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61. 发明专利

JPH10151348A OXIDATION CATALYST 失效
公开(公告)号：JPH10151348A
公开(公告)日：1998-06-09
申请号：JP31187696
申请日：1996-11-22
申请人： TOYOTA CENTRAL RES & DEV , DENSO CORP
发明人： YOKOTA KOJI , MATSUOKA YORIKO , SUDA AKIHIKO , NAKAMURA KANEHITO
IPC分类号： B01D53/86 , B01D53/94 , B01J21/16 , B01J23/34 , B01J23/66 , B01J23/72 , B01J23/745 , B01J23/76 , B01J23/89
摘要： PROBLEM TO BE SOLVED: To improve the particulate removing activity of an oxidation catalyst in a low temp. region by producing the catalyst that burns and removes particulates from a carrier made of cerium oxide or zirconium oxide and a catalytic component made of oxide of Cu, Fe or Mn. SOLUTION: A catalytic component made of oxide of at least one kind of metal selected from among Cu, Fe and Mn is carried on a carrier made of at least one of cerium oxide and zirconium oxide to obtain the objective oxidation catalyst that oxidizes HC and SOF contained in exhaust gas from a diesel engine, etc., to purify the exhaust gas and reduces the amt. of particulates discharged. Since cerium oxide is liable to aggregate at >=500 deg.C, it is preferable that cerium oxide is previously stabilized, e.g. by adding 0.2-10mol% La, Y or Pr or 5-50mol% Zr and carrying out firing at >=600 deg.C.

62. 发明专利

JPH1030999A METHOD AND SENSOR FOR DETECTION OF HEAT HISTORY 失效
公开(公告)号：JPH1030999A
公开(公告)日：1998-02-03
申请号：JP20656896
申请日：1996-07-16
申请人： TOYOTA CENTRAL RES & DEV
发明人： YOKOTA KOJI , KIZAKI YOSHIMI , SAKAMOTO TOSHIYUKI , MOTOHIRO TOMOMI
IPC分类号： G01N27/26 , G01K3/04 , G01K7/18 , G01N27/00 , G01N27/04
摘要： PROBLEM TO BE SOLVED: To provide a method and a sensor for the detection of a heat history, by which a state change due to heat, to which an object to be inspected is subjected, can be detected simply. SOLUTION: The heat-history detecting sensor is provided with one pair of electrodes 1, 1, with a diffusion layer 2 which is arranged between the electrodes 1, 1 and which is composed of an insulating substance and with a conductive metal species 3 which is formed so as to make a part between the electrodes 1, 1 at least electrically nonconductive and which is diffused to the diffusion layer 2 according to a temperature inside a thermal atmosphere, to which an object to be inspected is exposed, so as to change the electric resistance of the diffusion layer 2. The heat-history detecting sensor is arranged inside the thermal atmosphere to which the object to be inspected is exposed or near the thermal atmosphere. According to a change in the object to be inspected due to heat, the conductive metal species 3 which constitutes the heat- history detecting sensor is diffused to the diffusion layer 2, and an electric resistance across the electrodes is lowered remarkably after a prescribed time has elapsed. Consequently, when a change in the electric resistance of the heat-history detecting sensor is monitored, the degradation degree of the utility life of the object to be inspected can be detected.

