This engine was developped in common by Peugeot, Renault and Volvo. It is being manufactured in France at the Franco-Swedish Engine Company plant at Douvrin.Displacement is 2.66 liters; the cylinder block and cylinder head are made of aluminum. The V is 90° open so the assembly is small and lightweight.This paper deals with the fundamental elements considered for the choice of the structure of the engine assembly, particularly the layout of the cylinders. A technical analysis is provided for the choice of: location of the camshaft, drive of the distribution, sizes of bearings, structure of bearing caps and block reinforcing ribs. The requirements to be met to insure the best balancing and the various alternatives available will be explained in detail.The designs incorporated to insure proper engine aspiration are explained, as well as designs adopted for fuel distribution and ignition of the cylinders. Particular attention is given to the selection of a fuel injection and emission control system to meet applicable regulations.The paper will also deal with the lubrication and cooling systems particular to this engine.