FIELD: engine construction; measurement technology.
SUBSTANCE: internal combustion engine is subject to inspection by means of continuous finding of indicator diagram of cylinder depending on angle of rotation of shaft or from time due to stresses induced in studs or bolts that fix head of assembly of cylinders. Diagram and its digital characteristics are compared with reference ones. Indicator diagram of cylinder is achieved by means of preliminary built calibration dependence, which was built simultaneously from current values of stresses and pressures in cylinder at no less than three values of angles of rotation of shaft. Indicator diagram is used to calculate digital characteristics and to compare them with reference ones to determine technical condition of engine.
EFFECT: improved precision of diagnostics of technical condition of engines.
4 cl, 3 dwg
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