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Nissan QR engine

January 28, 2023

The QR family of inline-four piston engines by Nissan were introduced in 2000 and range from 2.0 to 2.5 L (1,998 to 2,488 cc) in displacement. These motors are aluminum, dual overhead camshaft (DOHC), four-valve designs with variable valve timing and optional direct injection. The engine shares much of its architecture with the YD diesel engine.

Nissan QR engine
A Nissan QR25DE Engine
Overview
ManufacturerNissan (Nissan Machinery)
Production2000–present
Layout
ConfigurationInline-four
Displacement2.0–2.5 L (1,998–2,488 cc)
Cylinder bore89 mm (3.5 in)
Piston stroke80.3 mm (3.16 in)
100 mm (3.94 in)
Block materialAluminum
Head materialAluminum
ValvetrainDOHC 4 valves x cyl. with VVT
Compression ratio9.1:1-10.5:1
Combustion
SuperchargerOn QR25DER only
Fuel systemPort Fuel Injection or Direct Fuel Injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output103–186 kW (140–253 PS; 138–250 hp)
Torque output200–330 N⋅m (148–243 lb⋅ft)
Chronology
PredecessorNissan SR engine
Nissan KA engine

QR20DE

 
QR20DE

The 2.0 L (1,998 cc) QR20DE produces 140 PS (103 kW; 138 hp) at 6000 rpm and 200 N⋅m (148 lb⋅ft) at 4000 rpm. The bore and stroke is 89 mm × 80.3 mm (3.50 in × 3.16 in) and a compression ratio of 9.9:1.[1] The QR20DE was replaced with the MR20DE engine in most applications in early 2005.

Vehicle applications:

QR20DD

The QR20DD is similar to the QR20DE but features NEO direct injection to improve fuel economy and to reduce emissions. It produces 150 PS (110 kW; 148 hp) at 6000 rpm and 200 N⋅m (148 lb⋅ft) at 4400 rpm.[1]

Vehicle applications:

QR25DE

 
Nissan QR25DE Engine

The QR25DE is a 2.5 L (2,488 cc) variant built with cast steel connecting rods, a steel timing chain, counter-rotating balance shafts, and an aluminum intake manifold. The engine bore and stroke is 89 mm × 100 mm (3.50 in × 3.94 in) and a compression ratio ranging from 9.5:1 to 10.5:1 depending on the vehicle.[2]

Output is rated 175 hp (130 kW; 177 PS) at 6000 rpm with 244 N⋅m (180 lb⋅ft) of torque at 4000 rpm in the Altima 2.5 and Sentra SE-R models. Altimas that are PZEV compliant create 170 hp (127 kW; 172 PS) and 175 lb⋅ft (237 N⋅m) of torque.[2] In the 2005+ Nissan Frontier the QR25DE generates 152 hp (113 kW; 154 PS) and 171 lb⋅ft (232 N⋅m) of torque.[3]

2007+ QR25DE

The revised QR25DE found in the 2007+ Sentra, Altima, Rogue, etc. has a number of improvements over the older QR25DE. These include:

  • A simpler, larger diameter single path resin intake manifold replaced the old dual path design. (Note: California emissions models do have a swirl control valve located in the intake)
  • Revised piston crown shape to support a higher compression ratio of 9.6:1.(10.5:1 in Sentra SE-R Spec V.)
  • The balancer system has been moved back slightly from the crank pulley to a more centric location in the block.
  • Revised cam shaft profile.
  • Reinforced connecting rods only available in the Sentra SE-R Spec V 2007-2012 .
  • Reduced friction likely through Nissan's extensive use of coatings on pistons, journal bearings, etc.
  • Additional engine mount on the top of the motor, pulley side.
  • Higher rev limit and improved power output.
Vehicle applications:

QR25DD

The QR25DD is similar to the QR25DE but increases the compression ratio to 10.5:1 and includes direct injection. This engine is also the first QR to use DLC coating on the valve lifter buckets for reduced friction. It produces 125 kW (170 PS; 168 hp) at 5600 rpm and 245 N⋅m (181 lb⋅ft) at 4000 rpm.[1]

Vehicle applications:

QR25DER

The QR25DER is similar to the QR25DE but has a supercharger for increased power and is coupled with a 15 kW (20 hp) electric motor, Dual Clutch System, and lithium-ion battery for increased fuel efficiency. The engine has a compression ratio of 9.1:1 (10.0:1 in 2014 Infiniti QX70, others may be similar) and produces a combined 250 hp (186 kW; 253 PS) at 5600 rpm and 243 lb⋅ft (329 N⋅m) at 3600 rpm.[3]

Vehicle applications:

See also

References

  1. ^ a b c Yamaguchi, Jack. . SAE International. Archived from the original on 2004-06-25.
  2. ^ nissannews.com
  3. ^ . Archived from the original on 2014-04-26.

