公开(公告)号：JP2013253588A

公开(公告)日：2013-12-19

申请号：JP2012131166

申请日：2012-06-08

Applicant: TOYOTA MOTOR CORP

Inventor： TAWARA ATSUSHI

IPC: F02D45/00

Abstract: PROBLEM TO BE SOLVED: To suppress, at the abnormality of a crank position sensor and when a crank angle is ascertained using a cam position sensor, deviation of the ascertained crank angle from an actual crank angle to a delay side with an increase in engine rotating speed.SOLUTION: In ascertaining a crank angle utilizing a cam position sensor 14, the ascertained crank angle deviates from an actual crank angle to a delay side with an increase in engine rotating speed. Accordingly, when an actual number of times when the crank signal reaches an estimated output timing in an edge interval is short relative to a scheduled number of crank signals output in the edge interval of a cam signal, an estimated value of a time interval of crank signal output timings is reduced by an amount corresponding to this shortage. As a result, the output timing of the crank angle estimated by using an estimated value is advanced and the crank angle is ascertained based on the output timing, by which the ascertained crank angle changes to an advancing side.

公开(公告)号：JP2011094570A

公开(公告)日：2011-05-12

申请号：JP2009251031

申请日：2009-10-30

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAWARA ATSUSHI

IPC: F01N3/02 ,  F02D9/04

Abstract: PROBLEM TO BE SOLVED: To suppress erroneous diagnosis of a clogging abnormality of a filter. SOLUTION: An exhaust passage 14 of an internal combustion engine 10 is provided with a filter 22 collecting PM and an exhaust throttle valve 18 arranged in this order from upstream of the exhaust passage 14. A pressure sensor 33 detecting exhaust pressure Pex is disposed upstream of the filter 22 of the exhaust passage 14. An electronic control device 40 controls open/close of the exhaust throttle valve 18, and diagnoses the clogging abnormality of the filter 22 based on the exhaust pressure Pex detected by the pressure sensor 33. Based on an engine operating condition, a determination value Pexth, which is exhaust pressure upstream of the exhaust throttle valve 18 of the exhaust passage 14, larger than pressure of the fully opened valve 18, and smaller than pressure of the fully closed valve 18, is set. The abnormality diagnosis is prohibited when it is determined that the exhaust pressure Pex is larger than the determination value Pexth, before execution of abnormality diagnosis of the filter 22. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：抑制过滤器堵塞异常的错误诊断。 解决方案：内燃机10的排气通道14设置有收集PM的过滤器22和从排气通道14的上游依次排列的排气节流阀18.检测排气压力Pex的压力传感器33是 设置在排气通道14的过滤器22的上游。电子控制装置40控制排气节流阀18的打开/关闭，并且基于由压力传感器33检测的排气压力Pex来诊断过滤器22的堵塞异常。 基于发动机工作状态，作为排气通路14的排气节流阀18上游排气压力的判定值Pexth大于全开阀18的压力，小于全闭阀18的压力， 被设置。 在执行过滤器22的异常诊断之前，当确定排气压力Pex大于确定值Pexth时，禁止异常诊断。（C）2011，JPO和INPIT

公开(公告)号：JP2007321614A

公开(公告)日：2007-12-13

申请号：JP2006151343

申请日：2006-05-31

Applicant: Toyota Industries Corp ,  Toyota Motor Corp ,  トヨタ自動車株式会社 ,  株式会社豊田自動織機

Inventor： TAWARA ATSUSHI ,  YAMAMOTO YUKIHISA

IPC: F01N3/36 ,  B01D53/94 ,  F02D45/00

CPC classification number: F02D41/0275 ,  F01N3/025

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine capable of adding a proper quantity of unburnt fuel component to a catalyst in fuel adding control. SOLUTION: An electronic control device estimates the catalyst bed temperature from a detecting value of the exhaust temperature (Step S210), and calculates the switching air volume for determining the necessity of correcting an adding quantity (Step S220). A determination is made on whether or not the detected actual air volume of suction air is larger than the switching air volume (Step S240). When the actual air volume exceeds the switching air volume, since a determination can be made that an operation state of the internal combustion engine is put in a white smoke easily generating state, a correction is made for reducing the adding quantity of fuel added from an adding valve (Step S260). COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在燃料添加控制中向催化剂添加适量的未燃燃料成分的内燃机的废气排放控制装置。 解决方案：电子控制装置从排气温度的检测值估计催化剂床温度（步骤S210），并计算用于确定校正添加量的必要性的开关风量（步骤S220）。 确定所检测到的吸入空气的实际空气量是否大于开关风量（步骤S240）。 当实际风量超过切换风量时，由于能够确定内燃机的运转状态为白烟容易产生状态，因此进行校正，以减少从燃料添加量 加入阀（步骤S260）。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007127022A

