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公开(公告)号：JP2009228680A
公开(公告)日：2009-10-08
申请号：JP2009162355
申请日：2009-07-09
Applicant: Denso Corp , 株式会社デンソー
Inventor： YAMASHITA YUKIHIRO
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To prevent a normal catalyst from being determined as a deteriorated catalyst in determining deterioration of a catalyst during such a period that catalyst temperature immediately after catalyst regeneration is finished is higher than a normal operating temperature limit. SOLUTION: Since the catalyst temperature is raised during the regeneration of the NOx catalyst 24, the catalyst temperature is higher than the normal operating temperature limit (a temperature range having a high conversion rate) immediately after the catalyst regeneration is finished, thereby even the normal NOx catalyst 24 has decreased conversion capacity. When determining the degradation of the NOx catalyst 24 immediately after the catalyst regeneration is finished, there is possibility to erroneously determine the normal NOx catalyst 24 as the deteriorated catalyst. As a countermeasure, deterioration determination of the NOx catalyst 24 is prohibited until a predetermined time elapses from the completion of the catalyst regeneration. Thereby, during such a period that the temperature of the NOx catalyst 24 is higher than the normal operating temperature limit, it is possible to avoid deterioration determination of the NOx catalyst 24 and to prevent the normal NOx catalyst 24 from being erroneously determined as the deteriorated catalyst. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题为了防止在确定催化剂再生结束后的催化剂温度高于正常工作温度极限的期间，在确定催化剂劣化时，防止正常催化剂被判定为劣化的催化剂。 解决方案：由于催化剂温度在NOx催化剂24的再生期间升高，催化剂温度高于催化剂再生结束后的正常工作温度极限（转化率高的温度范围），因此 即使正常的NOx催化剂24也具有降低的转化能力。 当催化剂再生完成之后立即确定NOx催化剂24的劣化时，有可能错误地确定正常的NOx催化剂24作为劣化的催化剂。 作为对策，NOx催化剂24的劣化判定被禁止，直至催化剂再生完成为止。 因此，在NOx催化剂24的温度高于正常工作温度极限的期间，可以避免NOx催化剂24的劣化判定，并防止正常的NOx催化剂24被错误地确定为恶化 催化剂。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2006057587A
公开(公告)日：2006-03-02
申请号：JP2004242463
申请日：2004-08-23
Applicant: Denso Corp , 株式会社デンソー
Inventor： NAGASHIMA KO , YAMASHITA YUKIHIRO , YOSHIUME NAOKI
CPC classification number: F02D41/222 , F01N11/00 , F01N2550/00 , F02D2041/1431 , Y02T10/40
Abstract: PROBLEM TO BE SOLVED: To improve the accuracy of diagnosing the malfunction of an air/fuel ratio sensor by distinguishing the influence of time constant deterioration of the air-fuel ratio sensor from that of waste time deterioration when diagnosing the malfunction.
SOLUTION: PI control (malfunction diagnosing air-fuel ratio control) is executed to periodically change an air-fuel ratio detected by the air-fuel ratio sensor 25. A time when the air-fuel ratio detected by the air-fuel ratio sensor 25 passes through a predetermined rich-direction section during PI control is detected as a rich-direction time constant, and a time when it passes through a predetermined lean-direction section is detected as a lean-direction time constant. A time from the air-fuel ratio being corrected to be much greater to the detected air-fuel ratio exceeding a rich-direction threshold value is detected as a rich-direction waste time, and a time from the air-fuel ratio being corrected to be much smaller to the detected air-fuel ratio exceeding a lean-direction threshold value is detected as a lean-direction waste time. The rich-direction time constant, the lean-direction time constant, the rich-direction waste time and the lean-direction waste time are each compared with a malfunction determined value to diagnose the presence or not of the malfunction.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：通过在诊断故障时区分空燃比传感器的时间常数劣化对废气时间劣化的影响，来提高诊断空/燃比传感器故障的精度。
解决方案：执行PI控制（故障诊断空燃比控制）以周期性地改变由空燃比传感器25检测的空燃比。当空燃比检测到的空燃比时 在PI控制期间，比率传感器25通过预定的丰富方向部分被检测为富时方向时间常数，并且将其经过预定的倾斜方向部分的时间检测为稀方向时间常数。 作为丰富方向的废弃时间，从空燃比被修正为大于超过了丰富方向阈值的检测空燃比的时间被检测为从空燃比被修正到 被检测为超过倾斜方向阈值的检测到的空燃比被视为稀薄方向废物时间小得多。 将富时方向时间常数，瘦方向时间常数，丰富方向浪费时间和瘦方向浪费时间分别与故障确定值进行比较，以诊断是否存在故障。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005076513A
公开(公告)日：2005-03-24
申请号：JP2003307006
申请日：2003-08-29
Applicant: Denso Corp , 株式会社デンソー
Inventor： IWATSUKI HIDEKI , SUGIMURA ATSUSHI , YAMASHITA YUKIHIRO
CPC classification number: F02D41/123 , F02P3/0435
Abstract: PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine capable of controlling the amount of current carrying to an ignition coil more suitably.
