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41.发明专利Excessive sulfur poisoning recovery control method and apparatus for exhaust emission control catalyst 有权用于排气控制催化剂的过硫磺消毒回收控制方法及装置
公开(公告)号：JP2005076505A
公开(公告)日：2005-03-24
申请号：JP2003306764
申请日：2003-08-29
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TAWARA ATSUSHI , SUGIYAMA TATSUMASA , KOBAYASHI NOBUKI
IPC: F02D45/00 , B01D53/86 , B01D53/94 , F01N3/02 , F01N3/023 , F01N3/025 , F01N3/029 , F01N3/035 , F01N3/08 , F01N3/18 , F01N3/20 , F01N3/24 , F01N13/02 , F02B37/00 , F02D41/02 , F02D41/04 , F02D41/14 , F02M25/07
CPC classification number: F01N13/0097 , F01N3/0253 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N3/0885 , F01N13/009 , F01N2570/04 , F01N2610/03 , F01N2900/1612 , F02B37/00 , F02D41/0245 , F02D41/028 , F02D41/029 , F02D41/1475 , F02M26/05 , F02M26/23 , F02M26/35 , F02M26/50 , Y02T10/26
Abstract: PROBLEM TO BE SOLVED: To prevent discharge of high-concentration sulfur components when sulfur poisoning amount of an exhaust emission control catalyst of an internal combustion engine becomes excessive. SOLUTION: When S components accumulate on the exhaust emission control catalyst, PM accumulation amount PMsm is increased and the frequency of lean-burn temperature increase treatment in PM regeneration control is increased (S102). As a result, the S components accumulated on the exhaust emission control catalyst are released by using the lean-burn temperature increase treatment in the PM regeneration control. Therefore, even when there is no chance to realize a sulfur poisoning recovery execution region and S poisoning becomes excessive, the lean-burn temperature increase treatment in the PM regeneration control can be performed in such a manner that excessive S components on the exhaust emission control catalyst can be released by this lean-burn temperature increase treatment. Since the S components released by the lean-burn temperature increase treatment is excessive part of the accumulated S components and the frequency of the lean-burn temperature increase treatment is high, the concentration of S components to be released can be suppressed. Accordingly, the problem is solved. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 待解决的问题：为了防止内燃机的废气排放控制催化剂的硫中毒量过多而排出高浓度的硫成分。 解决方案：当S组分累积在废气排放控制催化剂上时，PM堆积量PMsm增加，并且PM再生控制中的稀燃温度升高处理的频率增加（S102）。 结果，通过使用PM再生控制中的稀燃温度升高处理来释放累积在废气排放控制催化剂上的S成分。 因此，即使没有机会实现硫中毒恢复执行区域和S中毒过多，PM再生控制中的稀燃温度升高处理也可以以排气排放控制中的过量S成分 通过该稀燃温度升高处理可以释放催化剂。 由于通过稀燃温度升高处理而释放的S成分是积存的S成分的过多部分，稀燃温度升高处理的频率高，所以可以抑制要释放的S成分的浓度。 因此，解决了问题。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004324477A
公开(公告)日：2004-11-18
申请号：JP2003117904
申请日：2003-04-23
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： ISHIKAWA MASAHIKO , TSUZUKI MASAHITO , SUGIYAMA TATSUMASA , KOBAYASHI NOBUKI , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for accurately determining deterioration of a function of each element constituting an exhaust emission control system as failure, in the exhaust emission control system for an internal combustion engine provided with a catalyst having an oxidizing function in an upstream side of a NO X catalyst occluding and reducing NO X in exhaust gas, performing control to add fuel to the exhaust gas in accordance with the temperature of the exhaust gas. SOLUTION: In the exhaust emission control system for the internal combustion engine, difference in temperature between the temperature of the exhaust gas flowing out of the NO X catalyst and the temperature of the exhaust gas flowing in the NO X catalyst is detected or estimated. When an amount of fuel to be added in adding the fuel to the exhaust gas by the control for adding the fuel to the exhaust gas to make the temperature of the exhaust gas coincide with the prescribed temperature of the exhaust gas exceeds the prescribed amount to be added (S100) and the detected or estimated difference in temperature of the exhaust gas is not less than the prescribed temperature difference (S101), it is determined that the oxidizing function of the upstream exhaust emission control catalyst is deteriorated. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2003166439A
公开(公告)日：2003-06-13
申请号：JP2001367118
申请日：2001-11-30
Applicant: TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
Inventor： ITO TAKEKAZU , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI , OKI MAMORU , YOKOYAMA MASAKUNI , KUSAJI HIDESHI , MIZUGUCHI KEIICHI
Abstract: PROBLEM TO BE SOLVED: To provide an internal combustion engine provided with engine control technology capable of restricting pilot injection at low temperature combustion period and suppressing the occurrence of combustion noise caused by the inhibition of pilot injection. SOLUTION: This internal combustion engine 1 can switch low temperature combustion for operating the engine by burning intake gas having high EGR rate and ordinary combustion for operating the engine by burning intake gas having low EGR rate during the operation of the engine. In the internal combustion engine 1, pilot injection is performed in addition to main fuel injection. Furthermore, pilot injection is restricted during the operation of the engine by switching to low temperature combustion. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003166433A
