Deciding the decisive mannered null crank slow layout angle in crank layout

摘要

PROBLEM TO BE SOLVED: To provide a practical method for determining arrangement angles of crank throws minimizing unbalance couple of forces acting as exciting force in a multiple cylinder reciprocating internal combustion engine.;SOLUTION: In this method for determining crank arrangement angles for a multiple cylinder reciprocating internal combustion engine expressing function of unbalance couple of forces expressed in a shape weighting unbalance force by distance of each cylinder with a dimensionless factor in a shape of an inner product of a vector and determining arrangement angle of the crank throw minimizing even number power of absolute value of a factor of the unbalance couple of forces in Cartesian coordinates under a restriction condition where the unbalance force function of the multiple cylinder reciprocating internal combustion engine is expressed by a dimensionless factor in a shape of an inner product of a vector and absolute value of factor of the unbalance force is set to a value allowed by surrounding environment of place where the internal combustion engine is installed or less.;COPYRIGHT: (C)2006,JPO&NCIPI