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    • 31. 发明授权
    • Method and arrangement for obtaining an evaluation value for the
performance loss of a catalytic converter
    • 获得催化转化器性能损失评估值的方法和装置
    • US5255515A
    • 1993-10-26
    • US981844
    • 1992-11-25
    • Andreas BlumenstockErnst WildHelmut DenzKlaus Ries-Muller
    • Andreas BlumenstockErnst WildHelmut DenzKlaus Ries-Muller
    • F01N3/20F01N11/00F02B77/08F02D35/00G01M15/04G01N33/00F07N3/20
    • F01N11/007F01N2550/02Y02T10/47
    • The invention is directed to a method for obtaining a value for evaluating the performance loss of a catalytic converter with the aid of a forward signal of a forward gas probe mounted forward of the catalytic converter and a rearward signal of a rearward gas probe mounted rearward of the catalytic converter, the catalytic converter being connected to an internal combustion engine. The method includes the steps of: carrying out the method during the steady-state operation of the engine; multiplying the forward signal and the rearward signal with each other to form a plurality of products; averaging the products over a plurality of oscillations of the forward signal to obtain a mean value; and, utilizing the mean value as a value for evaluating the performance loss of the catalytic converter. This correlation method can be varied in different ways and especially in that the forward-probe signal is correlated without or with phase shift with the rearward-probe signal. A cross-correlation factor or the real or imaginary component of an orthogonal correlation or other correlation values are obtained in dependence upon the nature of the correlation. These correlation values are used for evaluating the performance loss of the catalytic converter. The evaluation of the performance loss of the catalytic converter with the aid of these correlation values is very significantly more reliable than the evaluation with the aid of amplitudes or amplitude mean values of the probe signals.
    • 本发明涉及一种用于通过安装在催化转化器前方的正向气体探针的前向信号和后方气体探针的向后信号获得用于评估催化转化器的性能损失的值的方法, 催化转化器,催化转化器连接到内燃机。 该方法包括以下步骤:在发动机的稳态运行期间执行该方法; 将前向信号和后向信号彼此相乘以形成多个乘积; 在正向信号的多个振荡中对产品进行平均以获得平均值; 并利用平均值作为评价催化转化器的性能损失的值。 该相关方法可以以不同的方式变化,特别是前向探针信号与后向探测信号无相关或相移相关。 取决于相关性质,获得正交相关或其他相关值的互相关因子或实分量或虚分量。 这些相关值用于评估催化转化器的性能损失。 借助于这些相关值对催化转化器的性能损失的评估与借助于探测信号的幅度或振幅平均值的评估相比非常显着更可靠。
    • 32. 发明授权
    • Tank-venting apparatus as well as a method and an arrangement for
checking the operability thereof
    • 作为检查其可操作性的方法和装置的油罐装置
    • US5243944A
    • 1993-09-14
    • US905728
    • 1992-06-29
    • Andreas Blumenstock
    • Andreas Blumenstock
    • B60K15/077F02B3/06F02M25/08F02M37/00
    • F02M25/0809F02B3/06
    • The invention is directed to a method of checking the operability of a tank-venting apparatus for a motor vehicle having a fuel tank and an internal combustion engine including an air intake pipe. The method includes the steps of: measuring the temperature of the adsorption material with a first temperature sensor before the first regeneration of the adsorption material after a tanking operation; measuring the temperature of the adsorption material at a pregiven time point after the start of the first regeneration; forming the material temperature difference between the first and second measured values (.theta.1.sub.-- V-.theta.1.sub.-- N); measuring the temperature of the venting air close to the adsorption material with a second temperature sensor in advance of the first regeneration; measuring the temperature of the venting air at a pregiven time point after the start of the first regeneration; forming the venting-air temperature difference between the second and first measured values (.theta.2.sub.-- N-.theta.2.sub.-- N); subtracting the venting-air temperature difference from the material temperature difference to obtain a regeneration temperature difference; comparing the regeneration temperature difference to a threshold value; and, evaluating the apparatus as operational when the regeneration temperature difference exceeds the threshold value and, if not, then evaluating the apparatus as being inoperable. This method affords the advantage that temperature effects no longer constitute a disturbance when checking temperature changes of the adsorption material by means of regeneration operations with the temperature effects being caused by the venting air.
    • 本发明涉及一种检查具有燃料箱的机动车辆的排气装置和包括进气管的内燃机的可操作性的方法。 该方法包括以下步骤:在油罐操作之后,在第一次再生吸附材料之前用第一温度传感器测量吸附材料的温度; 在第一再生开始之后的预定时间点测量吸附材料的温度; 形成第一和第二测量值之间的材料温度差(θ1-V-1-N); 在第一再生之前用第二温度传感器测量靠近吸附材料的通风空气的温度; 在第一再生开始之后的预定时间点测量排气的温度; 形成第二和第一测量值(θ2 -n-θ-2-N)之间的排气温度差; 从所述材料温度差减去所述排气温度差以获得再生温度差; 将再生温度差与阈值进行比较; 以及当所述再生温度差超过所述阈值时将所述装置评估为可操作的,并且如果不是,则将所述装置评估为不可操作。 该方法提供的优点是,当通过由通风引起的温度影响的再生操作来检查吸附材料的温度变化时,温度效应不再构成干扰。
    • 40. 发明授权
    • Method for detecting the fill level quantity of a tank system
    • 一种用于检测油罐系统的油量的方法
    • US6065335A
    • 2000-05-23
    • US977606
    • 1997-11-25
    • Helmut DenzAndreas BlumenstockGeorg Mallebrein
    • Helmut DenzAndreas BlumenstockGeorg Mallebrein
    • B60K15/077F02M37/00G01F17/00G01F23/14G01M3/26G01F23/00
    • G01F17/00G01F22/02G01F23/14B60K2015/03217
    • The invention is directed to a method for detecting a fill level of a tank system utilizing a pressure source, a bridge divider arrangement and a pressure measuring device. The pressure source is adapted to generate a change of pressure in the tank system. The pressure divider arrangement has a reference measuring unit which can be charged with pressure by the pressure source. The reference measuring unit further includes at least one flow resistor of a predetermined size in at least one reference flow branch. For measuring the tightness, the pressure measuring device simultaneously detects the difference of the pressure in the tank system and of the pressure in the reference measuring unit. In the method, the time-dependent trace of the difference pressure during at least one of a pressure build-up operation and a pressure decay operation is continuously detected. A conclusion is then drawn as to the fill level from the time-dependent trace.
    • 本发明涉及一种用于检测利用压力源,桥分隔器装置和压力测量装置的罐系统的填充水平的方法。 压力源适于产生罐系统中的压力变化。 压力分配器具有参考测量单元,该测量单元可由压力源对其施加压力。 参考测量单元还包括至少一个在至少一个参考流分支中的预定大小的流量电阻器。 为了测量紧密度,压力测量装置同时检测油箱系统中的压力和参考测量单元中压力的差异。 在该方法中,连续地检测在压力建立操作和压力衰减操作中的至少一个期间的差压的时间依赖性痕迹。 然后从时间依赖的跟踪中得出填充水平的结论。