公开(公告)号：US20110314792A1

公开(公告)日：2011-12-29

申请号：US12677277

申请日：2009-02-24

申请人： Daisuke Shibata ,  Koichi Kitaura ,  Hiroshi Sawada ,  Tatsuya Tsuji

发明人： Daisuke Shibata ,  Koichi Kitaura ,  Hiroshi Sawada ,  Tatsuya Tsuji

IPC分类号： F01N11/00

CPC分类号： F01N3/025 ,  F01N9/002 ,  F01N11/002 ,  F01N2550/04 ,  F01N2900/0601 ,  F01N2900/1606 ,  Y02T10/47

摘要： The invention intends to provide a technology which makes it possible to diagnose with higher accuracy whether or not abnormality occurs in a filter regeneration system causing excessive execution frequency of a regeneration process. The filter regeneration system initiates execution of the regeneration process, incase an estimated particulate matter (PM) accumulation amount at the filter reaches a pre-determined regeneration requiring accumulation amount; or in case the pressure upstream of the filter or the differential pressure across the filter reaches a pre-determined regeneration requiring value, the value being larger than the pressure or the differential pressure corresponding to the regeneration requiring accumulation amount. Then, the diagnosis is carried out based on a ratio of an estimated PM accumulation amount at the initiation of the execution of the regeneration process to the regeneration requiring accumulation amount.

摘要翻译： 本发明旨在提供一种能够以更高精度诊断导致再生处理的过度执行频率的过滤器再生系统中发生异常的技术。 过滤器再生系统启动再生处理的执行，使得在过滤器处的估计的颗粒物质（PM）累积量达到预定的再生需要累积量; 或者在过滤器上游的压力或过滤器上的压差达到预定的再生需求值的情况下，该值大于对应于再生需要累积量的压力或压差。 然后，基于再生处理开始时的估计PM积累量与再生需求累积量的比例进行诊断。

公开(公告)号：US08249794B2

公开(公告)日：2012-08-21

申请号：US13257842

申请日：2009-09-08

申请人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

发明人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

IPC分类号： B60T7/12

CPC分类号： F02D41/30 ,  F02D41/1495 ,  F02D41/221 ,  F02D2041/228 ,  Y02T10/40

摘要： When the intake air amount is smaller than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount increases in the condition that the base unit air-fuel ratio change amount is an upper limit and when the intake air amount is greater than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount decreases in the condition that the base unit air-fuel ratio change amount is a lower limit. When the corrected unit air-fuel ratio change amount is greater than the judgment value, it is judged that the inter-cylinder air-fuel ratio imbalance condition occurs.

摘要翻译： 当进气量小于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正为使得单位空燃比变化量在基本单位空气燃料 比例变化量为上限，当进气量大于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正，使得单位空燃比变化量在 条件是基本单位空燃比变化量是下限。 当校正单位空燃比变化量大于判定值时，判断为缸内空燃比不平衡状态发生。

公开(公告)号：US20120116651A1

公开(公告)日：2012-05-10

申请号：US13257842

申请日：2009-09-08

申请人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

发明人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

IPC分类号： F02D41/30

CPC分类号： F02D41/30 ,  F02D41/1495 ,  F02D41/221 ,  F02D2041/228 ,  Y02T10/40

摘要： When the intake air amount is smaller than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount increases in the condition that the base unit air-fuel ratio change amount is an upper limit and when the intake air amount is greater than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount decreases in the condition that the base unit air-fuel ratio change amount is a lower limit. When the corrected unit air-fuel ratio change amount is greater than the judgment value, it is judged that the inter-cylinder air-fuel ratio imbalance condition occurs.

摘要翻译： 当进气量小于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正为使得单位空燃比变化量在基本单位空气燃料 比例变化量为上限，当进气量大于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正，使得单位空燃比变化量在 条件是基本单位空燃比变化量是下限。 当校正单位空燃比变化量大于判定值时，判断为缸内空燃比不平衡状态发生。

公开(公告)号：US08359827B2

公开(公告)日：2013-01-29

申请号：US12677277

申请日：2009-02-24

申请人： Daisuke Shibata ,  Koichi Kitaura ,  Hiroshi Sawada ,  Tatsuya Tsuji

发明人： Daisuke Shibata ,  Koichi Kitaura ,  Hiroshi Sawada ,  Tatsuya Tsuji

IPC分类号： F01N3/00

CPC分类号： F01N3/025 ,  F01N9/002 ,  F01N11/002 ,  F01N2550/04 ,  F01N2900/0601 ,  F01N2900/1606 ,  Y02T10/47

摘要： The invention intends to provide a technology which makes it possible to diagnose with higher accuracy whether or not abnormality occurs in a filter regeneration system causing excessive execution frequency of a regeneration process. The filter regeneration system initiates execution of the regeneration process, incase an estimated particulate matter (PM) accumulation amount at the filter reaches a pre-determined regeneration requiring accumulation amount; or in case the pressure upstream of the filter or the differential pressure across the filter reaches a pre-determined regeneration requiring value, the value being larger than the pressure or the differential pressure corresponding to the regeneration requiring accumulation amount. Then, the diagnosis is carried out based on a ratio of an estimated PM accumulation amount at the initiation of the execution of the regeneration process to the regeneration requiring accumulation amount.

摘要翻译： 本发明旨在提供一种能够以更高精度诊断导致再生处理的过度执行频率的过滤器再生系统中发生异常的技术。 过滤器再生系统启动再生处理的执行，使得在过滤器处的估计的颗粒物质（PM）累积量达到预定的再生需要累积量; 或者在过滤器上游的压力或过滤器上的压差达到预定的再生需求值的情况下，该值大于对应于再生需要累积量的压力或压差。 然后，基于再生处理开始时的估计PM积累量与再生需求累积量的比例进行诊断。