General references

  • "2007 Nissan Altima overview"
  • "2006 Nissan Altima specifications"
  • "2006 Nissan Frontier specifications
  • "2006 Nissan Sentra specifications"
  • "NTB03070 Nissan technical service bulletin regarding engine precatalyst failure"
  • "NTB06045 Nissan technical service bulletin regarding low oil levels"
  • "NTB05058 Nissan technical service bulletin regarding power valve screws"
  • "Road Test: 2002 Nissan Sentra SE-R" by Josh Jacquot, "SportCompactCar", December 2001, retrieved June 26, 2006
  • "Technobabble: December 2001 by Dave Coleman, "SportCompactCar", December 2001, retrieved June 26, 2006
  • 2014 Infiniti QX70 QR25DER Compression Ratio. Infiniti QX70 Electronic Service Manual, p. EM-154 (2014)

External links

  • "B15U.com - A Nissan Sentra Forum"
  • "B15sentra.net - Another Nissan Forum for both B15 and B16 Sentras."
  • "AllSentra.com - A Forum for all Sentras"

January 28, 2023
nissan, engine, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, march, 2019, learn, when, remove, this, template, message, fam. This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations March 2019 Learn how and when to remove this template message The QR family of inline four piston engines by Nissan were introduced in 2000 and range from 2 0 to 2 5 L 1 998 to 2 488 cc in displacement These motors are aluminum dual overhead camshaft DOHC four valve designs with variable valve timing and optional direct injection The engine shares much of its architecture with the YD diesel engine Nissan QR engineA Nissan QR25DE EngineOverviewManufacturerNissan Nissan Machinery Production2000 presentLayoutConfigurationInline fourDisplacement2 0 2 5 L 1 998 2 488 cc Cylinder bore89 mm 3 5 in Piston stroke80 3 mm 3 16 in 100 mm 3 94 in Block materialAluminumHead materialAluminumValvetrainDOHC 4 valves x cyl with VVTCompression ratio9 1 1 10 5 1CombustionSuperchargerOn QR25DER onlyFuel systemPort Fuel Injection or Direct Fuel InjectionFuel typeGasolineCooling systemWater cooledOutputPower output103 186 kW 140 253 PS 138 250 hp Torque output200 330 N m 148 243 lb ft ChronologyPredecessorNissan SR engineNissan KA engine Contents 1 QR20DE 2 QR20DD 3 QR25DE 3 1 2007 QR25DE 4 QR25DD 5 QR25DER 6 See also 7 References 7 1 General references 8 External linksQR20DE Edit QR20DE The 2 0 L 1 998 cc QR20DE produces 140 PS 103 kW 138 hp at 6000 rpm and 200 N m 148 lb ft at 4000 rpm The bore and stroke is 89 mm 80 3 mm 3 50 in 3 16 in and a compression ratio of 9 9 1 1 The QR20DE was replaced with the MR20DE engine in most applications in early 2005 Vehicle applications 2001 2007 Nissan X Trail T30 140 PS 103 kW 2001 2007 Nissan Primera P12 2002 present Nissan Serena C24 145 PS 107 kW 2003 2008 Nissan Teana J31 145 PS 107 kW 2001 2005 Nissan Wingroad Y11 2002 2005 Nissan Avenir W11 2001 2004 Nissan Prairie M12 2007 2020 Nissan Atlas F24QR20DD EditThe QR20DD is similar to the QR20DE but features NEO direct injection to improve fuel economy and to reduce emissions 1 It produces 150 PS 110 kW 148 hp at 6000 rpm and 200 N m 148 lb ft at 4400 rpm 1 Vehicle applications 2000 2004 Nissan Bluebird SylphyQR25DE Edit Nissan QR25DE Engine The QR25DE is a 2 5 L 2 488 cc variant built with cast steel connecting rods a steel timing chain counter rotating balance shafts and an aluminum intake manifold The engine bore and stroke is 89 mm 100 mm 3 50 in 3 94 in and a compression ratio ranging from 9 5 1 to 10 5 1 depending on the vehicle 2 Output is rated 175 hp 130 kW 177 PS at 6000 rpm with 244 N m 180 lb ft of torque at 4000 rpm in the Altima 2 5 and Sentra SE R models Altimas that are PZEV compliant create 170 hp 127 kW 172 PS and 175 lb ft 237 N m of torque 2 In the 2005 Nissan Frontier the QR25DE generates 152 hp 113 kW 154 PS and 171 lb ft 232 N m of torque 3 2007 QR25DE Edit The revised QR25DE found in the 2007 Sentra Altima Rogue etc has a number of improvements over the older QR25DE These include A simpler larger diameter single path resin intake manifold replaced the old dual path design Note California emissions