Editing Nissan QG engine

{{More citations needed|date=November 2018}}
{{Infobox automobile engine
|name=Nissan QG engine
|image=QG18DE.jpg
|caption=QG18DE engine at the [[Nissan Engine Museum]]
|manufacturer=[[Nissan Machinery]] ([[Aichi Kikai]])
|configuration=[[Straight-4]]
|valvetrain=[[DOHC]] [[Multi-valve#Four valves|4 valves x cyl.]] with [[Variable valve timing|VVT]]
|fueltype=[[Petrol engine|Gasoline]]<br/>[[Natural gas vehicle|Natural gas]] (in QG18DEN)
|fuelsystem=[[Electronic fuel injection]]<br/>[[Multi-port fuel injection|MPFI]] (in QG18DE)<br/>[[Fuel injection#Direct injection systems|Direct injection]] (optional in ''NEO Di'')
|coolingsystem=[[Radiator (engine cooling)|Water-cooled]]
|redline=6500
|compression=9.5:1
|block=Cast-iron
|head=Aluminum
|displacement={{convert|1295-1769|cc|L|1|abbr=on|disp=flip}}
|bore={{Convert|71|mm|abbr=on}}<br/>{{convert|73.6|mm|in|abbr=on}}<br/>{{convert|76|mm|in|2|abbr=on}}<br/>{{convert|80|mm|in|2|abbr=on}}
|stroke= {{Convert|81.8|mm|2|abbr=on}}<br/>{{convert|88|mm|in|2|abbr=on}}
|power={{convert|87-130|hp|0|abbr=on}}
|torque={{Convert|130-174|Nm|lbft|0|abbr=on}}
| predecessor = [[Nissan GA engine]]
}}
The '''QG''' engine is a {{convert|1295|cc|L|1|abbr=on|disp=flip}}, {{convert|1497|cc|L|1|abbr=on|disp=flip}}, {{convert|1597|cc|L|1|abbr=on|disp=flip}} and {{convert|1769|cc|L|1|abbr=on|disp=flip}} [[straight-4]] [[piston engine]] from [[Nissan]]. It is a [[lean-burn]] aluminum [[DOHC]] 4-valve design with [[variable valve timing]] and optional ''NEO Di'' [[Fuel injection#Direct injection systems|direct injection]].

The QG engines were designed by Nissan's [[Aichi Kikai]] division <ref>{{cite web |url=http://www.aichikikai.co.jp/english/index.html |title=Archived copy |access-date=2007-12-01 |url-status=dead |archive-url=https://web.archive.org/web/20020601122512/http://www.aichikikai.co.jp/english/index.html |archive-date=2002-06-01 }} Aichi Machine Industry</ref> in [[Japan]].

Nissan websites state the QG as standing for "Quality and Green".<ref>[http://nissan.com.my/vehicles/sentra/performance.html ] {{webarchive |url=https://web.archive.org/web/20081010201126/http://nissan.com.my/vehicles/sentra/performance.html |date=October 10, 2008 }}</ref>

==QG13DE==
The QG13DE is a {{convert|1295|cc|L|1|abbr=on|disp=flip}} DOHC 16-valve with 4-cylinder. It produces {{convert|87|hp|0|abbr=on}} at 6000&nbsp;rpm and {{Convert|130|Nm|lbft|0|abbr=on}} at 4400&nbsp;rpm.
Bore x Stroke= {{Convert|71x81.8|mm|2|abbr=on}}

It is used in the following vehicles:
* 1999-2006 [[Nissan AD#Y11|Nissan Wingroad/ADVAN]] (Y11)
* 1998-2004 [[Nissan Sunny#B15 (1998–2004)|Nissan Sunny]] (B15)
* 2005-2012 [[Nissan Sylphy#First generation (G10/N16; 2000)|Nissan Sentra]] N16 series for low-end models (Philippines)

==QG15DE==
Water-cooled straight 4 [[cylinder (engine)|cylinder]] engine with {{convert|1497|cc|L|1|abbr=on|disp=flip}} capacity and DOHC control. Bore and stroke are {{convert|73.6x88|mm|in|2|abbr=on}}. Output is {{convert|90|hp|0|abbr=on}} at 5600&nbsp;rpm and {{Convert|128|Nm|lbft|0|abbr=on}} at 2800&nbsp;rpm and later {{convert|105|hp|0|abbr=on}} at 6000&nbsp;rpm and {{Convert|143|Nm|lbft|0|abbr=on}} at 4400&nbsp;rpm.

