Renault M9R

The Nissan MR engine family consists of straight-four 16-valve all-aluminium automobile engines with variable valve timing co-developed by Renault and Nissan. Renault calls it the M engine. Other noteworthy features of this engine family include acoustically equal runner lengths and a tumble control valve for the intake manifold, a "silent" timing chain, mirror finished crankshaft and camshaft journals, and offset cylinder placement in an attempt for increased efficiency.

The MR engine family features 'under stress' manufacture, meaning while the block is being bored, a torque plate puts the block under stress. The block becomes temporarily distorted until the head is torqued onto it, at which point the block is pulled into the correct shape.

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MR16DDT (Renault M5Mt)

The MR16DDT is a DIG-T ( Direct Injection Gasoline-Turbocharged) inline-four 16-valve engine, with a bore x stroke of . It was first introduced in the Nissan Juke small SUV in the autumn of 2010. Output is and of torque. The 2014 Juke NISMO RS FWD produced and . In 2015, the Nissan Teana received this 1.6 Turbo as a replacement for the earlier 2.0-liter naturally aspirated engine. In 2013, it entered Renault's lineup in the Sport Clio as the M5Mt, where it generates and .

Some of the pertinent features of the MR16DDT are:
* Twin variable valve timing control (CVTCS on intake and exhaust valves)
* Turbo-charged and intercooled
* Compression ratio of 9.5:1
* Lightweight design and reduced frictions

Applications:
*2011–present Nissan Juke
*2013-2015 Nissan Juke NISMO (V1 Engine)
*2014–present Nissan Juke NISMO RS FWD and of torque
*2013–present Nissan Tiida (hatchback)/Nissan Pulsar/Nissan Sylphy
*2012 Nissan Deltawing Race car (not production) ( at 7400 rpm)
*2013–present Renault Sport Clio /
*2015–present Renault Sport Clio TROPHY and
*2013–present Renault Samsung SM5 TCE
*2015–present Nissan X-Trail ()
*2015–present Nissan Teana L33 ()
*2015–present Renault Talisman TCE (, )
*2016–present Renault Samsung SM6 TCE ()
*2016–present Renault Mégane#Mégane GT ()
*2017–present Nissan Sentra SR Turbo & NISMO ()
*2017–2018 Renault Kadjar TCe 160

MR18DE

The MR18DE is a version with bore and stroke of and a power of , developed by Nissan, and first installed in the Nissan Tiida in 2004.

In North America the output is at 5500 rpm and at 4800 rpm.

From July 6, 2006 this engine is also fitted to Nissan Livina Geniss for China version and the Nissan Grand Livina for Indonesia and Malaysia. Output is at 5200 rpm and at 4800 rpm.

For Brazil, this engine is fitted to the Tiida and Livina ranges, with Flex-fuel capability.

Applications:

* 2004–2012 Nissan Tiida/Versa
* 2006–2019 Nissan Grand Livina
* 2006–present Nissan Wingroad
* 2009-2014 Nissan Cube

MRA8DE

The MRA8DE is a engine, different from the MR18DE as it has a twin variable valve timing system on both the intake and exhaust valves and uses a diamond-like carbon coating. Bore and stroke is . It produces at 6000 rpm and at 3600 rpm, and has a compression ratio of 9.9:1.

Applications:
*2013–present Nissan Sylphy B17 (Asian)/Nissan Sentra (North America and Middle east)/Nissan Pulsar (Australasia)

MR18DDT (Renault M5Pt)

The MR18DDT is a engine, different from the MR18DE and MRA8DE as it has a turbocharged, twin variable valve timing system on both the intake and exhaust valves and uses a diamond-like carbon coating. Bore and stroke is . It produces at 6000 rpm and at 3600 rpm, and has a compression ratio of 9.0:1. It is used in the Renault and Alpine vehicles since 2015, where it is named M5Pt.

Applications:
*2015–present Renault Espace V Energy TCe 225 EDC7
*2015–present Renault Talisman EDC FAP
*2017–present Renault Megane IV RS280 (Sport and Cup), Megane R.S. 300 Trophy
*2017–present Alpine A110 (2017)

MR20DE (Renault M4R)

The MR20DE, a engine, was the first MR series engine developed by Nissan as a replacement for the QR20DE. It is an undersquare engine, its bore and stroke being . It was first introduced in the Lafesta and Serena MPVs and Renault Samsung SM5 in early 2005. In November 2006, it entered Renault's lineup in the Clio III as the M4R, where it generates .

