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公开(公告)号：US06523531B1
公开(公告)日：2003-02-25
申请号：US09997797
申请日：2001-12-03
IPC分类号： F02D4114
CPC分类号： F02D41/1454 , F02D41/0042 , F02D41/0045 , F02D2041/141 , F02D2041/1433
摘要： A method for air/fuel operation of an engine. The engine is supplied fuel from both a fuel purging system to purge fuel in a fuel supply and feed such purged fuel to an intake manifold of the engine and a fuel injection system to inject fuel from such fuel supply into a cylinder of such engine. The method includes producing a first air/fuel ratio control signal in accordance with measured exhaust gas oxygen emission from the engine; producing a second air/fuel ratio control signal in accordance with fuel transport delay through the fuel purging system; combining the first and second air/fuel ratio control signals into a composite control signal; and feeding such composite control signal to the fuel injection system. Producing the first air/fuel ratio control signal comprises determining fuel flow rate through the purge system. The purge system includes a valve, such valve passing the fuel in the purging system to the intake manifold at a rate relate to a duty cycle of a control signal fed to such valve and wherein the flow rate is determined in response to the duty cycle the control signal fed to the valve. The purge system includes a hydrocarbon sensor responsive to fuel in the purging system and wherein the first air/fuel ratio control signal is produced in accordance with an output of such sensor. The method includes determining a species of hydrocarbon in the fuel being purged and adjusting the first air/fuel ratio control signal in accordance with the determined species. The species determination comprises determining from the exhaust gas oxygen a deviation of the engine emissions from stoichiometry. The method includes providing a model of the engine. The model represents a relationship between: (1) a signal model LAMBSE, representative of estimated air/fuel ratio of the engine relative to a stoichiometric air/fuel ratio for the engine; and, (2) fuel injected into the cylinder of the engine. Exhaust gas oxygen emission from the engine is measured during operation of such engine. Actual LAMBSE produced by such engine during operation of such engine is produced as a function of such measured oxygen. The actual LAMBSE is compared with the model LAMBSE provided by the model in response to fuel injected into the engine to produce a model error signal. The fuel injected into the engine is adjusted in accordance with the error signal.
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公开(公告)号：US06666200B2
公开(公告)日：2003-12-23
申请号：US10010211
申请日：2001-12-10
IPC分类号： F02D4114
CPC分类号： F02D41/1454 , F02D41/0042 , F02D41/0045 , F02D41/1401 , F02D41/1458 , F02D2041/141 , F02D2041/1433
摘要： A method for air/fuel operation of an engine. The method includes providing a model of the engine. The model represents a relationship between: (1) a signal model LAMBSE, representative of estimated air/fuel ratio of the engine relative to a stoichiometric air/fuel ratio for the engine; and, (2) fuel injected into the cylinder of the engine. Exhaust gas oxygen emission from the engine is measured during operation of such engine. Actual LAMBSE produced by such engine during operation of such engine is produced as a function of such measured oxygen. The actual LAMBSE is compared with the model LAMBSE provided by the model in response to fuel injected into the engine to produce a model error signal. The fuel injected into the engine is adjusted in accordance with the error signal.
摘要翻译： 一种用于发动机的空燃操作的方法。 该方法包括提供发动机的模型。 该模型表示以下关系：（1）代表发动机相对于发动机的化学计量空气/燃料比的估计空燃比的信号模型LAMBSE; 和（2）喷射到发动机气缸中的燃料。 在这种发动机的运行期间测量来自发动机的废气氧气排放。 在这种发动机的运行期间由这种发动机产生的实际LAMBSE是作为测量的氧气的函数产生的。 将实际的LAMBSE与模型提供的模型LAMBSE进行比较，以响应注入发动机的燃料产生模型误差信号。 根据误差信号调整注入发动机的燃料。
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公开(公告)号：US5921221A
公开(公告)日：1999-07-13
申请号：US75291
申请日：1998-05-08
申请人： Leighton Ira Davis, Jr. , Charles Stuart Daw , Lee Albert Feldkamp , John William Hoard , Fumin Yuan , Francis Thomas Connolly
发明人： Leighton Ira Davis, Jr. , Charles Stuart Daw , Lee Albert Feldkamp , John William Hoard , Fumin Yuan , Francis Thomas Connolly
CPC分类号： F02D41/1498 , F02D2200/1012 , F02D2200/1015
摘要： Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling.
