Improved HCCI Combustion Timing Control with Decoupled Control of In-Cylinder Air/EGR Mass and Oxygen Concentration
    9.
    发明公开
    Improved HCCI Combustion Timing Control with Decoupled Control of In-Cylinder Air/EGR Mass and Oxygen Concentration 审中-公开
    在HCCI发动机与所述缸体和所述Sauestoffskonzentration在空气/ EGR质量的去耦控制Zünpunkts的改进的控制

    公开(公告)号:EP2080882A1

    公开(公告)日:2009-07-22

    申请号:EP08170604.6

    申请日:2008-12-03

    摘要: A method of controlling homogenous charge compression ignition (HCCI) combustion timing and pressure rise rate. A constant volume air pump (15), such as a supercharger, is equipped to provide a variable amount of fresh air to a turbocharger (12). The turbocharger drives a high pressure exhaust gas recirculation (EGR) loop (17). The fresh air intake and the EGR ratio are independently controlled. This combination of hardware allows for good control of combustion timing by providing for EGR variations without undue effect from varying oxygen concentration. Additionally, by adjusting the EGR ratio, the pressure rise rate during combustion can be controlled to reduce combustion noise.

    摘要翻译: 控制均质充量压缩点火(HCCI)燃烧定时和压力上升率的方法。 恒定体积的空气泵(15):如机械增压器,配备以提供新鲜空气量可变的涡轮增压器(12)。 所述涡轮增压器驱动一个高压排气再循环(EGR)回路(17)。 的新鲜空气进气和EGR比率unabhängig控制。 硬件的这种组合允许通过提供用于EGR变型而不脱离改变氧浓度过度的效果良好的控制燃烧正时的。 另外,通过调整EGR率,燃烧过程中的压力上升率可被控制以降低燃烧噪声。