Prince is the codename for a family of modern automobile straight-4 engines developed jointly by BMW and PSA Peugeot Citroën. It is a compact engine family of 1.4–1.6 L in displacement and includes most modern features including gasoline direct injection and variable valve timing. A small variety of cars, the most popular kind of automobile. ... The straight-4 or inline-4 is an internal combustion engine with four cylinders aligned in one row. ... Components of a typical, four stroke cycle, DOHC piston engine. ... BMW AG (an abbreviation for Bayerische Motoren Werke AG, or in English, Bavarian Motor Works), is a German company and manufacturer of automobiles and motorcycles. ... PSA Peugeot Citroën (PSA) is a vehicle company that owns the marques Peugeot and Citroën. ... Gasoline direct injection or GDI is a variant of fuel injection employed in modern four stroke petrol engines. ... Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. ...

For BMW, the engines will replace the BMW/Chrysler Tritec engine family in the MINI. PSA will use the Prince family in place of their TU family. The Chrysler Corporation is a United States-based automobile manufacturer, since 1998 merged with Daimler_Benz into DaimlerChrysler. ... In 1997, Chrysler Corporation and Rover Group (later BMW) formed Tritec, a joint venture to design a new small straight-4 engine for small cars. ... The BMW or New MINI is a car produced by BMW since 2001. ...

The engines components will be produced by PSA at their Douvrin, France facility, with MINI engine construction at Hamm's Hall in Oxford, United Kingdom. The joint venture was announced on July 23, 2002 with the first engines produced in 2005. Douvrin is a commune of northern France. ... Oxford is a city and local government district in Oxfordshire, England, with a population of 134,248 (2001 census). ... July 23 is the 204th day (205th in leap years) of the year in the Gregorian Calendar, with 161 days remaining. ... 2002 (MMII) was a common year starting on Tuesday of the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...

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 timing 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. Variable Valve Timing and Lift: Originally, an engine’s valves (their timings and liftings) could be tuned for performance or efficiency, but not both. ... Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. ... Gasoline direct injection or GDI is a variant of fuel injection employed in modern four stroke petrol engines. ... Turbocharger cutaway A turbocharger is an exhaust gas driven compressor used in internal-combustion engines to increase the power output of the engine by increasing the mass of oxygen entering the engine. ...

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

1.4

The 1.4 L PSA ET3 is the likely first example of the Prince family. It is used in the Peugeot 307. A five door 1. ...

1.6

The 1.6 L engine will be used in the second-generation BMW MINI. It has a 85.5 mm (3.4 in) stroke for a total of 1598 cc of displacement. The BMW or New MINI is a car produced by BMW since 2001. ...

Naturally-aspirated

The naturally-aspirated variant has conventional fuel injection and lost-foam cast heads. Its high 11:1 compression ratio creates an output of 115 hp (85 kW) at 5700 rpm with a redline of 6500 rpm. Torque is 118 ft·lbf (160 N·m) at 4250 rpm. A naturally-aspirated engine (NA - aspiration meaning breathing) refers to an internal combustion engine (normally petrol or diesel powered) that is neither turbocharged nor supercharged. ... Fuel Injection is a method or system for metering fuel into an internal combustion engine. ... The compression ratio is a single number that can be used to predict the performance of any internal-combustion engine. ...

Turbocharged

The turbocharged 1.6 L unit adds gasoline direct injection and has special low-pressure die-cast heads. Maximum torque is 177 ft·lbf (240 N·m) at 1400 rpm, remaining flat to 4000 rpm. Power output is 143 hp (105 kW) at 5500 rpm. Turbocharger Cut-away A turbocharger is a device used in internal-combustion engines to increase the power output of the engine by increasing the mass of oxygen and fuel entering the engine. ... Gasoline direct injection or GDI is a variant of fuel injection employed in modern four stroke petrol engines. ...

References

• Press Kit. PSA Peugeot Citroën.com. URL accessed on January 3, 2005.