-
公开(公告)号：US07225800B2
公开(公告)日：2007-06-05
申请号：US11019552
申请日：2004-12-23
CPC分类号： F02D41/1495 , F02D41/008 , F02D41/1454 , F02D41/1456 , F02D2041/1409 , F02D2041/1422 , F02D2041/288
摘要： The invention provides an engine controller, which can determine a deterioration mode (gain deterioration or response deterioration) of an air/fuel (A/F) ratio sensor, can detect a degree of the deterioration with high accuracy, and can optimize A/F ratio feedback control in accordance with the diagnosis result. The controller includes a unit for computing frequency response characteristics in a range from an A/F ratio adjusting unit to the A/F ratio sensor, and it diagnoses the A/F ratio sensor based on a gain characteristic and a response characteristic given by the computed frequency response characteristics. In accordance with the diagnosis result, parameters (P- and I-component gains) used in A/F ratio feedback control (PI control) are optimized.
摘要翻译： 本发明提供一种可以确定空气/燃料（A / F）比率传感器的劣化模式（增益劣化或响应劣化）的发动机控制器能够以高精度检测劣化程度，并且可以优化A / F 比例反馈控制根据诊断结果。 该控制器包括用于计算从A / F比调整单元到A / F比传感器的范围内的频率响应特性的单元，并且基于增益特性和由A / F比传感器给出的响应特性来诊断A / F比传感器 计算频率响应特性。 根据诊断结果，优化了A / F比反馈控制（PI控制）中使用的参数（P-和I-分量增益）。
-
公开(公告)号：US07441554B2
公开(公告)日：2008-10-28
申请号：US11738955
申请日：2007-04-23
IPC分类号： F02D41/30
CPC分类号： F02D41/1495 , F02D41/008 , F02D41/1454 , F02D41/1456 , F02D2041/1409 , F02D2041/1422 , F02D2041/288
摘要： The invention provides an engine controller, which can determine a deterioration mode (gain deterioration or response deterioration) of an air/fuel (A/F) ratio sensor, can detect a degree of the deterioration with high accuracy, and can optimize A/F ratio feedback control in accordance with the diagnosis result. The controller includes a unit for computing frequency response characteristics in a range from an A/F ratio adjusting unit to the A/F ratio sensor, and it diagnoses the A/F ratio sensor based on a gain characteristic and a response characteristic given by the computed frequency response characteristics. In accordance with the diagnosis result, parameters (P- and I-component gains) used in A/F ratio feedback control (PI control) are optimized.
摘要翻译： 本发明提供一种可以确定空气/燃料（A / F）比率传感器的劣化模式（增益劣化或响应劣化）的发动机控制器能够以高精度检测劣化程度，并且可以优化A / F 比例反馈控制根据诊断结果。 该控制器包括用于计算从A / F比调整单元到A / F比传感器的范围内的频率响应特性的单元，并且基于增益特性和由A / F比传感器给出的响应特性来诊断A / F比传感器 计算频率响应特性。 根据诊断结果，优化了A / F比反馈控制（PI控制）中使用的参数（P-和I-分量增益）。
-
公开(公告)号：US20050161032A1
公开(公告)日：2005-07-28
申请号：US11019552
申请日：2004-12-23
CPC分类号： F02D41/1495 , F02D41/008 , F02D41/1454 , F02D41/1456 , F02D2041/1409 , F02D2041/1422 , F02D2041/288
摘要： The invention provides an engine controller, which can determine a deterioration mode (gain deterioration or response deterioration) of an air/fuel (A/F) ratio sensor, can detect a degree of the deterioration with high accuracy, and can optimize A/F ratio feedback control in accordance with the diagnosis result. The controller includes a unit for computing frequency response characteristics in a range from an A/F ratio adjusting unit to the A/F ratio sensor, and it diagnoses the A/F ratio sensor based on a gain characteristic and a response characteristic given by the computed frequency response characteristics. In accordance with the diagnosis result, parameters (P- and I-component gains) used in A/F ratio feedback control (PI control) are optimized.
摘要翻译： 本发明提供一种可以确定空气/燃料（A / F）比率传感器的劣化模式（增益劣化或响应劣化）的发动机控制器能够以高精度检测劣化程度，并且可以优化A / F 比例反馈控制根据诊断结果。 该控制器包括用于计算从A / F比调整单元到A / F比传感器的范围内的频率响应特性的单元，并且基于增益特性和由A / F比传感器给出的响应特性来诊断A / F比传感器 计算频率响应特性。 根据诊断结果，优化了A / F比反馈控制（PI控制）中使用的参数（P-和I-分量增益）。
-
公开(公告)号：US20050262828A1
公开(公告)日：2005-12-01
申请号：US11136533
申请日：2005-05-25
IPC分类号： F02D45/00 , B01D53/94 , F01N3/20 , F01N3/24 , F01N3/28 , F02D41/04 , F02D41/14 , F02D41/36 , F01N3/00 , F01N7/00
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
-
公开(公告)号：US20080028828A1
公开(公告)日：2008-02-07
申请号：US11830130
申请日：2007-07-30
IPC分类号： G01N7/00
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
-
公开(公告)号：US07549284B2
公开(公告)日：2009-06-23
申请号：US11830130
申请日：2007-07-30
IPC分类号： F01N3/00
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
-
公开(公告)号：US07266942B2
公开(公告)日：2007-09-11
申请号：US11136533
申请日：2005-05-25
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
-
公开(公告)号：US08108094B2
公开(公告)日：2012-01-31
申请号：US11945604
申请日：2007-11-27
IPC分类号： G01M17/00
CPC分类号： F02D41/22 , F02D35/023 , F02D35/024 , F02D41/0045 , F02D41/0072 , F02D2041/1433 , F02D2200/1006 , G01M15/042
摘要： Any anomaly in energy transfer is appropriately diagnosed in a vehicle. The energy transfer system of a vehicle is provided with: an input energy computation means (e.g., the chemical energy of fuel computation means) for determining the input energy of the energy transfer system; an output energy computation means (e.g., the vehicle kinetic energy computation means) for determining the energy output of the energy transfer system; and a comparing means (e.g., the comparing means) for comparing the input energy with the output energy. Any anomaly in the energy transfer system (e.g., any anomaly in fuel efficiency) is determined based on the result of comparison by the comparing means.
