On-line engine oil quality monitoring system and method adopting multi-sensor information fusion

Abstract

The invention discloses an on-line engine oil quality monitoring system and method adopting multi-sensor information fusion. The engine oil quality monitoring system comprises a test oil circuit control valve, a metal abrasive grain detection device, a comprehensive quality detection device, a viscosity detection device, an engine oil cooling device, a data processing module, an STM32 measurement and control main unit, a man-machine interaction module and the like, wherein the viscosity detection device consists of an engine oil sampling device, a thermostatic oil-bath box, a heater, a constant-flow pump, a liquid level sensor, an oil-bath temperature sensor, a sampling temperature sensor, a pressure sensor, a balanced flow sensor and a pressure control valve. The on-line engine oil quality monitoring system is mounted at the downstream of a lubrication circuit oil pump of an automobile engine, can monitor the viscosity of engine oil, the content of metal abrasive grains and changes of such comprehensive qualities of engine oil as the pH value and the moisture content on line, adopts the multi-sensor information fusion technology to comprehensively analyze the oil state, displays information of the oil state through a display and sends an early-warning signal if necessary.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a multi-sensor information fusion online monitoring system and method for engine oil quality. Background technique [0002] According to statistics, automobile engine oil accounts for less than one-thousandth of the cost of automobile use, but its impact on the life of the automobile is far greater than 10%. Reasonable lubrication can reduce vehicle maintenance costs by 25%. After the engine oil has been used for a period of time, due to the mixing of external impurities and the oxidation, decomposition and condensation of the engine oil itself, its quality will change, and the lubricating performance will decrease, resulting in increased wear of parts and engine power performance. Fault. Therefore, it is very necessary to monitor the quality of the engine oil in use, so as to determine the reasonable replacement time of the engine oil, and reduce the failure caused by the dete...

AI Technical Summary

Problems solved by technology

The above-mentioned devices involved in monitoring the oil viscosity did not meet the test temperature requirement of 100°C stipulated in the national standard GBT8028-2010, the measurement principle was flawed, and the measurement results of the oil viscosity had large errors

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