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Benutzer:Pingumod/BMW/Prince engine
{{Infobox Automobile engine
|name=BMW/PSA Prince engine
|manufacturer=[[BMW]]<br>[[PSA Group]]
|production=2004&ndash;
|predecessor=[[Tritec engine]]<br>[[PSA TU engine]]
|successor=
|class=[[Straight-4]]
}}
'''Prince''' is the codename for a family of modern [[automobile]] [[straight-4]] [[piston engine|engines]] developed jointly by [[BMW]] and [[PSA Peugeot Citroën]].  It is a compact engine family of 1.4&ndash;1.6&nbsp;L in displacement and includes most modern features including [[gasoline direct injection]] and [[variable valve timing]].

For BMW, the engines replaces the BMW/[[Chrysler]] [[Tritec engine]] family in the [[MINI (BMW)|MINI]].  PSA has started to use the Prince family in place of their [[PSA TU engine|TU family]] — the [[Peugeot 207]] being the first car to receive it.

The engines components will be produced by PSA at their [[Douvrin]], [[France]], facility, with MINI engine construction at Hams Hall in [[Birmingham]], [[England]].  The joint venture was announced on [[July 23]], [[2002]] with the first engines produced in 2005. The Prince engine project is not related to the [[Prince Motor Company]].

In late 2006, an extension of the cooperation between the two groups was announced <ref> the press release is here : [http://www.edubourse.com/finance/actualites.php?idActus=29298] (it's in French, sorry){{Fr icon}} </ref>, promising new four cylinder engines, without further details. 

==Engineering==

The Prince family shares only its basic block dimensions with the previous [[PSA TU engine]] family.  Much of the advanced engineering was provided by BMW, including their [[Valvetronic]] variable valve lift system on the intake side.  Other advanced features include on-demand oil and water pumps.  [[Gasoline direct injection]] with a twin-scroll [[turbocharger]] will be optional.[http://bimmerportal.com/productReviews.aspx]

All Prince engines will share 84&nbsp;mm (3.3&nbsp;in) cylinder spacing and a 77&nbsp;mm (3&nbsp;in) bore. The engine features a two-piece "bedplate" aluminum crankcase for extra stiffness.

==1.4==

The 1.4&nbsp;L PSA [[PSA TU engine#ET3|ET3]] is the smallest member of the Prince family with a stroke measuring 75&nbsp;mm (2.9&nbsp;in) and total capacity of 1360&nbsp;cc.  Depending on application, power output varies from 90&nbsp;[[Horsepower#PS|PS]] to 95&nbsp;[[Horsepower#PS|PS]] while torque can range between 100–103&nbsp;[[Foot-pound force|ft·lbf]] (136–140&nbsp;[[Newton metre|N·m]]).

Applications:
* 2004–present [[Citroen C4]]
* 2006–present [[Peugeot 207]]
* 2006–present [[Peugeot 307]]
* 2007–present [[MINI (BMW)|MINI One]]
* 2007–present [[Peugeot 308]]

==1.6==

The 1.6&nbsp;L engine is used in the second-generation [[MINI]] and various [[Peugeot 207]] models.  It has a 85.8&nbsp;mm (3.4&nbsp;in) stroke for a total of 1598&nbsp;cc of displacement.

===Naturally-aspirated===

The [[naturally-aspirated]] variant ('''EP6''') has conventional [[fuel injection]] and lost-foam cast heads.  Its high 11:1 [[compression ratio]] creates an output of 120&nbsp;PS (118&nbsp;hp/88&nbsp;kW) at 6000&nbsp;rpm with a redline of 6500&nbsp;rpm.  Torque is 118&nbsp;ft·lbf (160&nbsp;N·m) at 4250&nbsp;rpm.<ref name="bmwpr">{{cite web|url=http://news.hspn.com/articles/604/1/2007-Mini-Preview|title=2007 Mini Preview - Press Release|accessdate=August 15|accessyear=2006}}</ref>

Applications:
* 2006–present [[Peugeot 207]] Sport
* 2007–present [[MINI (BMW)|MINI Cooper]]

===Turbocharged===

The [[turbocharged]] 1.6&nbsp;L unit adds [[gasoline direct injection]] and has special low-pressure die-cast heads.  

At this stage, there are two versions on offer - the THP150 and THP175, also known as the '''EP6DT''' and '''EP6DTS''' respectively within Peugeot.

For the THP150 maximum torque is 177&nbsp;ft·lbf (240&nbsp;N·m) at 1400&nbsp;rpm, remaining flat to 5000&nbsp;rpm.  Power output is 150&nbsp;PS (148&nbsp;hp/110&nbsp;kW) at 5500 rpm.

Applications:
* 2006–present [[Peugeot 207]] CC/GT
* 2007–present [[Peugeot 308]]

For the THP175 maximum torque is 178&nbsp;ft·lbf (247&nbsp;N·m) at 1600&nbsp;rpm, remaining flat to 5000&nbsp;rpm.  Power output is 175&nbsp;PS (173&nbsp;hp/128&nbsp;kW) at&nbsp;5500 rpm.  An overboost function is available which temporarily increases torque to 192&nbsp;ft·lbf (260&nbsp;N·m) between 1700&nbsp;rpm and 4500&nbsp;rpm.

Applications:
* 2006–present [[Peugeot 207]] RC
* 2007–present [[MINI (BMW)|MINI Cooper S]]

==References==

* {{cite web|url=http://www.psa-peugeot-citroen.com/document/presse_dossier/PK_PSA_BMW1103281940.pdf|title=Press Kit|work=PSA Peugeot Citroën.com|accessdate=January 3|accessyear=2006}}

===Sources===
<references/>

[[Category:PSA engines]]
[[Category:BMW engines]]

[[no:Prince-motor]]
[[pt:Prince Engine]]