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Nissan MR engine

Nissan MR engine
Overview
Manufacturer Nissan Motors
Production 2004-
Combustion chamber
Configuration I4
Displacement 1.6L
1.8L
2.0L
Valvetrain DOHC
Combustion
Fuel system Fuel injection
Fuel type Gasoline (all except M9R)
Diesel (M9R)

The MR is a family of straight-4 all-aluminum 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 for an attempt in 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.

MR16DDT

The MR16DDT is a 1.6 L (1618 cc) DIG-T (Direct Injection Gasoline Turbo-charged) engine, bore is Script error: No such module "convert". and stroke is Script error: No such module "convert".. It was first introduced in the Nissan Juke small SUV in the autumn of 2010. Output is Script error: No such module "convert". and Script error: No such module "convert".. The 2014 Juke RS NISMO produced 215 hp (160 kW) and 210 lb·ft (285 N·m).in 2015 Nissan Teana use 1.6 Turbo as Replacement of the old 2.0 engine.

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
  • Light weight design and reduced frictions

Applications:

MR18DE

The MR18DE is a 1.8 L (1798 cc) version, bore is Script error: No such module "convert". and stroke is Script error: No such module "convert".. It produces Script error: No such module "convert". .

In America the output is Script error: No such module "convert". at 5500 rpm and Script error: No such module "convert". at 4800 rpm.

On July 6, 2006 this engine is also fitted to Nissan Livina Geniss for China version and Nissan GRAND LIVINA for Indonesia and Malaysia version. Output is Script error: No such module "convert". at 5,200 rpm and Script error: No such module "convert". at 4,800 rpm.

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

Applications:

MRA8DE

The MRA8DE is a 1.8 L (1798 cc) 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 is Script error: No such module "convert". and stroke is Script error: No such module "convert".. It produces Script error: No such module "convert". at 6,000rpm and Script error: No such module "convert". at 3,600rpm, and has a compression ratio of 9.9:1.

Applications:

MR20DE

The MR20DE, a 2.0 L (1997 cc) engine was the first MR series engine developed by Nissan as a replacement for the QR20DE. It is an undersquare engine, its bore being Script error: No such module "convert". and stroke Script error: No such module "convert".. 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 Script error: No such module "convert"..

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

A detuned version, with 133 PS (98 kW) instead of Script error: No such module "convert"., was added to the new Bluebird Sylphy in late 2006. In the new Nissan X-Trail, Qashqai and C-Platform Sentra the MR20DE produces Script error: No such module "convert". at 5100 rpm and Script error: No such module "convert". at 4800 rpm. Middle East version of the MR20DE engine that goes in the Nissan Qashqai produces Script error: No such module "convert". at 5200 rpm and Script error: No such module "convert". at 4400 rpm.

Applications:

MR20DD

The MR20DD is a 2.0 L (1997 cc) engine developed by Nissan with direct injection and twin variable valve timing control. The MR20DD engine is "SU-LEV" certified in Japan, and produces Script error: No such module "convert". at 5,600 rpm and Script error: No such module "convert". of torque at 4,400 rpm.[2] [Export markets: Script error: No such module "convert". at 5,200 rpm and Script error: No such module "convert". at 4,400 rpm]

The Australian market Nissan Qashqai ST and Ti models utilise variant of the MR20DD which achieves 106kw at 6000rpm and 200Nm at 4400rpm.[3][4]

Applications:

M9R dCi

File:Nissan M9R Engine 01.JPG
M9R Turbo Diesel Engine
Nissan M9R engine
File:Nissan M9R Engine 02.JPG
Overview
Manufacturer Nissan
Also called 2.0 dCi
Production 2006-present
Combustion chamber
Configuration I4
Displacement Script error: No such module "convert".
Cylinder bore 84.0mm
Piston stroke 90.0mm
Cylinder block alloy cast iron
Valvetrain DOHC/4 valves per cylinder
Compression ratio 15.6:1
Combustion
Turbocharger Yes
Fuel system Common rail Direct Injection
Fuel type Diesel
Output
Power output Script error: No such module "convert".
Torque output Script error: No such module "convert".
Chronology
Predecessor -

The M9R is a family of straight-4 automobile Diesel engines featuring a cast-iron block, co-developed by Renault and Nissan. Renault calls it the M engine. Other features of the engine are a double overhead camshaft, 16-valve layout and a silent timing chain.

The engine is available in the Script error: No such module "convert". tune in Nissan Qashqai, Nissan X-Trail, Renault Mégane, Renault Koleos and Renault Laguna models. In this trim the engine achieves maximum power at 4,000 rpm and maximum torque (Script error: No such module "convert".) at 2,000 rpm. A Script error: No such module "convert". form with particulate filter is available in Renault Laguna and Nissan X-Trail models. A Script error: No such module "convert". variant is also available on the Laguna GT. In both engines maximum power is achieved at 3,750 rpm and maximum torque is available from 1,750rpm.

The design of the bottom end, with an aluminum bearing ladder, allows better absorption of vibration. In order to further 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 Script error: No such module "convert". New Mégane and New Laguna respectively emitted 144 g/km and 154 g/km of CO2 and the 175 hp (127 kW) version of New Laguna 2.0 dCi emits 159 g/km of CO2; they all comply with the Euro 5 standards for exhaust emissions.

The Script error: No such module "convert". and Script error: No such module "convert". M9R engines for the Laguna were updated in 2011 to include some fuel emission optimizations:

  • Stop & Start
  • Thermal Management
  • Electrical Smart Management

They were renamed "2.0 Energy dCi". The CO2 values were thus reduced to 118 g/km for both the 2.0 Energy dCi 130 and 2.0 Energy dCi 150.

It is fitted to the following vehicles:

See also

References