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Non-road engine fault detection method based on fuel quantity consistency of fuel injector

A technology of engine and fuel injection quantity, which is applied in the direction of machines/engines, engine components, mechanical equipment, etc., can solve the problems of not being able to visually display the running state of the engine, and achieve the effect of intuitive judgment and elimination of time delay

Active Publication Date: 2022-06-24
WUXI WEIFU HIGH TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the method for judging the amount of fuel in the related art has time delay and cannot directly display the running state of the engine

Method used

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  • Non-road engine fault detection method based on fuel quantity consistency of fuel injector
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  • Non-road engine fault detection method based on fuel quantity consistency of fuel injector

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Embodiment Construction

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0033] First, briefly introduce the terms involved in the embodiments of this application:

[0034] Off-road engine is a general term for engines that are used for other purposes than exclusively in automobiles. The term is often used by regulators to classify engines to control their emissions. . In the related art, at least one sensor is installed in an off-road engine to acquire parameters such as engine speed, coolant temperature, oil pressure, oil temperature, and the like. Optionally, on-road engines do not have such sensors, so the fault detection method involved in this application is used in off-road engines. Optionally, the engine involved in the present application includes at least one of an engine in a generator set, an en...

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Abstract

The invention relates to a non-road engine fault detection method based on fuel injector fuel quantity consistency, and relates to the field of fault diagnosis in a diesel engine electronic control system. The method comprises the steps of obtaining target working condition data of a target engine in a target time period; comparing the target working condition data with the to-be-iterated working condition data to obtain a similarity comparison result; and in response to the fact that the sensor parameter comparison sub-result indicates that the target sensor parameter is similar to the to-be-iterated sensor parameter and the fuel injection quantity comparison sub-result indicates that the target fuel injection quantity is not similar to the to-be-iterated fuel injection quantity, it is determined that the target engine has a fault. In the fault detection process, the state of the fuel injector is judged according to fuel quantity comparison of the fuel injector in different time periods in the same state. The state of the fuel injector is judged more visually through the fuel quantity, pre-calibration before delivery is not needed, time delay is eliminated, and the running state of an engine is visually reflected.

Description

technical field [0001] The present application relates to the field of fault diagnosis in an electronic control system of a diesel engine, in particular to a fault detection method for an off-road engine based on self-learning and working conditions of an injection engine. Background technique [0002] In off-road vehicles and other industrial machinery and equipment, off-road engines play an important role as their driving components. Since the working state of the engine has a great correlation with the working efficiency of the industrial machinery and equipment, it is necessary to detect and deal with the fault of the engine in real time. However, the working state of the fuel injector of the engine common rail system is related to the working condition of the engine, so the engine fault detection is usually carried out in combination with the fuel quantity of the fuel injector. [0003] In the related art, the fuel injector can collect data before leaving the factory o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B77/08
CPCF02B77/083Y02T10/40
Inventor 秦飞梁刚奚淼琰严伟强
Owner WUXI WEIFU HIGH TECH CO LTD
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