SOLUTION: Temperature change amount ΔT1 of the ignition coil accompanying self heat generation is calculated based on ignition coil temperature T(n-1) and speed of the internal combustion engine of a previous time in a step 400. Temperature change amount ΔT2 of the ignition coil accompanying heat transmission from the internal combustion engine is calculated based on ignition coil temperature T(n-1) and temperature of cooling water of the internal combustion engine of the previous time in a step 410. Temperature change amount ΔT3 of the ignition coil accompanying heat release to open air is calculated based on ignition coil temperature T(n-1) and temperature of intake air of the internal combustion engine of the previous time in a step 420. Ignition coil temperature T(n) at this time is calculated based on each change amount ΔT1-ΔT3 in a step 430.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供一种能够更适当地控制对点火线圈的载流量的内燃机的控制装置。 解决方案：在步骤400中，基于点火线圈温度T（n-1）和前一时刻的内燃机的速度计算伴随自发热的点火线圈的温度变化量ΔT1。温度变化量ΔT2 在步骤410中基于点火线圈温度T（n-1）和内燃机的冷却水的温度在步骤410中计算出来自内燃机的热传递的点火线圈的温度变化量ΔT3 在步骤420中，基于点火线圈温度T（n-1）和内燃机的进气温度在步骤420中计算伴随放热至开放空气的点火线圈。此时的点火线圈温度T（n） 在步骤430中基于每个变化量ΔT1-ΔT3计算。版权所有（C）2005，JPO和NCIPI
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公开(公告)号：JP2004245843A
公开(公告)日：2004-09-02
申请号：JP2004079789
申请日：2004-03-19
Applicant: Denso Corp , 株式会社デンソー
Inventor： KOSAKA YASUO , YAMASHITA YUKIHIRO
CPC classification number: Y02T10/40
Abstract: PROBLEM TO BE SOLVED: To diagnose abnormalities in a limiting current type oxygen sensor with high precision and ease. SOLUTION: The limiting current type oxygen sensor has an oxygen concentration sensing element, which outputs limiting current which is proportional to oxygen concentration and a heater which heats the sensing element. A CPU in a microcomputer controls the energization of the heater to activate the oxygen sensor and calculates element resistance from an applied voltage and detected current of the oxygen sensor. In a sensor abnormality diagnosis routine, the CPU in steps 301 to 307, determines the preconditions for abnormalities diagnosis; and if all the preconditions are fulfilled, the CPU conducts abnormality diagnosis in steps 308 to 311. More specifically, after determining whether the element resistance falls within a predetermined range, if it falls short of the lower limit of the predetermined range, it is determined that there are high-temperature abnormalities in the element; and if the element resistance exceeds the upper limit of the predetermined range, it is determined that there are low-temperature abnormalities in the element. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2004003513A
公开(公告)日：2004-01-08
申请号：JP2003282867
申请日：2003-07-30
Applicant: Denso Corp , 株式会社デンソー
Inventor： KOSAKA YASUO , NAKAYAMA MASAAKI , MUKAI YASUO , YAMASHITA YUKIHIRO , IIDA HISASHI
CPC classification number: F02D41/1456 , Y02T10/40
Abstract: PROBLEM TO BE SOLVED: To diagnose abnormality without being affected by air-fuel ratio before diagnosis start.
