Asd Control Strategy Based On The High-pressure Common Rail Diesel Engine Applications

Diesel engine has being developed into better economy and higher power percentage, which is driven by the depletion of conventional energy and the increasing stringent emission regulations. However, with the development of microprocessor and electronic control technology, diesel engine electronic control system can realize real-time monitoring engine work processes. According to the changes of work processes, system can calculate actual fuel quality, fuel pressure and time to improve combustion. As the result the engine has strong power, economy and emissions. As one of three most advanced means in the field of internal- combustion engine industry at the end of the 20^th century, High-pressure Common Rail Diesel Engine can achieve the desired fuel injection rule, considered to be the most effective and economical means to solve environmental and energy-saving dual pressure. As far, Electronic Control Unit (ECU) which is the most important research and development content has become a hotspot.In the premise of comprehensive analysis on the domestic and international development, application and dynamic of the High-pressure Common Rail system, the paper made emphasis on the Control Strategy of ASD, namely Active Surge Damper. The paper summarized the existing diesel engine speed control system theory, firstly researched theoretically High Pressure Common Rail speed conditioning control strategy .Using of hierarchical design and modular thinking, author designed control software. In the basis of tight clear active damping control logic relationship, it established different parts of the speed control system, like ASDrf and ASDdc, analyzed theoretically the speed control system parameters infection on entire speed control system capability, presented performance indicators to measure speed and system parameters tuning method and the selection of parameters based on the theory and practice.Finally using ETAS-ASCET software, author simulated and emulated diesel engine speed control system. It established specific internal block diagrams of modules and choices of control parameters; it analyzed results of the simulation, validated each of modules feasibility and the diesel engine control system function.