公开(公告)日：2003-06-13
申请号：JP2001366091
申请日：2001-11-30
Applicant: TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
Inventor： SUGIYAMA TATSUMASA , MATSUOKA HIROKI , AOYAMA TARO , OTSUBO YASUHIKO , ITO TAKEKAZU , TAWARA ATSUSHI , TARUSAWA YUKI , MIZUGUCHI KEIICHI , NARITA YUJI
Abstract: PROBLEM TO BE SOLVED: To provide technology for stabilizing a combustion condition when combustion is performed at a low temperature in an internal combustion engine. SOLUTION: This internal combustion engine is provided with an internal combustion engine 1, a fuel supply means 3 for supplying fuel to each cylinder 2 of the internal combustion engine 1, an EGR device 26, a combustion condition switching means 35 for selecting either of low temperature combustion for increasing an EGR gas amount further after an amount of recirculating EGR gas is increased and a generation amount of soot is increased and becomes the maximum and ordinary combustion for recirculating an amount of EGR gas smaller than the amount of EGR gas at which the generation amount of soot becomes the maximum and switching these combustion conditions, and a fuel correcting means 35 for determining correction values of respective fuel supply amounts in low temperature combustion and ordinary combustion per cylinder 2. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003166411A
公开(公告)日：2003-06-13
申请号：JP2001364466
申请日：2001-11-29
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , ITO TAKEKAZU , TAWARA ATSUSHI
IPC: F02D9/02 , B01D39/14 , B01D46/24 , B01D46/44 , B01D53/94 , F01N3/02 , F01N3/24 , F02D41/38 , F02D45/00
Abstract: PROBLEM TO BE SOLVED: To provide a technology which correctly determines the clogging degree of a trapping mechanism in an exhaust emission control device of an internal combustion engine having the trapping mechanism to trap particulate such as soot containing in the exhaust emission. SOLUTION: In the exhaust emission control device of the internal combustion engine having a trapping mechanism to trap particulate containing in the exhaust emission, the clogging degree of the trapping mechanism is correctly determined without being affected by the change in the exhaust emission flow rate flowing into the trapping mechanism, variance of a sensor, etc., by determining the clogging degree of the trapping mechanism with the ratio of increasing the differential pressure before and behind the trapping mechanism to the increase of the exhaust emission flow rate into the trapping mechanism. COPYRIGHT: (C)2003,JPO
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Patent Agency Ranking
公开(公告)号：JP2003155921A
公开(公告)日：2003-05-30
申请号：JP2001356202
申请日：2001-11-21
Applicant: TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
Inventor： AOYAMA TARO , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , ITO TAKEKAZU , TAWARA ATSUSHI , OKI MAMORU , YOKOYAMA MASAKUNI , KUSAJI HIDESHI , MIZUGUCHI KEIICHI
Abstract: PROBLEM TO BE SOLVED: To provide a technology of favorably regenerate a particulate filter in an exhaust emission control device of an internal combustion engine equipped with the particulate filter. SOLUTION: In the exhaust emission control device of the internal combustion engine which estimate the PM trapping quantity of the particulate filter (29) provided in an exhaust passage of the internal combustion engine and determines the regeneration period of the particulate filter (29) according to the estimation, the regeneration period is corrected according to the actual regeneration state of the particulate filter (29) when performing the regeneration.
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公开(公告)号：JP2003148133A
公开(公告)日：2003-05-21
申请号：JP2001341584
申请日：2001-11-07
Applicant: TOYOTA MOTOR CORP
Inventor： TAWARA ATSUSHI , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , ITO TAKEKAZU
Abstract: PROBLEM TO BE SOLVED: To control precisely a temperature of a catalyst by providing a technology that eliminates a difference between a quantity of a reducing agent needed at the time of catalyst temperature rise and the quantity of the reducing agent actually supplied in an exhaust emission control device for an internal combustion engine. SOLUTION: This device is provided with: an exhaust emission control catalyst 20; an operating condition detecting means 33; a target amount of temperature rise determining means 35 to determine the target amount of temperature rise of the catalyst 20; a temperature raising means 28 to raise the temperature of the catalyst 20 by supplying a reducing agent; the catalyst temperature rise estimating means 24 to estimate the actual temperature rise of the catalyst 20; a compensation coefficient calculation means 35 to calculate the ratio between the temperature rise determined with the determining means 35 for the target amount of temperature rise and the temperature rise determined with an estimating means 24 for the temperature rise of the catalyst; and a reducing agent supplied amount compensating means 35 to compensate the amount supplied of the reducing agent supplied by the temperature raising means 28 based on the value calculated by the compensation coefficient calculation means 35.