This engine is used in:
* 1999-2004 [[Nissan Sunny]] (B15)
* 1999-2008 Nissan Wingroad/AD (Y11)
* 2002-2009 [[Samsung SM3]] (G10)

Power outputs for N16 Almera:
* '00-'02: 90ps <!-- contradicts text above -->
* '02-'06: 98ps

==QG16DE==
The QG16DE is a {{convert|1597|cc|L|1|abbr=on|disp=flip}} straight 4-cylinder engine with [[DOHC|double over head camshafts]] with 16 valves. The cylinder head also features [[N-VCT|Nissan Variable Cam Timing]] (N-VCT) and micro-polished camshafts. A new water pump assembly has been designed for the QG16DE; the design is based on the water pump from the [[GA16DE]], the changes made it more efficient and reliable than its predecessor. The engine produces {{Convert|88|kW|hp|0|abbr=on}} at 6000&nbsp;rpm and {{convert|165|Nm|lbft|0|abbr=on}} at 4000&nbsp;rpm. Bore and stroke is {{convert|76x88|mm|in|2|abbr=on}}.

Specifications

* [[Engine displacement|Displacement]] - {{convert|1597|cc|L|1|abbr=on|disp=flip}}
* [[cylinder head|Layout]] - [[DOHC]] Inline-4 (Straight-4) with [[N-VCT|Nissan Variable Cam Timing]]
* [[Valves]] - 16, 4 for each cylinder
* [[Power (physics)|Power]] - {{Convert|118|hp|kW|0|abbr=on}} at 6000&nbsp;rpm
* [[Torque]] - {{convert|122|lbft|Nm|0|abbr=on}} at 4000&nbsp;rpm
* [[Redline]] - 6500&nbsp;rpm
* [[Intake manifold|Fuel Delivery System]] - [[Electronic fuel injection]] (EFI)
* [[Ignition system]] - 4 [[Ignition coil|coils]], 1 for each cylinder
* [[Fuel]] [[Compression Ratio]] - 9.5:1
It is used in the following vehicles:
* [[Nissan Sunny]] [[Neo VVL|NEO]] with 5-speed manual or 4-speed [[automatic transmission]]
* [[Nissan Sunny]] N16 series sold in Sri Lanka
* [[Nissan Primera]] (P11.144) 2000-2002
* [[Nissan Primera]] (P12) edition sold in various countries across Europe
* [[Nissan Sentra]] N16 series in the Philippines and the N16 series [[Nissan Pulsar|Pulsar]] sold in Australia and New Zealand
* [[Renault Samsung SM3|Renault Scala]] sold in Mexico and Colombia 
* [[Nissan Almera]] sold in South Africa

==QG18DD==
The 1.8&nbsp;L direct-injection '''QG18DD''' produces {{convert|130|hp|0|abbr=on}} at 6000&nbsp;rpm and {{Convert|174|Nm|lbft|0|abbr=on}} at 2800&nbsp;rpm.

It is used in the following vehicles:
* 1999-2004 [[Nissan Sunny]]