摘要翻译： 通过使用检测到的加速度来检测在燃烧事件（k）中的气缸（i）中的扭转加速度的发动机燃烧事件输出来减少燃烧发动机的燃烧中的循环变化，以预测气缸 下一个燃烧事件（k + 1），通过与气缸（i）的燃烧事件输出的平均相位成反比的校正项来修正目标输出，并计算诸如燃料脉冲宽度或火花时间之类的控制输出， 基于与检测到的加速和加油溢出效应的反相关，实现燃烧事件（k + 1）下气缸（i）的目标加速度。
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公开(公告)号：US06990800B2
公开(公告)日：2006-01-31
申请号：US10717120
申请日：2003-11-19
IPC分类号： F10N3/00
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/2066 , F01N13/009 , F01N2240/16 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/1475 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.
摘要翻译： 提出了主动精氨酸（ALNC）催化剂的精确热力学模型。 该模型考虑了ALNC的碳氢化合物储存和释放机理，以及由于老化导致的ALNC烃转化效率的降低，从而提供了对ALNC中烃燃烧产生的放热的更准确的估计。 估计放热可用于检测系统退化并识别负责退化的组件。
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公开(公告)号：US06990854B2
公开(公告)日：2006-01-31
申请号：US10717119
申请日：2003-11-19
IPC分类号： G01M15/00
CPC分类号： F02D41/0295 , F01N3/2066 , F01N9/005 , F01N11/002 , F01N11/005 , F01N2550/02 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F02D2200/0406 , F02D2200/0414 , F02D2200/0802 , Y02A50/2344 , Y02T10/24 , Y02T10/47
摘要： An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.
摘要翻译： 提出了主动精氨酸（ALNC）催化剂的精确热力学模型。 该模型考虑了ALNC的碳氢化合物储存和释放机理，以及由于老化导致的ALNC烃转化效率的降低，从而提供了对ALNC中烃燃烧产生的放热的更准确的估计。 估计放热可用于检测系统退化并识别负责退化的组件。
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公开(公告)号：US20050102998A1
公开(公告)日：2005-05-19
申请号：US10717120
申请日：2003-11-19
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/2066 , F01N13/009 , F01N2240/16 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/1475 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.
摘要翻译： 提出了主动精氨酸（ALNC）催化剂的精确热力学模型。 该模型考虑了ALNC的碳氢化合物储存和释放机理，以及由于老化导致的ALNC烃转化效率的降低，从而提供了对ALNC中烃燃烧产生的放热的更准确的估计。 估计放热可用于检测系统退化并识别负责退化的组件。
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7.发明授权Microcontroller fuzzy logic processing module using selectable membership function shapes 失效微控制器模糊逻辑处理模块采用可选择的隶属函数形状
公开(公告)号：US5491775A
公开(公告)日：1996-02-13
申请号：US310894
申请日：1994-09-22
CPC分类号： G06N7/04 , G05B13/0275 , Y10S706/90
摘要： A standardized microcontroller-based fuzzy logic processing module for generating control signal values in response to variable input signal values in accordance with constraints imposed by propositions or "rules" stored in memory in a standardized format. Each rule consists of one or more input conditions and an output directive. Each input signal and the output signal values are characterizable by their degree of membership in a predetermined number of fuzzy sets, each fuzzy set being defined by a membership function. Each input condition is composed of a reference to a particular input variable, which has been preprocessed into integer (whole number) normalized form and a reference to a membership function. Each output directive includes a reference to a further membership function. Each membership function is implemented by one of a three possible forms of standard membership data structures: a triangular function represented by three data points, a table lookup function represented by a two end data points and the points between these two end points, and an standard shape function composed of a set of data points and a set of reference points used to form a similar shape function by interpolation. Fuzzy logic processing is accomplished by determining the extent to which the input conditions are satisfied by the current values of the input signals in order to develop a rule strength value, and then performing a "center-of-gravity" determination based on the output membership function values of each satisfied rule integrated over the range of possible output signal values.
