Method and system for pre-ignition control
    34.
    发明授权
    Method and system for pre-ignition control 有权
    预燃控制方法和系统

    公开(公告)号:US08439011B2

    公开(公告)日:2013-05-14

    申请号:US13465771

    申请日:2012-05-07

    IPC分类号: F02M7/23 F02D41/30

    摘要: Methods and systems are provided for addressing cylinder pre-ignition by adjusting a spray angle of fuel injected into a cylinder responsive to an indication of pre-ignition. A spray pattern of fuel injected in the cylinder is varied based on a cylinder pre-ignition count to reduce cylinder wall impingement of injected fuel while improving air-fuel mixing in the cylinder.

    摘要翻译: 提供了方法和系统,用于通过根据预燃点的指示调节喷射到气缸中的燃料的喷射角来寻址气缸预点火。 喷射在气缸中的燃料的喷射模式基于气缸预点火计数而变化,以减少喷射燃料的气缸壁冲击,同时改善气缸中的空气 - 燃料混合。

    Ion Sense and Control for Ignition Energy Management
    37.
    发明申请
    Ion Sense and Control for Ignition Energy Management 有权
    用于点火能量管理的离子感测和控制

    公开(公告)号:US20120150415A1

    公开(公告)日:2012-06-14

    申请号:US13397863

    申请日:2012-02-16

    IPC分类号: F02P3/00 F02P15/08

    摘要: A system and method for operating an engine having ionization signal sensing include detecting plug fouling and controlling the engine using progressively more aggressive control strategies if the fouling condition persists. A first control strategy may be used when the number of engine starts or running time are below corresponding thresholds and a second strategy otherwise. The first strategy may employ progressively more aggressive control procedures to eliminate spark plug deposits that may include repetitive sparking, exhaust cycle sparking, increasing engine loading, advancing spark timing, increasing air/fuel ratio, and increasing idle speed, for example. The second strategy may include similar corrective actions employed in a different order and/or to a lesser degree in an attempt to eliminate plug fouling without any noticeable change in engine operation or performance as perceived by the vehicle operator. The control strategies may be applied to individual cylinders, cylinder banks, or all cylinders.

    摘要翻译: 用于操作具有电离信号感测的发动机的系统和方法包括如果污垢状况仍然存在,则检测堵塞污垢并且使用逐渐更积极的控制策略控制发动机。 当发动机启动次数或运行时间低于相应阈值时,可以使用第一控制策略,否则第二策略。 第一种策略可采用逐步更积极的控制程序来消除火花塞沉积物,例如可能包括重复火花,排气循环火花,增加发动机负荷,提前火花正时,增加空气/燃料比,以及提高空转速度。 第二种策略可以包括以不同的顺序采用的类似的纠正措施和/或在较小程度上试图消除堵塞堵塞,而不会由车辆操作者感觉到发动机操作或性能的任何明显改变。 控制策略可以应用于单个气缸,气缸组或全部气缸。

    Engine exhaust temperature regulation
    38.
    发明授权
    Engine exhaust temperature regulation 有权
    发动机排气温度调节

    公开(公告)号:US08099949B2

    公开(公告)日:2012-01-24

    申请号:US12120879

    申请日:2008-05-15

    IPC分类号: F01N3/00

    摘要: In one example, a method of operating an engine in a vehicle is described. The method comprises delivering a first substance to a cylinder of the engine from a first injector; delivering a second substance to the cylinder of the engine from a second injector, where the second substance has a greater heat of vaporization than the first substance; and increasing injection of the second substance responsive to an exhaust over-temperature condition.

    摘要翻译: 在一个示例中,描述了在车辆中操作发动机的方法。 该方法包括从第一注射器将第一物质输送到发动机的气缸; 从第二喷射器将第二物质输送到发动机的气缸,其中第二物质具有比第一物质更大的汽化热; 并且响应于排气超温条件增加第二物质的注入。