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Anomaly detection method and device

An anomaly detection and anomaly technology, applied to engine components, machine/engine, engine control, etc., can solve problems such as cylinder scuffing and engine damage, and achieve the effect of avoiding engine damage

Active Publication Date: 2019-09-27
WEICHAI POWER CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

In this case, the cylinder on the side of the 360-degree crankshaft will often be misplaced, and the cylinder will soon appear, which will cause engine damage.

Method used

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053]In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comp...

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Abstract

The invention provides an anomaly detection method and device. After a vehicle is successfully started and carries out idling operation, the exhaust temperature values of air cylinders on the two sides of a vehicle engine are both collected, whether one of the two exhaust temperature values is abnormal or not is detected, if yes, the air cylinder of which the exhaust temperature value is abnormal is stopped, and the anomaly detection result of the air cylinder of which the exhaust temperature value is abnormal is obtained based on the oil injection quantity of the air cylinder which is not stopped. According to the anomaly detection method and device, when it is detected that one of the two exhaust temperature values is abnormal, the air cylinder of which the exhaust temperature value is abnormal is stopped, the anomaly detection result of the air cylinder of which the exhaust temperature value is abnormal is obtained based on the oil injection quantity of the air cylinder which is not stopped, whether the air cylinder with the abnormal exhaust temperature value is abnormal or not is determined based on the anomaly detection result, engine phase detection is conducted, and accordingly, the situation that an engine is damaged due to the fact that crankshafts of the air cylinders of the engine are subjected to 360-degree mistaken installing is avoided.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to an abnormality detection method and device. Background technique [0002] Large-bore engines generally have a displacement of more than 50 liters and more than 10 cylinders. They adopt a V-shaped layout and use two Electronic Control Units (ECUs) to control the cylinders on both sides respectively. When the crankshaft of one cylinder The ECU on this side cannot detect the error if it is installed incorrectly by 360 degrees, and the engine can also be started when the crankshaft of the cylinder on one side is installed incorrectly by 360 degrees and the cylinder on the other side is assembled correctly. In this case, it will often cause the cylinder on the 360-degree side of the crankshaft to be misinstalled, and the cylinder will soon appear scuffing, which will cause damage to the engine. Contents of the invention [0003] In view of this, an abnormality detection method an...

Claims

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Application Information

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IPC IPC(8): F02B77/08F02D29/02
CPCF02B77/083F02D29/02
Inventor 孙明峰樊红秦涛李国朋曹石武迎迎辜大海
Owner WEICHAI POWER CO LTD
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