COMBUSTION CHAMBER STRUCTURE AND PARAMETER PRESUME METHOD FOR DIESEL ENGINE

摘要

PURPOSE: A combustion chamber structure for a diesel engine and a method for assuming variables are provided to obtain an effect of the reduction of exhaust gas and blow-by gas. CONSTITUTION: A method for assuming variables is composed of steps of; setting the values which are Db, db, Tb, Vb, Vc, Vd, Vs, A1, A2, A3, A4, and A5 to have an optimal value within the determined range; changing the value(A4) to the largest value to inhibit the initial combustion and activate the post-combustion by transmitting the high swirl to the end period of the combustion beyond a dead point; changing the value(A1) to the most smallest value after the change of the value(A4); and changing the value(A2) to the smallest value after the change of the value(A1).