==QG18DE==
The {{convert|1769|cc|L|1|abbr=on|disp=flip}} '''QG18DE''' was designed for Nissan by [https://web.archive.org/web/20020601122512/http://www.aichikikai.co.jp/english/index.html Aichi Machine Industry], [[Japan]]. It is manufactured both in [[Japan]] and the [[Mexico|Mexican]] city of [[Aguascalientes, Aguascalientes|Aguascalientes]]. Bore and stroke is {{convert|80x88|mm|in|2|abbr=on}}. The engine is tuned to achieve most of its torque at low revs at the expense of raw power at high revs, making the engine very responsive in day-to-day driving. It has a cast-iron engine block, aluminum DOHC cylinder head, uses [[Multi-port fuel injection]], forged-steel [[connecting rod]]s, two single-piece cast camshafts and a cast-aluminum intake manifold. It also features [[N-VCT]] (Nissan's Valve Timing Control technology). This engine received the [[RJC Car of the Year|RJC Technology of The Year Award]] of 2001.<ref>Nissan press release, November 20, 2000: http://www.nissan-global.com/GCC/Japan/NEWS/20001120_10e.html {{Webarchive|url=https://web.archive.org/web/20131029203342/http://www.nissan-global.com/GCC/Japan/NEWS/20001120_10e.html |date=2013-10-29 }}</ref>

Specifications
* [[Engine displacement|Displacement]] - {{convert|1769|cc|L|1|abbr=on|disp=flip}}
* Layout - DOHC Inline-4 (Straight-4) with [[Variable valve timing|VVT]] tech (called NVTC).
* [[Valves]] - 16, 4 for each cylinder
* [[Power (physics)|Power]] - {{Convert|115|hp|kW|0|abbr=on}} to {{Convert|128|hp|kW|0|abbr=on}} at 6000&nbsp;rpm
* [[Torque]] - {{convert|122|lbft|Nm|0|abbr=on}} to {{convert|130|lbft|Nm|0|abbr=on}} at 2800&nbsp;rpm
* [[Redline]] - 6500&nbsp;rpm
* Fuel Delivery System - [[electronic fuel injection]]
* Fuel compression ratio - 9.5:1
Emissions Control Devices
* OBDII - On-board Diagnostic System (codes can be read/erased by a variety of readers, e.g. {{Proper name|Actron blaZt}}). Nissan Pulsar N16 Models without EuroOBD in Australia do not have OBDII.
* EGR - Exhaust Gas Recirculation
* HO2S - (4) Oxygen Sensors (2 before exhaust catalyst, 2 after) - note a series 2 1.8l has only 2 O2 sensors: 1 pre-catalytic-converter and 1 downstream from it.
* TWC - Three Way Catalyst (2 in exhaust manifold, 1 under car).
* EVAP - Charcoal Evaporative Purge Canister.
* Ignition Timing: 9 degrees BTDC (can be altered +/- 2 degrees using CONSULT-II handheld diagnostic tester, e.g. {{Proper name|blaZt}}).
* Knock Sensor - located on engine block; retards timing if pinging/detonation is detected.
* Heated Throttle Body - heated by engine coolant.

The QG18DE is used in the following vehicles:
* 2000-2006 [[Nissan Sentra]] B15 and N16
* 2000-2005 [[Nissan Pulsar]] N16
* 1999-2002 [[Nissan Primera]] P11.144
* 2002-2007 [[Nissan Primera]] P12
* 2000-2006 [[Nissan Almera]] N16
* 2000-2006 [[Nissan Almera Tino]]
* 1999-2006 [[Nissan Primera]]
* 2000-2006 [[Nissan Expert]]
* 1998-2006 [[Nissan Avenir]]
* 1999-2005 [[Nissan Wingroad|Nissan Wingroad/AD van]] Y11
* 1999-2005 [[Nissan Bluebird Sylphy]] G10 
* 1998-2004 [[Nissan Sunny]] B15

==QG18DEN==
The QG18DEN is the natural gas version of the QG18DE. It produces {{convert|105|hp|0|abbr=on}} at 5600&nbsp;rpm and {{Convert|149|Nm|lbft|0|abbr=on}} at 2800&nbsp;rpm. Bore and Stroke are {{convert|80x88|mm|in|2|abbr=on}}. It was used in the [[Nissan Wingroad|Nissan AD]] van from 2000 to 2008.

==See also==
* [[List of Nissan engines]]

==References==
{{Reflist}}<!--added above categories/infobox footers by script-assisted edit-->
{{nissan}}

[[Category:Nissan engines|QG]]
[[Category:Straight-four engines]]
[[Category:Gasoline engines by model]]