DIAGNOSTIC METHOD OF INTERNAL COMBUSTION ENGINE Russian patent published in 2020 - IPC G01M15/00 G01M15/12 

FIELD: technical diagnostics.

SUBSTANCE: diagnostic method of internal combustion engine (ICE) relates to the field of technical diagnostics, in particular to measurement equipment, based on measurement of the active value of the frequency spectrum, electrical energy vibration of the ICE body surface of the new article and its effective value for moments after repair use, the method consists in measuring working rod R of crank-conrod, cylinder-piston, gas-distributing and other ICE mechanisms, working motor resource is measured by amplitude of vibration energy of the housing surface for all working volumes of cylinders (WVC) in ICE of all types, during start-up, determined by the vibration energy measurement sensor, the sensor measuring the vibration energy of the ICE housing surface comprises a sound frequency microphone which is mounted in the pointed-on vibration probe, ICE working motor resource is evaluated according to the Poisson reliability law by the parameter "a", the compression value in the WVC of all ICE types, the working motor resource is determined by the formula R=(I_n/I_e) × 100 W, where: I_n is the effective value of electric current of the new ICE, I_e is the effective value of electric current at the moment of start-up, the start-up time of the internal combustion engine is set by formula T_start≥T_fc. Start-up time of all types of ICE shall be greater than or equal to the time of the full cycle of energy conversion in all WVC in ICE, where T_start is ICE starting time, T_fc is time of full cycle of energy conversion in ICE.

EFFECT: invention discloses a diagnostic method of an internal combustion engine.

1 cl, 10 dwg