Toyota NZ engine | |
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Overview | |
Manufacturer | Toyota |
Designer | Yasushi Nouno, Hiroshi Tada, Toshifumi Takaoka[6] |
Production | |
Layout | |
Configuration | Straight-4 |
Displacement |
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Cylinder bore |
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Piston stroke |
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Cylinder block material | Aluminium |
Cylinder head material | Aluminium |
Valvetrain | DOHC 4 valves per cylinder with VVT-i |
Valvetrain drive system | Timing chain |
Compression ratio |
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RPM range | |
Max. engine speed | 6400 rpm |
Combustion | |
Turbocharger | IHI RHF4 with intercooler |
Fuel system | Sequential fuel injection |
Fuel type | |
Oil system | Wet sump |
Cooling system | Water-cooled |
Output | |
Power output | 58–152 PS (43–112 kW; 57–150 hp) |
Torque output | 102–206 N⋅m (75–152 lb⋅ft; 10–21 kg⋅m) |
Chronology | |
Predecessor |
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Successor | (1.5 L only) |
The Toyota NZ engine family is a straight-4 piston engine series. The NZ series uses aluminium open deck engine blocks and DOHC cylinder heads. It also uses sequential fuel injection, and has 4 valves per cylinder with VVT-i.
The engines are produced by Toyota's Kamigo Plant in Toyota, Aichi, Japan (for Prius, Vitz, ist and Sienta);[2] by Siam Toyota Manufacturing in Chonburi, Thailand (1NZ-FE for Yaris and Vios);[7][8] and by Indus Motor Company in Karachi, Pakistan (2NZ-FE for Corolla).[7]
From the second half of 2003, the valve train mechanism of the Japanese market 1NZ-FE engine was changed from a direct acting type to a indirect type with roller rocker arms and hydraulic lash adjuster.[9] The LPG-hybrid 1NZ-FXP and 1NZ-FE Turbo (2009 onwards) engines are also using this valve train mechanism.[10]