Apparatus and a method for controlling the ignition timing of a
cylinder-injection internal combustion engine
    2.
    发明授权
    Apparatus and a method for controlling the ignition timing of a cylinder-injection internal combustion engine 失效
    用于控制气缸喷射内燃机的点火正时的装置和方法

    公开(公告)号:US5909723A

    公开(公告)日:1999-06-08

    申请号:US966705

    申请日:1997-11-10

    IPC分类号: F02P5/15 F02P5/152

    摘要: An apparatus for controlling an ignition timing of a cylinder-injection gasoline engine includes an electronic control unit (ECU) for controlling the operation of an ignition coil. The ECU advances the ignition timing in accordance with the throttle opening in consideration of a delay in increase of the wall temperature of a combustion chamber when the acceleration of a vehicle is detected by the change of the throttle opening. In order to prevent knocking of the engine attributable to the increase of the wall temperature, the ECU gradually decreases an advance angle for the ignition timing to 0 with the passage of control time. When the engine is reaccelerated during the advance angle correction, the ECU newly sets an advance angle for the ignition timing and a control time, corresponding to the increase of the wall temperature.

    摘要翻译: 用于控制汽缸喷射汽油发动机的点火正时的装置包括用于控制点火线圈的操作的电子控制单元(ECU)。 考虑到当通过节气门开度的改变来检测车辆的加速度时,考虑到燃烧室的壁温的增加的延迟,ECU根据节气门开度来推进点火正时。 为了防止由于壁温升高引起的发动机爆震,ECU随着控制时间逐渐将点火正时的提前角减小到0。 当在提前角修正期间重新加速发动机时,ECU根据壁温升高新设定点火正时提前角和控制时间。

    Exhaust gas heating system for in-cylinder injection internal combustion
engine
    6.
    发明授权
    Exhaust gas heating system for in-cylinder injection internal combustion engine 失效
    缸内喷射内燃机排气加热系统

    公开(公告)号:US6041591A

    公开(公告)日:2000-03-28

    申请号:US887218

    申请日:1997-07-02

    摘要: An exhaust gas heating system for an in-cylinder injection internal combustion engine is disclosed. The system includes a fuel injection device for injecting fuel directly into a combustion chamber of the engine, a spark plug for subjecting fuel, which has been injected as primary fuel from the injection device, to spark ignition such that the primary fuel undergoes primary combustion, an exhaust gas purification device arranged in an exhaust passage of the engine, a purification device temperature computing unit for determining a temperature of the purification device by detecting or estimating the temperature of the purification device, and an additional fuel injection control unit for controlling the injection device when the purification device is found to require activation from the temperature determined by the computing unit, such that an injection of fuel as additional fuel is performed during a flame lasting duration that a flame of the primary combustion remains. The control unit includes an injection timing setting unit for setting an injection start time of the additional fuel on a basis of a parameter which affects the flame lasting duration.

    摘要翻译: 公开了一种用于缸内喷射内燃机的排气加热系统。 该系统包括用于将燃料直接喷射到发动机的燃烧室中的燃料喷射装置,用于使作为来自喷射装置的主要燃料喷射的燃料的火花塞点火,使得主燃料经历一次燃烧, 排气净化装置,其布置在发动机的排气通道中;净化装置温度计算单元,用于通过检测或估计净化装置的温度来确定净化装置的温度;以及附加燃料喷射控制单元,用于控制喷射 发现净化装置需要从由计算单元确定的温度进行激活的装置,使得作为附加燃料的燃料喷射在保持一次燃烧的火焰的持续持续时间期间执行。 控制单元包括喷射正时设定单元,用于根据影响火焰持续时间的参数来设定附加燃料的喷射开始时间。

    Exhaust-gas temperature raising system for an in-cylinder injection type
internal combustion engine
    8.
    发明授权
    Exhaust-gas temperature raising system for an in-cylinder injection type internal combustion engine 失效
    用于缸内喷射式内燃机的排气升温系统