公开(公告)日：2007-05-24

申请号：JP2005319498

申请日：2005-11-02

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MATSUNO SHIGEHIRO ,  TAWARA ATSUSHI

IPC: F01N3/20 ,  B01D53/94 ,  F01N3/08 ,  F01N3/36

CPC classification number: B01D53/9409 ,  B01D53/9495 ,  B01D2251/208 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0885 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/1441 ,  F02D2041/0265 ,  F02D2200/0802 ,  F02M26/15 ,  F02M26/23 ,  F02M26/35

Abstract: PROBLEM TO BE SOLVED: To suppress the occurrence of white smoke in exhaust gases by the excessive supply of unburned fuel components into an NOx catalyst when sulfur (S) poisoning recovery control is performed. SOLUTION: In the adding period A of the sulfur (S) poisoning recovery control, an adding time a for adding a fuel to an exhaust system is limited to a guard value G or less. Therefore, the added amount of fuel per unit time during the adding period A can be limited to an allowable upper limit value Q1 max or below, and it can be suppressed that the unburned fuel components are not purified by the NOx catalyst during the adding period A. After the adding time A is started, when the overall amount [(GF+Q1)×t] of the unburned fuel components fed to the NOx catalyst reaches an allowable upper limit value UL, a concentrated intermittent fuel addition in the adding period A is stopped and the period A is forcibly moved to a rest period B. Consequently, it can be suppressed that the overall amount [(GF+Q1)×t] of the unburned fuel components fed to the NOx catalyst is increased such that the unburned fuel components cannot be purified by the NOx catalyst during the adding period A. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了抑制当执行硫（S）中毒恢复控制时，通过过量地将未燃烧的燃料成分供应到NOx催化剂中来抑制废气中的白烟的发生。 解决方案：在硫（S）中毒恢复控制的添加周期A中，将用于向排气系统添加燃料的添加时间a限制在保护值G以下。 因此，在添加期间A中，每单位时间的燃料添加量可以限制在允许上限值Q1 max以下，并且可以抑制未加燃料成分在添加期间不被NOx催化剂净化 A.开始添加时间A后，当供给到NOx催化剂的未燃燃料成分的总量[（GF + Q1）×t]达到允许上限值UL时，加法时间内的浓缩间歇燃料添加 A停止，时段A被强制地移动到休止期B.因此，可以抑制供给到NOx催化剂的未燃燃料成分的总量[（GF + Q1）×t]增大， 未加燃料组分在添加期间A期间不能被NOx催化剂净化。版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007064183A

公开(公告)日：2007-03-15

申请号：JP2005255138

申请日：2005-09-02

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAWARA ATSUSHI ,  KOBAYASHI MASAAKI

IPC: F01N3/36 ,  B01D53/86 ,  B01D53/94 ,  F01N3/02 ,  F01N3/20 ,  F02D45/00

CPC classification number: B01D53/9495 ,  B01D53/9445 ,  B01D2251/208 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/106 ,  F01N9/00 ,  F01N11/002 ,  F01N13/0097 ,  F01N2250/02 ,  F01N2250/14 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/1493 ,  F01N2900/1811 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/22 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To restrain the clogging of a fuel adding valve for adding fuel to an exhaust passage even if the exhaust temperature of an internal combustion engine changes by an environmental change such as an atmospheric pressure change. SOLUTION: A correction is made so as to shorten an adding interval of the fuel (Step ST1 to ST4) as a variation in its exhaust temperature becomes large on the basis of a variation in the present exhaust temperature to the basis exhaust temperature when setting a basic adding interval. When the exhaust temperature rises in highland by such a correction of the adding interval, the adding interval of the fuel is shortened and corrected in response to its exhaust temperature rise, and since an adding quantity of the fuel is increasingly corrected, a temperature rise in a tip part of the fuel adding valve can be restrained, to thereby avoid the problem of blocking up a nozzle port of the fuel adding valve by a deposit. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：即使内燃机的排气温度变化等大气压变化的环境变化，也可以抑制用于将燃料添加到排气通道的燃料添加阀的堵塞。 解决方案：基于当前排气温度与基本排气温度的变化，进行校正以缩短燃料的添加间隔（步骤ST1至ST4），因为排气温度的变化变大 设置基本的添加间隔时。 当排气温度通过这样的加法间隔的校正而升高时，由于排气温度升高，燃料的添加间隔被缩短和校正，并且由于燃料的添加量越来越多地被校正，因此， 可以抑制燃料添加阀的前端部，从而避免了通过沉积物堵塞燃料添加阀的喷嘴端口的问题。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006291830A

