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51. 发明专利

JP2000088020A WET TYPE FRICTION MATERIAL 失效
公开(公告)号：JP2000088020A
公开(公告)日：2000-03-28
申请号：JP26452998
申请日：1998-09-18
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： TOYAMA MAMORU , OMORI SHUNEI , OTA TAKASHI , INAGAKI SHINJI , FUKUSHIMA YOSHIAKI , UEDA FUMIO , KAWABATA MASATAKA
IPC分类号： F16D69/02
摘要： PROBLEM TO BE SOLVED: To provide a wet type friction material which has a high friction coefficient and a good μ-V characteristic (large dμ/dV value). SOLUTION: A wet type friction material is composed of a base material of fiber, filler and binder, wherein the filler contains a porous substance whose pore diameters at the max. peak of the pore diameter distribution curve range from 1.4 to 30 nm and pore capacity of those pores lying within ±40% of the pore diameter at the max. peak of the distribution curve lies not less than 60% of the total pore capacity. This wet type friction material in which porous substance with pore diameter controlled is included as the filler, has favorably controlled values of oil absorption property, oil retaining and exhausting performances, and exhibits an excellent μ-V characteristic.

52. 发明专利

JPH04197422A FILTER FOR REMOVING COMBUSTIBLE FINE PARTICLES AND NITROGEN OXIDE 失效
公开(公告)号：JPH04197422A
公开(公告)日：1992-07-17
申请号：JP33165490
申请日：1990-11-29
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV , TOSOH CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI , ISHIBASHI KAZUNOBU , YOKOTA KOJI , KONDO SHIRO , SEKIZAWA KAZUHIKO , KASAHARA SENJI
IPC分类号： B01D39/14 , B01D46/00 , B01D53/94
摘要： PURPOSE:To simultaneously remove both of combustible fine particles and nitrogen oxide by providing the first catalyst layer consisting of cobalt and alumina to the filter wall of a feed-in passage and providing the second catalyst layer consisting of cobalt and zeolite to the filter wall of an exhaust passage. CONSTITUTION:Feed-in passages 10 closed on the outflow sides thereof and exhaust passages 11 closed on the inflow sides thereof are provided to a filter carrier 1 made of cordierite having many passages extending in parallel to the axial direction of the carrier and alternately closed at the opening parts of both end surfaces thereof. The filter walls 12 partitioning the feed-in passages 10 and the exhaust passages 11 have pores with a predetermined pore size. The first catalyst layer 2 consisting of cobalt and alumina is provided on the side of the feed-in passages and the second catalyst layer 3 consisting of cobalt and zeolite is provided on the side of the exhaust passages 11. Therefore, the exhaust gas introduced from the feed-in passages 10 comes into contact with the first catalyst layer and combustible fine particles are efficiently burnt and removed even at low temp. of about 350 deg.C in the presence of heat and oxygen in the exhaust gas by the first catalyst layer. Subsequently, the second catalyst layer accelerates the reaction of NOx and HC in the exhaust gas to reduce NOx to harmless components such as N2, CO2 or H2O to remove the same.

53. 发明专利

JPH02139044A MANUFACTURE OF METAL CARRIER 失效
公开(公告)号：JPH02139044A
公开(公告)日：1990-05-29
申请号：JP29416588
申请日：1988-11-21
申请人： TOYOTA MOTOR CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI
IPC分类号： B01D53/86 , B01J35/04 , B23K20/00 , F01N3/28
摘要： PURPOSE:To obtain a metal carrier with satisfactory adhesiveness and high durability and catalytic activity by forming a metal layer on the periphery of a rod-like core as a cell forming material, then bundling these cell forming materials together as a single body and diffusing/junctioning the materials with the removal of the core. CONSTITUTION:A metal foil 2 of chromium, aluminum and iron is wound around a rod-like core 1 of resin so that the foil makes a single run around the core. Then after cutting the foil 2, the ends are junctioned to form a cell forming material 3. After this, these materials are bundled together into a single body 4 and this body is compressed so that it becomes square in cross-section as a base for the carrier. In addition, this base is soaked in an organic solvent such as toluene to dissolve and remove the rod-like core and at the same time, the surface of the foil 2 is washed. Next an additional aluminum layer is formed on the inner surface of the cell and the base with the aluminum layer is placed in an electric furnace for diffusion and junction. Thus a metal carrier with satisfactory adhesiveness and high durability/catalytic activity is obtained.

