Gasoline Engine Electronic Control System For The Detection Of Diagnostic Studies

The rapid development of electronic technology and the construction of vehicle laws (save on energy, safety, emissions) is promoting the development of vehicle control technology. As an important part of vehicle, the engine was entered into an era of electronic control. The electronic technology of engine brings many advantages that are accuracy of control, stability of system, economization of fuel consumption and environmental protection of emissions? Meanwhile brings disadvantage that the check and diagnosis of breakdown. The article researched mainly the check and diagnosis of electronic control system of petrol engine.The article stated the basic composition and principle and development trend of electronic control system of petrol engine, analyzed how to getting on check and diagnosis by using manpower and all kinds of instruments when the system broke down. It researched mainly phenomenon and reasons and methods of differential commonly breakdown of petrol engine. It composed that engine cannot run, running is difficult, idle isn't good, increase power isn't enough , reduction not normal, fuel consumption is too more, ignition isn't normal, back firing in intake manifold, exhaust explosion, engine shake, intermittent ignition, temperature isn't normal , exhaust manifold belch smoke. Finally the article summarized the skills and basic principles and general sequence of check and diagnosis of electronic control system of petrol engine.