BMW Group and PSA Peugeot Citroën have unveiled new petrol engines, the first to be jointly developed and produced by their co-operative venture announced in July 2002.

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From 2006, the engines will be used in small and mid-size cars produced by the Peugeot and Citroën marques, as well as future Mini models in place of the current Brazilian-made DaimlerChrysler units.


Production is expected to eventually total roughly one million units a year.


The first two engines are a 1.6-litre atmospheric engine with a variable geometry turbocharger and a power output of 85 kW (115 hp) and a 1.6-litre direct injection, compressed turbo engine with a power output of 105 kW (143 hp).


These are the first of a family that will eventually comprise engines with power outputs from 55 kW (75 hp) to 125 kW (170 hp). Features include variable valve timing, fully controlled oil pump, single belt drive for all ancillary components and cylinder heads produced by lost foam casting.

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Claimed innovations include direct injection to optimise power (though the Volkswagen Group is already a well-established user of this technology), a twin-scroll turbocharger to improve response time and driving comfort and a self-disengaging water pump to reduce fuel consumption and emissions.


“The co-operation between BMW Group and PSA Peugeot Citroën clearly demonstrates that gasoline engines still offer a great potential of technological progress, thus contributing to the reduction of consumption and CO2 emissions while enhancing the car performances and its related driving pleasure,” the two automakers said in a statement.


PSA has a separate diesel engine joint venture with Ford. Engines from that alliance include the acclaimed 2.7-litre V6 turbodiesel used in the Jaguar S-type and Land Rover Discovery 3.

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