Abstract
It is known that there is the influence of mass and geometric parameters such as the ratio of the lengths of crankshaft and
connecting rod of the main mechanism of ICE on the dynamic characteristics of the engine. At the same time the effect of the
mutual disposition of crankshafts in multi-cylinder engines on the dynamic characteristics that depend on the location of the
cylinders themselves (in-line, v-shaped, horizontally-opposed engine) is not analyzed. The goal of the research is to evaluate the
impact of changes in the angle between the crankshafts depending on the position of the cylinders, on improvement of the
dynamic characteristics of ICE. For the solution of the matter in question was used the software package KDAM developed on
the basis of the method of vector space model, which is capable of modeling different linkages, as well as the indicator diagrams
of ICE. The results of numerical experiment show that parameters under consideration do not significantly effect on the amount
of torque, but at the same time, their optimization reduces the load on the crankshaft and the vibration of the motor housing. It is
important to understand that the obtained results are optimal only for the selected weight dimension characteristics of units and
their locations. At the same time, it can be concluded that for the different types of ICE, due to their structural optimization can
be obtained less dynamically loaded constructions.
© 2014 The Authors. Published by Elsevier Ltd.
Peer-review under responsibility of organizing committee of the Dynamics and Vibroacoustics of Machines (DVM2014).
Keywords: vector; contour; model; modules; slider-crank mechanism; an internal combustion engine; indicator positioning diagram.
* Corresponding author. Tel.: +7-905-018-2468;
E-mail address:029-029@mail.ru.
2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND licens