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    Tank-venting apparatus as well as a method and an arrangement for checking the same
    6.
    发明授权
    Tank-venting apparatus as well as a method and an arrangement for checking the same 失效
    作为检查方法和装置的油罐装置

    公开(公告)号：US5205263A

    公开(公告)日：1993-04-27

    申请号：US865923

    申请日：1992-04-09

    申请人： Andreas Blumenstock ,  Helmut Denz ,  Werner Mezger ,  Ernst Wild

    发明人： Andreas Blumenstock ,  Helmut Denz ,  Werner Mezger ,  Ernst Wild

    IPC分类号： G01M3/26 ,  B60K15/035 ,  F02M25/08 ,  G01M15/04

    CPC分类号： F02M25/0809 ,  B60K15/03504

    摘要： The invention is directed to a method of checking a tank-venting apparatus for a motor vehicle equipped with a fuel tank and an internal combustion engine having an intake pipe. The apparatus includes an adsorption filter having a venting end and an intake end, a supply line connecting the intake end to the tank and a connecting line interconnecting the intake pipe of the engine and the intake end of the adsorption filter. A tank-venting valve is mounted in the connecting line between the intake pipe and the intake end of the adsorption filter and a drive unit for actuating the tank-venting valve. The method includes the steps of: changing the open state of the tank-venting valve when a pregiven operating state range of the engine is present; detecting the difference pressure between the pressure at the intake end of the adsorption filter and the ambient pressure; checking if the difference pressure or the end value of the difference pressure change lies in a predetermined range after the open state of the tank-venting valve is changed; and, issuing a fault announcement if neither the difference pressure, the time constant of the difference pressure change nor the end value of the difference pressure change lies in said predetermined range. The invention utilizes the realization that the difference pressure is based on the gas flow into and out of the adsorption filter. The difference pressure drops when the outflow is clogged or when there is a leak. On the other hand, the difference pressure increases when the inflow is clogged. In this way, the operability of the tank-venting apparatus can be checked in a simple manner.

    摘要翻译： 本发明涉及一种检查装备有燃料箱的机动车辆的排气装置和具有进气管的内燃机的方法。 该装置包括具有通气端和进气端的吸附过滤器，将进气端连接到油箱的供给管线和将发动机的进气管与吸附过滤器的进气端相连的连接管线。 排气阀安装在进气管和吸附过滤器的进气端之间的连接管路中，以及用于致动排气阀的驱动单元。 该方法包括以下步骤：当存在发动机的预定运行状态范围时改变通气阀的打开状态; 检测吸附过滤器吸入端的压力与环境压力之间的差压; 检查在压力变化的打开状态发生变化之后，差压变化的差压或者结束值是否在规定的范围内， 以及如果差压，差压变化的时间常数和差压变化的结束值都不在所述预定范围内，则发出故障通知。 本发明利用差压是基于进入和离开吸附过滤器的气体流量的认识。 当流出物堵塞或泄漏时，差压力下降。 另一方面，当流入物堵塞时，差压增加。 以这种方式，可以以简单的方式检查罐排放装置的可操作性。

    Method and device for operating an internal combustion engine
    8.
    发明授权
    Method and device for operating an internal combustion engine 有权
    用于操作内燃机的方法和装置

    公开(公告)号：US07886712B2

    公开(公告)日：2011-02-15

    申请号：US12304910

    申请日：2008-02-08

    申请人： Dirk Hartmann ,  Georg Mallebrein ,  Werner Mezger ,  Andreas Roth ,  Henri Barbier ,  Nikolas Poertner ,  Juergen Rappold ,  Ingo Fecht

    发明人： Dirk Hartmann ,  Georg Mallebrein ,  Werner Mezger ,  Andreas Roth ,  Henri Barbier ,  Nikolas Poertner ,  Juergen Rappold ,  Ingo Fecht

    IPC分类号： F02B5/00

    CPC分类号： F02D41/005 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/1498 ,  F02D2200/1015 ,  F02D2250/21 ,  F02P5/045 ,  Y02T10/47

    摘要： A method and a device for operating an internal combustion engine make it possible to shift the combustion limit. In this context, a predefined output variable of the internal combustion engine such as the torque, for example, is realized in at least one operating state of the internal combustion engine by at least a retardation of an ignition angle. It is checked whether, due to the retardation of the ignition angle, a variable like, for example, a misfiring, characteristic for the combustibility of the air/fuel mixture in a combustion chamber of the internal combustion engine, exceeds a predefined limiting value in terms of a deterioration of the combustibility, and in this case, at least one actuator of the internal combustion engine, different from an actuator for setting the ignition angle, such as the exhaust-gas recirculation valve or EGR valve, for instance, is controlled along the lines of improving the combustibility of the air/fuel mixture.

    摘要翻译： 用于操作内燃机的方法和装置使得可以改变燃烧极限。 在这种情况下，内燃机的预定输出变量例如扭矩例如通过至少一个点火角的延迟在内燃机的至少一个操作状态下实现。 检查由于点火角度的延迟，如内燃机的燃烧室中的空气/燃料混合物的可燃性的特征，例如失火的变化是否超过预定的限制值 可燃性恶化的条件，并且在这种情况下，与例如排气再循环阀或EGR阀等不同于用于设定点火角的致动器的内燃机的至少一个致动器被控制 沿着提高空气/燃料混合物的可燃性的方式。