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    • 86. 发明授权
    • Stereo lambda control
    • 立体声控制
    • US5267548A
    • 1993-12-07
    • US646607
    • 1991-02-04
    • Gunter RosenzopfUlrich SteinbrennerErnst WildGerhard Schneider
    • Gunter RosenzopfUlrich SteinbrennerErnst WildGerhard Schneider
    • F02D41/00F02D41/02F02D41/14F02M25/08
    • F02D41/1443F02D41/0042
    • In the method for the adapted precontrol and feedback control of the air/fuel mixtures to be supplied to the two fuel-metering devices of an internal combustion engine, which has two separate exhaust-gas channels with a lambda probe and a catalytic converter in each channel, a common value of the precontrol manipulated variable and a common lambda desired value are determined for both fuel-metering devices. On the other hand, values of a control manipulated variable are determined separately for each fuel-metering device and values of precontrol adaptation variables, which are dependent upon the values of the control manipulated value, are determined and are superposed separately one after the other on the common precontrol value. This method makes it possible to manage with a single device for both cylinder banks which are to be operated in a stereo lambda control.
    • PCT No.PCT / DE89 / 00486 Sec。 371日期1991年2月4日 102(e)1991年2月4日PCT日期1989年7月22日PCT。在用于对内燃机的两个燃料计量装置供应的空气/燃料混合物进行适应的预控制和反馈控制的方法中, 其在每个通道中具有两个具有λ探针和催化转化器的独立废气通道,对于两个燃料计量装置确定预控制操纵变量和公共λ期望值的公共值。 另一方面,对于每个燃料计量装置分别确定控制操作变量的值,并且确定依赖于控制操作值的预控制自适应变量的值,并且逐个地依次重叠 共同的预控价值。 这种方法使得可以使用单个设备来管理要在立体声喇叭控制中操作的两个气缸组。
    • 87. 发明授权
    • Tank-venting arrangement and method for checking the tightness thereof
    • 油罐安装方法及其检验方法
    • US5220896A
    • 1993-06-22
    • US811526
    • 1991-12-20
    • Andreas BlumenstockHelmut DenzUlrich SteinbrennerErnst Wild
    • Andreas BlumenstockHelmut DenzUlrich SteinbrennerErnst Wild
    • F02B77/08B60K15/035F02M25/08F02M37/00
    • B60K15/03504
    • A tank-venting arrangement includes: a tank; an adsorption filter connected to the tank; a tank-venting valve interconnecting the adsorption filter and the intake pipe of the engine; a control unit for driving the tank-venting valve so that it closes or opens; a pressure difference sensor for measuring the pressure difference between the pressure in the tank and the ambient pressure; and, an integrating unit for determining the time integral of the pressure difference. With this tank-venting arrangement, a simple and reliable determination can be made as to when so much fuel vapor should have been adsorbed in the active charcoal filter so that when the tank-venting valve is opened thereafter, a lean correction by means of a lambda controller can be required. If this lean correction is not made, this is an indication that the fuel flowing from the tank has not reached the tank-venting valve so that the tank-venting arrangement leaks or is obstructed.
    • 排气装置包括:罐; 连接到罐的吸附过滤器; 将吸附过滤器与发动机的进气管相连接的排气阀; 控制单元,用于驱动所述排气阀使其关闭或打开; 压力差传感器,用于测量罐中的压力与环境压力之间的压力差; 以及用于确定压力差的时间积分的积分单元。 通过这种排气装置,可以简单可靠地确定当活性炭过滤器吸附多少燃料蒸汽时,当其后打开排气阀时,借助于 可以使用lambda控制器。 如果没有进行精益校正,这表明从罐中流出的燃料没有到达排放阀,以致于排气装置泄漏或被阻塞。
    • 88. 发明授权
    • Tank-venting arrangement and method of operating the same
    • 油罐布置及其运行方法
    • US5197442A
    • 1993-03-30
    • US811294
    • 1991-12-20
    • Andreas BlumenstockHelmut DenzUlrich SteinbrennerErnst Wild
    • Andreas BlumenstockHelmut DenzUlrich SteinbrennerErnst Wild
    • B60K15/077B60K15/035F02M25/08F02M37/00
    • B60K15/03504F02M25/0818
    • A tank-venting arrangement includes: a tank having a tank closure; an electrically drivable check valve; an adsorption filter; connecting lines for interconnecting the above components; a difference pressure sensor which measures the pressure difference between the pressure in the tank and the ambient pressure and supplies a pressure difference signal; a comparator which, at least for a running engine, compares the pressure difference signal to upper and lower threshold values and supplies an opening signal to the check valve to open the latter when the pressure difference signal is greater than the upper threshold value and a closure signal for closing the check valve when the pressure difference signal drops below the lower threshold value; and, a detector unit which supplies an opening signal to the check valve for opening the check valve when the sensor determines a possible opening of the tank and a closure signal for closing the check valve when the sensor determines a possible closure of the tank. With the aid of the check valve and the difference pressure sensor which measures the pressure difference between the pressure in the tank and the ambient pressure, the tank-venting arrangement can be so operated that at least for a running engine, a desired maximum overpressure in the tank can be obtained relative to the ambient pressure independently of the extent of the underpressure in that part of the arrangement forward of the check valve.
    • 排气装置包括:具有罐盖的罐; 电驱动止回阀; 吸附过滤器; 用于连接上述部件的连接线; 差压传感器,其测量罐中的压力与环境压力之间的压力差,并提供压力差信号; 比较器,其至少对于运行的发动机,将压力差信号与上限和下限阈值进行比较,并且当压力差信号大于上限阈值时,向止回阀提供打开信号以打开后者, 当压力差信号下降到低于阈值时关闭止回阀的信号; 以及检测器单元,当传感器确定罐的可能打开时,检测器单元向打开止回阀的打开信号提供打开信号,以及当传感器确定罐可能关闭时关闭止回阀的关闭信号。 借助于止回阀和差压传感器,该差压传感器测量罐中的压力与环境压力之间的压力差,罐排气装置可以如此操作,使得至少对于运行的发动机来说,期望的最大超压在 可以独立于止回阀向前的布置部分的负压程度,相对于环境压力获得罐。