63. 发明专利

JPH08117601A EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH08117601A
公开(公告)日：1996-05-14
申请号：JP25696094
申请日：1994-10-21
申请人： TOYOTA CENTRAL RES & DEV
发明人： HIROSE MIHARU , KIMURA MAREO , YOKOTA KOJI , DOI HARUO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/58
摘要： PURPOSE: To inhibit the deterioration in NOx purification performance of the catalyst after using it for a long period from occurring in an exhaust gas purification catalyst capable of concurrently purifying CO, HC (hydrocarbons) and NOx in an exhaust gas in an excess oxygen atmosphere. CONSTITUTION: This catalyst consists of a carrier obtained by adding at least one alkali metal to a double oxide MAl2 O4 (wherein M is an alkaline earth metal) and a catalyst metal component which contains at least one metal selected from Pt, Pd and Rh and an NOx absorbent and is deposited on the carrier. The double oxide MAl2 O4 is stable with respect to the NOx absorbent such as Ba, etc., namely, hardly reacts with the absorbent. Also, SOx in an exhaust gas is incorporated into the alkali metal to form a multiple sulfate and since the multiple sulfate is liable to decompose, good NOx purification performance of the catalyst can be maintained without adversely affecting the mass transfer between the noble metal and the NOx absorbent.

64. 发明专利

JPH0866621A METHOD FOR REMOVING NITROGEN OXIDE 失效
公开(公告)号：JPH0866621A
公开(公告)日：1996-03-12
申请号：JP26998294
申请日：1994-11-02
申请人： TOYOTA CENTRAL RES & DEV
发明人： ABE KATSUJI , YOKOTA KOJI , KOBAYASHI TETSUO , MORISHITA SHINYA
IPC分类号： B01D53/56 , B01D53/74 , B01D53/94
摘要： PURPOSE: To effectively remove NOx in waste gas to discharge no harmful by-products by electrolyzing gas to be treated into oxygen and ammonia by a solid electrolytic body and purifying the treated gas contg. the electrolytic products by catalytic reaction. CONSTITUTION: A nitrogen oxide removing device consists of an electrolyzer 1 and a catalytic device 2, and the two are connected by a communicating pipe 10. The electrolyzer 1 is provided with a cylindrical solid electrolytic body 3 having hydrogen ion conductivity and/or oxide ion conductivity in the center of the inside of a housing. On both the inner and outer sides of the solid electrolytic body 3, an anode 4 and a cathode 5 each formed of a platinum electrode are formed. And a DC current is applied to between the electrodes 4, 5 and gas to be treated contg. water and nitrogen oxide is brought into contact with the solid electrolytic body 3. Then, water in the gas is electrolyzed to reduce oxygen and nitrogen oxide in the gas on the anode 4 side and on the cathode 5 side respectively to form ammonia. Next, in the 2nd process, oxygen and ammonia are brought into contact with a catalyst to reduce the nitrogen oxide.

65. 发明专利

JPH0798252A FOURRIER TRANSFORM INFRARED SPECTROMETER 失效
公开(公告)号：JPH0798252A
公开(公告)日：1995-04-11
申请号：JP26586493
申请日：1993-09-28
申请人： JASCO CORP , TOYOTA CENTRAL RES & DEV
发明人： NISHIZAWA SEIJI , WADA AKIO , HAYASHI KAZUHISA , WATANABE MITSUO , YOKOTA KOJI , SAIKI MOTOHISA
IPC分类号： G01J3/45 , G01N21/17 , G01N21/35 , G01N21/45
摘要： PURPOSE:To enable a gaseous nitrogen compound to be analytically measured with high sensitivity by setting a measurement wavenumber region in restriction to a specified range and by constituting each device so as to have a maximum spectral detection sensitivity in this region. CONSTITUTION:Light of a light source 10 enters into a beam splitter 12, where transmitted light progresses to a fixed mirror 14, and reflected light to a movable mirror 16, so that they are reflected and recombined, respectively, but form interference light because of a difference in light paths. A cell 18 is irradiated with this interference light, and a generated interferogram is sensed by a MCT sensor 20 and subjected to Fourrier transform by a Fourrier transformer 22 to obtain spectra of respective wavelenghts. A measurement wavenumber regions is restricted to 2350-610cm : when the sensor 20, light source 10, and splitter 12 are so constituted that a spectral detection sensitivity may be maximum, a gas under measurement can be introduced into the cell at its intact concentration. Therefore, the spectral sensitivity improves rapidly, and it is possible to analytically measure a gaseous nitrogen compound with high precision.

