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公开(公告)号：JPS6438624A
公开(公告)日：1989-02-08
申请号：JP19430487
申请日：1987-08-05
Applicant: TOYOTA MOTOR CORP
Inventor： KOTANI TAKESHI , MATSUSHITA SOICHI , TAKIMOTO TOSHIYUKI , YASUDA AKIO
Abstract: PURPOSE:To enable the accurate detection of a change in combustion, by providing a combustion pressure sensor in some cylinders of an internal combustion engine and by detecting a change in the number of revolutions. CONSTITUTION:Gear members 24 and 26 for detecting the number of revolutions are fixed on a distribution shaft 20a, magnetic sensors 28 and 30 are provided oppositely to the members 24 and 26, and a pulse signal corresponding to the revolution of a crank shaft connected to the shaft 20a is generated. A combustion pressure sensor 34 is provided in a combustion chamber 11 of some of four cylinders of an internal combustion engine, and an effective compression work at a compression stroke can be known from a combustion pressure. Besides, a suction pipe pressure sensor 32 is provided in a suction pipe 12, and a suction pipe pressure being a value equivalent to a load on the internal combustion engine can be known therefrom. Moreover, a control circuit 40 is constructed as a microcomputer system and executes a control on an air-fuel ratio. In this way, a change in combustion can be detected accurately.
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公开(公告)号：JPS6429656A
公开(公告)日：1989-01-31
申请号：JP18234487
申请日：1987-07-23
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUSHITA SOICHI , YASUDA AKIO , KOTANI TAKESHI , TAKIMOTO TOSHIYUKI
Abstract: PURPOSE:To perform sensitivity compensation accurately all the time by calculating the specified torque on the basis of a signal out of a sensor detecting the extent of combustion pressure in an internal combustion engine, and compensating the sensor's sensitivity according to a ratio of the calculated torque to a fuel quantity to be fed to the engine. CONSTITUTION:An internal combustion engine is provided with a sensor 38 detecting the combustion pressure. In this case, there is provided with a device 1 which calculates the specified torque on the basis of a combustion pressure signal out of this sensor 38. And, also there is provided with a device 2 which detects a fuel quantity to be fed to the engine. And, on the basis of a ratio of the specified torque to a fuel supply, there is also provided with a device 3 which compensates sensitivity of the sensor 38. With this constitution, a sensitivity variation in the sensor 38 is accurately compensated irrespective of any variation in a driving state in the engine, thus an accurate measured value is secured at all times.
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公开(公告)号：JPS6371548A
公开(公告)日：1988-03-31
申请号：JP21409786
申请日：1986-09-12
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUSHITA SOICHI , TAKIMOTO TOSHIYUKI
Abstract: PURPOSE:To permit the correct control without finely dividing the division angle by calculating the correction quantity of the crank angle detection value according to the pressure difference at the position at which the compression top dead center detected in motoring is interposed. CONSTITUTION:The pressure in a combustion chamber 18 in the motoring such as in fuel cut and cranking is highest at the compression top dead center. However, when the standard signal supplied from the first crank angle sensor 32 does not coincide with the compression top dead center, the peak of the compression pressure shifts from the compression top dead center which the standard signal detects. Therefore, in a control circuit 40, the difference of the compression pressure detected by a pressure sensor 31 is detected at the objective crank angle, keeping the compression top dead center detected by the second crank angle sensor 33 interposed, and the correction quantity of the crank angle detection value is calculated by a crank angle sensor 32. Therefore, the sufficient precision can be obtained, even with a considerably wide pressure detecting interval.
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公开(公告)号：JPS61212648A
公开(公告)日：1986-09-20
申请号：JP5276685
申请日：1985-03-15
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUSHITA SOICHI , KOTANI TAKESHI
Abstract: PURPOSE:To enable stable combustion to be obtained in an internal-combustion engine, by correcting both the target air-fuel ratio and also the target ignition timing to be controlled on the basis of intake temperature data from an operation condition detecting means. CONSTITUTION:An air-fuel ratio control means (c) performs a feedback control so as to obtain air-fuel ratio on the basis of a load, speed and air-fuel ratio of an internal-combustion engine (a) detected by an operation condition detecting means (b). While an ignition timing control means (d) simultaneously performs a control so as to provide ignition in the proper timing. Next, if an outside temperature changes, a control device, on the basis of intake temperature data from the detecting means (b), corrects the target air-fuel ratio of the air-fuel ratio control means (c) by an air-fuel ratio correcting means (e) simultaneously the target ignition timing of the ignition timing control means (d) by an ignition timing correcting means (f). In this way, stable combustion can be obtained in the internal-consumption engine, accordingly its operative performance and fuel consumption are improved.
