Fault diagnosis method and device for differential pressure sensor, and processor
A fault diagnosis and sensor technology, which is applied in the diagnosis device of exhaust treatment device, exhaust treatment, electronic control of exhaust treatment device, etc., can solve problems such as low reliability and inaccurate selection of diesel regeneration timing, and achieve improvement Operational stability, solve the effect of low reliability
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Embodiment 1
[0029] According to an embodiment of the present invention, a method embodiment of a method for diagnosing a fault of a differential pressure sensor is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be implemented in a computer system such as a set of computer-executable instructions. and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.
[0030] figure 1 is a flowchart of a fault diagnosis method for a differential pressure sensor according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:
[0031] Step S102, when it is determined that the engine of the target vehicle is in the parking regeneration mode, obtain a first rotational speed value of the engine;
[0032] Optionally, in the above steps, the parking regeneration is that when the carbon load reaches th...
Embodiment 2
[0061] According to an aspect of the embodiments of the present invention, a fault diagnosis device for a differential pressure sensor is also provided, image 3 is a schematic diagram of a fault diagnosis device for a differential pressure sensor according to an embodiment of the present invention, such as image 3 As shown, it includes: an acquisition module 31 , a detection module 33 and a fault diagnosis module 35 . The fault diagnosis device of the differential pressure sensor will be introduced in detail below.
[0062] an obtaining module 31, configured to obtain the first rotational speed value of the engine when it is determined that the engine of the target vehicle is in the parking regeneration mode;
[0063] The detection module 33 is configured to perform stability detection on the differential pressure value of the differential pressure sensor when it is determined that the first rotational speed value reaches the first predetermined rotational speed value, and ob...
Embodiment 3
[0074] According to an aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, where the computer-readable storage medium includes a stored program, wherein when the program is run, a device on which the computer-readable storage medium is located is controlled to execute any one of the pressures Fault diagnosis method of differential sensor.
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