METHOD OF DETERMINING VOLUME OF INTERNAL COMBUSTION ENGINE CRANKCASE Russian patent published in 2025 - IPC G01F17/00 

FIELD: mechanical engineering; measuring.

SUBSTANCE: method of determining volume of an internal combustion engine crankcase relates to machine building. Method comprises: during the preparatory stage at the outlet of the receiver with the help of a gas reducer with a closed valve in the crankcase, a pressure of not less than 300 kPa is set, monitoring with the help of a pressure gauge, then providing an air flow rate of not less than 40 l/min, opening the valve to the required value, controlling the air flow meter, after establishing the required air flow mode and switching on the pressure recording system, the process of recording the time and pressure in the crankcase using a pressure sensor is started, at the measurement stage, the air outlet valve is shut off and when the specified pressure is reached for 1 minute, the rate of pressure rise in the crankcase is continued, as per the results of the obtained measurements, the value of air leaks is determined and the volume of the crankcase is calculated using the given formula.

EFFECT: simpler process of measuring volumes of complex shape, such as crankcase of an internal combustion engine, while improving measurement accuracy.

1 cl, 4 dwg, 4 tbl