Various methods exist today for increasing the effectiveness of internal combustion engines ( ICE) which are mainly focused on improving the thermodynamic processes in the engine, fuel efficiency, technological improvements. However little effort is put on finding new schemes of the main mechanism of the ICE which could improve its kinematic and dynamic characteristics. The aim of this research is to optimize the dynamics of the a new kinematic scheme of the slider-crank mechanism of ICE that allows us to achieve increased engine effectiveness by achieving maximum torque at maximum pressure of gases with a minimal volume of combustion chamber and also to achieve reduction of mechanical loads on engine components thereby reducing dimensions and mass of the engine. The optimal parameters of the new row two-shaft ICE that permits the achievement of the set goal were found and the achieved dynamic characteristics were compared to those of classical ICE. The study was carried out using vector modular models. (C) 2017 The Authors. Published by Elsevier Ltd.