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    • 95. 发明授权
    • Method and arrangement for determining the storage capacity of a
catalytic converter
    • 用于确定催化转化器的储存容量的方法和装置
    • US5335538A
    • 1994-08-09
    • US937411
    • 1992-08-31
    • Frank BlischkeErich SchneiderEberhard Schnaibel
    • Frank BlischkeErich SchneiderEberhard Schnaibel
    • F01N3/20F01N11/00F02B77/08F02D35/00F02D45/00G01M15/00
    • F01N11/007F01N2550/02F01N2900/0422Y02T10/47
    • The invention is directed to a method for determining the storage capacity of a catalytic converter of an internal combustion engine with the aid of a first signal from an oxygen-indicating first probe mounted forward of the catalytic converter and a second signal from an oxygen-indicating second probe mounted rearward of the catalytic converter. The first and second signals show the change from rich to lean and vice versa and the method includes the steps of: determining the storage capacity as a quantity proportional to the time-dependent integral of an integration variable; starting the integration at a time point at which said first signal changes from rich to lean or vice versa; and, ending the integration after a time interval. The method does not need a special test operation of the engine to determine the storage capacity of the catalytic converter. Instead, the method can be carried out in any steady-state operating condition for which the probe rearward of the catalytic converter regularly indicates jumps from rich to lean and vice versa. The invention is also directed to an arrangement for carrying out the invention.
    • 本发明涉及一种用于借助于安装在催化转化器前方的氧指示第一探针的第一信号和来自氧指示的第二信号来确定内燃机的催化转化器的储存容量的方法 第二个探头安装在催化转化器的后面。 第一和第二信号显示从丰富到精益的变化,反之亦然,并且该方法包括以下步骤:将存储容量确定为与积分变量的时间依赖积分成比例的量; 在所述第一信号从丰富变为稀薄的时间点开始整合,反之亦然; 并在一段时间间隔结束整合。 该方法不需要发动机的特殊测试操作来确定催化转化器的储存容量。 相反,该方法可以在任何稳态操作条件下进行,其中催化转化器后面的探针定期地指示从富反向跳跃到反之亦然。 本发明还涉及一种用于实施本发明的装置。
    • 96. 发明授权
    • Method and arrangement for determining the performance loss of a
catalyzer
    • 用于确定催化剂性能损失的方法和装置
    • US5267472A
    • 1993-12-07
    • US870263
    • 1992-04-17
    • Erich SchneiderEberhard Schnaibel
    • Erich SchneiderEberhard Schnaibel
    • F01N3/00F01N3/20F01N11/00F02B77/08F02D45/00G01M15/04G01M15/00
    • F01N11/007F01N2550/02Y02T10/47
    • The invention relates to a method for determining the performance loss of a catalyzer receiving the exhaust gas of a lambda-controlled internal combustion engine and includes the steps of: measuring lambda values forward and rearward of the catalyzer to obtain forward and rearward lambda values, respectively; when a control oscillation of the forward lambda value makes a transition from rich to lean or from lean to rich, determining if the rearward lambda value makes a transition corresponding to the transition of the forward lambda value, and if this correspondence takes place, then carrying out the following additional steps: determining the gas mass flow flowing through the catalyzer; computing the time integral of the product of the gas mass flow and the forward lambda value; computing the time integral of the product of the gas mass flow and the rearward lambda value; and, as a measure of the performance loss of the catalyzer, utilizing either the difference between the integrals or the quotient of the integrals or the quotient of the difference and one of the integrals. The method of the invention affords the advantage that determinations are only undertaken when it is ensured that the catalyzer is entirely filled with oxygen or is completely emptied in advance of a measurement. This achieves well defined starting relationships. Furthermore, the advantage is provided that with the evaluations, gas-mass flows are considered which permits the storage capacity of the catalyzer for oxygen to be directly determined. This oxygen storage capacity is the variable decisive in the practice for determining the state of deterioration of the catalyzer.