54. 发明专利

JPH02135143A PRODUCTION OF CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH02135143A
公开(公告)日：1990-05-24
申请号：JP28699688
申请日：1988-11-14
申请人： TOYOTA MOTOR CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI
IPC分类号： B01D53/94 , B01J29/06
摘要： PURPOSE:To obtain a catalyst having high NOx removing performance by adhering a gel soln. prepd. by mixing starting materials for synthesizing zeolite to a metal carrier, carrying out heating under pressure and calcining to form a zeolite layer and supporting a catalytically active metal on the zeolite layer. CONSTITUTION:A gel soln. prepd. by mixing starting materials for synthesizing zeolite such as alkali, alumina and silica is adhered to a metal carrier 1. This carrier 1 is put in a hermetically sealed vessel and heated with steam at about 80-350 deg.C under about 0.1-20kg/cm pressure for about 10-100hr to crystallize zeolite. The carrier 1 is then cooled, washed, dried and calcined at about 400-700 deg.C to form a zeolite layer 3 on the carrier 1 and a catalytically active metal such as Cu is supported on the zeolite layer 3. The resulting catalyst removes NOx at a high rate even in an air contg. oxygen in excess in a lean air-fuel ratio.

55. 发明专利

JPH0256247A CATALYST FOR CLEANING EXHAUST GAS 失效
公开(公告)号：JPH0256247A
公开(公告)日：1990-02-26
申请号：JP23117888
申请日：1988-09-14
申请人： TOYOTA MOTOR CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI
IPC分类号： B01D53/94 , B01J29/06
摘要： PURPOSE:To convert hydrocarbon, CO and NOx in an exhaust gas to non- polluting materials by successively laminating a catalyst layer essentially consisting of zeolite and catalyst layer essentially consisting of a noble metal catalyst having oxidation-reduction power on a carrier, thereby forming the catalyst. CONSTITUTION:A 1st catalyst layer 12 essentially consisting of the zeolite is laminated on the carrier 10 and the 2nd catalyst layer 14 essentially consisting of the noble metal catalyst having the oxidation-reduction power is laminated on the layer 12 to form the catalyst for converting the hydrocarbon, carbon monoxide and nitrogen oxide in the exhaust gas of an internal combustion engine to non-polluting materials. So-called monolith carriers, granular pellet carriers, etc., are used for the carrier. The 2nd catalyst is formed by depositing noble metal catalysts such as Pt, Pd, and Rh in the form of the soln. thereof on the coating layer after forming the coating layer consisting of alumina, etc., on the 1st catalyst layer.

56. 发明专利

JPS63156546A PRODUCTION OF METAL CARRIER 失效
公开(公告)号：JPS63156546A
公开(公告)日：1988-06-29
申请号：JP30510786
申请日：1986-12-20
申请人： TOYOTA MOTOR CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI
IPC分类号： B01J35/04 , B01J31/04
摘要： PURPOSE:To control the generation of imperfect parts, by laminating and winding a corrugated sheet and a flat sheet while the thermoplastic resin in a brazing material is melted, and temporarily fixing the sheet by the thermoplastic resin in the brazing material to form a compact. CONSTITUTION:The thin sheet of an iron-chromium-aluminum alloy is used for the corrugated sheet 2 and the flat sheet 1. The brazing material is prepared, for example, by using 40wt% Ni-Cr alloy and 60wt% thermoplastic polyethylene resin, melting the mixture to uniformly disperse the components, and then cooling and curing the material. The brazing material is packed in an inside coating machine 4 and an outside coating machine 3. The tip of the coating machine is heated by a heater 4 to melt the material, the melt is extruded from a nozzle 5, and the melt is coated in portions of a specified amt. on the tops of the corrugated sheet 2 on both sides. The thermoplastic resin coated on the corrugated sheet 2 is cured before being brought into contact with the flat sheet 1, and stuck to the top as shown by 8.

57. 发明专利

JPS6253738A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPS6253738A
公开(公告)日：1987-03-09
申请号：JP19419485
申请日：1985-09-03
申请人： TOYOTA MOTOR CORP
发明人： KAWABATA MASATAKA , MATSUMOTO SHINICHI
IPC分类号： B01J23/56 , B01D53/94 , B01J23/89
摘要： PURPOSE:To prevent the formation of a solid solution consisting of a catalytic component and alumina, by providing a first support layer comprising perovskite type composite oxide and a second support layer comprising activated alumina to a catalyst carrier base material and supporting a catalyst by said support layers. CONSTITUTION:A first support layer composed of perovskite represented by RBO3 or R1-xAxBO3 (wherein R is an element of the group IIa of the Periodic Table, B is an element of the Periodic Table other than R and A is an element of the Periodic Table other than R and B) is formed to a catalyst carrier base material over a range from one end surface of the base material up to a predetermined length in the flow passage direction exhaust gas. A second support layer composed of a ceramic material based on activated alumina is formed to the surface of the carrier base material having no first support layer formed thereto. Further, at least rhodium is supported by the first support layer to prepare a catalyst for purifying exhaust gas.

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