Method for improving spark ignited internal combustion engine
acceleration and idling in the presence of poor driveability fuels
    3.
    发明授权
    Method for improving spark ignited internal combustion engine acceleration and idling in the presence of poor driveability fuels 失效
    在驾驶性差的燃料存在的情况下,改善火花点燃内燃机加速和空转的方法

    公开(公告)号:US5957994A

    公开(公告)日:1999-09-28

    申请号:US689570

    申请日:1996-08-12

    摘要: A method for accelerating the rotational speed of a crankshaft of an internal combustion engine having a plurality of cylinders each having a spark plug wherein a predetermined amount of delivered fuel is to be combusted at a firing time within each of the plurality of cylinders with each rotation of the camshaft or crankshaft based on an acceleration input made by an operator includes the step of receiving the accelerating input, measuring the rotational speed of the crankshaft, defining an expected engine speed based on the acceleration input, calculating a speed error as the rotational speed of the crankshaft less the expected engine speed, calculating engine acceleration and adjusting the predetermined amount of fuel delivered to be combusted in each of the plurality of cylinders to reduce the speed error when the speed error is a function of the instantaneous engine speed. The preferred embodiment is implemented using fuzzy logic.

    摘要翻译: 一种用于加速具有多个气缸的内燃机的曲轴的转速的方法,每个气缸均具有火花塞,其中预定量的输送燃料将在多个气缸内的每个气缸内的燃烧时间内每次旋转 基于由操作者进行的加速度输入的凸轮轴或曲轴的步骤包括接收加速输入的步骤,测量曲轴的转速,基于加速度输入来定义预期的发动机转速,计算速度误差作为转速 的曲轴减去预期的发动机转速,计算发动机加速度并且调节在多个气缸中的每一个中输送到待燃烧的燃料的预定量,以当速度误差是瞬时发动机转速的函数时减小速度误差。 优选实施例使用模糊逻辑实现。

    Adaptive fuel control strategy for engine starting
    5.
    发明申请
    Adaptive fuel control strategy for engine starting 审中-公开
    发动机启动的自适应燃料控制策略

    公开(公告)号:US20090107441A1

    公开(公告)日:2009-04-30

    申请号:US11925532

    申请日:2007-10-26

    IPC分类号: F02D41/06

    CPC分类号: F02D41/062 F02D2200/0612

    摘要: As one example, a method is provided for controlling a relative amount of air and fuel that is provided to a combustion chamber of an internal combustion engine. The method comprises adjusting a relative amount of air and fuel provided to the combustion chamber during an engine start based on a volatility of the fuel identified during a previous engine start. As another example, a vehicle engine system is provided, comprising: an internal combustion engine including at least one combustion chamber; a fuel injector configured to provide fuel to the combustion chamber; a fuel system operatively coupled with the fuel injector including a fuel storage tank; a control system configured to vary an amount of fuel injected into the combustion chamber during an engine start based on a speed response of the engine during a previous engine run-up from rest and a change in an amount of fuel stored in the fuel storage tank before the engine start.

    摘要翻译: 作为一个示例,提供了一种用于控制提供给内燃机的燃烧室的空气和燃料的相对量的方法。 该方法包括基于在先前发动机起动期间识别的燃料的挥发性来调节在发动机起动期间提供给燃烧室的空气和燃料的相对量。 作为另一示例,提供了一种车辆发动机系统,包括:包括至少一个燃烧室的内燃机; 燃料喷射器,被配置为向所述燃烧室提供燃料; 与燃料喷射器可操作地联接的燃料系统,包括燃料储存罐; 控制系统,被配置为基于在先前的发动机起停后的发动机的速度响应和存储在燃料储存箱中的燃料的量的变化来改变在发动机起动期间喷射到燃烧室中的燃料的量 在发动机起动前。

    System and method for reducing vehicle emissions
    6.
    发明授权
    System and method for reducing vehicle emissions 有权
    减少车辆排放的系统和方法

    公开(公告)号:US06360531B1

    公开(公告)日:2002-03-26

    申请号:US09649928

    申请日:2000-08-29

    IPC分类号: F01N300

    摘要: A method and system 10 for reducing cold-start emissions of an automotive vehicle 12 having an internal combustion engine 26. System 10 includes a main controller or control system 14, a variable valve timing system 16, an ignition system 18, a fuel metering system 20, and vehicle operating condition sensors 22. Controller 14 detects cold-start conditions based on signals received from sensors 22, and in response to such a detection, controller 14 generates command signals to said variable valve timing system 16, to said ignition system 18, and to said fuel metering system 20, effective to respectively alter valve timing, spark timing, and said air/fuel delivery of engine 26 in a manner which synergistically increases air/fuel enleanment limits, improves combustion characteristics, and increases exhaust gas temperature, thereby reducing cold-start emissions.

    摘要翻译: 一种用于减少具有内燃机26的机动车辆12的冷启动排放的方法和系统10.系统10包括主控制器或控制系统14,可变气门正时系统16,点火系统18,燃料计量系统 控制器14基于从传感器22接收到的信号来检测冷启动条件,并且响应于这种检测,控制器14向所述可变气门正时系统16产生指令信号到所述点火系统18 以及所述燃料计量系统20,其有效地以协同地增加空气/燃料消耗限度,改善燃烧特性和增加排气温度的方式分别改变发动机26的气门正时,火花正时和所述空气/燃料输送, 从而减少冷启动排放。