SOLUTION: Diagnosis is started by starting cut of fuel (step 101), sensor output I1 when starting fuel cut is read and stored, and a timer is operated to count time elapsed after starting fuel cut (step 102). Next, time T1 from fuel cut start to rise of sensor output to I2 is read from count values of the timer (steps 103, 104), and change rate of sensor output, ΔI=(I2-I1)/T1, is calculated (step 105). Then, the calculated change rate ΔI of sensor output is compared with abnormality judging value Ifc (step 106). If ΔI≥Ifc, the response property of the sensor is normal, but if Δ-
Patent Agency Ranking
公开(公告)号：JPH11271272A
公开(公告)日：1999-10-05
申请号：JP7418598
申请日：1998-03-23
Applicant: Denso Corp , 株式会社デンソー
Inventor： YAMASHITA YUKIHIRO
IPC: G01N27/419 , F01N3/08 , F01N3/24 , F01N3/28 , F02D41/02 , F02D41/04 , F02D41/14 , G01N27/407
CPC classification number: F01N3/0842 , F02D41/0275 , F02D41/1441 , F02D41/1454 , F02D41/146 , F02D41/1461 , F02D41/1463 , F02D2200/0806 , G01N27/407
Abstract: PROBLEM TO BE SOLVED: To conduct lean burn and rich burn with proper timing while reducing a cost, in an air fuel ratio control unit for carrying out temporarily the lean burn in a midway of the rich burn.
SOLUTION: An NOx occluding reduction catalyst (NOx catalyst) 13 is arranged in an engine exhaust pipe 12. A composite gas sensor 26 for detecting simultaneously A/F and NOx concentrations to be output is arranged in an upper stream of the NOx catalyst 13. An engine controlling micro-computor 31 inside an ECU 30 conducts lean burn in an air fuel ratio lean region, conducts also occlusion of NOx in exhaust gas discharged at the time of the lean burn with the NOx catalyst 13, and conducts temporarily rich control for an air fuel ratio to discharge the occluded NOx from the NOx catalyst 13. A CPU 33 inside a gas concentration detecting device 32 selects either of an A/F signal or an NOx signal by the composite gas sensor 26 so as to output the selected signal to the engine controlling micro-computor 31 as a parameter for air fuel ratio control.
COPYRIGHT: (C)1999,JPOAbstract translation: 要解决的问题：在空燃比控制单元中，在富燃烧中途临时执行稀薄燃烧，以适当的时间进行稀燃和丰富的燃烧，同时降低成本。 解决方案：在发动机排气管12中设置有NOx吸留还原催化剂（NOx催化剂）13。在NOx催化剂13的上游配置有用于同时检测输出的A / F和NOx浓度的复合气体传感器26。 ECU30内的发动机控制微型计算机31在空燃比稀薄区域中进行稀燃，在NOx催化剂13的稀燃时排出的废气中也会吸收NOx的吸收，并进行暂时的控制 从NOx催化剂13排出吸留的NOx的空燃比。气体浓度检测装置32内的CPU33通过复合气体传感器26选择A / F信号或NOx信号中的任一个，以输出所选择的信号 作为空燃比控制的参数的发动机控制微型计算机31。
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公开(公告)号：JP2010204108A
公开(公告)日：2010-09-16
申请号：JP2010093562
申请日：2010-04-14
Applicant: Denso Corp , 株式会社デンソー
Inventor： YAMASHITA YUKIHIRO , MAJIMA YOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To enhance the detection accuracy of a current sensor for detecting charge/discharge current of a battery.
SOLUTION: After a predetermined time passes after engine stop (after OFF switching of a key switch 13) until energization to almost all on-vehicle electric apparatuses is turned OFF, a heater 20 of an air-fuel ratio sensor 18 is temporarily switched between ON and OFF. In synchronization with timing at which the heater 20 switches itself from ON to OFF (or from OFF to ON), an amount ΔIbat(i) of change in the battery current and an amount ΔIsen(i) of change in the heater current are calculated to calculate a tolerance K(i) at the present battery current detection value Ibat(i) based on the ratio between the amount ΔIbat(i) of change in the battery current and the amount ΔIsen(i) of change in the heater current. The tolerance K(i) is stored in a backup RAM 22, a learning map (Ibat, K) on the tolerance K with the battery current detection values Ibat used as a parameter is created, and battery current detection values Ibat are corrected using the tolerance K(i).