This engine is available with Nissan's XTRONIC CVT continuously variable transmission in several applications.

A detuned version, with instead of , was added to the new Bluebird Sylphy in late 2006. In the new Nissan X-Trail, Qashqai and C-Platform Sentra, the MR20DE produces at 5100 rpm and of torque at 4800 rpm. Middle East version of the MR20DE engine that goes in the Nissan Qashqai produces at 5200 rpm and of torque at 4400 rpm.

Applications:
*2005–present Nissan Serena
*2005–present Renault Samsung SM5
*2005–2012 Nissan Bluebird Sylphy
*2006–present Renault Clio
*2007–present Nissan X-Trail
*2007–present Nissan Qashqai
*2007–2012 Nissan Sentra
*2007–2015 Renault Laguna
*2008–2014 Nissan Teana(J32)
*2008–present Renault Safrane
*2008–2016 Renault Mégane(III)
*2009–present Renault Scénic
*2009–present Renault Fluence
*2014–2016 Renault Koleos (First generation)
*2009–present Renault Samsung SM3
*2009–present Renault Latitude
*2013–present Nissan NV200
*2013–present Nissan Sentra (Brazil only - Flex Fuel (gasoline and ethanol)
*2015–present Renault Kadjar (China)

MR20DD (Renault M5R)

The MR20DD is a engine developed by Nissan with direct injection and twin variable valve timing control. The MR20DD engine is "SU-LEV" certified in Japan, and produces at 5600 rpm and of torque at 4400 rpm. Export models claim at 5200 rpm and at 4400 RPM. In 2016, it entered Renault's lineup in the Koleos II as the M5R, where it generates .

The Australian & New Zealand markets Nissan Qashqai ST and Ti models use a variant of the MR20DD which achieves at 6000 rpm and at 4400 rpm.

Applications:

*2010–present Nissan Serena
*2013–present Nissan X-Trail
*2014–present Australian & New Zealand Markets Nissan Qashqai
*2016-present Renault Koleos II
*2017-present Renault Samsung QM6
*2017-present Nissan Rogue Sport

MR20DD Hybrid

The MR20DD Hybrid is a Hybrid engine developed by Nissan with direct injection and twin variable valve timing control. The MR20DD Hybrid engine is "SU-LEV" certified in Japan, and produces at 6000 rpm and of torque at 4400 rpm. with Synchronous Electric Motor produces and of torque and Lithium-Ion battery, for a combined power of .

Applications:

*2013–present Nissan X-Trail Hybrid

MR20DD S-Hybrid

The MR20DD S-Hybrid is a Hybrid engine developed by Nissan with direct injection and twin variable valve timing control. The MR20DD S-Hybrid engine is MHEV "SU-LEV" certified in Japan, and produces at 6000 rpm and of torque at 4400 rpm. with Synchronous Electric Motor and 48V battery.

Applications:

*2012–present Nissan Serena S-Hybrid

M9 diesel

The M9R and M9T are a family of straight-four 16-valve turbocharged diesel engines co-developed by Nissan and/or Renault, and also Mercedes-Benz Group in the case of the M9T/OM699. Following Renault's designation plan, the last letter (M9R resp. M9T) is to indicate the swept volume of 2.0 L resp. 2.3 litres. Despite the similar names, the diesel engines are only loosely related to the MR gasoline engines. As of late 2018, a new version of the M9R using adBlue and with slightly different internal dimensions replaced the original M9R.

Features of the diesel engines include a cast-iron block, aluminium alloy cylinder head with double overhead camshafts, 16-valve layout and a bushes timing chain. The M9T is directed to heavier vehicles like the Nissan Navara or the Renault Master. It features a bore and stroke of for a total displacement of , balancer shafts, typical speeds are 3500 rpm for maximum power and 1250 rpm for maximum torque.