66. 发明专利

JPH0755565A METHOD AND APPARATUS FOR QUANTITATIVELY CALCULATING BY USING SPECTRUM 失效
公开(公告)号：JPH0755565A
公开(公告)日：1995-03-03
申请号：JP21516393
申请日：1993-08-06
申请人： JASCO CORP , TOYOTA CENTRAL RES & DEV
发明人： WADA AKIO , NISHIZAWA SEIJI , OBARA SHOJI , NOZU EISAKU , HAYASHI KAZUHISA , WATANABE MITSUO , YOKOTA KOJI , SAIKI MOTOHISA
IPC分类号： G01J3/42
摘要： PURPOSE:To obtain accurately a quantitative result even in a concentration range in which a spectral intensity is out of a dynamic range of a detector by providing the steps of setting a temporary calibration line, calculating a representative sample temporary concentration, setting a concentration correcting function, calculating a real sample temporary concentration and calculating a concentration correction. CONSTITUTION:A linear temporary calibration line of each component obtained by multi-variate analysis is input to a temporary calibration line setter 2. The linear temporary calibration line and a representative sample spectrum 7 are input to a representative sample temporary concentration calculator 3 to calculate a temporary concentration of a representative sample. Further, the linear temporary calibration line and a real sample spectrum 8 are input to the calculator 3 which calculates a temporary concentration of each component of a real sample. The temporary concentration of the calculator 3 and a sample real concentration 9 are input to a concentration correcting function setter 4 to calculate to set a correcting function. The real sample temporary concentration and the function of the setter 4 are input to a concentration correction calculator 6 to calculate a real concentration value of the real sample.

67. 发明专利

JPH06347325A METHOD AND APPARATUS FOR SELECTING WAVE NUMBER TO BE USED IN SPECTRAL QUANTITATIVE ANALYSIS 失效
公开(公告)号：JPH06347325A
公开(公告)日：1994-12-22
申请号：JP16318693
申请日：1993-06-07
申请人： JASCO CORP , TOYOTA CENTRAL RES & DEV
发明人： WADA AKIO , NISHIZAWA SEIJI , OBARA SHOJI , NOZU EISAKU , HAYASHI KAZUHISA , WATANABE MITSUO , YOKOTA KOJI , SAIKI MOTOHISA
IPC分类号： G01J3/42
摘要： PURPOSE:To achieve a selection of effect and necessary wave number only for quantitative analysis in a very short time by arranging an original spectrum measuring process a process of selecting wave number used and the like. CONSTITUTION:Original absorption spectrum is measured by a spectrum measuring section 10 as original spectrum measuring process. The original absorption spectrums of components are inputted into a CPU12 to perform judgments in a comparison-in- range judging process and an upper limit value comparison judging process and the results of the judgments are stored into a RAM16 in succession. Then, the results of the judgments and expressions for a subject wave number selection process inputted previously into a R0M14 are called up on to the CPU12 to select the wave number below the upper limit value as subject wave number by this expression. Then, in a number of components counting process. the results of the judgment in the comparison-in-range judging process are called up from the RAM16 with respect to the subject wave number to count the number of components determined to be within a ideal range based on the expressions in the ROM14. Then, in a process of selecting the wave number used, the wave number to be used actually is selected and decided based on the number of components counted.

