System, Fuel Injection Engine Fault Diagnosis Based On Visual Prolog Language

The main idea of AI is imitated and realizes the human intellectual behavior with the computer. AI system is a knowledge process system, it including three questions; they are knowledge representation, knowledge utilization and knowledge acquisition. Diagnostic expert system is an important branch of AI.This paper has introduced the logic programming language -Prolog including the basic program section, facts section and the method of searching for solutions. At same time, the paper has explained the architecture of production system and control strategy with the small example of IDENTIFIER.Visual Prolog has already become a widely used AI programming language in logic and international developing tools and environment, which is a powerful, general-purpose, intelligent and integrated visual studio. In according with the, Under the visual programming environmental VDE, this paper combines character of electronic-control engine maintenance, developed a diagnose expert system based on Visual Prolog, designed user interface of the diagnosis software and written source code. The system simulates maintenance process in the real world, file on the vehicle and follow the fault code prompt to examine and repair. If there's no fault code appears, the system adopt the discharge analytic approach, diagnose fuzzily according to the discharging value of tail gas. The system can offer the general maintenance methods for common trouble, and arrange them in an order according to the trouble incidence, guiding maintenance. To the difficult trouble, the system can add the steps of overhauling, and expand the knowledge base.