BMW N43#N43B16
{{Infobox automobile engine
|name =BMW N43 engine
|production =2007-2011
|configuration =Inline-4
|head =Aluminium
|block =Aluminium
|fueltype =Petrol
|displacement ={{convert|1599|cc|L|1|order=flip|abbr=on}}
{{convert|1995|cc|L|1|order=flip|abbr=on}}
| bore = {{convert|82|mm|in|2|abbr=on}}
{{convert|84|mm|in|2|abbr=on}}
| stroke = {{convert|75.7|mm|in|2|abbr=on}}
{{convert|90|mm|in|2|abbr=on}}
|successor =BMW N13
}}
The BMW N43 is a naturally aspirated four-cylinder petrol engine which was sold from 2006 to 2013. It replaced both the BMW N46 and BMW N45 engines.{{cite web|website=www.paultan.org |url=http://paultan.org/2009/01/08/bmw-116i-now-powered-by-20l-n46-valvetronic/ |title=BMW 116i now powered by 2.0L N46 Valvetronic |date= |accessdate=3 June 2012}} However the N43 was not sold in countries with high sulfur fuel,{{cite web|title=BMW N43, N45 and N46 Four Cylinder Valvetronic Engines|url=http://www.unixnerd.demon.co.uk/n46.html|website=www.unixnerd.demon.co.uk|accessdate=1 April 2017|archive-date=17 February 2020|archive-url=https://web.archive.org/web/20200217000530/http://www.unixnerd.demon.co.uk/n46.html|url-status=dead}} therefore the N45/N46 engines remained in production alongside the N43.
Compared with its N46 predecessor, the N43 features direct injection.
In 2011, as part of BMW's shift to turbocharging, the N43 was replaced by the BMW N13 turbocharged four-cylinder engine. The N43 suffered various problems in service - breakage of the cam chain plastic guides leading to oil starvation as the debris blocked the oil strainer, and problems with the injectors, coil packs and the NOx sensor.
Versions
| class="wikitable sortable" style="text-align: center;" | ||||
| Version | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N43B16 | {{convert|1599|cc|cuin|1|abbr=on}} | rowspan=2|{{convert|90|kW|bhp|0|abbr=on}} at 6,000 rpm | {{convert|160|Nm|lbft|0|abbr=on}} at 4,250 rpm | 2008-2011 |
| rowspan=3| N43B20 | rowspan=3|{{convert|1995|cc|cuin|1|abbr=on}} | {{convert|185|Nm|lbft|0|abbr=on}} at 3,000 rpm | rowspan=3|2007-2011 | |
| {{convert|105|kW|bhp|0|abbr=on}} at 6,000 rpm | {{convert|190|Nm|lbft|0|abbr=on}} at 4,500 rpm | |||
| {{convert|125|kW|bhp|0|abbr=on}} at 6,700 rpm | {{convert|210|Nm|lbft|0|abbr=on}} at 4,250 rpm |
= N43B16 =
The N43B16 has a displacement of {{convert|1599|cc|cuin|1|abbr=on}} and produces {{convert|90|kW|bhp|0|abbr=on}} and {{convert|160|Nm|lbft|0|abbr=on}}.{{cite web|url=http://www.bmwheaven.com/database/engine.php?type=N43 |title=Engine specifications for N43 engines |website=www.bmwheaven.com |date= |accessdate=3 June 2012}} It is the successor to the BMW N45 engine and, as per the N45, does not have Valvetronic.{{cite web|title=BMW N43B16 Engine|url=http://mywikimotors.com/n43b16/|website=www.mywikimotors.com|date=11 April 2015 |accessdate=1 April 2017}}
Applications:
= N43B20 =
The N43B20 has a displacement of {{convert|1995|cc|cuin|1|abbr=on}} and produces up to {{convert|125|kW|bhp|0|abbr=on}} and {{convert|210|Nm|lbft|0|abbr=on}}.
In 2009, the {{convert|1995|cc|cuin|1|abbr=on}} N43B20 replaced the {{convert|1599|cc|cuin|1|abbr=on}} N43B16 in the 116i. Power remained at {{convert|90|kW|bhp|0|abbr=on}}, however torque was increased.
Applications:
{{convert|90|kW|bhp|0|abbr=on}} version
- 2007-2011 E81/E87 116i
{{convert|105|kW|bhp|0|abbr=on}} version
- 2007-2011 E90/E91/E92/E93 318i
- 2008-2011 E81/E87/E88 118i
{{convert|125|kW|bhp|0|abbr=on}} version
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2011 E90/E91/E92/E93 320i
- 2007-2009 E60/E61 520i
See also
References
{{reflist}}
{{BMW automotive petrol engines: 2000s to 2010s}}
{{DEFAULTSORT:Bmw N43}}