To the issue of the order of six-stroke engines working strokes and the schemes of the crankshafts

Abstract

Currently, the feasibility of implementing a six-stroke cycle in modern land and water transport engines is being discussed. The history of the creation and development of engines with six-stroke workflow is presented. The analysis of the research is made. It is noted that the problem of vibro-activity of six-stroke engines has not been studied yet. In this connection, this research was undertaken to be considered as the initial formulation of the problem. The task of order of working strokes was solved according to the method applied to the four-cylinder inline and six-cylinder, eight-cylinder, ten-cylinder, twelve-cylinder V-engines, which work on four- and six-cycle cycles, and which are most common in almost all types of transport. For six-stroke engines, digitized indicator diagrams were used. Initially it was assumed that the engines had traditional four-crank flat and three-crank spatial crankshafts. It has been suggested that a change in the pattern of the crankshaft of the cranks of the shaft can be helpful to improve the uniformity of torque. In this regard, an attempt was made to calculate the total torque of a four-cylinder engine with a cruciform crankshaft, the use of which is known in two-stroke engines. In this case, the moments inertia forces of the first order become unbalanced in the engine and they are eliminated by installing the balancing mechanism. As a result of the study, it has been shown that the implementation of a six-stroke working cycle with the additional injection of water into the cylinder led to some deterioration in the uniformity of working strokes alternation and uniformity of torque. The use of particular crankshaft patterns may contribute to some improvement in these indicators.