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：提高用于检测电池的充放电电流的电流传感器的检测精度。 解决方案：在发动机停止（钥匙开关13的OFF切换）直到通电几乎所有车载电气装置关闭之后经过预定时间后，空燃比传感器18的加热器20暂时 在ON和OFF之间切换。 与加热器20自身从接通切换到断开（或从断开）的定时同步，计算电池电流的变化量ΔIbat（i）和加热器电流的变化量ΔIsen（i） 基于电池电流的变化量ΔIbat（i）与加热器电流的变化量ΔIsen（i）之间的比率来计算当前电池电流检测值Ibat（i）的公差K（i）。 公差K（i）被存储在备用RAM22中，产生用作电池电流检测值Ibat作为参数的公差K上的学习映射（Ibat，K），并且使用电池电流检测值Ib 公差K（i）。 版权所有（C）2010，JPO＆INPIT
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8.发明专利Catalyst for burning carbon-containing substance, process for production of the catalyst, material having catalyst carried thereon, and process for production of the material 有权用于含碳物质的催化剂，用于生产催化剂的方法，其所携带的催化剂的材料以及生产该材料的方法
公开(公告)号：JP2008100216A
公开(公告)日：2008-05-01
申请号：JP2007234748
申请日：2007-09-10
Applicant: Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
Inventor： MIZUTANI KEISUKE , SUZAWA TAKUMI , OYAMA NAOHISA , YAMASHITA YUKIHIRO
CPC classification number: B01J29/70 , B01D53/944 , B01D2255/2042 , B01D2255/2092 , B01D2258/012 , B01J29/74 , B01J37/08 , B01J2229/18
Abstract: PROBLEM TO BE SOLVED: To provide a catalyst for burning and removing a carbon-containing substance at low temperature and stably for a long period of time, a process for production of the catalyst, a material having the catalyst carried thereon and a process for production of the material. SOLUTION: The catalyst for burning the carbon-containing substance is used for burning/removing the carbon-containing substance contained in the exhaust gas from an internal-combustion engine. The material having the catalyst carried thereon is produced by depositing the catalyst for burning the carbon-containing substance on a ceramic base material. The catalyst for burning the carbon-containing substance is obtained by conducting a firing step for firing sodalite at 600°C or higher. Otherwise, the catalyst for burning the carbon-containing substance is obtained by conducting a mixing step, a drying step and the firing step. In the mixing step, aluminosilicate (sodalite) is mixed with a source of an alkali metal element and/or a source of an alkaline-earth metal element in water to obtain a mixed solution. In the drying step, the mixed solution is heated to evaporate moisture and produce a solid material. In the firing step, the solid material is fired at 600°C or higher. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 待解决的问题：为了提供一种用于在低温下稳定地长时间燃烧和除去含碳物质的催化剂，制备催化剂的方法，其上载有催化剂的材料和 材料生产过程。 解决方案：用于燃烧含碳物质的催化剂用于燃烧/除去来自内燃机的废气中所含的含碳物质。 其上载有催化剂的材料通过将用于将含碳物质燃烧的催化剂沉积在陶瓷基材上来制备。 用于燃烧含碳物质的催化剂是通过在600℃以上煅烧方钠石的烧成工序而得到的。 否则，通过进行混合步骤，干燥步骤和烧制步骤获得用于燃烧含碳物质的催化剂。 在混合步骤中，将铝硅酸盐（钠锰矿）与碱金属元素源和/或碱土金属元素源在水中混合以获得混合溶液。 在干燥步骤中，将混合溶液加热以蒸发水分并产生固体材料。 在烧成工序中，将固体材料在600℃以上烧成。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007327337A
公开(公告)日：2007-12-20
申请号：JP2006156745
申请日：2006-06-06
Applicant: Denso Corp , 株式会社デンソー
Inventor： TANI KEISUKE , OBAYASHI KAZUYOSHI , SENDA TAKASHI , YAMASHITA YUKIHIRO , KURODA DAISUKE
CPC classification number: F02D41/021 , B60R16/03 , F02D2200/503 , H02J1/14
