Prince engine

Prince is the codename of a family of straight-four, 16 valve, all-aluminium petrol engines of 1.4 to 1.6 litres developed jointly by BMW and PSA Peugeot Citroën. The cooperation was announced on 23 July 2002 and the first engines were built in 2006, entering the Mini and, for PSA, the Peugeot 207. BMW led the engineering with variable valve lift, a timing chain and a flow controlled oil pump, and the turbocharged versions add direct injection and a twin-scroll turbocharger. PSA calls its engines EP3 and EP6, BMW the N13 and Mini the N12 to N18. PSA made the components at Douvrin while BMW and Mini engines were assembled at Hams Hall in the United Kingdom. The family replaced part of the TU line and won the International Engine of the Year award in its class eight years running.