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公开(公告)号：JPS6196160A
公开(公告)日：1986-05-14
申请号：JP21705484
申请日：1984-10-16
Applicant: Toyota Motor Corp
Inventor： KATO KENJI , MATSUSHITA SOICHI , NAKANISHI KIYOSHI
CPC classification number: F02D41/008 , F02D41/0002 , F02D2041/0015 , Y02T10/42
Abstract: PURPOSE:To improve stability in a low speed range, by closing a swirl control valve in a zone other than a high load running range, and controlling a fuel injection valve for injection to each cylinder independently, in case of a device which installs the swirl control valve at the downstream of the fuel injection valve. CONSTITUTION:A control circuit 30 calculates fundamental injection time from an ignition timing map on the basis of each output of an engine speed sensor 28 and a suction pipe pressure sensor 10 in time of engine running. In addition, according to the compensation factor calculated on the basis of each output of a suction temperature sensor 2 and a water temperature sensor 20, the fundamental injection time is compensated. At mentioned above, after compensation of the fundamental injection time, whether it is a high load range or not is judged by suction pipe pressure or a throttle signal out of a throttle valve opening sensor 6, and in the high load range, a swirl control valve 36 is set to open whereby a fuel injection valve 16 is controlled for injection in synchronization with each cylinder. And, at a zone other than the highload range, the said valve 36 is closed and the fuel injection valve 16 is controlled for injection to each cylinder independently.
Abstract translation: 目的：为了提高低速范围内的稳定性，通过在高负载运行范围以外的区域关闭旋流控制阀，并且独立地控制每个气缸喷射的燃料喷射阀，在安装涡流的装置的情况下 控制阀在燃油喷射阀的下游。 构成：控制电路30基于发动机运转时的发动机转速传感器28和吸入管压力传感器10的各输出，根据点火时间图计算基本喷射时间。 此外，根据基于吸入温度传感器2和水温传感器20的各输出计算出的补偿系数，补偿基本喷射时间。 如上所述，在基本喷射时间的补偿之后，通过吸入管压力或节气门开度传感器6的油门信号来判断是否为高负载范围，在高负荷范围内，进行涡流控制 阀36被设定为打开，由此与每个气缸同步地控制燃料喷射阀16用于喷射。 并且，在除了高负载范围之外的区域中，所述阀36关闭，并且燃料喷射阀16被控制以独立地注射到每个气缸。
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Patent Agency Ranking
公开(公告)号：JP2004225613A
公开(公告)日：2004-08-12
申请号：JP2003014484
申请日：2003-01-23
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , OKI HISASHI , YAMAGUCHI MASAAKI , SHIBATA DAISUKE
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine for surely purifying exhaust gas by accurately controlling the air-fuel ratio of the exhaust gas flowing in an NOx catalyst when controlling the air-fuel ratio of the exhaust gas flowing in the NOx catalyst by making a feedback process in the internal combustion engine having the NOx catalyst for purifying the exhaust gas by storing and reducing NOx included in the exhaust gas. SOLUTION: This exhaust emission control device of the internal combustion engine has the NOx catalyst for purifying the exhaust gas by storing and reducing the NOx included in the exhaust gas, and corrects a detecting value of the air-fuel ratio of the downstream exhaust gas of the NOx catalyst to a rich side value (S104) or corrects the air-fuel ratio being an objective value in the feedback control to a lean side value as an SOx quantity stored in the NOx catalyst increases when controlling the air-fuel ratio of the exhaust gas flowing in the NOx catalyst on the basis of the air-fuel ratio of the downstream exhaust gas of the NOx catalyst by making the feedback process (S105). COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2003343245A
公开(公告)日：2003-12-03
申请号：JP2002155366
申请日：2002-05-29
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , OKI HISASHI , SHIBATA DAISUKE
IPC: F02B37/00 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/22 , F01N3/24 , F01N3/28 , F02B37/24 , F02D21/08 , F02D23/00 , F02D43/00 , F02M25/07
CPC classification number: F02B37/24 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N3/105 , F01N3/106 , F01N3/30 , F01N13/009 , F01N13/0097 , F01N2250/02 , F01N2510/06 , F01N2560/06 , F01N2560/08 , F01N2570/04 , F01N2610/03 , F02M26/05 , F02M26/10 , F02M26/15 , F02M26/38 , Y02T10/144
Abstract: PROBLEM TO BE SOLVED: To provide a technology wherein a reducing agent and hydrogen sulfide flown on feeding the reducing agent to NOx catalyst are removed in an exhaust purifying device of an internal combustion engine.
