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    Tank-venting apparatus as well as a method and an arrangement for checking the same
    3.
    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 system for a fuel tank ventilation
    8.
    发明授权
    Method and system for a fuel tank ventilation 失效
    燃油箱通风方法和系统

    公开(公告)号：US5533479A

    公开(公告)日：1996-07-09

    申请号：US507261

    申请日：1995-08-18

    申请人： Ernst Wild ,  Werner Mezger

    发明人： Ernst Wild ,  Werner Mezger

    IPC分类号： F02M25/08 ,  F02M33/02

    CPC分类号： F02M25/0836 ,  F02M25/089

    摘要： In a method and a system for the ventilation of a fuel tank of a motor vehicle having an internal-combustion engine which has a suction pipe with a bypass containing, in particular, an idling adjuster, the fuel tank being capable of being ventilated into the open by way of a ventilation conduit having an adsorption filter and having a first valve located between the latter and a ventilation orifice, and the adsorption filter being capable of being scavenged with scavenging air which is supplied to the suction pipe by way of a scavenging-air conduit containing a second valve, to avoid disturbances of the operating conditions of the internal-combustion engine the scavenging air for the adsorption filter is branched off from the airstream flowing by way of the bypass.

    摘要翻译： PCT No.PCT / DE94 / 01531 Sec。 371日期：1995年8月18日 102（e）日期1995年8月18日PCT 1994年12月20日PCT PCT。 公开号WO95 / 17593 日期：1995年6月29日。在具有内燃机的机动车辆的燃料箱的通风方法和系统中，所述内燃机具有具有包含特别是怠速调节器的旁路的吸入管，所述燃料箱 能够通过具有吸附过滤器的通风管道通风，并且具有位于其之间的第一阀和通风孔，并且吸附过滤器能够被清除空气清扫，所述清除空气被供给到吸力 通过包含第二阀的扫气管道，为了避免内燃机的运行状况的干扰，用于吸附过滤器的清扫空气从通过旁路流动的气流分支出来。