METHOD AND DEVICE FOR THE DIAGNOSIS OF THE CYLINDER-SELECTIVE UNEVEN DISTRIBUTION OF A FUEL-AIR MIXTURE FED TO THE CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
    1.
    发明申请
    METHOD AND DEVICE FOR THE DIAGNOSIS OF THE CYLINDER-SELECTIVE UNEVEN DISTRIBUTION OF A FUEL-AIR MIXTURE FED TO THE CYLINDERS OF AN INTERNAL COMBUSTION ENGINE 有权
    用于诊断气体选择性的燃料空气混合物分配到内燃机的气缸的方法和装置

    公开(公告)号:US20100286892A1

    公开(公告)日:2010-11-11

    申请号:US12302604

    申请日:2007-05-21

    IPC分类号: F02D28/00 G01M15/04 G01M15/06

    摘要: With an internal combustion engine (1) there is the problem that the fuel-air mixture directed into the combustion chamber of the cylinders (2) can be substantially influenced by manufacturing tolerances and ageing of the fuel injectors and uneven distribution is thus created. According to the invention it is therefore proposed that the uneven distribution is individually determined for each cylinder (2) depending on the operating mode of the internal combustion engine (1) (homogenous operation, stratified operation), wherein either the exhaust gas is analyzed and a corresponding emission value is determined there from or that a value is individually determined for each cylinder (2) for the operational roughness of the internal combustion engine (1). These values are compared with a limit value predetermined for the internal combustion engine (1) and upon exceeding of the predetermined limit value a fault entry in a fault memory (9) is made for the cylinder (2) concerned.

    摘要翻译: 使用内燃机(1)存在导向气缸(2)的燃烧室的燃料 - 空气混合物可以基本上受到燃料喷射器的制造公差和老化的影响,从而产生不均匀分布的问题。 因此,根据本发明,提出根据内燃机(1)的运行模式(均匀运行,分层运转),针对每个气缸(2)分别确定不均匀分布,其中对废气进行分析, 对于内燃机(1)的操作粗糙度,从每个气缸(2)单独确定相应的排放值。 将这些值与对于内燃机(1)预定的极限值进行比较,并且超过预定极限值时,对于所涉及的气缸(2)进行故障存储器(9)的故障输入。

    Method and device for operating an internal combustion engine
    2.
    发明授权
    Method and device for operating an internal combustion engine 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US07894972B2

    公开(公告)日:2011-02-22

    申请号:US12296442

    申请日:2007-05-31

    IPC分类号: B60T7/12

    摘要: By a respective cylinder-specific lambda regulator, a regulator value for influencing the air/fuel ratio in the respective cylinder is determined as a function of the cylinder-specific air/fuel ratio measured for the respective cylinder. The regulator value is monitored for the attainment of a first predefined threshold value, and when the latter is reached, a lambda quality value is determined which is representative of the deviation of the measured cylinder-specific air/fuel ratios assigned to the respective cylinders. The regulator value is monitored for the attainment of a second predefined threshold value which is representative of a more pronounced regulating intervention than the first threshold value. When the second predefined threshold value is reached, the lambda quality value is determined. If the lambda quality value assigned to the first threshold value is lower than the value assigned to the second threshold value, unstable regulating behavior is identified. Stable regulating behavior is identified otherwise.

    摘要翻译: 通过相应的气缸专用λ调节器,确定用于影响相应气缸中的空气/燃料比的调节器值作为针对相应气缸测量的气缸特定空气/燃料比的函数。 监测调节器值以获得第一预定阈值,并且当达到第一预定义阈值时,确定λ质量值,其表示分配给相应气缸的测量的气缸特定空气/燃料比的偏差。 监测调节器值达到第二预定义阈值,其表示比第一阈值更明显的调节干预。 当达到第二预定阈值时,确定λ质量值。 如果分配给第一阈值的λ质量值低于分配给第二阈值的值,则识别出不稳定的调节行为。 否则确定稳定的调节行为。

    Method and Device for Adapting the Recording of a Measured Signal for an Exhaust Probe
    4.
    发明申请
    Method and Device for Adapting the Recording of a Measured Signal for an Exhaust Probe 有权
    适用于排气探头测量信号记录的方法和装置

    公开(公告)号:US20090090338A1

    公开(公告)日:2009-04-09

    申请号:US11989176

    申请日:2006-06-30

    IPC分类号: F02D41/00

    摘要: An exhaust probe is arranged on an internal combustion engine with multiple cylinders and the injection valves provided for the cylinders measure the fuel. The exhaust probe is arranged on an exhaust manifold, and the measured signal is characteristic of the air/fuel ratio in the corresponding cylinder. The measured signal is recorded at a given crankshaft angle with relation to a reference position for the piston and allocated to the corresponding cylinder. A set parameter for adjustment of the air/fuel ratio in the corresponding cylinder is generated depending on the measured signal recorded for each cylinder. The given crankshaft angle is adjusted depending on a value criterion which depends on a uneven running of an output shaft from the internal combustion engine.

