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  • Toyota NR engine (2008-)

Toyota NR engine from 2008

 Toyota NR engine from 2008

 

The Toyota NR engine family is a straight-4 piston engine series. The NR series uses aluminum engine blocks and DOHC cylinder heads. It also uses SFI fuel injection, and has 4 valves per cylinder with VVT-i or Dual VVT-i or VVT-iE.

 

1NR-FE

The 1NR-FE is a compact straight-4 piston engine featuring "Stop & Start" technology and Dual VVT-i. It was introduced into European market in late 2008 with the Yaris XP9F. Improved engine performance combined with low emissions and fuel consumption was the principal aim during its development.

Advanced engineering has been applied throughout the 1NR-FE engine. Toyota engineers streamlined the engine's intake channel, used computer simulation to optimise airflow, smoothened all surfaces for less turbulence and rounded off all angles and sharp edges inside the engine. One of the key elements of the 1NR-FE engine is its piston design. Smaller and lighter than on the previous 1.3 unit, they are designed with a smaller contact area and use carbon ceramide, an advanced material commonly used in Formula One engineering, to reduce friction. The engine also features cooled exhaust gas recirculation (cold area specification models only) to reduce pumping losses and reduce NOx emissions.

Technical specifications of the engine:

  • Displacement: 1,329 cc (81.1 cu in)
  • Bore x Stroke: 72.5 mm × 80.5 mm (2.85 in × 3.17 in)
  • Max. Output: Euro 4 Version: 74 kW (99 bhp) at 6000 rpm, Euro 5 Version: 73 kW (98 bhp) at 6000 rpm
  • Max. Torque: Euro 4 Version: 132 N·m (97.4 lb·ft) at 3800 rpm, Euro 5 Version: 128 N·m (94.4 lb·ft) at 3800 rpm
  • Compression Ratio: 11.5:1
  • Valve Mechanism: 16-valve DOHC, Chain Drive (with Dual VVT-i)
  • Fuel Injection System: EFI
  • Ignition System: Direct Ignition System
  • Emission Regulation: Euro 4 (Complies with Euro 5 after optimizations introduced in July 2010)
  • Engine Service Mass (incl. coolant & oil): 89.5 kg (197 lb)
  • 6200 RPM Red Line

Applications:

  • Toyota Auris
  • Toyota Corolla
  • Toyota Corolla Axio (NRE160) (Japan)
  • Toyota Etios Liva
  • Toyota iQ
  • Toyota Ractis
  • Toyota Urban Cruiser
  • Toyota Verso-S
  • Toyota Yaris

1NR-FKE

The 1NR-FKE is a variant of the 1NR-FE introduced in Quarter 2 of 2014.Toyota claims it will have a maximum thermal efficiency of 38 percent. Major feature, this 1.3-liter gasoline 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 a new shape that generates a strong vertical tumble flow. Combustion is improved, and loss reduced. Toyota says that with idling stop and other functions, it will lead to fuel efficiency gains of approximately 15 percent.

Main differences between 1NR-FE :

  • Max. Output: 73 kW (98 bhp) at 6000 rpm
  • Max. Torque: 121 N·m (89.2 lb·ft) at 4400 rpm
  • Max. thermal efficency : 38%
  • Expansion ratio: 13.5:1
  • Valve Mechanism: VVT-iE

Applications:

  • Toyota Vitz after April 2014 

2NR-FE

A 1.5 (1495 cc) variant of the NR series engine. First introduced in Q4 of 2010 for the Toyota Etios. It is the first new engine Toyota developed for over 8 years without VVT-i. Done to reduce cost for the low-cost Toyota Etios. A new innovation that made its introduction on this engine is the integration of the exhaust manifold into the cylinder head to reduce emissions.

Technical specifications of the engine:

  • Displacement: 1496 cc
  • Max. Output: 66 kW (90 PS) at 5600 rpm
  • Max. Torque: 132 N·m (97 lbf·ft) at 3000 rpm

Applications:

  • Toyota Etios (sedan)

3NR-FE

A 1.2 (1197 cc) variant of the NR series engine. First introduced in Q2 of 2011 for the Etios Liva. For development Toyota build 3NR-FE with Dual VVT-i mechanism and increasing compression ratio to 11.5 : 1 for Toyota Yaris (Thailand).

Technical specifications of the engine:

  • Displacement: 1197 cc
  • Max. Output: 59 kW (80 PS) at 5600 rpm / 63 kW (86 PS) at 6000 rpm (with Dual VVT-i)
  • Max. Torque: 104 N·m (77 lbf·ft) at 3100 rpm / 108 N·m (80 lbf·ft) at 4000 rpm (with Dual VVT-i)

Applications:

  • Toyota Etios Liva (hatchback)
  • Toyota Yaris (Thailand)

4NR-FE

A 1.3 (1329 cc) variant of the NR series engine. First introduced for the third generation Toyota Vios.

Technical specifications of the engine:

  • Displacement: 1329 cc
  • Max. Output: 73 kW (99 PS) at 6000 rpm
  • Max. Torque: 123 N·m (91 lbf·ft) at 4200 rpm

Applications:

  • Toyota Vios (NCP150R) (China only)

5NR-FE

A 1.5 (1496 cc) variant of the NR series engine. First introduced for the third generation Toyota Vios.

Technical specifications of the engine:

  • Displacement: 1496 cc
  • Max. Output: 79 kW (107 PS) at 6000 rpm
  • Max. Torque: 140 N·m (103 lbf·ft) at 4200 rpm

Applications:

  • Toyota Vios (NCP150R) (China only)

6NR-FE

A 1.3 (1329 cc) variant of the NR series engine. First introduced for the third generation Toyota Vitz.

Technical specifications of the engine:

  • Displacement: 1329 cc
  • Max. Output: 73 kW (99 PS) at 6000 rpm
  • Max. Torque: 123 N·m (91 lbf·ft) at 4200 rpm

Applications:

  • Toyota Yaris (XP130) (China only)

7NR-FE

A 1.5 (1498 cc) variant of the NR series engine. First introduced for the third generation Toyota Vitz.

Technical specifications of the engine:

  • Displacement: 1498 cc
  • Max. Output: 79 kW (107 PS) at 6000 rpm
  • Max. Torque: 140 N·m (103 lbf·ft) at 4200 rpm

Applications:

  • Toyota Yaris (XP130) (China only)

8NR-FTS

A 1.2 [1196 cc] turbocharged variant of the NR series engine. First introduced in the Toyota Auris in 2015. It uses Otto cycle and Atkinson cycle.

Technical specifications:

  • Displacement: 1196 cc
  • Max. Output: 85 kW (114 hp) at 5200 rpm
  • Max. Torque: 190 N·m (140 lbf·ft) at 1500 rpm
  • Max. thermal efficency : > 36%
  • Compression ratio: 10.0:1
  • Valve Mechanism: VVT-iW

Applications:

  • Toyota Auris (E180)
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