摘要翻译： 能量转移的任何异常在车辆中得到适当诊断。 车辆的能量传递系统具有：用于确定能量传递系统的输入能量的输入能量计算装置（例如燃料计算装置的化学能）; 用于确定能量传递系统的能量输出的输出能量计算装置（例如，车辆动能计算装置）; 以及用于将输入能量与输出能量进行比较的比较装置（例如比较装置）。 基于比较装置的比较结果，确定能量传递系统中的任何异常（例如燃料效率的任何异常）。
-
公开(公告)号：US20090265086A1
公开(公告)日：2009-10-22
申请号：US12425033
申请日：2009-04-16
CPC分类号： F02D41/064 , F02D41/22 , F02D2200/023 , Y02T10/40
摘要： A diagnosis apparatus for an internal combustion engine equipped with a cold start emission reduction strategy unit, includes: a temperature measuring unit for detecting a temperature of coolant of the internal combustion engine; a temperature estimating unit for calculating an estimated temperature of the coolant in accordance with a running state of the internal combustion engine; and a cold start emission reduction strategy abnormality judging unit for judging abnormality of the cold start emission reduction strategy unit in accordance with the temperature detected with the coolant temperature measuring means and the estimated temperature.
摘要翻译： 一种配备有冷启动排放减少策略单元的内燃机的诊断装置，包括：温度测量单元，用于检测内燃机的冷却剂的温度; 温度估计单元，用于根据内燃机的运行状态计算冷却剂的估计温度; 以及冷启动排放减少策略异常判定单元，用于根据由冷却剂温度测量装置检测到的温度和估计温度来判断冷启动排放减少策略单元的异常。
-
公开(公告)号：US20090205413A1
公开(公告)日：2009-08-20
申请号：US12353537
申请日：2009-01-14
IPC分类号： G01M15/04
CPC分类号： F02M65/003
摘要： A diagnostic apparatus is combined with a high-pressure fuel supply system including a high-pressure fuel pump, a fuel rail, injectors, and a fuel pressure measuring unit for measuring fuel pressure in the fuel rail. The diagnostic apparatus is capable of detecting troubles in the high-pressure fuel pump and injectors and of discriminating between a trouble in the high-pressure fuel pump and a trouble in the injectors includes. The diagnostic apparatus includes: a pump discharge component calculating unit 111 for determining fuel pressure variation synchronous with the operation of the high-pressure fuel pump from the fuel pressure, an injection component calculating unit 112 for determining fuel pressure variation synchronous with the operation of the injectors, a rotating speed component calculating unit 113 for determining fuel pressure variation synchronous with the rotation of a drive shaft for driving the high-pressure fuel pump, a control component calculating unit 114 for determining fuel variation during a control operation for adjusting the fuel pressure to a predetermined desired fuel pressure, and a direct current component calculating unit 115 for calculating a direct current component of fuel pressure variation. The diagnostic apparatus decides whether or not the high-pressure fuel system is malfunctioning on the basis of results of calculation made by those calculating units.
摘要翻译： 诊断装置与包括用于测量燃料轨道中的燃料压力的高压燃料泵，燃料轨，喷射器和燃料压力测量单元的高压燃料供应系统组合。 诊断装置能够检测高压燃料泵和喷射器中的故障，并且识别高压燃料泵中的故障和喷射器中的故障包括。 诊断装置包括：用于根据燃料压力确定与高压燃料泵的运行同步的燃料压力变化的泵排出分量计算单元111，用于确定与燃料压力变化同步的燃料压力变化的喷射分量计算单元112 喷射器，用于确定与用于驱动高压燃料泵的驱动轴的旋转同步的燃料压力变化的转速分量计算单元113，用于在用于调节燃料压力的控制操作期间确定燃料变化的控制部件计算单元114 以及用于计算燃料压力变化的直流分量的直流分量计算单元115。 诊断装置基于这些计算单元的计算结果，判定高压燃料系统是否发生故障。
-
-
-
-
-
-
-
-
-
搜索结果
96 条记录 (耗时 0.027 秒)