    摘要翻译: 在具有多个气缸的内燃机上布置有排气探头,并且为气缸设置的喷射阀测量燃料。 排气探头设置在排气歧管上,测量信号是相应气缸中空气/燃料比的特征。 测量信号相对于活塞的参考位置以给定的曲轴角度记录并分配给相应的气缸。 根据为每个气缸记录的测量信号,产生用于调节相应气缸中的空气/燃料比的设定参数。 给定的曲轴角度根据取决于来自内燃机的输出轴的不均匀运行的值标准来调节。

    Method for adjusting a defined oxygen concentration by means of binary lambda regulation in order to diagnose an exhaust gas catalyst
    5.
    发明授权
    Method for adjusting a defined oxygen concentration by means of binary lambda regulation in order to diagnose an exhaust gas catalyst 有权
    通过二元λ调节来调节定义的氧浓度以便诊断废气催化剂的方法

    公开(公告)号:US07343734B2

    公开(公告)日:2008-03-18

    申请号:US10510648

    申请日:2004-01-15

    IPC分类号: F01N3/00

    摘要: The invention relates to a method for diagnosing a regulated exhaust gas catalyst, according to which regulating the catalyst results in control cycles, catalyst diagnosis being performed at a predetermined oxygen concentration per control cycle. A fuel mixture can be adjusted fat or lean according to a specific lambda control factor. A fat or lean exhaust gas is detected, the lambda control factor being incrementally decreased when a lean exhaust gas is detected. The lambda control factor is modified by a P step following a detected change from a fat to lean exhaust gas or from a lean to a fat exhaust gas, the lambda control factor being set to a minimum value during a first loading period following a detected change from a fat exhaust gas to a lean exhaust gas while being set to a maximum value during a second loading period following a detected change from a lean exhaust gas to a fat exhaust gas. The first and the second loading period are adjusted such that the oxygen concentration reaches the predetermined oxygen concentration in each control cycle.

    摘要翻译: 本发明涉及一种用于诊断调节废气催化剂的方法,根据该方法调节催化剂导致控制循环,催化剂诊断以每个控制循环的预定氧浓度进行。 燃料混合物可以根据特定的λ控制因子调节脂肪或瘦。 检测到肥胖或贫乏的废气,当检测到贫排气时,λ控制因子逐渐减小。 根据从脂肪到稀薄废气或从贫脂到排脂的检测到的变化,通过P步骤修改λ控制因子,在检测到的变化之后的第一加载周期期间将λ控制因子设置为最小值 在从贫排气到脂肪排气的检测到的变化之后的第二加载期间,将其从排气排出至贫排气,同时设定为最大值。 调整第一和第二装载周期,使得氧浓度在每个控制循环中达到预定的氧浓度。

    Method for adjusting a defined oxygen concentration by means of binary lambda regulation in order to diagnose an exhaust gas catalyst
    6.
    发明申请
    Method for adjusting a defined oxygen concentration by means of binary lambda regulation in order to diagnose an exhaust gas catalyst 有权
    通过二元λ调节来调节定义的氧浓度以便诊断废气催化剂的方法

    公开(公告)号:US20050252196A1

    公开(公告)日:2005-11-17

    申请号:US10510648

    申请日:2004-01-15

    摘要: The invention relates to a method for diagnosing a regulated exhaust gas catalyst, according to which regulating the catalyst results in control cycles, catalyst diagnosis being performed at a predetermined oxygen concentration per control cycle. A fuel mixture can be adjusted fat or lean according to a specific lambda control factor. A fat or lean exhaust gas is detected, the lambda control factor being incrementally decreased when a lean exhaust gas is detected. The lambda control factor is modified by a P step following a detected change from a fat to lean exhaust gas or from a lean to a fat exhaust gas, the lambda control factor being set to a minimum value during a first loading period following a detected change from a fat exhaust gas to a lean exhaust gas while being set to a maximum value during a second loading period following a detected change from a lean exhaust gas to a fat exhaust gas. The first and the second loading period are adjusted such that the oxygen concentration reaches the predetermined oxygen concentration in each control cycle.

