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    • 2. 发明专利
    • Catalyst deterioration diagnostic method
    • 催化检测诊断方法
    • JP2013204426A
    • 2013-10-07
    • JP2012070749
    • 2012-03-27
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • SAKAMOTO TOSHIYUKISUDA AKIHIKOMORIKAWA AKIRA
    • F01N3/20F02D41/22
    • F01N11/00F01N2550/02F01N2560/12F01N2900/1624F02D41/1475F02D2200/0814Y02T10/47
    • PROBLEM TO BE SOLVED: To provide a catalyst deterioration diagnostic method which allows simple and accurate diagnosis of deterioration of a catalyst based on information directly obtained from an inspected catalyst.SOLUTION: A catalyst deterioration diagnostic method which diagnoses the deterioration of a catalyst for purifying exhaust gas by employing an inspection object catalyst arranged in an exhaust gas flow path where the exhaust gas circulates, includes an exhaust gas control step for inverting an air-fuel ratio of exhaust gas in the flow path from a lean side to a rich side or from the rich side to the lean side, a measuring step for acquiring a change ratio of the inspection object catalyst by measuring temporal change of electric resistance of the inspection object catalyst at air-fuel ratio inversion, and a determination step for determining catalyst deterioration of the inspection object catalyst based on the resistance change ratio.
    • 要解决的问题:提供一种催化剂劣化诊断方法,其能够基于从被检查催化剂直接获得的信息简单准确地诊断催化剂的劣化。溶解性:用于诊断用于净化排气的催化剂的劣化的催化剂劣化诊断方法 通过采用配置在废气循环的废气流路中的检查对象催化剂的气体,包括排气控制步骤,用于使流路中的排气的空燃比从瘦侧变为富侧, 富侧为稀侧,通过测定检查对象催化剂在空燃比倒置时的电阻的时间变化来求出检查对象催化剂的变化率的测定步骤,以及确定检测对象催化剂的催化剂劣化的判定步骤 检验对象催化剂基于电阻变化率。
    • 3. 发明专利
    • Exhaust emission control device for internal combustion engine
    • 用于内燃机的排气排放控制装置
    • JP2013122179A
    • 2013-06-20
    • JP2011270325
    • 2011-12-09
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • HAYASHI TAKAHIROMORIKAWA AKIRA
    • F01N3/08B01D53/94F01N3/24F01N3/28F02D41/14
    • Y02T10/24
    • PROBLEM TO BE SOLVED: To improve deterioration in fuel consumption for NOreduction in exhaust gas, in an exhaust emission control device for an internal combustion engine provided with a NOreduction catalyst device carrying a base metal catalyst and having low NOreduction performance.SOLUTION: An exhaust emission control device for an internal combustion engine includes: a first NOreduction catalyst device 40 carrying a base metal catalyst disposed at an exhaust passage 30; a second NOreduction catalyst device 50 disposed at the exhaust passage at a downstream side of the first NOreduction catalyst device and having ammonia storage capability; and a first NOsensor 80 disposed at the exhaust passage at a downstream side of the second NOreduction catalyst device. After a combustion air-fuel ratio of the internal combustion engine is made richer than a theoretical air-fuel ratio, the combustion air-fuel ratio of the internal combustion engine is made leaner than the theoretical air-fuel ratio. When the combustion air-fuel ratio of the internal combustion engine is made leaner than the theoretical air-fuel ratio, if NOis detected by the first NOsensor, the combustion air-fuel ratio of the internal combustion engine is made richer than the theoretical air-fuel ratio.
    • 要解决的问题:为了提高排气中的NO X 的燃料消耗的劣化,在内燃机的排气排放控制装置中, SB POS =“POST”> X 还原催化剂装置,其具有贱金属催化剂并且具有低NO X 还原性能。 解决方案:一种用于内燃机的废气排放控制装置,包括:承载设置在排气通道30处的贱金属催化剂的第一NOS SB POS =“X”SB“还原催化剂装置40; 设置在第一NO SB SB“还原催化剂装置的下游侧的排气通道处的第二NOS SB POS =”X“SB”还原催化剂装置“,以及 具有氨储存能力; 以及设置在第二NO ”> X“还原催化剂装置的下游侧的排气通道处的第一NO X 传感器80。 在内燃机的燃烧空燃比变得比理论空燃比更浓之后,使内燃机的燃烧空燃比比理论空燃比更稀。 当内燃机的燃烧空燃比比理论空燃比更精细时,如果通过第一NO X “> X 传感器,使内燃机的燃烧空燃比变得比理论空燃比更浓。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Exhaust emission control device for internal combustion engine
    • 用于内燃机的排气排放控制装置
    • JP2013122177A
    • 2013-06-20
    • JP2011270311
    • 2011-12-09
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • HAYASHI TAKAHIROMORIKAWA AKIRA
    • F01N3/08B01D53/94F01N3/10F01N3/20F01N3/24
    • Y02T10/24
    • PROBLEM TO BE SOLVED: To improve deterioration in fuel consumption for NOreduction, in an exhaust emission control device for an internal combustion engine with a NOreduction catalyst device carrying a base metal catalyst and having low NOreduction performance.SOLUTION: A NOreduction catalyst device 40 carrying a base metal catalyst is disposed at a third exhaust passage 30 positioned at a downstream side of a confluence part 100 between a first exhaust passage 10 of a first cylinder group and a second exhaust passage 20 of a second cylinder group. A NOstorage device 50 is disposed at the second exhaust passage. A communication passage 60 communicating the second exhaust passage at a downstream side of the NOstorage device with the third exhaust passage at a downstream side of the NOstorage device is provided. When a combustion air-fuel ratio of the first cylinder group is made rich and when a combustion air-fuel ratio of the second cylinder group is made lean, exhaust gas flowing out from the NOstorage device passes through the communication passage. When the combustion air-fuel ratio of the second cylinder group is made rich, the exhaust gas flowing out from the NOstorage device passes through the NOreduction catalyst device.
