电喷车冷起动困难故障的简易修复（Simple repair of the cold starting difficulty of the electric vehicle）.doc

电喷车冷起动困难故障的简易修复（Simple repair of the cold starting difficulty of the electric vehicle） Paper example 2 - simple repair of the difficulty of cold starting of electric spraying vehicle Simple repair of the cold starting difficulty of the electric vehicle summary This paper mainly introduces a 94 bluebird car production, because of engine ECU control function has fault, causing the car cold start is difficult, by adding a composed of temperature sensor and the relay circuit, even if they dont replace new ECU this expensive computer parts, also can make the car reply good starting performance. Key words: cold starting difficulty; Gushing pulse width; Water temperature sensor Ii. Introduction Automotive electronic control fuel injection engine is the product of the electromechanical integration of new and high technology, especially the control system of engine, it set up with multiple sensors, actuators and electronic control components. When the control system works, various signals interpenetrate, control the intake, oil spray and ignition. Once a failure occurs, the boundary of the symptoms is blurred. And its just a partial failure and the other parts are still in good condition. And the control unit is generally a whole, to eliminate the local failure to go to the overall replacement assembly, economically uneconomical. So we must fully understand the structure and principles of electronic control fuel injection engine, and master relevant functions, using scientific analysis method and maintenance skills, to develop a practical and economic maintenance program, through some simple compensation measures, to make up for this part of the functions. To eliminate this local fault. Iii. Text (1) failure phenomenon There is a 94 production bluebird U13 car, engine model for SB20DE, cold start, to start a dozen times to the car, when the starting step dont step on the gas to the car, hot car is relatively better, after starting the engine work everything is normal, no oth