Common Rail System Fault Diagnosis System

Abstract

The invention provides a common rail system fault diagnosis system. The common rail system fault diagnosis system comprises a fault type selection interface, fault type operation interfaces, a fault code inquiry interface and a learning function interface, wherein the fault type selection interface is used for displaying various common fault types of an engine, people can have access to the corresponding fault type operation interface after selecting a fault type, the fault type operation interfaces are used for displaying various diagnosis steps and normal data or normal graphs during diagnosis, the fault code inquiry interface is used for displaying the meaning of the current fault code and dealing measures, and the learning function interface is used for adding diagnosis steps which are not contained in the original system to the system. By the adoption of the common rail system fault diagnosis system, diagnostic reasoning can be conducted according to the fault type, detailed diagnosis steps can be provided, and fault diagnosis can be instructed; the position of the current diagnosis step in the whole diagnosis process and the diagnosis operation process can be learnt during diagnosis; the meaning of the fault code can be inquired; diagnosis methods which are not contained in the system can be learnt and added to the system.

Description

technical field [0001] The invention relates to maintenance of a high-pressure common rail fuel system, in particular to a common rail system fault diagnosis system. Background technique [0002] Now that diesel engines use electronic control technology, the system is becoming more and more complex. When a diesel engine fails, it is not a simple matter to quickly find the cause of the failure and the faulty parts. Although it is possible to determine the cause of some faults with the help of the fault light flashing, the help of the service manual, or reading the key parameters of the diagnostic instrument, in many cases (for example, the EUC function is not perfect, and the fault code cannot be displayed for some faults; or responsible Maintenance technicians are not very experienced), and the fault diagnosis of diesel engines still takes quite a while. [0003] Among the existing patents, there are two patents related to the content of fault diagnosis, Japanese Patent Ap...

AI Technical Summary

Problems solved by technology

If there is no clear fault code in the actual system, it is not easy to check the fault with this method; and the method of checking against the manual is time-consuming

[0005] U.S. Bulletin No. 2001 / 0002450 provides maintenance guidance to maintenance personnel based on the fault diagnosis program, but the relationship between each diagnostic step is not displayed, so maintenance personnel cannot know where the current diagnostic work is located in the entire diagnostic program, and do not know the current work. purpose and meaning of

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