Exciting moment analysis of VR-type engine

A V-type 6-cylinder engine in a special compact design was developed several years ago by Volkswagen. The bank angle was a 15 degrees narrow angle(cylinders are offset). This engine is located between the straight(single cylinder head, small width and good balancing of the oscillating inertia forces)and V-type(short design)engines and combines both the advantages. This is called a VR-type engine. In this study, the conditions that can change a straight engine into a VR-type design without a cylinder offset as well as the exciting moment which occurs in the VR-type engine are analyzed. Finally, in the case of engines with a set number of cylinders, it examines the feasibility and the limit bank angle of a VR-type design.