Study On The Electrical Injection Matching Experimentation For LX200-2 Motorcycle

Along with the strict environment protection regulation and the raising price of fuel , it is very hard for the traditional carburetor-mounted engine to meet the requirement of high power,low fuel consumption and less pollution, and it is well known that the electronic controlled fuel injection system is the only and best way which can meet the needs.This project is based on the LX200-2 motorcycle(using carburetor gasoline engine of LC163FML-2)made in Chongqing Loncin Industry (Group) Co., Ltd. The goal of the task is making vehicle's exhaust emission fulfill the Emark-III standard while keeping consistent on power output and fuel economy. The following main work is:(1) alteration of the components : through optimizing the engine air input system, altering the magneto and adding the sensor of running speed and position, changed the carburetor-mounted engine into electronic controlled engine ,then rebuilding the vehicle fuel- supplying system, fixing lambda sensor on the muffler to achieve closed loop control(2)confirm the control element: after analysis , confirm the A/F ratio and ignition time as the control element (3)calibration of the engine parameters: estimated fuel-injection and ignition time beforehand, then adjusted the time exactly , and made the injection and ignition time as MAP deposited into the ECU.(4)optimized vehicles'parameters in all kinds of running state,including start-up,quickly accelerated.then deposited the parameters' changes into the ECU.(5)environment test: having test in different environment , including tableland,high temperature area and lower temperature area , checked the reliability of assembly components, modified related parameters according to the changes. at the same time , verified the self-learning function of ECU.As the company doesn't possess any technical deposit or accumulate ,so it's a exploring work . Through looking for the best way for the electronic control system alteration, finally reached the object of advancing technology level. After more than one year's hard work, the project have finished and reached it's purpose . the project made a massy foundation for the following electronic control alteration on motorcycle.