Toyota NR engine

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The Toyota NR engine family is a series of small inline-four piston engines designed and manufactured by Toyota, with capacities between Script error: No such module "convert"..

Common features of this series

The NR series uses an aluminium engine block and cylinder head. The valve mechanism is equipped with 4-valves per cylinder, DOHC, and implemented Toyota's Dual VVT-i and VVT-iW. It also uses multi-point or direct fuel injection. The 1NR, 2NR, 3NR, 4NR, 5NR, 6NR, and 7NR engines have Dual VVT-i standard and the 8NR engine has VVT-iW, enabling it to operate in the Otto cycle as well as a modified-Atkinson cycle to improve thermal efficiency.

1NR-FE

The 1NR-FE is a compact 1.3-litre inline-four piston engine featuring Stop & Start technology and Dual VVT-i. It was introduced into the 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 optimize 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 Script error: No such module "convert". 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 Template:NOx emissions.

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. Output: Euro 4 Version: Script error: No such module "convert". at 6000 rpm, Euro 5 Version: Script error: No such module "convert". at 6000 rpm, Indonesia Euro 4 Version: Script error: No such module "convert". at 6000 rpm, Malaysia version: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Euro 4 Version: Script error: No such module "convert". at 3800 rpm, Euro 5 Version: Script error: No such module "convert". at 3800 rpm, Indonesia Euro 4 Version: Script error: No such module "convert"., Malaysia Version: Script error: No such module "convert". at 4000 rpm
  • Compression Ratio: 11.5:1; Indonesia Euro 4 Version: 10.5:1
  • Valve Mechanism: 16-valve DOHC, Chain Drive (with Dual VVT-i)
  • Fuel Injection System: Multi-point fuel injection
  • Emission Regulation: Euro 4 (Complies with Euro 5 after optimizations introduced in July 2010)
  • Engine Service Mass (incl. coolant & oil): Script error: No such module "convert".
  • Idling speed: 700 rpm
  • Redline: 6200 rpm

Applications:

1NR-VE

File:1NR-VE.jpg
1NR-VE engine on a Perodua Bezza

The new 1NR-VE engine was improvised by Daihatsu for the Toyota Avanza and Daihatsu Xenia, and then later used by Perodua for the Perodua Bezza, which is based on the 1.3-litre 1NR-FE. It has ECE fuel consumption figures of Script error: No such module "convert". for the manual variant and Script error: No such module "convert". for the automatic. The engine produces Script error: No such module "convert". and Script error: No such module "convert". of torque.

The Perodua Bezza Advance variant and all variants of the new third generation Myvi are capable of Script error: No such module "convert"., courtesy of the new Eco Idle stop-start system and regenerative braking better than the previous generation engines.

Applications:

1NR-FBE

Fitted to the Toyota Etios and Yaris hatchback made in Brazil, available only as a flexfuel, 1.3 litre, with VVT-i. Replaced by a flexfuel version of the 1NR-FKE in 2016.

1NR-FKE

The 1NR-FKE is a variant of the 1NR-FE introduced in the second quarter of 2014.[3] 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 lower, 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 per cent.

Main differences between 1NR-FE :

  • Max. output: Template:Cvt at 6000 rpm
  • Max. torque: Script error: No such module "convert". at 4400 rpm
  • Max. thermal efficiency : 38%
  • Expansion ratio: 13.5:1
  • Valve mechanism: VVT-iE

Applications:

2NR-FE

File:Toyota 2NR-FE Sienta (2016-08-07).jpg
2NR-FE engine on a Toyota Sienta

A Script error: No such module "convert". variant of the NR series engine, first introduced in the fourth quarter of 2010 for the Toyota Etios. It is the first new engine Toyota developed for over 8 years without VVT-i made to lower costs for the Toyota Etios. A new innovation was introduced to this engine with the integration of the exhaust manifold into the cylinder head[6] to reduce emissions. A Dual VVT-i equipped version was later introduced and first used in Toyota Avanza and in many 1.5L models in the Asian market from the 2017 model year.[2]

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. output:
  • Max. torque:
    • Script error: No such module "convert". at 3000 rpm (w/o Dual VVT-i)
    • Script error: No such module "convert". at 4200 rpm (with Dual VVT-i)
  • Compression ratio: 11.5:1; Indonesian Euro 4 version: 10.5:1
  • Idling speed: 700 rpm
  • Redline: 6200 rpm

Applications:

2NR-VE

File:2019 Toyota RUSH 1.5 2NR-VE (190428).jpg
2NR-VE engine on a Toyota Rush (positioned longitudinally)

Based on the 1.5-litre 2NR-FE engine, The 2NR-VE was adapted by Daihatsu for its products and it's also used by Toyota for their products based on Daihatsu New Global Architecture (DNGA). An idle stop-start system is introduced for the Perodua Myvi and Toyota Rush (since 2021) to enhance fuel efficiency. The commercial variant used in the Daihatsu Gran Max has different output adjustment but still features Dual VVT-i. [7]

Max. output:

  • Script error: No such module "convert". at 6000 rpm

Max. torque:

  • Script error: No such module "convert". at 4200-4400 rpm

Compression Ratio: 11.5:1; Indonesian Euro 4 version: 10.5:1

Applications:

2NR-VEX

File:2NR-VEX NYC200R 02-17-2024.jpg
2NR-VEX engine on a Toyota Yaris Cross

Based on the 1.5-litre 2NR-VE engine, the 2NR-VEX unit is an Atkinson cycle engine used with a hybrid system paired with an electric motor and a lithium-ion battery.

