Fault detection method for oil-gas separator and related device
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: 2021-06-25
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] Embodiments of the present application are described below in conjunction with the accompanying drawings.
[0036] At present, the oil-gas separator used in vehicles generally adopts a closed-loop control strategy, that is, the gas after oil-gas separation will re-enter the intake pipe. If the separation effect of the oil-gas separator fails, oil impurities will be brought into the intake pipe. During the road, if the oil-air separator cannot be repaired in time, the oil impurities will pass through the intake pipe and adhere to the intake components such as the intake throttle valve and turbocharger, causing the components to function abnormally and get stuck or even blocked. work properly, and these parts are expensive to repair, causing a lot of unnecessary overhead.
[0037] In the related art, there is no real-time monitoring of the state of the oil-gas separator, but the vehicle is maintained through regular inspection and other methods, so that the oil-gas separa...
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The embodiment of the invention discloses a fault detection method for an oil-gas separator. The method comprises the steps: obtaining target rotating speed and first exhaust pressure of the to-be-detected oil-gas separator at a target moment, wherein the target moment is any moment in a target time period, and the target time period is any time period when the to-be-detected oil-gas separator is in an operation state; determining second exhaust pressure corresponding to the target rotating speed when the to-be-tested oil-gas separator works normally according to the mapping relation between the rotating speed and the exhaust pressure; determining an exhaust pressure difference value according to the first exhaust pressure and the second exhaust pressure; if the exhaust pressure difference value is greater than a pressure difference threshold value, adding 1 to the alarm frequency corresponding to the target time period; and if the alarm frequency corresponding to the target time period exceeds a frequency threshold value, an alarm signal is generated, and the alarm signal is used for identifying that the to-be-tested oil-gas separator breaks down. The treatment equipment can find and report faults of the oil-gas separator in time, and the problems of a high engine oil consumption rate, high maintenance cost and the like are effectively solved.
Description
technical field [0001] The present application relates to the technical field of automobiles, in particular to a fault detection method and a related device for an oil-gas separator. Background technique [0002] The oil-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 re-enter the intake pipeline for use. If the oil-air separator fails, the oil impurities will flow through the oil-air separator pipe and flow into the intake pipe, causing harm to the vehicle. [0003] In the related art, there is no real-time monitoring of the state of the oil-gas separator, but the vehicle is maintained through regular inspection and other methods, so that the oil-gas separator cannot be alarmed in time when the oil-gas separator fails, causing vehicle damage. Contents of the invention [0004] In order to so...
Claims
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Login to View More 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