抄録
The demand for high quality and high performance of an automobile internal combustion engine is increasing steadily. Thus the shift toward producing multi-cylinder engine and V-type engine has also intensified. In the first report, we have clarified a general analytical method that reduces the exciting moment and determines the suitable bank angle of V-type engine. We have also clarified that the effective cylinder arrangements of a V-type 10-cylinder engine are divided into 24 groups. In this report we calculated numerically the 1st-order exciting moment and obtained the suitable bank angle for each group. We obtained practical bank angles of V-type 10-cylinder engine with small pitching and yawing moment using a balance weight. We also describe in details concrete examples and the evaluation of a V-type 10-cylinder engine.