    摘要翻译: 本发明涉及一种用于诊断调节废气催化剂的方法,根据该方法调节催化剂导致控制循环,催化剂诊断以每个控制循环的预定氧浓度进行。 燃料混合物可以根据特定的λ控制因子调节脂肪或瘦。 检测到肥胖或贫乏的废气,当检测到贫排气时,λ控制因子逐渐减小。 根据从脂肪到稀薄废气或从贫脂到排脂的检测到的变化,通过P步骤修改λ控制因子,在检测到的变化之后的第一加载周期期间将λ控制因子设置为最小值 在从贫排气到脂肪排气的检测到的变化之后的第二加载期间,将其从排气排出至贫排气,同时设定为最大值。 调整第一和第二装载周期,使得氧浓度在每个控制循环中达到预定的氧浓度。

    Method and device for adapting the recording of a measured signal for an exhaust probe
    7.
    发明授权
    Method and device for adapting the recording of a measured signal for an exhaust probe 有权
    用于调整用于排气探测器的测量信号的记录的方法和装置

    公开(公告)号:US07762244B2

    公开(公告)日:2010-07-27

    申请号:US11989176

    申请日:2006-06-30

    IPC分类号: F02D41/00 F02D41/14 F01N9/00

    摘要: An exhaust probe is arranged on an internal combustion engine with multiple cylinders and the injection valves provided for the cylinders measure the fuel. The exhaust probe is arranged on an exhaust manifold, and the measured signal is characteristic of the air/fuel ratio in the corresponding cylinder. The measured signal is recorded at a given crankshaft angle with relation to a reference position for the piston and allocated to the corresponding cylinder. A set parameter for adjustment of the air/fuel ratio in the corresponding cylinder is generated depending on the measured signal recorded for each cylinder. The given crankshaft angle is adjusted depending on a value criterion which depends on a uneven running of an output shaft from the internal combustion engine.

    摘要翻译: 在具有多个气缸的内燃机上布置有排气探头,并且为气缸设置的喷射阀测量燃料。 排气探头设置在排气歧管上,测量信号是相应气缸中空气/燃料比的特征。 测量信号相对于活塞的参考位置以给定的曲轴角度记录并分配给相应的气缸。 根据为每个气缸记录的测量信号,产生用于调节相应气缸中的空气/燃料比的设定参数。 给定的曲轴角度根据取决于来自内燃机的输出轴的不均匀运行的值标准来调节。

    Regulator device for compensating for dispersions of injectors
    9.
    发明授权
    Regulator device for compensating for dispersions of injectors 有权
    用于补偿喷射器分散体的调节器装置

    公开(公告)号:US07693644B2

    公开(公告)日:2010-04-06

    申请号:US11885581

    申请日:2006-02-27

    IPC分类号: F02D41/14 F02D41/20

    摘要: Injectors each having a piezo actuator are assigned to cylinders of an internal combustion engine. A regulator device is configured for furnishing a cylinder-specific controlled variable and a command variable to a controller whose primary manipulated variable is a variable representing an electrical power supplied to the piezo actuator during a control cycle. A manipulated variable splitting unit is provided whose input variable is a regulator-determined regulator value of the primary manipulated variable and is configured for determining a total value of the primary manipulated variable according to the regulator value. It is also configured for splitting the total value into a primary value of the primary manipulated variable and into a secondary value of a secondary manipulated variable according to a lower and/or upper threshold value of the total value.

    摘要翻译: 每个具有压电致动器的喷射器分配给内燃机的气缸。 调节器装置被配置为向控制器提供气缸专用控制变量和命令变量,控制器的主操作变量是表示在控制循环期间提供给压电致动器的电力的变量。 提供了一种操纵变量分割单元,其输入变量是主调节变量的调节器确定的调节器值,并且被配置为根据调节器值确定主要操作变量的总值。 它还被配置为根据总值的较低和/或上限阈值将总值分解为主要操纵变量的主值,并将其分解为辅助操作变量的辅助值。

    Method and device for determining a corrective value used for influencing an air/fuel ratio
    10.
    发明授权
    Method and device for determining a corrective value used for influencing an air/fuel ratio 有权
    用于确定用于影响空气/燃料比的校正值的方法和装置

    公开(公告)号:US07676317B2

    公开(公告)日:2010-03-09

    申请号:US11885267

    申请日:2006-02-08

    IPC分类号: F02D41/30

    摘要: The invention relates to a method for the cylinder-selective control of an air/fuel mixture to be burnt in a multi-cylinder internal combustion engine, in which the lambda values for different cylinders or groups of cylinders are separately sensed and controlled, and also relates to a multi-cylinder internal engine suitable for carrying out the method. In accordance with the invention, the lambda values of the individual cylinders or groups of cylinders are simultaneously controlled to different required values using an integrating I-control proportion with variable integrator slope and/or a differentiating D-control proportion.

    摘要翻译: 本发明涉及一种用于气缸选择性控制要在多缸内燃机中燃烧的空气/燃料混合物的方法,其中不同气缸或气缸组的λ值被分开地感测和控制,并且还 涉及适用于执行该方法的多气缸内部发动机。 根据本发明,使用具有可变积分器斜率和/或微分D控制比例的积分I控制比例将各个气缸或气缸组的λ值同时控制到不同的所需值。