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公开(公告)号：JP2002155793A
公开(公告)日：2002-05-31
申请号：JP2000357417
申请日：2000-11-24
Applicant: TOYOTA MOTOR CORP
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , OKI HISASHI , MAGATA HISAFUMI , ISHIYAMA SHINOBU , KOBAYASHI MASAAKI , SHIBATA DAISUKE , ODA TOMIHISA , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To improve an exhaust emission control technology of an internal combustion engine by establishing a technology judging the state of deterioration of a NOx catalyst. SOLUTION: The exhaust emission control device is provided with a lean combustion type internal combustion engine 1; an NOx catalyst 20; an NOx purification control means 35 for executing NOx purification processing so as to release and reduce a nitrogen oxide absorbed by the NOx catalyst 20; a poisoning dissolving control means 35 for executing poisoning dissolving processing so as to dissolve poisoning of the NOx catalyst by an oxide; a poisoning dissolving processing number memory means 35 for memorizing the number of the poisoning dissolving processing executed by the poisoning dissolving control means 35; and a catalyst deterioration judgment means 35 for judging a deterioration state of the NOx catalyst based on the executed number of the poisoning dissolving processing memorized in the poisoning dissolving processing number memory means 35.
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公开(公告)号：JP2002155724A
公开(公告)日：2002-05-31
申请号：JP2001040086
申请日：2001-02-16
Applicant: TOYOTA MOTOR CORP
Inventor： ISHIYAMA SHINOBU , MAGATA HISAFUMI , KOBAYASHI MASAAKI , TAWARA ATSUSHI , AOYAMA TARO , OKI HISASHI , SHIBATA DAISUKE , NEGAMI AKIHIKO , ODA TOMIHISA , HARADA YASUO , OTSUBO YASUHIKO
IPC: F02M25/07 , F01N3/02 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F01N3/36 , F02D21/08 , F02D41/12 , F02D41/38 , F02D41/40 , F02D43/00
Abstract: PROBLEM TO BE SOLVED: To provide an art capable of sufficiently detoxifying SOx poisoning and PM poisoning of a particulate filter without unnecessarily increasing the consumption of fuel, in an exhaust emission control device for an internal combustion engine provided with the particulate filter bearing an NOx absorbing agent. SOLUTION: This exhaust emission control device for an internal combustion engine comprises the particulate filter bearing an NOx absorbing agent; and a poisoning detoxifying means conducting poisoning detoxifying processing of the particulate filter, under the condition that a decelerating operation state of the internal combustion engine is detected, when it is necessary to detoxify the poisoning of the particulate filter due to oxide or particulate matter. When the internal combustion engine is in the decelerating operation state and idling operation state, the poisoning detoxifying processing of the particulate filter is conducted.
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公开(公告)号：JP2002122019A
公开(公告)日：2002-04-26
申请号：JP2000316643
申请日：2000-10-17
Applicant: TOYOTA MOTOR CORP
Inventor： ODA TOMIHISA , MATSUSHITA SOICHI , OKI HISASHI , HAYASHI KOTARO , ISHIYAMA SHINOBU , KOBAYASHI MASAAKI , SHIBATA DAISUKE , MAGATA HISAFUMI , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To prevent degradation of a catalyst and deterioration of exhaust emission by supplying reducing agent, based on a bed temperature of a NOx catalyst. SOLUTION: This device is provided with the NOx catalyst 20, an operation state detection means for detecting the operation state of an internal combustion engine 1, an inlet gas temperature measuring means 37 for measuring the temperature of exhaust flowing into the NOx catalyst 20, an outlet gas temperature measuring means 24 for measuring the temperature of exhaust flowing out of the NOx catalyst 20, a catalyst bed temperature estimation means 35 by inlet gas for estimating the bed temperature of the NOx catalyst 20, based on the temperature of exhaust and the operating state, a reducing agent supply means 28 for supplying reducing agent based on the bed temperature of the NOx catalyst 20, a catalyst bed temperature detection means 35 by outlet gas for detecting the bed temperature of the NOx catalyst 20 based on the temperature of exhaust and an abnormality determining means for determining whether the NOx catalyst is abnormal.
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