Abstract: PROBLEM TO BE SOLVED: To provide a vehicular power system capable of suppressing fluctuation of a power voltage, drop of engine revolution, and a deceleration feeling of a vehicle, and of preventing a generated power-deficient state over a long time. SOLUTION: This vehicular power system is provided with: a battery 108 supplying power to electric loads 107a and 107b through a power bus 115; a generator 102 supplying power to the battery 108 and the electric loads 107a and 107b through the power bus 115; and a power control device 105 setting generated power of the generator 102 based on a first range representing a range of charge/discharge power of the battery 108 required for keeping the variation of the power voltage appearing on the power bus 115 within an allowable range, and a second range representing a variation rate range of the charge/discharge power of the battery 108 required for keeping the variation rate of the power voltage within an allowable range. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 解决的问题：提供能够抑制电力电压的波动，发动机转速的下降，车辆的减速感，并且能够长时间地防止发电的电力缺陷状态的车辆用电力系统。 解决方案：该车辆电力系统设置有：电池108，通过电力总线115向电力负载107a和107b供电; 通过电力总线115向电池108和电负载107a和107b供电的发电机102; 以及功率控制装置105，其基于表示将电力总线115上出现的电力变化的变化保持在允许范围内所需的电池108的充放电功率的范围的第一范围来设定发电机102的发电功率， 以及表示将电源电压的变化率保持在允许范围内所需的电池108的充放电功率的变化率范围的第二范围。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007092644A
公开(公告)日：2007-04-12
申请号：JP2005283344
申请日：2005-09-29
Applicant: Denso Corp , 株式会社デンソー
Inventor： YAMASHITA YUKIHIRO , MIWA MAKOTO , ISOBE TAIJI
Abstract: PROBLEM TO BE SOLVED: To provide a system for controlling the power generation of an internal combustion engine in which, while securing a necessary electrical output, the electrical output is so controlled that the discharge of NO x from the internal combustion engine does not exceed an occlusion capacity of an NO x catalyst. SOLUTION: During the operation of the engine, the amount of NO x storage in the NO x catalyst is computed at a specified cycle, and an NO x discharge guard is corrected in accordance with the amount of NO x occlusion. Thus, while securing a necessary electrical output, the electrical output is controlled so that the NO x discharge from the engine does not exceed the occlusion capacity of the NO x catalyst. Further, during the engine operation, an increment of NO x discharge per unit electrical output is computed at the specified cycle. If the increment of the NO x discharge per unit electrical output is an almost specified value, the electrical output is increased by generating power by an upper limit guard set for power generation torque variation in accordance with a guard for the NO x -discharge. If the increment of the NO x discharge per unit electrical output exceeds a specified value, the increment of the NO x discharge per unit electrical output is decreased by generating power by a lower limit guard set for power generation torque variation. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于控制内燃机的发电的系统，其中，在确保必要的电输出的同时，电输出被控制为使得NO
x 从内燃机不会超过NO x 催化剂的阻塞能力。 解决方案：在发动机运行期间，在特定循环中计算在NO
x 催化剂中的NO x 储存量，NO 根据NO x 遮挡的量来校正放电保护装置。 因此，在确保必要的电输出的同时，控制电输出，使得来自发动机的NO x 放电不超过NO x SB催化剂的吸留能力。 此外，在发动机运转期间，以指定的周期计算每单位电气输出的NO x 放电量的增量。 如果每单位电气输出的NO x 放电量的增量几乎是指定值，则通过根据发电转矩变化的上限保护装置发电来增加电力输出， NO x - 电荷。 如果每单位电气输出的NO x 放电量的增量超过规定值，则每单位电气输出的NO x 放电量的增量通过下降 限位保护装置用于发电扭矩变化。 版权所有（C）2007，JPO＆INPIT
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