Editing Nissan QG engine (section)

{{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>