    公开(公告)号:US5967113A

    公开(公告)日:1999-10-19

    申请号:US987051

    申请日:1997-12-09

    摘要: An exhaust-gas temperature raising system, installed in an in-cylinder injection type internal combustion engine adapted to spark-ignite fuel injected from a fuel injection valve directly into a combustion chamber, includes an electronic control unit which controls the fuel injection valve to inject the fuel, at a delayed fuel-injection timing in a compression stroke of the engine, in such an amount as to form an overrich air-fuel mixture locally around an ignition plug together with air in the combustion chamber, when the engine is in an operating condition in which an exhaust-gas temperature is required to rise. The electronic control unit controls an engine control parameter so that the fuel injected at the delayed fuel-injection timing and spark-ignited is insufficiently combusted around the ignition plug, and is then mixed with extra oxygen in the combustion chamber so as to be combusted while being affected by a gas flow in the combustion chamber, whereby the exhaust-gas temperature is effectively raised while suppressing the fuel consumption rate to a minimum.

    摘要翻译: 安装在缸内喷射型内燃机中的排气升温系统,其适于将从燃料喷射阀喷射的燃料直接燃烧到燃烧室中,包括控制燃料喷射阀喷射的电子控制单元 燃料在发动机的压缩冲程中以延迟的​​燃料喷射正时以这样的量形成,以便当发动机处于燃烧室内时,与燃烧室内的空气一起在火花塞周围局部地形成过多的空气 - 燃料混合物 需要排气温度升高的运行状态。 电子控制单元控制发动机控制参数,使得在延迟燃料喷射正时和火花点火时喷射的燃料在火花塞周围不充分燃烧,然后与燃烧室中的额外氧气混合以便燃烧,同时 受到燃烧室中的气体流动的影响,从而在将燃料消耗率抑制在最小的同时有效地提高废气温度。

    Exhaust purifying apparatus for an in-cylinder injection type internal combustion engine
    9.
    发明授权
    Exhaust purifying apparatus for an in-cylinder injection type internal combustion engine 有权
    用于缸内喷射式内燃机的排气净化装置

    公开(公告)号:US06173571B1

    公开(公告)日:2001-01-16

    申请号:US09180448

    申请日:1998-11-09

    IPC分类号: F01N300

    摘要: An exhaust purifying apparatus for an in-cylinder injection type internal combustion engine causes exhaust gas temperature to rise reliably, thereby desorbing reliably a sulfur component (SOx) adhered to an NOx catalyst and enhancing the durability of the NOx catalyst. For this reason, the exhaust purifying apparatus for an in-cylinder injection type internal combustion engine comprises an NOx catalyst (9A) for adhering NOx to itself in an excess oxygen concentration condition and desorbing NOx in an oxygen concentration reduction condition, and sulfur component desorption means (107) for desorbing a sulfur component from the NOx catalyst (9A). The sulfur component desorption means (107) injects additional fuel during an expansion stroke in addition to main injection and burns the additional fuel again so that exhaust gas temperature is raised to a predetermined temperature or beyond, whereby the sulfur component is desorbed.

    摘要翻译: 用于缸内喷射型内燃机的排气净化装置使废气温度可靠地上升,从而可靠地解吸附着在NOx催化剂上的硫成分(SOx),提高NOx催化剂的耐久性。 因此,用于缸内喷射型内燃机的排气净化装置包括:NOx催化剂(9A),用于在过氧浓度条件下将NOx附着到其自身并且在氧浓度降低条件下解吸NOx,以及硫成分解吸 用于从NOx催化剂(9A)中解吸硫成分的装置(107)。 除了主喷射之外,硫成分解吸装置(107)在膨胀冲程期间还喷射额外的燃料,并再次燃烧附加燃料,使得废气温度升高至预定温度或更高温度,从而使硫组分解吸。