    • 要解决的问题为了改善NO X 的燃料消耗的劣化,在具有NO X 还原性能的“X”SB“还原催化剂装置”。

      解决方案:承载贱金属催化剂的NOS SB POS =“POST”> X“还原催化剂装置40设置在位于汇合部100的下游侧的第三排气通道30之间,位于第一 第一气缸组的排气通道10和第二气缸组的第二排气通道20。 存储装置50设置在第二排气通道中。否则,将 X 存储装置50。 在NO X 存储装置的下游侧将第二排气通道与NO X 存储设备。 当第一气缸组的燃烧空燃比变浓时,当第二气缸组的燃烧空燃比变稀时,从NO X < SB>存储装置通过通信通道。 当第二气缸组的燃烧空燃比变浓时,从NO X 储存装置流出的废气通过NO X 还原催化剂装置。 版权所有(C)2013,JPO&INPIT

    • 5. 发明专利
    • Exhaust gas purification catalyst and method of producing the same
    • 排气净化催化剂及其生产方法
    • JP2013022507A
    • 2013-02-04
    • JP2011159102
    • 2011-07-20
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • TAKAGI SHIGEJIWATABE GAOMORIKAWA AKIRAHIROSE TAKUTONAGAI YASUTAKA
    • B01J23/76B01D53/94B01J37/04B01J37/08F01N3/10
    • PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having excellent exhaust gas purification performance under a relatively low temperature condition and excellent heat endurance, and to provide a method of producing the exhaust gas purification catalyst.SOLUTION: The exhaust gas purification catalyst includes: at least one Group-XIII element oxide; at least either one of at least one lanthanoid oxide and at least one Group-IV element oxide; and particles including at least one base metal selected from a group comprising copper etc. An average particle size of the particles including the base metal is 1-1,000 nm. An average distance between the particles including the base metal and the Group-XIII element oxide nearest to the particles is 60 nm or less, and an average distance between the particles including the base metal and the lanthanoid oxide and/or the Group-IV element oxide nearest to the particles is 60 nm or less.
    • 解决的问题:提供一种在相对低的温度条件下具有优异的废气净化性能和优异的耐热性的废气净化催化剂,并提供一种生产废气净化催化剂的方法。 废气净化催化剂包括:至少一种第ⅩⅢ族元素氧化物; 至少一种镧系元素氧化物和至少一种IV族元素氧化物中的至少一种; 以及包含选自铜等的至少一种母体金属的粒子。包含母体金属的粒子的平均粒径为1-1000nm。 包括贱金属和最接近粒子的第ⅩⅢ族元素氧化物的粒子之间的平均距离为60nm以下,包含贱金属和镧系元素氧化物的粒子和/或IV族元素之间的平均距离 最接近粒子的氧化物为60nm以下。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Colloidal solution of metallic compound, and method of producing the same
    • 金属化合物的胶体溶液及其制造方法
    • JP2010110720A
    • 2010-05-20
    • JP2008287007
    • 2008-11-07
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • SATO KIMITOSHISUDA AKIHIKOYAMAMURA YOSHIEMORIKAWA AKIRA
    • B01J13/00B01F17/52
    • PROBLEM TO BE SOLVED: To provide a colloidal solution of a metallic compound having excellent preservability wherein uniform crystallites of a metallic compound having small crystallite diameters are dispersed in a state of uniform aggregates having small diameters. SOLUTION: The colloidal solution of a metallic compound including aggregates of crystallites of a metallic compound having a crystallite diameter d 50 of 0.8 to 3 nm whereat the cumulative number of the crystallite particles in the particle size distribution reaches 50% and having a crystallite diameter d 90 1.5 times or lower the crystallite diameter d 50 whereat the cumulative number reaches 90%, and a polymeric dispersant, is characterized in that the aggregates have an aggregate particle diameter D 50 of 4 to 70 nm whereat the cumulative mass in the particle size distribution reaches 50% and having an aggregate particle diameter D 90 2.5 times or lower the aggregate particle diameter D 50 whereat the cumulative mass reaches 90%. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供具有优异的保存性的金属化合物的胶体溶液,其中具有小晶粒直径的金属化合物的均匀微晶在具有小直径的均匀聚集体的状态下分散。 解决方案:金属化合物的胶体溶液,其包含具有0.8-3nm的微晶直径d 50 的金属化合物的微晶聚集体,其中粒径的微晶颗粒的累积数 分布达到50%,并且具有微晶直径d 90 1.5倍或更低的微晶直径d 50 ,其中累积数达到90%,聚合物分散剂的特征在于 聚集体的聚集体粒径D 50 4〜70nm,粒度分布的累积质量达到50%,聚集体粒径D 90 <2.5> 时间或降低聚集粒径D 50 ,其中累积质量达到90%。 版权所有(C)2010,JPO&INPIT