Dynamic measurement device of oil leakage of turbocharger and measurement method thereof

Abstract

The invention relates to a dynamic measurement device of oil leakage of a turbocharger and a measurement method thereof. The device includes that a pressure micrometering valve (3), a pressure sensor (5), an oil returning pipe (6) and a reducing valve (11) are sequentially arranged at the top end of a voltage stabilization tank (1). The measurement method includes that a preset value can be achieved through starting of a to-be-detected turbocharger and controlling of rotation speed of the to-be-detected turbocharger, pressure of gas inside the voltage stabilization tank (1) is stabilized to be preset pressure through adjustment of the reducing valve (11) and the pressure micrometering valve (3), and oil flow of lubricating oil passing through an oil vent valve (18) is enabled to be smaller than oil flow of lubricating oil of the turbocharger which is to be detected through adjustment of the oil vent valve (18). The dynamic measurement device of the oil leakage of the turbocharger and the measurement method thereof can achieve real-time monitoring of the oil leakage of the turbocharger and measurement of an oil leakage rate of the lubricating oil of the turbocharger, achieve measurement for sealing performance of one end of the turbocharger, expand research range, improve the precision of measurement, reduce the difficulty of testing, save cost of testing, and save experimental period.

Description

technical field [0001] The invention belongs to the technical field of power machinery detection, and in particular relates to a turbocharger oil leakage measurement device and a measurement method thereof. Background technique [0002] Piston ring seals are commonly used in automotive turbochargers at present, and its function is to prevent lubricating oil from leaking to the air flow passage, and also prevent the gas in the air flow passage from leaking to the lubricating oil return chamber of the turbocharger. There is a certain fit gap in this sealing structure. During normal operation, since the pressure in the air flow channel is higher than the pressure in the lubricating oil return chamber, there will be no leakage of lubricating oil. However, in some special cases, the gas pressure in the lubricating oil return chamber If the pressure is higher than the air flow channel, if the engine is idling, the supercharger may leak oil. [0003] Unreasonable seal design, unre...

AI Technical Summary

Problems solved by technology

The leakage of lubricating oil in the supercharger is only a few milliliters per minute, and the flow rate of the lubricating oil in the normal operation of the supercharger is several liters per minute to tens of liters per minute, so this method is limited to the long-term cumulative leakage and can only be used for The measurement of lubricating oil leakage of the whole supercharger cannot detect the sealing performance of the sealing structure at one end of the supercharger

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