Lambda control method
    63.
    发明授权
    Lambda control method 失效
    Lambda控制方法

    公开(公告)号:US5787867A

    公开(公告)日:1998-08-04

    申请号:US816377

    申请日:1997-03-13

    IPC分类号: F02D41/14 G05B13/02

    摘要: The invention is directed to a method for controlling the composition of the air/fuel mixture for an internal combustion engine. In the method, the mean value of the control oscillation is influenced via a change of the delay times tv with which a sign reversal of the actuating variable change is delayed. The dead time of the control is determined from the time-dependent performance of the control actuating variable and is considered for the change of the delay times tv.

    摘要翻译: 本发明涉及一种用于控制用于内燃机的空气/燃料混合物的组成的方法。 在该方法中,控制振荡的平均值通过延迟时间tv的变化而受到影响,延迟时间tv与致动变量改变的符号反转延迟。 控制的死区时间根据控制执行变量的时间依赖性能确定,并考虑延迟时间tv的变化。

    Method and device for assessing the operating capacity of a lambda
control
    65.
    发明授权
    Method and device for assessing the operating capacity of a lambda control 失效
    用于评估lambda控件的操作容量的方法和设备

    公开(公告)号:US5404861A

    公开(公告)日:1995-04-11

    申请号:US107662

    申请日:1993-08-12

    申请人: Ernst Wild

    发明人: Ernst Wild

    IPC分类号: F02D41/14 F02D41/22

    CPC分类号: F02D41/1495 F02D41/2454

    摘要: In a method for assessing the operating capacity of a lambda control, which outputs regulated values FR which are to fluctuate about a desired regulated value FR.sub.- DES, which lambda control is assisted by an adaptation outputting adaptation values, the current value of a decision quantity, which indicates the averaged absolute value of deviation of the regulated value from the desired regulated value, is calculated continuously, then the current value is compared with a decision-quantity threshold value SW.sub.- EW, and the faulty signal is output when the current value exceeds the decision-quantity threshold value. It is therefore also possible to recognize those fails which occur only in part ranges of the total range in which an internal-combustion engine, in which the fuel supply is set by means of the lambda control, can be operated.

    摘要翻译: PCT No.PCT / DE93 / 00017 Sec。 371日期:1993年8月12日 102(e)日期1993年8月12日PCT提交1993年1月14日PCT公布。 公开号WO93 / 16277 日期为1993年8月19日。在一种用于评估λ控制的操作容量的方法中,该控制器输出关于期望的调节值FR-DES波动的调节值FR,该λ控制由适配输出适应值辅助, 连续地计算指示调节值与期望调节值的偏差的平均绝对值的判定量的当前值,然后将电流值与判定量阈值SW-EW进行比较, 当电流值超过判定量阈值时,输出信号。 因此,也可以认识到只能在通过λ控制设定燃料供给的内燃机的总范围的一部分范围内发生的故障。

    Stereo lambda control
    66.
    发明授权
    Stereo lambda control 失效
    立体声控制

    公开(公告)号:US5267548A

    公开(公告)日:1993-12-07

    申请号:US646607

    申请日:1991-02-04

    CPC分类号: F02D41/1443 F02D41/0042

    摘要: 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.

    摘要翻译: 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。

    Tank-venting arrangement and method for checking the tightness thereof
    67.
    发明授权
    Tank-venting arrangement and method for checking the tightness thereof 失效
    油罐安装方法及其检验方法

    公开(公告)号:US5220896A

    公开(公告)日:1993-06-22

    申请号:US811526

    申请日:1991-12-20

    CPC分类号: B60K15/03504

    摘要: 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.

    摘要翻译: 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。

    Tank-venting arrangement and method of operating the same
    68.
    发明授权
    Tank-venting arrangement and method of operating the same 失效
    油罐布置及其运行方法

    公开(公告)号:US5197442A

    公开(公告)日:1993-03-30

    申请号:US811294

    申请日:1991-12-20

    CPC分类号: B60K15/03504 F02M25/0818

    摘要: 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.

    摘要翻译: 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。

    Process and device for adjusting operating parameters of an internal
combustion engine
    69.
    发明授权
    Process and device for adjusting operating parameters of an internal combustion engine 失效
    用于调节内燃机运行参数的过程和装置

    公开(公告)号:US5162999A

    公开(公告)日:1992-11-10

    申请号:US466293

    申请日:1990-04-04

    IPC分类号: F02D45/00 F02D41/26

    CPC分类号: F02D41/263

    摘要: The invention relates to a method and a device for adjusting operating parameters of an internal combustion engine. Time-independent programs are executed in a low-priority background program and programs dependent on the crank angle are executed in a high-priority synchroprogram. Time-dependent programs are divided into different groups, specifically into at least one group of time-dependent programs of shortest interval and at least one composite group which contains the group of time-dependent programs of shortest interval. When a predetermined grid interval has elapsed, a particular group of time-dependent programs, that is either a group of time-dependent programs of shortest interval or a composite group, is run through.

    摘要翻译: PCT No.PCT / DE89 / 00485 Sec。 371日期1990年04月4日 102(e)日期1990年4月4日PCT提交1989年7月21日PCT公布。 第WO90 / 01629号公报 日期:1990年02月22日本发明涉及一种用于调节内燃机的运行参数的方法和装置。 在低优先级后台程序中执行时间无关的程序,并且依赖于曲柄角的程序在高优先级同步程序中执行。 时间依赖程序被划分成不同的组,特别是至少一组最短间隔的时间依赖程序组和至少一个组合组,其中包含最短间隔的时间依赖程序组。 当经过预定的网格间隔时,将运行特定的一组时间依赖程序,这些程序是一组最短间隔的时间相关程序或复合组。

    Method and apparatus for adapting the characteristic of an idling
adjuster
    70.
    发明授权
    Method and apparatus for adapting the characteristic of an idling adjuster 失效
    用于适应识别调节器特性的方法和装置

    公开(公告)号:US5094207A

    公开(公告)日:1992-03-10

    申请号:US555395

    申请日:1990-09-24

    摘要: An apparatus 14 for adapting the characteristic of an idling adjuster has a release means 15 which allows adaptation only when the sign of a speed control deviation .DELTA.n corresponds to the sign of an air-quantity control deviation .DELTA.Q.This guarantees that the adaptation cannot counteract the speed control either as a result of still insufficient adaptation or by shunt signals from the air-quantity meter 11.

    摘要翻译: PCT No.PCT / DE89 / 00738 Sec。 371 1990年9月24日第 102(e)1990年9月24日PCT PCT 1991年11月25日PCT公布。 出版物WO90 / 07052 日期为1982年6月28日。用于适应怠速调节器的特性的装置14具有释放装置15,释放装置15仅在速度控制偏差DELTA n的符号对应于空气量控制偏差DELTA Q的符号时才允许适应 这保证了由于仍然不足的适应性或来自空气量计11的分流信号,该适应不能抵消速度控制。