Development Of Diesel Engine Electronic Unit Pump Control Strategy

The main content of this thesis is based on the torque control electric unit pumpcontrol strategy development, the ECU controller use Germany infineon XC2765controller, the application of Tasking compile software as bottom drive platform, andbased on the camshaft and crankshaft sensor signals to drive the unit pump systeminjection timing and injection pulse width control. Matlab/Simulink as be the uppercontrol strategy developing tools, realize the engine conditions switch, and trealizecylinder balance of the system in the process of fuel injecting. We eventually generate Ccode through the RTW of the Simulink module and integrate into the Tasking software,which realize the logic relation and unified. ECU calibration one important link ofautomotive electronic development.In this topic, we develop calibration tool depend onCCP protocol which based on CAN bus, developing the calibration tool used LABVIEWand based on the torque control to realize the ECU development and control function.We use six cylinder unit pump which is provided by YuChai as the main injectiondrive module, do calibration on the engine test-bed,and using EGR to exhaust processingin the corresponding engine to reduce the effect of NOXin the exhaust gas. At the sametime, we install VGT to improve the engine’s power, and interacte with the EGR, so as topromote the emission quality and power control.This topic not only do theory research of the engine control and engine modeling, butalso do the testing basis of the engine bench,it will have practical application in the laterdevelopment, so this topic has high research value and significance, provide a referencestandard for automobile engine emission control.