公开(公告)号：US08260576B2

公开(公告)日：2012-09-04

申请号：US13287460

申请日：2011-11-02

申请人： Yasushi Iwazaki ,  Hiroshi Sawada ,  Takahiro Joko ,  Masaya Kawaji

发明人： Yasushi Iwazaki ,  Hiroshi Sawada ,  Takahiro Joko ,  Masaya Kawaji

IPC分类号： G06F11/30

CPC分类号： G01N27/4175 ,  F02D41/1454 ,  F02D41/222

摘要： An exhaust gas sensor abnormality diagnostic device includes an exhaust gas sensor, and a judgment means that judges whether execution conditions are established for making an abnormality diagnosis of element breakage in the exhaust gas sensor. The device also includes an abnormality diagnosis means that makes the abnormality diagnosis in accordance with an output signal generated by the exhaust gas sensor. Further, when the integrated value of intake air amounts of an internal combustion engine is not smaller than a predetermined value, the judgment means judges that the execution conditions are established. The abnormality diagnosis means cancels the establishment of the execution conditions when an intake air amount of the internal combustion engine remains less than a predetermined value for a predetermined period of time.

公开(公告)号：US20060277971A1

公开(公告)日：2006-12-14

申请号：US11448794

申请日：2006-06-08

申请人： Kenji Tashiro ,  Yasushi Iwazaki ,  Masanobu Kanamaru ,  Hiroshi Sawada ,  Masaya Kawaji ,  Takashi Matsui

发明人： Kenji Tashiro ,  Yasushi Iwazaki ,  Masanobu Kanamaru ,  Hiroshi Sawada ,  Masaya Kawaji ,  Takashi Matsui

IPC分类号： G01N33/00

CPC分类号： G01N27/4065

摘要： An air-fuel ratio sensor that outputs a sensor signal used for the feedback control of an air-fuel ratio is provided. It is determined whether an element crack is present by applying a reverse voltage to the air-fuel ratio sensor. The value of the sensor signal output from the air-fuel ratio sensor is corrected during a time period “A”. The time period “A” consists of a reverse-voltage application time period in which the reverse voltage is applied, and a return time period “T” after application of the reverse voltage ends. The return time period “T” is set based on sensor impedance correlated with the internal resistance of the air-fuel ratio sensor. The return time period “T” decreases as the sensor impedance decreases.

摘要翻译： 提供输出用于空燃比的反馈控制的传感器信号的空燃比传感器。 通过向空燃比传感器施加反向电压来确定是否存在元件裂纹。 在空燃比传感器输出的传感器信号的值在时间段“A”期间被校正。 时间段“A”包括施加反向电压的反向电压施加时间段，反向电压施加后的返回时间段“T”结束。 基于与空燃比传感器的内阻相关的传感器阻抗来设定返回时间段“T”。 返回时间段“T”随着传感器阻抗的减小而减小。

公开(公告)号：US20130336841A1

公开(公告)日：2013-12-19

申请号：US14002894

申请日：2011-03-03

申请人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

发明人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

IPC分类号： G01N33/00

CPC分类号： G01N33/0054 ,  F01N3/206 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2610/03 ,  F01N2900/0408 ,  F01N2900/1402 ,  Y02T10/47

摘要： The determination of deterioration of a NOx storage reduction catalyst (4) is carried out more accurately. When a reducing agent is supplied from a supply device (5) to the NOx catalyst (4), a first supply of the reducing agent and a second supply of the reducing agent are carried out in a sequential manner by adjusting an amount of the reducing agent in such a manner that an air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination whether or not the NOx catalyst (4) has deteriorated is made based on a detected value of a detection device (8), which detects NH3 in the exhaust gas at the downstream side of the NOx catalyst (4), after a predetermined period of time has elapsed from the start of the first supply of the reducing agent, and after the start of the second supply of the reducing agent.

