High Pressure Common Rail Injector Test Stand Development And Research

With diesel technology development, in diesel engine fuel injection system raised taller requirement, using electric jet technology, is the development trend of diesel engine technology. In the 1990s the diesel engine was common rail systems.common rail electronic-control fuel injection system rejected traditional mechanical system, the creation of a new concept injection system and get a fairly rapid development, it represents the future diesel engine fuel injection system development direction.Diesel engine fuel system using common rail technology can optimize fuel injection law and injection quantity control strategy, adjusting pre-mixing combustion and diffusion burning diesel fuel quantity, improve efficiency and reduce diesel engine noise. Is to improve the engine performance, reduce the harmful emissions from one of the most effective technology. High pressure common rail fuel injection system realization of fuel injection system is through the injector structure and injector performance test and research on test data, based on the reasonable, seek further analyzing the structural parameters of the results obtained.Therefore, establishing common rail injector performance test platform, obtain injector fuel injection law data, applying common rail injector performance test platform is to develop fuel injection system injector fuel injection law optimization control strategies of the necessary technical measures.This topic research aim is to design and build common rail injector test bench. Through the establishment of the test rig completed the common rail injector performance testing and evaluation. With Linux operating system as the core of the electromechanical integration system; Namely system consists of mechanical and hydraulic hybrid unit, electronic unit module. Design the function, mechanical and hydraulic constitutes unit to diesel as medium, using hydraulic system, establishing diesel engine combustion chamber pressure simulation environment, as measuring common rail injector performance of physical device.In short, the purpose of this research is to establish a set of embedded system control common rail injector performance test platform, for follow-up thorough research foundation, and to further enhance its measurement performance, providing valuable experience.