Douvrin engine

The Douvrin engine is an all-aluminium inline-four petrol engine family designed in the early 1970s and built from 1977 to 1996 at Douvrin in northern France by Compagnie Française de Mécanique, the joint venture of PSA and Renault. Peugeot called it the ZDJ and ZEJ series and Renault the J-type. The engineer Jean-Jacques His is credited with the design. The block is aluminium alloy with cast iron liners, topped by an aluminium head with a single belt driven overhead camshaft. Displacement ran from 1995 cc in the 2.0 litre to 2165 cc in the 2.2 litre, the larger engine gaining its capacity from a longer stroke, and Renault also made a 2.1 litre diesel from the same design. Unlike the small X-type engine it has a conventional external gearbox, fitted either longitudinally or transversely depending on the car.