Internal and external LP EGR for boosted engines
    1.
    发明授权
    Internal and external LP EGR for boosted engines 有权
    用于升压发动机的内部和外部LP EGR

    公开(公告)号:US07934486B1

    公开(公告)日:2011-05-03

    申请号:US12753716

    申请日:2010-04-02

    IPC分类号: F02B37/12 F02M25/07

    摘要: A method for controlling combustion in a combustion chamber of a turbocharged engine is described. The method includes admitting to the combustion chamber prior to ignition a first amount of exhaust from an intake manifold of the engine, the first amount changing at a first rate in response to a changing engine load. The method also includes retaining in the combustion chamber prior to the ignition a second amount of exhaust from the combustion chamber, the second amount changing at a second rate, greater than the first rate, in response to the changing engine load.

    摘要翻译: 描述了一种用于控制涡轮增压发动机的燃烧室中的燃烧的方法。 该方法包括在点燃之前向燃烧室通入来自发动机的进气歧管的第一量的排气,第一量度响应于变化的发动机负荷以第一速率变化。 该方法还包括响应于变化的发动机负载,在点火之前在燃烧室中保持来自燃烧室的第二量的排气,第二量以第二速率改变,大于第一速率。

    Hybrid high-pressure low-pressure EGR system
    9.
    发明授权
    Hybrid high-pressure low-pressure EGR system 有权
    混合式高压低压EGR系统

    公开(公告)号:US08001779B2

    公开(公告)日:2011-08-23

    申请号:US12730580

    申请日:2010-03-24

    摘要: An example system for inducting air into an engine includes a compressor and a turbine mechanically coupled to the compressor and driven by expanding engine exhaust. The system also includes high pressure (HP) and low pressure (LP) exhaust gas recirculation (EGR). The disclosed system allows EGR to be routed from an HP take-off point to an LP mixing point. Such functionality may be useful in averting compressor surge and increasing EGR flow potential under certain operating conditions.

    摘要翻译: 用于将空气引入发动机的示例性系统包括机械地联接到压缩机并通过扩大发动机排气来驱动的压缩机和涡轮机。 该系统还包括高压(HP)和低压(LP)废气再循环(EGR)。 所公开的系统允许EGR从HP起飞点路由到LP混合点。 这样的功能可能有助于在某些操作条件下避免压缩机喘振和增加EGR流动电位。