摘要翻译： 一种基于标准化的基于微控制器的模糊逻辑处理模块，用于根据以标准格式存储在存储器中的命题或“规则”所施加的约束，响应于可变输入信号值产生控制信号值。 每个规则由一个或多个输入条件和输出指令组成。 每个输入信号和输出信号值可以通过其在预定数量的模糊集合中的隶属度来表征，每个模糊集合由隶属函数定义。 每个输入条件由对特定输入变量的引用组成，该输入变量已被预处理为整数（整数）归一化形式和对隶属函数的引用。 每个输出指令包括对另一个成员函数的引用。 每个隶属函数由标准成员数据结构的三种可能形式之一实现：由三个数据点表示的三角函数，由两端数据点表示的表查找函数和这两个端点之间的点，以及标准 形状函数由一组数据点和一组用于通过插值形成类似形状函数的参考点组成。 模糊逻辑处理是通过确定输入条件满足输入条件的程度来实现的，以便产生规则强度值，然后基于输出成员进行“重心”确定 在可能的输出信号值的范围内集成的每个满足规则的函数值。
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公开(公告)号：US20050252197A1
公开(公告)日：2005-11-17
申请号：US11188177
申请日：2005-07-22
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/2066 , F01N13/009 , F01N2240/16 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/1475 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.
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公开(公告)号：US20050103099A1
公开(公告)日：2005-05-19
申请号：US10717119
申请日：2003-11-19
CPC分类号： F02D41/0295 , F01N3/2066 , F01N9/005 , F01N11/002 , F01N11/005 , F01N2550/02 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F02D2200/0406 , F02D2200/0414 , F02D2200/0802 , Y02A50/2344 , Y02T10/24 , Y02T10/47
摘要： An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.
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公开(公告)号：US4550402A
公开(公告)日：1985-10-29
申请号：US564611
申请日：1983-12-22
申请人： Melvin G. Gable , Richard H. Sherman , Fumin Yuan
发明人： Melvin G. Gable , Richard H. Sherman , Fumin Yuan
CPC分类号： H04L12/4604 , H04L29/00
摘要： A data communication system for providing data transmission between a plurality of individually addressable local computer networks, by utilizing single node switching across a common passive bus medium. The passive bus medium is characterized as having a plurality of separate conductors of limited length that are each commonly connected to individual bus interface circuits for each local computer network. Each bus interface circuit has a number of dedicated address data ports, message data ports and control ports that are connected to separate dedicated conductors of the passive bus medium for transmitting data to and receiving data from other local computer networks. Each message transmission of data on the passive bus medium is divided into a number of mini-packets each of which contain a number of parallely transmitted bits corresponding to the number of dedicated address and message conductors in the passive bus medium. Each mini-packet is separately transmitted on the passive bus medium and separately acknowledged by the designated receiving bus interface circuit. Mini-packets are of two types for each message. The first group of mini-packets precedes the second group and contains destination address in its header portion and word count information in its message portion. The second group constitutes the remainder of the message and each mini-packet of this group contains the source address in the header portion and message data in the message portion.
摘要翻译： 一种数据通信系统，用于通过跨公共无源总线介质的单节点切换，在多个单独可寻址的本地计算机网络之间提供数据传输。 无源总线介质的特征在于具有有限长度的多个单独的导体，每个导体通常连接到用于每个本地计算机网络的各个总线接口电路。 每个总线接口电路具有多个专用地址数据端口，消息数据端口和控制端口，其连接到无源总线介质的分离的专用导体，用于向其他本地计算机网络发送数据并从其接收数据。 无源总线介质上的数据的每个消息传输被分成多个微型分组，每个小分组包含与被动总线介质中的专用地址和消息导体的数量相对应的多个平行发送的比特数。 每个迷你数据包分别在无源总线介质上传输，并由指定的接收总线接口电路单独确认。 每个消息都有两种类型的迷你数据包。 第一组小分组在第二组之前，并且在其报头部分中包含目的地址，并在其消息部分中包含字计数信息。 第二组构成消息的剩余部分，并且该组的每个小分组包含报头部分中的源地址和消息部分中的消息数据。
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