公开(公告)日：2006-10-26

申请号：JP2005112857

申请日：2005-04-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAWARA ATSUSHI ,  YASUZAKI ICHIJI

IPC: F02B37/24 ,  F02D23/00

CPC classification number: Y02T10/144

Abstract: PROBLEM TO BE SOLVED: To provide a turbocharger control device for properly controlling the drive of a variable nozzle mechanism for a turbocharger even when a combustion mode in an internal combustion engine is changed over. SOLUTION: In the engine 1, the combustion mode is changed over to maintain the function of an exhaust emission control device 30. The control device 25 controls the drive of a variable nozzle mechanism 71 so that the charging pressure of the turbocharger 60 having the variable nozzle mechanism 71 for changing the exhaust flow path area of an exhaust flow-in part gets to target charging pressure. The control device 25 sets the basic drive amount of the variable nozzle mechanism 71 in accordance with the target charging pressure and the corrects the basic drive amount with a feedback correction amount calculated in accordance with a deviation between actual charging pressure and the target charging pressure. It also changes the feedback correction amount along with the change-over of the combustion mode. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：即使当内燃机的燃烧模式被切换时，也可以提供一种用于适当地控制用于涡轮增压器的可变喷嘴机构的驱动的涡轮增压器控制装置。 解决方案：在发动机1中，改变燃烧模式以维持排气控制装置30的功能。控制装置25控制可变喷嘴机构71的驱动，使得涡轮增压器60的充气压力 具有用于改变排气流入部的排气流路面积的可变喷嘴机构71成为目标充气压力。 控制装置25根据目标充气压力设定可变喷嘴机构71的基本驱动量，并且根据实际充气压力和目标充气压力之间的偏差计算出的反馈校正量来校正基本驱动量。 它也随着燃烧模式的转换而改变反馈校正量。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006291826A

公开(公告)日：2006-10-26

申请号：JP2005112852

申请日：2005-04-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAWARA ATSUSHI

IPC: F02D41/16 ,  F01N3/02 ,  F01N3/24 ,  F02D29/04 ,  F02D29/06 ,  F02D45/00

CPC classification number: Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide a controller of an internal combustion engine capable of suppressing the deterioration of fuel economy due to the continued control of the increasing temperature of a catalyst over a long period by rapidly completing the regeneration of the filter even under such a condition that idle operation is frequently performed under the control of the increasing temperature of the catalyst for regenerating the filter. SOLUTION: When the idle operation is frequently performed under the control of the increasing temperature of the catalyst for regenerating the filter and a catalyst floor temperature becomes difficult to rise, the burning of PM deposited in an exhaust system is not advanced and it takes much time for the filter to be regenerated and the fuel economy of the internal combustion engine 10 may be deteriorated. However, when the deposited amount of PM is determined to be increased during the control of the increasing temperature of the catalyst, an exhaust temperature raising control is performed for raising exhaust gas temperatures during the idle operation of the internal combustion engine 10. By the execution of that control. the catalyst floor temperature can be held at a high value even under the idle operation, and a time for completing the regeneration of the filter is reduced, and further the deterioration of the fuel economy of the internal combustion engine 10 can be suppressed. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种内燃机的控制器，其能够通过快速完成过滤器的再生而连续控制催化剂在长时间内的温度的持续控制，从而抑制燃料经济性的劣化 在用于再生过滤器的催化剂的升高温度的控制下经常进行空转操作的条件下进行。 解决方案：当在用于再生过滤器的催化剂的升高温度的控制下频繁地执行怠速操作并且催化剂底板温度变得难以上升时，沉积在排气系统中的PM的燃烧不会提前， 需要花费大量时间来使过滤器再生，并且内燃机10的燃料经济性可能劣化。 然而，当在催化剂的升高温度的控制期间确定PM的沉积量增加时，在内燃机10的怠速运转期间执行用于提高排气温度的排气升温控制。通过执行 的控制。 即使在怠速运转时，也能够将催化剂底板温度保持在高的值，从而能够降低过滤器再生的时间，进而能够抑制内燃机10的燃料经济性的劣化。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006291825A

公开(公告)日：2006-10-26

申请号：JP2005112851

申请日：2005-04-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAWARA ATSUSHI ,  SUGIYAMA TATSUMASA

IPC: F01N3/02 ,  B01D46/42 ,  B01D53/94 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N3/36 ,  F01N13/02