    • 本发明涉及一种用于确定接收λ控制的内燃机的废气的催化剂的性能损失的方法,包括以下步骤:测量催化剂前后的λ值,以分别获得前向和后向的λ值 ; 当前向λ值的控制振荡使得从丰富到瘦或从瘦到过渡时,确定向后的λ值是否对应于前向λ值的转变而产生转变,并且如果发生该对应,则携带 进行以下附加步骤:确定流过催化器的气体质量流量; 计算气体质量流量与正向λ值的乘积的时间积分; 计算气体质量流量和后向λ值的乘积的时间积分; 并且作为催化剂的性能损失的量度,利用积分或积分的商或差的商与积分之一之间的差。 本发明的方法提供的优点是仅当确保催化剂完全充满氧气或在测量之前完全排空时才进行测定。 这实现了明确定义的起始关系。 此外,提供的优点在于,通过评估,考虑气体质量流量,其允许直接确定催化剂对于氧气的储存能力。 在确定催化剂劣化状态的实践中,这种储氧能力是决定性的。
    • 97. 发明授权
    • Open-loop/closed-loop control system for an internal combustion engine
    • 内燃机的开环/闭环控制系统
    • US5040513A
    • 1991-08-20
    • US499301
    • 1990-05-14
    • Eberhard SchnaibelErich Schneider
    • Eberhard SchnaibelErich Schneider
    • F02D41/14F02D41/24F02D45/00
    • F02D41/2496F02D41/1402
    • An open-loop/closed-loop control system for adjusting the air/fuel mixture of an internal combustion engine 12 exhibits an oxygen probe (.lambda.-probe) 14 which is exposed to the exhaust gas of the internal combustion engine 12 and which emits an output signal which represents a measure of the air ratio .lambda.. The control system also has a basic memory 10 for storing fuel-metering times which are used for precontrolling the internal combustion engine 12 to a predetermined air ratio .lambda., a desired-value memory 18 for storing desired values of the air ratio and a closed-loop control device 20 which, in depedence on an output signal of the .lambda.-probe 14 measured and on an associated desired value read out of the desired-value memory 18, corrects the particular fuel-metering time read out of the basic memory 10 and the desired-value memory 18 stores the inverse value of the air ratio .lambda.. The fuel-metering time read out of the basic memory 10 is multiplicatively combined with the corresponding inverse value of the air ratio .lambda. read out of the desired-value memory 18. A conversion device 16 converts, with the aid of an at least approximately known probe-characteristic relationship between the output signal of the .lambda.-probe 14 and the air ratio .lambda., the output signal into a corresponding inverse value of the air vario .lambda.. A fast and accurate control is achieved by means of a simple linear closed-loop control device by taking into consideration the linear relationship between the inverse value of the air ratio .lambda. and the fuel quantity (fuel-metering time).
    • PCT No.PCT / DE88 / 00679 Sec。 371日期1990年5月14日 102(e)日期1990年5月14日PCT提交1988年11月3日PCT公布。 出版物WO89 / 05397 日本1989年6月15日。用于调节内燃机12的空气/燃料混合物的开环/闭环控制系统显示出暴露于内部燃烧器12的废气的氧探针(λ-探针)14 内燃发动机12,并且其发出表示空气比λ的量度的输出信号。 控制系统还具有用于存储用于将内燃机12预控制到预定空气比λ的燃料计量时间的基本存储器10,用于存储空气比的期望值的期望值存储器18, 环路控制装置20根据所测量的λ-探针14的输出信号和从期望值存储器18读出的相关联的期望值,校正从基本存储器10读出的特定燃料计量时间, 期望值存储器18存储空气比λ的反相值。 从基本存储器10中读出的燃料计量时间与从期望值存储器18读出的空气比λ的对应的反相值乘法组合。转换装置16借助于至少近似已知的 λ-探针14的输出信号与空气比λ之间的探针特性关系,将输出信号转换成空气变量λ的对应的反相值。 通过考虑空气比λ的反值与燃料量(燃料计量时间)之间的线性关系,通过简单的线性闭环控制装置实现快速和精确的控制。
    • 100. 发明授权
    • Automotive trailer connection recognition system
    • 汽车拖车连接识别系统
    • US4430637A
    • 1984-02-07
    • US296111
    • 1981-08-25
    • Heinz-Jurgen Koch-DuckerErich JungingerEberhard Schnaibel
    • Heinz-Jurgen Koch-DuckerErich JungingerEberhard Schnaibel
    • B60Q11/00B60Q1/00
    • B60Q11/00B60Q11/007
    • To provide an indication of the presence of a trailer connected to a vehicle, operating as a tractor, without any additional terminal or contact elements on a plug-socket connector between the electrical system of the tractor and the trailer connected thereto, a logic gate (11), preferably a NAND-element, is connected to the output line of the direction flasher circuit, or other suitable connecting line, to a low-resistance load on the trailer, for example the brake light (19a), position lights or the like, the resistance circuit element including a connection from the positive power supply through a resistor (12) having a value which is high with respect to that of the lamps on the trailer (19, 19a) so that, with the trailer disconnected, an effectively 1-signal will be applied to the logic circuit but, upon connection of a low-resistance lamp, that is, upon connection of a trailer socket, the signal at the logic gate will drop to a O-signal although the current through the lamp is insufficient to cause lighting thereof. Energization of the respective flasher lamps, which is only short-time, may cause flashing of the indicator which can be suppressed, for example, by inclusion of an R/C circuit in the control system for the indicator lamp.
    • 为了提供连接到作为拖拉机的车辆的拖车的存在的指示,在拖拉机的电气系统和与其连接的拖车之间的插头连接器上没有任何附加的端子或接触元件,逻辑门( 11),优选为NAND元件,连接到方向闪光器电路或其他合适的连接线的输出线路到拖车上的低电阻负载,例如制动灯(19a),位置灯或 电阻电路元件包括从正电源通过电阻器(12)的连接,该电阻器具有相对于拖车(19,19a)上的灯的值高的值,使得在拖车断开的情况下, 有效的1信号将被施加到逻辑电路,但是在连接低电阻灯时,即在连接拖车插座时,逻辑门上的信号将下降到O信号,尽管电流通过 灯是在 足以引起照明。 只有短时间的各个闪光灯的通电可能导致指示器的闪烁,例如通过在用于指示灯的控制系统中包含R / C电路可以抑制该指示器的闪烁。