A kind of fault detection method and related device for oil and gas separator
A technology for oil and gas separators and fault detection, which can be applied to machines/engines, mechanical equipment, engine components, etc., and can solve the problem of high maintenance costs
Active Publication Date: 2022-08-05
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] In order to solve the above technical problems, this application provides a fault detection method for the oil-gas separator. The processing equipment can take advantage of the fact that the pressure of the pure gas and the gas flow with oil impurities are different, and measure the speed and speed of the oil-gas separator in real time. Exhaust pressure to determine whether there is an abnormality in the oil-gas separator, so that the failure of the oil-gas separator can be found in time and reported, effectively reducing the problems of high oil consumption and high maintenance costs caused by the failure of the oil-gas separator
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[0035] The embodiments of the present application will be described below with reference to the accompanying drawings.
[0036] At present, the oil and gas separators used in vehicles generally adopt a closed-loop control strategy, that is, the gas separated by oil and gas will re-enter the intake pipeline. If the separation effect of the oil and gas separator fails, the oil impurities will be brought into the intake pipe. In the road, if the oil and gas separator cannot be repaired in time, the oil impurities will pass through the intake pipeline and adhere to the intake components such as the intake throttle valve and turbocharger, resulting in abnormal function of the components or even blockage, affecting the working properly, and these components are expensive to repair, resulting in a lot of unnecessary overhead.
[0037] In the related art, the state of the oil and gas separator is not monitored in real time, and the vehicle is only repaired by means of regular inspecti...
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The embodiment of the present application discloses a fault detection method for an oil and gas separator, the method includes: acquiring a target rotational speed and a first exhaust pressure corresponding to the oil and gas separator to be tested at a target time, and the target time is any time within the target time period , the target period is any period when the oil and gas separator to be tested is in the operating state; according to the mapping relationship between the rotational speed and the exhaust pressure, the second exhaust pressure corresponding to the target rotational speed when the oil and gas separator to be tested is working normally is determined; according to the first row air pressure and the second exhaust pressure, and determine the exhaust pressure difference; if the exhaust pressure difference is greater than the pressure difference threshold, add 1 to the number of alarms corresponding to the target period; if the number of alarms corresponding to the target period When the number of times threshold is exceeded, an alarm signal is generated, and the alarm signal is used to identify the failure of the oil-gas separator to be tested. The processing equipment can detect and report the failure of the oil and gas separator in time, effectively reducing the problems of high oil consumption rate and high maintenance cost.
Description
technical field [0001] The present application relates to the technical field of automobiles, and in particular, to a fault detection method and related device for an oil-gas separator. Background technique [0002] The oil and gas separator is one of the important components to maintain the normal operation of the vehicle. It is responsible for separating the oil impurities in the exhaust gas of the vehicle, so that the separated relatively pure gas can be re-entered into the intake pipeline for use. If the oil and gas separator fails, it will cause oil impurities to flow through the oil and gas separator pipeline and flow into the intake pipeline, causing harm to the vehicle. [0003] In the related art, the state of the oil and gas separator is not monitored in real time, and the vehicle is only repaired by means of regular inspection, so that it is impossible to give an alarm when the oil and gas separator fails, causing damage to the vehicle. SUMMARY OF THE INVENTION ...
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IPC IPC(8): F02B77/08
CPCF02B77/08
Inventor 王振庄明超孙建菲潘伟赵祥博赵希达
Owner WEICHAI POWER CO LTD