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    • 2. 发明授权
    • Method for the control of the supplied air/fuel ratio of an internal combustion engine
    • 用于控制内燃机的供给空气/燃料比的方法
    • US08291692B2
    • 2012-10-23
    • US11197317
    • 2005-08-05
    • Bodo Odendall
    • Bodo Odendall
    • F01N3/00
    • F01N3/0864F01N3/0807F01N2430/06F02D41/0295F02D41/1441F02D41/1495F02D2200/0802Y02T10/20
    • In a method for the control of the supplied air/fuel ratio of an internal combustion engine (1) with a catalytic converter (5) which is located in the exhaust gas line (2) with an integrated oxygen reservoir (6), it is proposed that the air/fuel ratio be controlled as a function of at least one parameter of the internal combustion engine (1), at least one parameter of the catalytic converter (5), and/or as a function of the type and amount of the exhaust gas emissions which are currently occurring, in order to optimize the relative degree of filling of the oxygen reservoir (6) which is contained in the catalytic converter (5) for favorable conversion of the exhaust gas emissions. According to the proposal, matching to the current conversion demand and the current conversion performance is enabled and thus overall improved exhaust gas conversion is implemented.
    • 在利用具有集成氧气储存器(6)的位于排气管线(2)中的催化转化器(5)来控制内燃机(1)的供应空燃比的方法中, 提出将空燃比控制为内燃机(1)的至少一个参数,催化转化器(5)的至少一个参数和/或作为其中的类型和量的函数的函数 为了优化催化转化器(5)中包含的用于良好转化废气排放物的储氧器(6)的相对填充程度,目前正在发生废气排放。 根据该提案,能够匹配当前的转换需求和当前的转换性能,从而实现整体改进的废气转换。
    • 3. 发明申请
    • Method for Checking a Catalytic Converter Oxygen Storage Reservoir for Sufficient Storage Capacity
    • 检查催化转化器储氧库储存容量的方法
    • US20110056279A1
    • 2011-03-10
    • US12556752
    • 2009-09-10
    • Bodo Odendall
    • Bodo Odendall
    • G01M15/10
    • F01N11/007F01N3/0864F01N2550/03F01N2570/16F01N2900/1624F02D41/1495Y02T10/20Y02T10/47
    • Four cases are to be distinguished from one another for an exhaust gas line of a motor vehicle with an oxygen storage reservoir and a lambda probe located downstream from at least part of the oxygen storage reservoir, specifically in each case, whether or not the oxygen storage reservoir has sufficient storage capacity and whether or not the lambda probe is fully serviceable. For this purpose, the exhaust gas line is supplied in an alternating sequence with rich and lean exhaust gas, in two different passes the degree of oxygen filling being varied differently. For a minor variation of the degree of oxygen filling, the serviceability of the lambda probe can be deduced on the basis of certain criteria. If the lambda probe is fully serviceable, the sufficiency or insufficiency of the oxygen storage capacity of the oxygen storage reservoir can be deduced for a greater variation of the degree of oxygen filling.
    • 对于具有氧存储容器的机动车辆的排气管线和位于氧储存库的至少一部分的下游的λ探针,特别地在每种情况下,是否存储氧气存储器 储存器具有足够的存储容量以及λ探针是否完全可用。 为此,排气管线以交替排列的方式供应富含贫气的废气,在两个不同的通道中,氧气填充程度不同。 对于氧气填充程度的微小变化,可以基于某些标准来推导λ探针的适用性。 如果λ探针完全可以使用,则可以推断氧气储存器的储氧能力的充足或不充分,以使氧气填充程度的变化更大。
    • 4. 发明申请
    • Method for Determining the Oxygen Storage Capacity
    • 确定储氧容量的方法
    • US20110056269A1
    • 2011-03-10
    • US12797669
    • 2010-06-10
    • Bodo OdendallMartin Schneider
    • Bodo OdendallMartin Schneider
    • G01N7/00
    • F01N11/00F01N2550/02F01N2560/025F02D2200/0816Y02T10/47
    • During the measurement of the oxygen storage capacity of an oxygen storage system, which is assigned to a catalytic converter, a switchover operation from lean to rich exhaust gas or vice versa is effected. The measurement signals of a lambda probe are recorded; and an integral calculation is carried out over a time interval on the basis of the measurement values. Whereas in the past the start of the time interval was the point in time of the switchover operation, the present invention provides that the start of the second time interval is determined on the basis of the measurement signals of the second lambda probe i.e., the point in time is preferably fixed at the time at which these measurement values reach an extreme value. This design allows the oxygen storage capacity to be measured even if the lambda probe is not fully functioning totally correctly.