models do have a swirl control valve located in the intake Revised piston crown shape to support a higher compression ratio of 9 6 1 10 5 1 in Sentra SE R Spec V The balancer system has been moved back slightly from the crank pulley to a more centric location in the block Revised cam shaft profile Reinforced connecting rods only available in the Sentra SE R Spec V 2007 2012 Reduced friction likely through Nissan s extensive use of coatings on pistons journal bearings etc Additional engine mount on the top of the motor pulley side Higher rev limit and improved power output Vehicle applications 1999 2003 Nissan Bassara 165 hp 123 kW 167 PS 2001 2005 Nissan Serena C24 158 hp 118 kW 160 PS 2001 2007 Nissan X Trail T30 APEC export version 178 hp 133 kW 180 PS 2002 2006 Nissan Sentra SE R 165 hp 123 kW 167 PS amp SE R Spec V 175 hp 130 kW 177 PS 2002 2009 Nissan Presage 165 hp 123 kW 167 PS 2002 2020 Nissan Altima 170 hp 127 kW 172 PS to 182 hp 136 kW 185 PS 2003 2005 Nissan Teana 160 hp 119 kW 162 PS 2003 present Nissan Murano Japan 2005 2021 Nissan Frontier 152 hp 113 kW 154 PS 2007 2012 Nissan Sentra SE R 177 hp 132 kW 179 PS amp SE R Spec V 200 hp 149 kW 203 PS 2007 2011 Nissan Altima Hybrid 158 hp 118 kW 160 PS combined 198 hp 148 kW 201 PS 2007 present Nissan X Trail T31 169 hp 126 kW 171 PS 2007 present Renault Koleos TR25 169 hp 126 kW 171 PS 2008 2020 Nissan Rogue 170 hp 127 kW 172 PS 2009 2012 Suzuki Equator 152 hp 113 kW 154 PS 2013 present Nissan Teana 165 hp 123 kW 167 PS 2013 present Nissan X Trail T32 169 hp 126 kW 171 PS 2010 present Nissan Elgrand E52 2018 present Nissan Terra 180 hp 134 kW 182 PS 165 hp 123 kW 167 PS 2020 present Nissan X Terra QR25DD EditThe QR25DD is similar to the QR25DE but increases the compression ratio to 10 5 1 and includes direct injection This engine is also the first QR to use DLC coating on the valve lifter buckets for reduced friction It produces 125 kW 170 PS 168 hp at 5600 rpm and 245 N m 181 lb ft at 4000 rpm 1 Vehicle applications 2002 2006 Nissan Primera P12 JDM QR25DER EditThe QR25DER is similar to the QR25DE but has a supercharger for increased power and is coupled with a 15 kW 20 hp electric motor Dual Clutch System and lithium ion battery for increased fuel efficiency The engine has a compression ratio of 9 1 1 10 0 1 in 2014 Infiniti QX70 others may be similar and produces a combined 250 hp 186 kW 253 PS at 5600 rpm and 243 lb ft 329 N m at 3600 rpm 3 Vehicle applications 2014 2015 Nissan Pathfinder Hybrid 2016 only Nissan Murano Hybrid 2014 2017 Infiniti QX60 HybridSee also EditList of Nissan enginesReferences EditThis article has an unclear citation style The references used may be made clearer with a different or consistent style of citation and footnoting August 2020 Learn how and when to remove this template message a b c Yamaguchi Jack Two midsize Nissans for Japan and Europe SAE International Archived from the original on 2004 06 25 nissannews com Nissan Online Newsroom Archived from the original on 2014 04 26 General references Edit 2007 Nissan Altima overview 2007 Nissan Altima specifications 2006 Nissan Altima specifications 2006 Nissan Frontier specifications 2006 Nissan Sentra specifications NTB03070 Nissan technical service bulletin regarding engine precatalyst failure NTB06045 Nissan technical service bulletin regarding low oil levels NTB05058 Nissan technical service bulletin regarding power valve screws Road Test 2002 Nissan Sentra SE R by Josh Jacquot SportCompactCar December 2001 retrieved June 26 2006 Technobabble December 2001 by Dave Coleman SportCompactCar December 2001 retrieved June 26 2006 2014 Infiniti QX70 QR25DER Compression Ratio Infiniti QX70 Electronic Service Manual p EM 154 2014 External links Edit B15U com A Nissan Sentra Forum B15sentra net Another Nissan Forum for both B15 and B16 Sentras AllSentra com A Forum for all Sentras Retrieved from https en wikipedia org w index php title Nissan QR engine amp oldid 1131745709, wikipedia, wiki, book, books, library,

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