Abstract
In the article the attempt of using the motion stor-age characteristics was showed, to estimation of internal combustion engine - receiver cooperation. Basing on the external characteristics designated on chassis dynamome-ter, for various variants of power systems, it was tried to apply for applicability of proposed indicator. Initial analy-sis confirmed the usefulness of subjected characteristics, especially in the case of alternatively powered by LPG engines with extended adaptation cycle. Additionally, by using partial speed characteristics of the engine by various power degree, which simulated degrees of operational wear, the significant parameter of the motion storage char-acteristics was set with commonly used in engine - receiver analysis parameter, which is elasticity coefficient. The setting showed the legitimacy of designation the motion storage characteristics, whose the slope lets on one hand to evaluate the energetic parameters, on the other hand - to assess the engine - receiver cooperation stability. DOI: http://dx.doi.org/10.5755/j01.mech.20.1.6592
Highlights
The basic problem of the diagnosing process of operation state of drive sources, which are internal combustion engines, is to assume such diagnostic parameter or indicator, which can let the exact clarification of the stable work range and unstable work range
That implies the attempt of adaptation the parameter, which is the motion storage characteristics, for purpose of diagnosing the engine - receiver cooperation at specified load and speed conditions
Part C shows proper cooperation, in stage in D range occurs “break of power”, where due to safety considerations the test ends, for fear of power unit damage. In this aspect it is seeking for capabilities of using motion storage characteristics in reference to engine
Summary
The basic problem of the diagnosing process of operation state of drive sources, which are internal combustion engines, is to assume such diagnostic parameter or indicator, which can let the exact clarification of the stable work range and unstable work range. It is worth emphasising, that the internal combustion engine generates the torque at specified rotational speed, at given load. In the case of indicators such as power, torque, rotational speed, fuel consumption and exhaust gas composition, their estimation and compliance with values declared by manufacturer, or required by homologation regulations, concern mostly some ranges, largely only chosen points on the characteristics designated in research process. Where Tmax is maximum torque value, TPmax is torque value at maximum power, nPmax is rotational speed value at maximum power, nTmax is rotational speed value at maximum torque (Fig. 2)
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