Method of evaluating deteriorated state of catalytic converter for purifying exhaust gas
    1.
    发明公开
    Method of evaluating deteriorated state of catalytic converter for purifying exhaust gas 有权
    一种用于评估劣化的催化剂的条件用于净化废气的方法

    公开(公告)号:EP1099836A2

    公开(公告)日:2001-05-16

    申请号:EP00310055.9

    申请日:2000-11-13

    IPC分类号: F01N11/00

    摘要: The characteristics of an output of an exhaust gas sensor (5) with respect to an air-fuel ratio of an engine (1) are expressed according to a quadratic function, and the parameters of the quadratic function are sequentially identified according to a sequential identifying algorithm using data of the output of the exhaust gas sensor and data of an output of an air-fuel sensor (4) which detects the air-fuel ratio of the engine. Deterioration evaluating parameters whose values change as the deterioration of a catalytic converter processes are sequentially determined from the identified values of the parameters of the quadratic function, and the deteriorated state of the catalytic converter (3) is evaluated based on the determined deterioration evaluating parameters.

    摘要翻译: 排气传感器(5)与在发动机的空气 - 燃料比相对于的输出的特性(1)是过表达的雅丁到一个二次函数,和二次函数的参数被逐次辨识雅丁到顺序确定 算法使用空气 - 燃料传感器(4),其检测所述发动机的空气 - 燃料比的输出的排气传感器和数据的输出的数据。 劣化评估参数,其值改变为催化转化器的过程的劣化依次确定性从所述二次函数的参数的认定值开采,和催化转化器(3)的劣化状态是基于确定性开采劣化评估参数进行评估。

    Air-fuel ratio control system for internal combustion engines
    2.
    发明公开
    Air-fuel ratio control system for internal combustion engines 失效
    内燃机的空燃比控制系统

    公开(公告)号:EP0799985A3

    公开(公告)日:1999-10-13

    申请号:EP97302353.4

    申请日:1997-04-07

    IPC分类号: F02D41/14

    摘要: An air-fuel control system for use with an internal combustion engine (1) has a catalytic converter (4) disposed in an exhaust system (A) of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor (6) disposed in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, a second exhaust gas sensor (7) disposed in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter, and a control unit (8) for controlling an air-fuel ratio of the engine based on outputs from the first exhaust gas sensor and the second exhaust gas sensor. The control unit includes an adaptive sliding mode controller (19) for determining a correction quantity to correct the air-fuel ratio of the engine so as to equalize the concentration of the component of the exhaust gas downstream of the catalytic converter to a predetermined appropriate value, according to an adaptive sliding mode control process based on the output from the second exhaust gas sensor, and a feedback controller (17) for controlling a rate at which fuel is supplied to the engine so as to converge the concentration of the component of the exhaust gas downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity and the output from the first exhaust gas sensor (6).

    摘要翻译: 与内燃机(1)一起使用的空气燃料控制系统具有设置在发动机的排气系统(A)中的催化转化器(4),用于净化从发动机排出的排气,第一排气传感器 (6),设置在排气系统中用于检测催化转化器上游的排气的空燃比;第二排气传感器(7),设置在排气系统中用于检测排气的成分浓度,其中 已经通过催化转换器的催化转换器下游,以及控制单元(8),用于基于来自第一排气传感器和第二排气传感器的输出来控制发动机的空燃比。 控制单元包括自适应滑动模式控制器(19),用于确定校正量以校正发动机的空燃比,从而将催化转换器下游的排气成分的浓度均衡到预定的适当值 ,根据基于第二废气传感器的输出的自适应滑动模式控制过程,以及反馈控制器(17),用于控制向发动机供应燃料的速率,以便收敛 基于所述校正量和来自所述第一排气传感器(6)的输出,将所述催化转换器下游的排气朝向所述预定的适当值。

    Air-fuel ratio control system for internal combustion engines
    3.
    发明公开
    Air-fuel ratio control system for internal combustion engines 失效
    Luft-Brennstoff-VerhältnisregelvorrichtungfürBrennkraftmaschinen

    公开(公告)号:EP0799988A2

    公开(公告)日:1997-10-08

    申请号:EP97302375.7

    申请日:1997-04-07

    IPC分类号: F02D41/14

    摘要: An air-fuel control system for use with an internal combustion engine (1) has a catalytic converter (4) in an exhaust system (A) of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor (6) in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, and a second exhaust gas sensor (7) in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter. A sliding mode controller (19) determines a correction quantity at a first period to correct the air-fuel ratio of the engine so as to equalize the concentration of the component downstream of the catalytic converter to a predetermined appropriate value, according to a sliding mode control process based on the output from the second exhaust gas sensor. A feedback controller (17) determines a correction quantity at a second period for a rate at which fuel is supplied to the engine so as to converge the concentration of the component downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity to correct the air-fuel ratio and the output from the first exhaust gas sensor, and feedback-controls the rate at which fuel is supplied to the engine with the determined correction quantity. The first and second periods are established separately from each other.