摘要翻译： 进一步精确地确定NOx储存还原催化剂（4）的劣化。 当从供给装置（5）向NOx催化剂（4）供给还原剂时，通过调节还原剂的量来顺序地进行还原剂的第一次供给和还原剂的第二供给 以使得排气的空燃比成为规定的浓空燃比，并且基于检测装置（8）的检测值来判定NOx催化剂（4）是否劣化， ，其在从所述还原剂的第一次供给开始经过预定时间后，在所述NOx催化剂（4）的下游侧的废气中检测NH 3，并且在所述第二次供给所述NOx催化剂 还原剂。

公开(公告)号：US20130199163A1

公开(公告)日：2013-08-08

申请号：US13140293

申请日：2010-10-25

申请人： Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

发明人： Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

IPC分类号： F01N3/10

CPC分类号： F01N9/00 ,  F01N3/0842 ,  F01N3/10 ,  F01N3/101 ,  F01N13/009 ,  F01N2570/14 ,  F01N2900/1602 ,  F02D19/0613 ,  F02D19/0615 ,  F02D19/0647 ,  F02D19/0692 ,  F02D19/081 ,  F02D19/084 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/0255 ,  F02D2200/0802 ,  Y02T10/22 ,  Y02T10/36

摘要： In a fuel injection system of an internal combustion engine in which a first fuel, which has a property to inhibit the adsorption of exhaust gas components by an exhaust gas purification catalyst, and the second fuel, which has a property not to inhibit the adsorption of the exhaust gas components by the exhaust gas purification catalyst, are able to be selectively used, the present invention has a task to decrease an amount of consumption of the second fuel in a suitable manner. In order to solve this task, the fuel injection system of an internal combustion engine according the present invention is constructed such that the second fuel is first supplied to the internal combustion engine when the exhaust gas purification catalyst is in a cold state, and a change from the second fuel to the first fuel is then made before the exhaust gas purification catalyst subsequently rises in temperature to an activation temperature thereof.

摘要翻译： 在内燃机的燃料喷射系统中，具有抑制排气净化催化剂吸附废气成分的特性的第一燃料和具有不抑制吸附的废气的第二燃料 排气净化催化剂的废气成分能够选择性地使用，本发明的任务是以合适的方式减少第二燃料的消耗量。 为了解决这个任务，本发明的内燃机的燃料喷射系统构成为，当排气净化催化剂处于冷态时，第一燃料首先供给到内燃机， 然后在废气净化催化剂随后在温度升高至其活化温度之前，从第二燃料到第一燃料。

公开(公告)号：US08806928B2

公开(公告)日：2014-08-19

申请号：US13695372

申请日：2010-04-30

申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

IPC分类号： G01M15/10

CPC分类号： G01M15/10 ,  F01N11/002 ,  F01N2550/02 ,  Y02T10/47

摘要： Provision is made for a catalyst that is arranged in an exhaust passage of an internal combustion engine and has an oxidation function, downstream side temperature detection means that detects the temperature of an exhaust gas at a downstream side from the catalyst, and addition means that adds a reducing agent into the exhaust gas from an upstream side from the catalyst, wherein there are also provided correlation value calculation means that calculates a correlation value which is correlated with an amount of change of the temperature detected by the downstream side temperature detection means when the reducing agent is added by the addition means and when a transient operation of the internal combustion engine is carried out, and determination means that determines a deterioration of the catalyst by making a comparison between the correlation value and a threshold value which indicates the deterioration of the catalyst.