Low output versions of the M9R for the Renault Trafic II at had been replaced by the Renault R engine with the introduction of the Trafic III, while versions starting from include VNT chargers. The top version of the Navara utilizes the M9T with twin-turbochargers and . During production period engines had been updated up to Euro 6 (in early 2017).

M9R

The M9R is a 16-valve turbocharged diesel engine developed by the Renault–Nissan Alliance, and first installed in the Renault Laguna in 2006. It is available in the tune in Nissan Qashqai, Nissan X-Trail, Renault Mégane, Renault Koleos and Renault Laguna models. In this trim the engine achieves maximum power at 4000 rpm and maximum torque of at 2000 rpm. A form with particulate filter is available in Renault Laguna and Nissan X-Trail models. A variant is also available on the Laguna GT. In both engines maximum power is achieved at 3750 rpm and maximum torque is available from 1750 rpm.

In order to reduce vibrations, balance shafts are included in some versions of the engine.
The 2.0 dCi engine in all its versions complies with the Euro 4 and 5 standards for exhaust emissions. The New Mégane and New Laguna respectively emitted /km and /km of CO₂ and the version of New Laguna 2.0 dCi emits /km of CO₂; they all comply with the Euro 5 standards for exhaust emissions.

In 2011 the M9R engines has been updated with an optional package to lower exhaust emissions (Euro5) and fuel consumption. These engines are tagged "2.0 Energy dCi 130" resp. "2.0 Energy dCi 150", typically maximum power is available at 3750 rpm and maximum torque at a minimum of 1750 rpm. The package comprises:
*Stop & Start
*Active thermal management
*Smart electrical management
*Variable capacity oil pump
The CO₂ values were thus reduced to /km for the Laguna both the 2.0 Energy dCi 130 and 2.0 Energy dCi 150.

Towards the end of 2018, the 2-liter M9R engine became the "M9R Gen 5" when it received a thorough redesign to comply with the increasingly stringent anti-pollution regulations: first of all the engine dimensions were changed, from to - using the same bore as the larger M9T but with nearly no change in displacement, which increases by 2 cc to 1997 cc. Another important innovation introduced with this update was the BluedCi technology, which involves the installation of a small tank of adBlue, a chemical additive that is injected upstream of the catalyst and which, when combined with the exhaust gas, causes a reaction chemistry within the catalyst itself. This reaction transforms most of the nitrogen oxides into harmless nitrogen and water vapor. This engine debuted in two power levels, , in the Renault Talisman II 2.0 Blue dCi which was produced from December 2018. In December 2020 a single 190 PS version replaced both of the earlier versions.

The engine is fitted to the following vehicles:
*2007–2011 Nissan Qashqai
*2007–2012 Nissan X-Trail
*2005–2015 Renault Laguna
*2006–2015 Renault Mégane
*2007–present Renault Koleos
*2006–2014 Renault Espace
*2007–2010 Renault Vel Satis
*2015 Nissan Teana
*2006-2014 Vauxhall Vivaro Renault Trafic Nissan Primastar
*2010–present Renault Latitude
*2015–present Renault Espace V

M9T

The M9T is a version specifically designed for light commercial vehicles that is manufactured by Renault in Cléon. It was introduced on the Renault Master and its badge engineered derivatives, initially with power ranging from to , and torque ratings starting at up to . Later, it was also introduced to the Nissan Navara and the Mercedes-Benz X-Class. Nissan calls it the YS23 while in Mercedes-Benz vehicles, it is named the OM699. The engines with lower power ratings feature a single fixed geometry turbocharger, while the more powerful versions have a variable-geometry turbocharger or twin-turbochargers. The engines are compliant with the Euro 6 emission regulations.

Applications:

* Mercedes-Benz
** X-Class
* Nissan
** Navara
** NV400
** Terra
* Opel
** Movano
* Renault
** Alaskan
** Master
* Vauxhall
** Movano

File:Nissan_YS23DDTT_Engine.jpg, Nissan YS23DDTT Engine

See also

*List of Nissan engines
*List of Renault engines

Weblinks

Nissan-Global.com HR/MR Engine Technology Overview

References

{{DEFAULTSORT:Nissan Mr Engine
MR
MR
Straight-four engines
Diesel engines by model
Gasoline engines by model