre petrol engine is employing the Atkinson cycle like hybrid-dedicated Toyota engines. The maximum torque is lesser, but, this time, the maximum output is not reduced. Valves are driven with Variable Valve Timing-intelligent Electric VVT-iE. The intake port has ...