A Theoretical Model For Selection Of V-Angle And Determination Of Firing Order For Balancing Of V6-Engine

V-engines are subjected to noise and vibrations caused due to unbalanced inertial forces and moments, which makes its operation quite complicated. In order to minimize these vibrations, the unbalanced forces and moments are analyzed on a reciprocating engine for different V-angles. Firing order has a great influence on balancing of V-engine. This paper aims at making a major contribution for selecting the V-angle for six cylinders Vengine based on dynamic behavior of reciprocating engine. V-angle and firing order is decided by primary and secondary forces and moments. But theoretical analysis of primary and secondary forces and moments is very difficult, complex and time consuming. To overcome this difficulty, a Matlab program is developed. This program calculates the various unbalanced primary and secondary forces and couples for different V-angles in V6-engine along with different possible firing order so one can select proper combination of firing order and V-angle for optimum unbalance forces and moments.