68. 发明专利

JPH0571334A NITROGEN OXIDE REDUCING METHOD IN COMBUSTION DEVICE FOR CONTINUOUS BURNING AND DEVICE THEREOF 失效
公开(公告)号：JPH0571334A
公开(公告)日：1993-03-23
申请号：JP23503691
申请日：1991-09-13
申请人： TOYOTA CENTRAL RES & DEV , AISIN SEIKI
发明人： YAMAGURO AKIRA , HARAMURA SHIGENORI , MINAMOTO NAOKI , OSHIMA YUJIRO , MURAKI HIDEAKI , ABE KATSUJI , YOKOTA KOJI , KAWAHARA KAZUO
IPC分类号： F01N3/08 , B01D53/94 , F01N3/20 , F01N3/26 , F01N3/28 , F23J15/02
摘要： PURPOSE:To improve efficiency of a system and reduce blower power by providing a nitrogen oxide reducing method comprising a supplying process for supplying hydrogen gas, and a reducing process for applying contact reduction to combustion exhaust gas in which the hydrogen gas is supplied in a catalyst device at a low temperature atmosphere 250 deg.C or less so as to reduce nitrogen oxide. CONSTITUTION:The combustion device of a stirling engine comprises a combustion chamber 1, a fuel supplying part 2 for supplying fuel into the combustion chamber 1, an air supplying part 3 for supplying air, a discharging passage 4 for discharging exhaust gas from the combustion chamber 1, a catalyst device 5 arranged in the discharging passage 4, and a hydrogen gas supplying part 6 connected to the discharging passage 4 passing the inside of the combustion chamber 1. In the hydrogen gas supplying part 6, nearly 80 weight% in a mixture made from fuel and water becomes hydrogen was by heat in the combustion chamber 1, and then supplied into the catalyst device 5 in the discharging passage 4. It is thus possible to reduce and eliminate nitrogen oxide in exhaust gas discharged from a combustion device by such a way that hydrogen gas is supplied, and then contact reduction is applied to the gas in the catalyst device 5.

69. 发明专利

JPH0290947A MANUFACTURE OF CATALYST FOR EXHAUST GAS PURIFICATION 失效
公开(公告)号：JPH0290947A
公开(公告)日：1990-03-30
申请号：JP24055488
申请日：1988-09-26
申请人： TOYOTA CENTRAL RES & DEV
发明人： HATTORI NAOKO , KIMURA MAREO , YOKOTA KOJI
IPC分类号： B01D53/94 , B01J23/89
摘要： PURPOSE:To obtain catalysts with high purification capability of CO, HC and NOx by allowing a defective perovskite-type compound oxides containing a basic substance to carry the catalytic metal of precious metals in such a manner that the latter is dispersed at high density. CONSTITUTION:An aqueous ammonia solution is added to an aqueous acidic solution of precious metals such as palladium to prepare a solution with a pH value of 7 to 10. Next, defective pervskite-type compound oxides containing basic substances of La1-xSrxMO3 (more than one kind of selected from among 0

70. 发明专利

JPS62269747A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPS62269747A
公开(公告)日：1987-11-24
申请号：JP11416986
申请日：1986-05-19
申请人： TOYOTA CENTRAL RES & DEV
发明人： KIMURA MAREO , YAMADA SACHIKO , YOKOTA KOJI , ISOTANI AKIO
IPC分类号： B01J23/64 , B01D53/94 , B01J23/652 , B01J23/656 , B01J23/89
摘要： PURPOSE:To obtain the title catalyst having excellent activity and heat resistance by incorporating Pd into the composite oxide of defective perovskite having >=10m /g specific surface while 10-50% Pd is dissolved and the balance Pd is deposited. CONSTITUTION:From 0.06 to 0.18wt% Pd is incorporated into the composite oxide of defective perovskite having >=10m /g specific surface and shown by the formula (where 0.1 =2 kinds of transition metals such as Co and Ni). From 10 to 50% of the contained Pd is dissolved in the composite oxide of defective perovskite, and the balance Pd is deposited on the oxide of defective perovskite as PdO or Pd to obtain the catalyst for purifying exhaust gas. The catalyst has excellent activity in purifying CO, HC, and NOx, and the purification rate of NOx is not reduced under varied air/oil ratios in an NOx-enriched atmosphere. Further more, even if the catalyst is used at >=900 deg.C for a long time, the extent of specific surface is not reduced, the purification activity is not deteriorated, and high-temp. durability is demonstrated.

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