METHOD FOR DETERMINING TECHNICAL STATE OF INTERNAL COMBUSTION ENGINES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01M15/00 G01M15/04 

FIELD: internal combustion engines.

SUBSTANCE: invention relates to instrument making, in particular, to determination of technical state of internal combustion engines (ICE) with additional equipment by measuring speed-ups of acceleration and coasting, hour fuel consumption, given acceleration harmonics under operating conditions. Method is based on continuous measurement in engine operation cycle with reference to crankshaft turning angle during multiple accelerations without load, as well as coastings, various ICE parameters. Device comprises engine shaft rpm sensors, synchronization and hourly fuel consumption sensors, two level selectors, a unit for differentiating the origin of angular marks, a unit for synchronizing the beginning of the count of angular marks, setting the angular marks of the cylinders, the numbers of the angular marks of the cylinders, the frequency of the measurement, the numbers of the harmonics, level of equilibrium, nominal values of hourly and specific fuel consumption, two differentiators, converter of time interval into code, temporary storage register, units of signal registers and calculation of rotation frequency, unit for storing accelerations and calculating a coefficient of non-uniformity, a clock pulse generator, a unit of digital tunable filters, a computer of average value and maxima, meters of hourly flow rate of fuel, power loss factor for additional equipment, cylinders and engine as a whole with additional equipment and without it, indicator efficiency coefficients of cylinders and engine as a whole, scheme of preparation for operation.

EFFECT: technical result is reduced labour intensity of determining the technical state of internal combustion engines with additional equipment in operating conditions, as well as high accuracy of diagnosing additional standard equipment without dismantling.

4 cl, 1 dwg