Maximum output:

Maximum torque:

Applications:

2NR-FBE

A flex fuel engine for the Etios in Brazil. It can run on gasoline or any mixture of gasoline and ethanol, up to full ethanol (E100).

Main differences between 2NR-FE:

  • Max. Power output: Script error: No such module "convert". at 5600 rpm
  • Max. Torque: Script error: No such module "convert". at 3100 rpm

Applications:

  • Toyota Etios (Brazil only)
  • Toyota Yaris (Brazil only)
  • Toyota Vios (2016–present)

2NR-FKE

Implements variable valve timing system VVT-iE and engine operation by Miller / Atkinson cycle.[9]

Main differences between 2NR-FE :

  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4400 rpm
  • Compression ratio: 13.5:1

Applications:

3NR-FE

File:2021 Daihatsu Ayla 1.2 R Deluxe B101RS 3NR-VE engine (20211117).jpg
3NR-VE engine on a Daihatsu Ayla

A Script error: No such module "convert". variant of the NR series engine. First introduced in the second quarter of 2011 for the Etios Liva. Toyota later implemented Dual VVT-i mechanism and increased the compression ratio to 11.5:1 for Toyota Yaris models (Thailand).

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 5600 rpm / Script error: No such module "convert". at 6000 rpm (with Dual VVT-i)
  • Max. Torque: Script error: No such module "convert". at 3100 rpm / Script error: No such module "convert". at 4200 rpm (with Dual VVT-i)
  • Compression ratio 11.5:1; Indonesia

Applications:

3NR-VE

A Daihatsu variant of the 3NR-FE. Some technologies used in the Daihatsu-made 3NR-VE engine are:

  • The application of intake valve type roller rocker arm, which reduces the friction produced when the camshaft is running.
  • The application of Dual VVT-i system, which adjusts timing on both intake and exhaust camshafts.
  • Improved cylinder head design.
  • Longer intake valve, which improves lower-end torque.[12]
  • Compatible with E20 fuel (Dual VVT-iE version)

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 6000 rpm (with Dual VVT-i); Script error: No such module "convert". at 6000 rpm (with Dual VVT-iE)
  • Max. Torque Script error: No such module "convert". at 4200 rpm (with Dual VVT-i); Script error: No such module "convert". at 4400 rpm (with Dual VVT-iE)
  • Compression ratio: 10.3:1 (with Dual VVT-i);[13] 13.5:1 (with Dual VVT-iE)

Applications:

3NR-FKE

Implements variable valve timing system VVT-iE and engine operation by Miller / Atkinson cycle.[14]

Main differences between 3NR-FE:

  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4400 rpm
  • Expansion ratio: 13.5:1
  • CO2 output: 99 g/km
  • Fuel consumption: Script error: No such module "convert".

Applications:

4NR-FE

A Script error: No such module "convert". variant of the NR series engine. First introduced for the third generation Toyota Vios.

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4200 rpm

Applications:

5NR-FE

A Script error: No such module "convert". variant of the NR series engine. First introduced for the third generation Toyota Vios.

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4200 rpm

Applications:

6NR-FE

A Script error: No such module "convert". variant of the NR series engine. First introduced for the third generation Toyota Yaris.

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4200 rpm

Applications:

7NR-FE

A Script error: No such module "convert". variant of the NR series engine. First introduced for the third generation Toyota Yaris.

Technical specifications of the engine:

  • Displacement: Script error: No such module "convert".
  • Max. Output: Script error: No such module "convert". at 6000 rpm
  • Max. Torque: Script error: No such module "convert". at 4200 rpm

Applications:

8NR-FTS

File:Corolla Sport 8NR-FTS.jpg
8NR-FTS

A Script error: No such module "convert". turbocharged variant of the NR series engine. First introduced in the Toyota Auris in 2015.[15] It uses direct injection.

Technical specifications:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. Output: Template:Cvt at 5200-5600 rpm
  • Max. Torque: Script error: No such module "convert". at 1500-4000 rpm
  • Max. thermal efficiency: > 36%
  • Compression ratio: 10.0:1
  • Valve Mechanism: VVT-iW

Applications:

9NR-FTS

A version of 8NR-FTS built for Chinese-market Corolla/Levin.[16]

Technical specifications:

  • Displacement: Script error: No such module "convert".
  • Bore x Stroke: Script error: No such module "convert".
  • Max. Output: Template:Cvt at 5200 rpm
  • Max. Torque: Script error: No such module "convert". at 1500 rpm
  • Max. thermal efficiency: > 36%
  • Compression ratio: 10.0:1
  • Valve Mechanism: VVT-iW

Applications:

References

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