SOLUTION: The exhaust gas purifying device is provided with: a NOx catalyst 14; a reducing agent feeding means 28; an oxidation catalyst 18 at the downstream side of the NOx catalyst 14; a supercharger 15; a secondary air intake pipe 24 communicating an exhaust system 13 from NOx catalyst 14 to the oxidation catalyst 18 with an intake system 9 from the supercharger 15 to the internal combustion engine 1; a secondary air quantity regulating valve 25 for regulating the secondary air quantity; a differential pressure detecting means 26 for detecting the differential pressure between the exhaust system 13 from the NOx catalyst 14 to the oxidation catalyst 18 and the intake system 9 from the supercharger 15 to the internal combustion engine 1; and a sulfur poison recovering means for recovering the sulfur poison only when the pressure of the exhaust system 13 is higher than that of the intake system 9.
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：提供一种技术，其中在内燃机的排气净化装置中除去在将还原剂供给到NOx催化剂时流动的还原剂和硫化氢。 解决方案：废气净化装置设置有：NOx催化剂14; 还原剂供给装置28; 在NOx催化剂14的下游侧的氧化催化剂18; 增压器15; 将排气系统13从NOx催化剂14连通到氧化催化剂18的二次进气管24，其具有从增压器15到内燃机1的进气系统9; 用于调节二次空气量的二次空气量调节阀25; 用于检测从NOx催化剂14到氧化催化剂18的排气系统13与从增压器15到内燃机1的进气系统9之间的压差的差压检测装置26; 以及仅在排气系统13的压力高于进气系统9的压力时才回收硫毒素的硫毒物回收装置。（C）2004，JPO
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公开(公告)号：JP2003336518A
公开(公告)日：2003-11-28
申请号：JP2002144807
申请日：2002-05-20
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , OKI HISASHI , SHIBATA DAISUKE
Abstract: PROBLEM TO BE SOLVED: To provide a technology for precisely feeding a necessary quantity of a reducing agent in recovering a NOx poisoned NOx occlusion agent in an emission control device of an internal combustion engine. SOLUTION: The emission control device comprises the NOx occlusion agent 14, a reducing agent feeding means 25, a sulfur poisoning recovery means 25 for recovering the sulfur poisoning of the NOx occlusion agent 14, an oxygen concentration determining means 24 for determining a target oxygen concentration at the time of the sulfur poisoning recovery, an oxygen concentration detecting means 20 for detecting the oxygen concentration in the emission gas, an averaging means 24 for averaging the oxygen concentration detected when the reducing agent is fed, and a reducing agent feeding quantity correcting means 24 for calculating the difference between the oxygen concentration determined by the oxygen concentration determining means 24 and the average oxygen concentration averaged by the averaging means 24, reducing the quantity of the reducing agent when the oxygen concentration determined by the oxygen concentration determining means 24 is larger, and increasing the quantity of the reducing agent when the average oxygen concentration averaged by the averaging means 24 is larger. COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：提供一种在内燃机的排放控制装置中精确地供给必要量的还原剂以回收NOx中毒的NOx吸留剂的技术。 解决方案：排放控制装置包括NOx吸收剂14，还原剂进料装置25，用于回收NOx吸留剂14的硫中毒的硫中毒回收装置25，用于确定 硫中毒恢复时的目标氧浓度，用于检测排出气体中的氧浓度的氧浓度检测装置20，平均化装置24，用于平均在还原剂供给时检测到的氧浓度;还原剂进料 数量校正装置24，用于计算由氧浓度确定装置24确定的氧浓度与由平均装置24平均的平均氧浓度之间的差值，当由氧浓度确定装置确定的氧浓度时减少还原剂的量 24大，减少量增加 当平均装置24平均的平均氧浓度较大时， 版权所有（C）2004，JPO