    • 在分配给催化转化器的氧气存储系统的储氧能力的测量期间,实现从贫燃料到富排气的反转操作,反之亦然。 记录λ探测器的测量信号; 并且基于测量值在时间间隔上执行积分计算。 而在过去,时间间隔的开始是切换操作的时间点,本发明提供了第二时间间隔的开始是基于第​​二个λ探测器的测量信号来确定的,即该点 优选地在这些测量值达到极限值的时刻固定。 该设计允许测量氧气存储容量,即使λ探针的功能完全不正确。
    • 5. 发明授权
    • Exhaust system for an internal combustion engine
    • 内燃机排气系统
    • US07788904B2
    • 2010-09-07
    • US10583737
    • 2004-11-12
    • Bodo Odendall
    • Bodo Odendall
    • F01N3/00
    • F02D41/1456F02D41/0295F02D2200/0814
    • The invention relates to an exhaust system for an internal combustion engine on a vehicle, comprising an exhaust catalyst and a probe arrangement in the region of the exhaust catalyst as component of a lambda regulation device in which the engine is alternately switched between a lean and rich operating region, depending on the probe signals recorded by the probe device. According to the invention, the probe arrangement is embodied as a single, lambda probe, continuously providing probe signals, arranged downstream of the exhaust catalyst, by means of which, in cooperation with the lambda regulation device, the increase of the oxygen content in the exhaust gas flow over the whole duration of the lean operation phase and the decrease in oxygen content in the exhaust gas flow over the whole duration of the rich operation phase are each recorded in relation to an oxygen content comparison value (U0), whereby in both the lean operation phase and the rich operation phase a switching threshold value (U1, U2; U1′) U2′) dependent on oxygen content is given, which, on reaching said value, the lambda regulation device is switched into the other operating region.
    • 本发明涉及一种用于车辆上的内燃机的排气系统,其包括排气催化剂和作为λ调节装置的组件的排气催化剂区域中的探针装置,其中发动机在稀薄和丰富之间交替切换 操作区域,具体取决于探头设备记录的探头信号。 根据本发明,探针装置被实施为单个λ探针,其连续地提供探针信号,布置在排气催化剂的下游,通过该探针信号与λ调节装置配合,增加氧气含量 在富运行阶段的整个持续时间内,在稀薄运行阶段的整个持续时间内的排气流动和废气流中的氧含量的减少分别相对于氧含量比较值(U0)记录,由此在两者 给出了稀薄运行阶段和丰富运行阶段取决于氧含量的切换阈值(U1,U2; U1')U2'),其在到达所述值时将λ调节装置切换到另一个运行区域。
    • 6. 发明申请
    • Method for operating a nitrogen ixide storage-type catalytic converter of an internal combustion engine, particularly of a motor vehicle
    • US20060053781A1
    • 2006-03-16
    • US10539420
    • 2003-09-05
    • Bodo Odendall
    • Bodo Odendall
    • F01N3/00F01N3/10
    • F01N9/005F01N11/00F01N2550/03F01N2560/026F02D41/0275F02D41/146F02D41/1462Y02T10/47
    • The invention relates to a process for operating a nitrogen oxide storage-type catalytic converter of an internal combustion engine, particularly of a motor vehicle, in which the nitrogen oxides which have been produced by the internal combustion engine are stored in the storage catalytic converter in the first operating phase (lean phase) as a storage phase for a specific storage time, and in which, after expiration of the storage time at a specific switching instant for a specific discharge time, switching to the second operating phase as the discharge phase takes place, in which the nitrogen oxides which were stored during the storage time are discharged from the storage catalytic converter, the switching instant in the storage phase being determined as a function of the nitrogen oxide slip as the difference between the nitrogen oxide mass flow which has flowed into the storage catalytic converter and the nitrogen oxide mass flow which has flowed out of the nitrogen oxide storage catalytic converter, each relative to the storage time. As claimed in the invention, to establish the switching instant from the storage phase to the discharge phase, the relative nitrogen oxide slip is determined such that the nitrogen oxide mass flow upstream of the nitrogen oxide storage catalytic converter and the nitrogen oxide mass flow downstream of the nitrogen oxide storage catalytic converter are each integrated over the time interval of the lean phase and the quotient of the integral values are brought into a relative relationship with a definable degree of conversion of the nitrogen oxide which can be derived from the exhaust gas boundary value, such that when this predetermined switching condition is present, switching from the storage phase to the discharge phase is carried out. In this way the fuel consumption can be reduced especially for a new storage catalytic converter using the full storage potential.
    • 8. 发明授权
    • Method for determining the oxygen storage capacity of a catalytic converter
    • 用于确定催化转化器的储氧容量的方法
    • US08522608B2
    • 2013-09-03
    • US13193054
    • 2011-07-28
    • Bodo Odendall
    • Bodo Odendall
    • G01M15/10
    • F02D41/0295F02D41/1441F02D41/1454F02D41/2438F02D41/2451
    • An offset in the signal of a pre-catalytic converter lambda probe of an exhaust gas system of an internal combustion engine affects a measured oxygen intake storage capacity and a measured oxygen removal storage capacity of an oxygen store with identical magnitude, but with opposite mathematical sign, so that their sum is independent of the offset. The oxygen intake storage capacity and the oxygen removal storage capacity are hereby determined until the output signal of the post-catalytic converter probe exceeds an intermediate threshold value of, for example, 0.45 V for intake and 0.8 V for removal. Exposure of the oxygen store to rich and/or lean exhaust gas is maintained after this threshold value has been crossed to ensure that the oxygen store is indeed sufficiently filled after the oxygen intake storage capacity has been measured, or is sufficiently emptied after the oxygen removal storage capacity has been measured.
    • 内燃机排气系统的预催化转换器λ探测器的信号偏移量影响测量的氧气摄取量和相同量值的氧储存器的测量除氧存储容量,但具有相反的数学符号 ,使得它们的和独立于偏移量。 因此,确定氧气进入储存容量和除氧存储容量,直到催化后转换器探针的输出信号超过例如用于进气的0.45V和去除0.8V的中间阈值。 在超过该阈值之后,将氧气储存器暴露于富含和/或贫的废气,以确保在已经测量了氧气摄取储存容量之后氧气储存确实充分地充满,或者在除氧之后被充分排空 存储容量已经被测量。