摘要翻译： 设置有布置在内燃机的排气通道中并具有氧化功能的催化剂，下游侧温度检测装置，其检测催化剂下游侧的废气的温度，以及添加装置 还原剂从催化剂的上游侧排入废气中，其中还提供相关值计算装置，其计算与当下游侧温度检测装置检测到的温度的变化量相关的相关值时 通过加法装置添加还原剂，并且当进行内燃机的瞬时运转时，以及通过比较相关值和指示劣化的阈值来确定催化剂的劣化的确定装置 催化剂。

公开(公告)号：US20140003999A1

公开(公告)日：2014-01-02

申请号：US14006250

申请日：2011-03-22

申请人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

发明人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

IPC分类号： G01N31/10

CPC分类号： G01N31/10 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/021 ,  Y02T10/47

摘要： An accurate determination of deterioration of a NOx storage reduction catalyst. A supply device supplies a reducing agent to the NOx catalyst to change an air fuel ratio of an exhaust gas passing through the NOx catalyst, an NH3 detection device detects NH3 in the exhaust gas at the downstream side of the NOx catalyst, a control device adjusts an amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination device makes a determination that the NOx catalyst has deteriorated, when a detected value of the NH3 detection device becomes equal to or greater than a threshold value, at the time of supplying the reducing agent while adjusting the amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes the predetermined rich air fuel ratio.

摘要翻译： 精确测定NOx储存还原催化剂的劣化。 供给装置向NO x催化剂供给还原剂以改变通过NOx催化剂的废气的空燃比，NH 3检测装置检测NOx催化剂下游侧的废气中的NH 3，控制装置调整 一定量的还原剂使得排气的空燃比成为预定的浓空燃比，并且当NH 3检测装置的检测值变为等于1时，确定装置判定为NOx催化剂已劣化 或大于阈值，同时在调节还原剂的量的同时供给还原剂，使得排气的空燃比成为预定的浓空燃比。

公开(公告)号：US08346462B2

公开(公告)日：2013-01-01

申请号：US12677194

申请日：2009-08-28

申请人： Yoshitaka Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Shinya Taira

发明人： Yoshitaka Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Shinya Taira

IPC分类号： G06F19/00 ,  F02M25/07 ,  F02B47/08 ,  F02B33/44 ,  G01M15/00

CPC分类号： F02D41/0052 ,  F02B29/0406 ,  F02D41/0065 ,  F02D41/18 ,  F02M26/05 ,  F02M26/06 ,  F02M26/10 ,  F02M26/15 ,  F02M26/23 ,  F02M26/48 ,  F02M26/49 ,  Y02T10/47

摘要： A determination is made more simply as to a malfunction of a low pressure EGR device that supplies an EGR gas from a low pressure EGR passage connecting between an exhaust passage at a location downstream of a turbine and an intake passage. Provision is made for a high pressure EGR device that connects between the exhaust passage at a location upstream of the turbine and the intake passage, the low pressure EGR device that connects between the exhaust passage at a location downstream of the turbine and the intake passage, and a detection unit that detects a malfunction of the low pressure EGR device from the degree of opening of a high pressure EGR valve at the time when the EGR gas is supplied from both the high pressure EGR device and the low pressure EGR device, and at the time when the high pressure EGR valve of the high pressure EGR device is controlled in a feedback manner so as to direct an amount of EGR gas in a cylinder toward a target range of the amount of EGR gas, while carrying out open loop control of a low pressure EGR valve of the low pressure EGR device.

摘要翻译： 更简单地确定从连接在涡轮机下游的排气通道和进气通道之间的低压EGR通道供应EGR气体的低压EGR装置的故障。 对于在涡轮机上游的排气通道和进气通道之间连接的高压EGR装置，连接在涡轮机下游的排气通道和进气通道之间的低压EGR装置， 以及检测单元，其从在从高压EGR装置和低压EGR装置供给EGR气体时，从高压EGR阀的开度开始，检测低压EGR装置的故障， 以反馈方式控制高压EGR装置的高压EGR阀的时间，以便将EGR气体中的EGR气体的量朝向EGR气体的量的目标范围引导，同时进行开环控制 低压EGR装置的低压EGR阀。

公开(公告)号：US08656700B2

公开(公告)日：2014-02-25

申请号：US13125746

申请日：2010-10-22

申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

IPC分类号： F01N3/00 ,  F01N3/02

CPC分类号： F01N3/021 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/0418 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1411 ,  Y02T10/20 ,  Y02T10/47