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29.发明专利
公开(公告)号：JP2003286878A
公开(公告)日：2003-10-10
申请号：JP2003017401
申请日：2003-01-27
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , OKI HISASHI , KOBAYASHI MASAAKI , SHIBATA DAISUKE
IPC: F02M25/07 , F01N3/02 , F01N3/08 , F01N3/10 , F01N3/18 , F01N3/20 , F01N3/22 , F01N3/24 , F01N3/28 , F02D21/08 , F02D41/04 , F02D41/38 , F02D41/40 , F02D43/00
CPC classification number: Y02T10/144 , Y02T10/26 , Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To provide a device and a method for exhaust-emission control of an internal combustion engine provided with a NOx catalyst in an exhaust path in which the NOx catalyst can be regenerated favorably from SOx poisoning irrespective of the operation condition of the internal combustion engine. SOLUTION: An air-fuel ratio of exhaust gas is controlled firstly to a 1st predetermined air-fuel ratio at which the volume of discharged smoke is set at an allowable upper limit. Then, the exhaust ratio is intermittently controlled to a 2nd predetermined air-fuel ratio which is overrich richer than the 1st air- fuel ratio enabling the NOx catalyst to recover from SOx poisoning, and the temperature of the NOx catalyst is controlled in the range of predetermined temperatures in which the catalyst can be recovered from SOx poisoning and the degradation of the NOx catalyst is not accelerated. COPYRIGHT: (C)2004,JPO
Abstract translation: 解决的问题：提供一种在排气路径中设置有NOx催化剂的内燃机的废气排放控制的装置和方法，其中，NOx催化剂可以从SOx中毒有利地再生而不管操作如何 内燃机的状况。 解决方案：排气的空燃比首先被控制为排出烟量设定在容许上限的第一预定空燃比。 然后，排气比被间歇地控制到第二预定空燃比，其比使得NOx催化剂能够从SOx中毒恢复的第一空燃比更丰富，并且将NOx催化剂的温度控制在 催化剂可以从SOx中毒回收的预定温度和NOx催化剂的降解不会加快。 版权所有（C）2004，JPO
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公开(公告)号：JP2003083054A
公开(公告)日：2003-03-19
申请号：JP2001275400
申请日：2001-09-11
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： MAGATA HISAFUMI , OKI HISASHI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , ISHIYAMA SHINOBU , NEGAMI AKIHIKO , MATSUSHITA SOICHI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine capable of holding an exhaust emission control function of NOx catalyst provided in an exhaust system of the internal combustion engine in a stable condition irrespective of operation conditions of the engine.
SOLUTION: A diesel engine system 1 is provided with a filter casing 42 incorporating the NOx catalyst in the exhaust system 40 and a reducing agent addition valve 17 for adding reducing agent to the upstream side of the filter casing 42 properly. An ECU 80 feeds back the history of change amount (fluctuation width) of oxygen concentration reflecting dynamic state of the reducing agent on the upstream side of the filter casing 42 into addition amount of the reducing agent to the exhaust system 40 sequentially to hold the NOx catalyst in the filter casing 42 at a desired temperature until fuel cut control ends.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种内燃机的废气排放控制装置，其能够在内燃机的排气系统中设置的NOx催化剂的废气排放控制功能处于稳定状态，而与发动机的运转条件无关。 解决方案：柴油发动机系统1在排气系统40中设置有结合有NOx催化剂的过滤器壳体42和用于向过滤器壳体42的上游侧适当添加还原剂的还原剂添加阀17。 ECU80将反映过滤器壳体42的上游侧的还原剂的动态的氧浓度的变化量（变动幅度）的历史顺序反馈到排气系统40的附加量，以保持NOx 催化剂在过滤器壳体42中以期望的温度直到燃料切断控制结束。
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