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在一台非道路用中型发动机上展开了燃油喷射系统、进气系统以及废气再循环(EGR)系统控制策略的研究、开发。该方案旨在采用高压共轨燃油喷射系统,通过优化喷油嘴参数将发动机的颗粒(PM)排放控制在0.02 g/kW.h以下。为了寻求NOx,PM排放及燃油经济性之间的最佳均衡关系,该燃油喷射系统具有较高的控制柔性,最高喷射压力可达200 MPa。阐明了该系统结合采用特殊特性的喷油嘴和燃烧室结构对降低PM排放的潜力。还阐明了控制机油消耗对于避免PM中含有大量可溶性有机组分的重要性。这种技术配置不但可以减少CO2排放和溶解到机油中的碳烟,而且从寿命周期费用角度考虑对用户来说也是非常有利的。
Research and development of control strategies for fuel injection systems, intake systems, and exhaust gas recirculation (EGR) systems were carried out on a non-road medium engine. The program is designed to use a high pressure common rail fuel injection system to control particulate emissions (PM) below 0.02 g / kW.h by optimizing injector parameters. In order to seek the best balance between NOx, PM emissions and fuel economy, the fuel injection system has a high control flexibility, the maximum injection pressure up to 200 MPa. The system is combined with the potential to reduce PM emissions by combining a nozzle with a special feature and a combustion chamber structure. It also states the importance of controlling oil consumption to avoid the PM containing large amounts of soluble organic components. This technical configuration not only reduces CO2 emissions and soot dissolved in the oil, but also benefits the user in terms of life cycle costs.