CPC classification number: F01N3/0842 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0821 ,  F01N9/002 ,  F01N11/002 ,  F01N13/009 ,  F01N2550/03 ,  F01N2610/03 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine capable of suppressing the lowering of particulate matter purification capability at the upstream part of an exhaust filter when the catalytic function of a catalyst device is deteriorated. SOLUTION: This exhaust emission control device comprises a fuel addition valve 71, an NOx catalytic converter 72, and a catalyst carrying type PM filter 73. The PM arrested by the filter 73 is purified by increasing the temperature of the catalyst floor of the catalyst carrying type PM filter 73 to a target catalyst floor temperature. When the NOx catalytic converter 72 is deteriorated, the target catalyst floor temperature of the catalyst carrying type PM filter 73 is changed to a value larger than a target catalyst floor temperature when the NOx catalytic converter 72 is normal. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决的问题：提供一种能够抑制催化剂装置的催化功能恶化时排气过滤器的上游部分的颗粒物净化能力降低的内燃机的废气排放控制装置。 解决方案：该废气排放控制装置包括燃料添加阀71，NOx催化转化器72和催化剂负载型PM过滤器73.由过滤器73阻塞的PM通过增加催化剂底板的温度而被净化 催化剂载体型PM过滤器73达到目标催化剂底板温度。 当NOx催化转化器72恶化时，催化剂负载型PM过滤器73的目标催化剂底面温度被变化为当NOx催化转化器72正常时大于目标催化剂底板温度的值。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2005090253A

公开(公告)日：2005-04-07

申请号：JP2003321408

申请日：2003-09-12

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： KOBAYASHI NOBUKI ,  SUGIYAMA TATSUMASA ,  TAWARA ATSUSHI

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/00 ,  F01N3/20 ,  F01N3/28 ,  F01N3/36 ,  F02D41/02

CPC classification number: F02D41/028 ,  F02D2200/0611 ,  F02D2200/0818

Abstract: PROBLEM TO BE SOLVED: To prevent a large amount of HC from being released into the air, when SOx accumulated in a NOx catalyst is separated by SOx poisoning recovery control. SOLUTION: The exhaust emission control system for an internal combustion engine has the NOx catalyst occluding and reducing NOx in exhaust. When the SOx accumulated in the NOx catalyst is separated, concentration of sulfur in fuel is detected, an amount of the SOx accumulated in the NOx catalyst in addition to the concentration of the sulfur of the fuel is estimated, and an air-fuel ratio of the exhaust flowing into the NOx catalyst is set to an air-fuel ratio on a richer side according to reduction in estimated SOx accumulation amount. Accordingly, the HC concentration of exhaust flowing from the NOx catalyst becomes within an allowable HC concentration. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了防止大量HC被释放到空气中，当通过SOx中毒恢复控制分离在NOx催化剂中积聚的SO x时。 解决方案：用于内燃机的废气排放控制系统具有NOx催化剂吸留并减少排气中的NOx。 当NOx催化剂中累积的SO x分离时，检测到燃料中的硫浓度，除了燃料的硫浓度之外，还可以估计NOx催化剂中累积的SO x的量，空燃比 根据估计的SO x累积量的减少，流入NOx催化剂的排气被设定为更富裕侧的空燃比。 因此，从NOx催化剂流出的排气的HC浓度成为允许的HC浓度。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2003166415A

公开(公告)日：2003-06-13

申请号：JP2001366330

申请日：2001-11-30

Applicant: TOYOTA MOTOR CORP

Inventor： OTSUBO YASUHIKO ,  MATSUOKA HIROKI ,  SUGIYAMA TATSUMASA ,  AOYAMA TARO ,  ITO TAKEKAZU ,  TAWARA ATSUSHI

IPC: F02D45/00 ,  B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F02B37/00 ,  F02D41/00 ,  F02D41/02 ,  F02D41/40

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine which maintains the temperature of a catalyst in an adequate range when controlling decomposition and removal of SOx or the like deposited on a NOx catalyst in an exhaust system of the internal combustion engine. SOLUTION: An ECU 90 to collectively control a running condition of an engine 1 decomposes and emits SOx deposited on the NOx catalyst by performing the control to feed a large volume of fuel through a reducing agent applying valve 17 to the upstream side of the NOx catalyst in the exhaust system 40 while establishing a condition that the bed temperature of the NOx catalyst is maintained at 600°C or over. Based on the property of the NOx catalyst and the exhaust characteristic in performing the control, the optimum fuel feed and stop timing is set taking into consideration the responsiveness of the NOx catalyst bed temperature to the operation of the reducing agent applying valve 17. By constructing this control structure, the catalyst is reliably prevented from being excessively heated while efficiently emitting SOx deposited on the NOx catalyst. COPYRIGHT: (C)2003,JPO