摘要： A failure of a filter is detected with a higher degree of accuracy. There are provided a filter that is arranged on an exhaust passage of an internal combustion engine for collecting a substance contained in an exhaust gas, a substance amount detection part that is arranged on the exhaust passage at a downstream side of the filter for detecting an amount of substance in the exhaust gas, a flow speed detection part that detects or estimates a flow speed of the exhaust gas which passes through the filter, and a determination part that makes a determination that the filter is in a failure, when the higher the flow speed of the exhaust gas passing through the filter, the larger a ratio of an amount of change in the amount of substance to an amount of change in the flow speed of the exhaust gas becomes.

摘要翻译： 以更高的准确度检测滤波器的故障。 本发明提供一种过滤器，其设置在内燃机的排气通路上，用于收集废气中所含的物质，物质量检测部，其布置在过滤器的下游侧的排气通道上，用于检测废气量 废气中的物质的流量检测部，检测或估计通过过滤器的排气的流速的流量检测部以及判定为过滤器处于故障的判定部，流量越高 通过过滤器的废气的速度，物质量的变化量与排气的流速变化量的比例越大。

公开(公告)号：US20130014641A1

公开(公告)日：2013-01-17

申请号：US13637586

申请日：2010-03-26

申请人： Kazuya Takaoka ,  Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro

发明人： Kazuya Takaoka ,  Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro

IPC分类号： B01D29/62

CPC分类号： F01N11/002 ,  F01N3/0253 ,  F01N3/035 ,  F01N9/002 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/0408 ,  F01N2900/0412 ,  F01N2900/0601 ,  F01N2900/1606 ,  F02D41/1466 ,  F02D41/1467 ,  F02D2200/0812 ,  Y02T10/47

摘要： The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.

摘要翻译： 本发明旨在以更高的精度检测PM滤波器的故障。 本发明提供了一种PM捕集效率计算部，其基于所获得的流入粒子物质的量，计算PM捕集效率（其相对于流入粒子物质的量捕获的颗粒物质的量的比例） 通过流入颗粒物获取部分和由PM传感器检测的流出颗粒物质的量; 以及故障检测部，在PM滤波器中发生故障发生的判定的情况下，在直到执行以下的滤波再生处理开始之前，PM捕集效率在一段时间内降低的趋势的情况下 完成执行过滤器再生处理。

公开(公告)号：US20100257922A1

公开(公告)日：2010-10-14

申请号：US12747409

申请日：2008-06-11

申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro

发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro

IPC分类号： G01M15/10

CPC分类号： F01N3/208 ,  F01N11/005 ,  F01N2550/02 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

摘要： An abnormality diagnosis apparatus for an NOx catalyst of the present invention measures an index value (R) regarding an NOx clarification capacity of an NOx catalyst and determines an abnormality of the NOx catalyst based on index values (R1, R2) respectively measured at a timing (Tc1) at which the NOx catalyst has a relatively-low activation level and a timing (Tc2) at which the NOx catalyst has a relatively-high activation level. Since the index value at the timing at which the NOx catalyst has a relatively-low activation level (i.e., a timing at which the NOx catalyst originally does not have a sufficient NOx clarification capacity) is used, the abnormality diagnosis for the NOx catalyst can be carried out without intentionally deteriorating emission.

摘要翻译： 本发明的NOx催化剂的异常诊断装置测定关于NOx催化剂的NOx澄清能力的指标值（R），并且基于在时刻分别测定的指标值（R1，R2），判定NOx催化剂的异常 （Tc1），其中NOx催化剂具有相对低的活化水平和NOx催化剂具有相对高的活化水平的定时（Tc2）。 由于使用NOx催化剂具有相对低的活化水平（即，NOx催化剂原本不具有足够的NOx澄清容量的时间）的定时的指标值，因此NOx催化剂的异常诊断 不会意图恶化排放。