    摘要翻译: 用于内燃机(1)的空燃控制系统在发动机的排气系统(A)中具有用于净化从发动机排出的废气的催化转化器(4),第一排气传感器 6),用于检测催化转化器上游排气的空燃比的排气系统和排气系统中的第二排气传感器(7),用于检测已经通过的废气的成分浓度 通过催化转化器,催化转化器的下游。 滑动模式控制器(19)根据滑动模式确定在第一时间段的校正量,以校正发动机的空燃比,以将催化转化器下游的组分的浓度相等于预定的适当值 基于来自第二废气传感器的输出的控制过程。 反馈控制器(17)基于校正量确定向发动机提供燃料的速率的第二时间段的校正量,以使催化转化器下游的组分的浓度朝向预定的适当值收敛 以校正空燃比和来自第一排气传感器的输出,并且以确定的校正量反馈控制向发动机供应燃料的速率。 第一和第二个时期是彼此分开建立的。

    Apparatus for controlling internal combustion engine
    5.
    发明公开
    Apparatus for controlling internal combustion engine 有权
    Verfahren und Vorrichtung zur Regelung der Drehzahl einer Brennkraftmaschine

    公开(公告)号:EP0990794A2

    公开(公告)日:2000-04-05

    申请号:EP99307816.1

    申请日:1999-10-04

    IPC分类号: F02P5/06 F02D37/02 F02P5/15

    摘要: A control apparatus controls the rotational speed of an internal combustion engine by generating a command value for ignition timing of the internal combustion engine to convert an actual rotational speed of the internal combustion engine to a predetermined target rotational speed according to a feedback control process and controlling the ignition timing based on the generated command value. The feedback control process is carried out by a response designating control process capable of variably designating a rate of reduction of the difference between the actual rotational speed of the internal combustion engine and the target rotational speed with the value of a predetermined parameter in the feedback control process. The value of the predetermined parameter is variably established under a predetermined condition.

    摘要翻译: 控制装置通过根据反馈控制处理生成用于内燃机的点火正时的指令值,将内燃机的实际转速转换为规定的目标转速,来控制内燃机的转速, 基于所生成的命令值的点火正时。 反馈控制处理通过响应指定控制处理进行,该响应指定控制处理能够可变地指定内燃机的实际转速与目标转速之间的差的减小率与反馈控制中的预定参数的值 处理。 在预定条件下可变地建立预定参数的值。

    Apparatus for controlling internal combustion engine
    10.
    发明公开
    Apparatus for controlling internal combustion engine 有权
    Vorrichtung zur Steuerung einer Brennkraftmaschine

    公开(公告)号:EP0990785A2

    公开(公告)日:2000-04-05

    申请号:EP99307815.3

    申请日:1999-10-04

    IPC分类号: F02D41/14 F02D41/06 F02D41/08

    摘要: A control apparatus controls an internal combustion engine by generating a command value for a manipulative quantity of a flow control valve disposed in an intake air passage of an internal combustion engine controllable by the flow control valve, according to a sliding mode control process in order to converge a predetermined control quantity relative to the internal combustion engine to a target value thereof. An object to be controlled by the sliding mode control process is modeled by a discrete system for generating the control quantity from the command value for the manipulative quantity of the flow control valve. The sliding mode control process uses a switching function constructed by a linear function composed of a plurality of time-series data of the difference between the control quantity and the target value. An algorithm for generating the command value for the manipulative quantity of the flow control valve in a predetermined control cycle according to the sliding mode control process is constructed based on the discrete-system model of the object to be controlled and the switching function.

    摘要翻译: 控制装置通过根据滑动模式控制处理产生用于通过流量控制阀控制的设置在内燃机的进气通道中的流量控制阀的操作量的命令值,以便控制内燃机,以便 将相对于内燃机的预定控制量收敛到其目标值。 通过滑动模式控制过程控制的对象由用于从流量控制阀的操作量的命令值产生控制量的离散系统建模。 滑动模式控制处理使用由由控制量和目标值之间的差的多个时间序列数据组成的线性函数构成的切换功能。 基于要控制的对象的离散系统模型和切换功能,构建根据滑动模式控制处理在预定控制周期中为流量控制阀的操作量产生命令值的算法。