Toyota NZ engine

Toyota NZ engine
Toyota NZ engine
Overview
Manufacturer	Toyota
Designer	Yasushi Nouno, Hiroshi Tada, Toshifumi Takaoka
Production	1NZ-FXE: December 1997–present; 1NZ-FE: July 1999–present; 1NZ-FE Turbo: 2003–2013; 1NZ-FNE: April 2003–August 2014; 1NZ-FXP: 2017–present; 2NZ-FE: October 1999–January 2020;
Layout
Configuration	Straight-4
Displacement	1,298 cc (1.3 L); 1,497 cc (1.5 L);
Cylinder bore	75 mm (3.0 in);
Piston stroke	73.5 mm (2.89 in); 84.7 mm (3.3 in);
Cylinder block material	Aluminium
Cylinder head material	Aluminium
Valvetrain	DOHC 4 valves per cylinder with VVT-i
Valvetrain drive system	Timing chain
Compression ratio	9.5:1–13.4:1 (hybrid); 10.5:1 (turbocharged); 10.5:1–11.0:1 (naturally aspirated); 12.0:1 (CNG);
RPM range
Idle speed	550–750 rpm
Max. engine speed	6400 rpm
Combustion
Turbocharger	IHI RHF4 with intercooler
Fuel system	Multi-point fuel injection
Fuel type	Petrol; LPG (1NZ-FXP); CNG (1NZ-FNE);
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	Toyota A engine; Toyota E engine;
Successor	Toyota NR engine (for emerging markets); Toyota 2SZ-FE engine (for 2NZ-FE in Europe); Toyota M15 engines (for 1NZ engines);

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 multi-point fuel injection, and has 4 valves per cylinder with VVT-i.

The engines are produced by Toyota's Kamigo Plant in Toyota, Aichi, Japan;^[2] by Siam Toyota Manufacturing in Chonburi, Thailand (1NZ-FE for Yaris and Vios);^[8]^[9] and by Indus Motor Company in Karachi, Pakistan (2NZ-FE for Corolla).^[8]

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 (HLA).^[10]^[11] The post-2006 1NZ-FE Turbo and LPG-hybrid 1NZ-FXP engines are also using this valve train mechanism.