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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 KR engine family is a straight-3 piston engine, designed by Daihatsu, a subsidiary of Toyota. The 1KR series uses aluminium engine blocks and chain driven DOHC cylinder heads. It uses multi-point fuel injection, and has 4 valves per cylinder. Some versions have VVT-i variable valve timing. The engine is exceptionally light: 69 kg ...
Other manufacturers may modify the engine after it has left the Toyota factory but the engine still keeps the original Toyota designation. For example, Lotus added a supercharger to the 2ZZ-GE in some versions of the Lotus Elise and Exige, but the engine is still labelled 2ZZ-GE, not 2ZZ-GZE. Examples: 3S-GTE 3S – Third model in the S engine ...
The previous 4-cylinder 1.0 VVT-i engine was replaced by the 3-cylinder engine also found in the Toyota Aygo. The 1.3-litre engine was revised to offer slightly more power, and the 1.4 D-4D got a 15 PS (11 kW; 15 hp) boost to 90 PS (66 kW; 89 hp), the former engine allowing it to achieve exceptional fuel economy.
It is using lower cost low carbon steel material [12] and labelled with "VE" code (a code for Daihatsu engines with VVT-i), while the Toyota version is using more expensive and lighter aluminium alloy material [13] and labelled with "FE" code (Toyota's code for narrow-angle DOHC engine with fuel injection). This Daihatsu version is only fitted ...
The Aygo Crazy has a Japanese-built 1ZZ-FE 1.8 litre VVT-i engine, mated to a five speed manual gearbox, both from the from the Toyota MR2, fitted with a Toyota Motorsport turbocharger conversion. The manufacturer claims the engine produces 147 kW (197 bhp) at 6,700 rpm and 240 N⋅m (177 lb⋅ft) torque at 3,400 rpm.
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 ...
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.
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