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1. 发明专利

JPH07180606A FIBER REINFORCED METAL MADE PISTON 失效
公开(公告)号：JPH07180606A
公开(公告)日：1995-07-18
申请号：JP32552193
申请日：1993-12-24
申请人： MITSUBISHI CHEM CORP , MITSUBISHI MOTORS CORP
发明人： FUKUHARA YASUHIDE , MORI HARUHISA , MIYAZAKI HIROSHI
IPC分类号： F02F3/00
摘要： PURPOSE:To improve cutting performance for a fiber reinforced metal by including ceramic fibers, ceramic particles and carbon fibers in a piston which is formed by a metal impregnated with reinforced fibers. CONSTITUTION:A fiber reinforced metal made piston 1 has a head part 1A and a skirt part 1B, and has, between 1A and 1B a boss part IC in which a piston pin to support a connecting rod is inserted and also a plurality of ring grooves 1D are formed on the head part 1A. In such a piston 1, the head part 1A is formed to a preform 5 which is a fiber reinforcing material formed by ceramic fibers 2 (aluminum fiber, etc.), ceramic particles 3 (cordierite particle, etc.) and carbon fibers 4, by fiber reinforced metal impregnated with aluminium alloy 6 for casting acting as a base material. Further, the other piston parts are formed by the aluminium alloy 6. Thus, the manufacture and work process of the piston 1 are facilitated.

2. 发明专利

JPH07178534A FIBER REINFORCED METALLIC PISTON 失效
公开(公告)号：JPH07178534A
公开(公告)日：1995-07-18
申请号：JP32552293
申请日：1993-12-24
申请人： MITSUBISHI CHEM CORP , MITSUBISHI MOTORS CORP
发明人： FUKUHARA YASUHIDE , MORI HARUHISA , MIYAZAKI HIROSHI
IPC分类号： B22D19/08 , B22D19/14 , F02F3/00
摘要： PURPOSE:To suppress degradation in machining quality and to increase the volumetric rate of reinforcing fibers in a fiber reinforced metallic part by impregnating a preform for reinforcement consisting of ceramic fibers previously formed with a ring groove with molten metal and press forming this preform. CONSTITUTION:The preform 5 is formed by putting alumina fibers 2, cordierite particles 3 and carbon fibers 4 into a cylindrical vessel of water spraying molding machine, dissolving the mixture in a solvent, pressurizing the mixture, removing soln. moisture from the orifice, taking the molding out of the vessel and drying and calcining the molding, thereby molding the preform as a sponge form. The ring groove ID, etc., are machined in the calcined circular preform 5 and is shaped to a prescribed shape. Such preform 5 is set in metal molds for molding a piston and an aluminum alloy of the molten metal is poured into the metal molds. The molten metal is press formed by a plunger formed with the inner shape of the piston in a pressurizing and impregnating stage. As a result, the preform 5 is impregnated with the molten aluminum alloy, by which the preform 5 and the aluminum alloy are combined.

3. 发明专利

JPH0914045A CYLINDER LINEAR AND CYLINDER BLOCK AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0914045A
公开(公告)日：1997-01-14
申请号：JP11830796
申请日：1996-04-16
申请人： RYOBI LTD , MITSUBISHI MOTORS CORP , MITSUBISHI CHEM CORP
发明人： OMURA HIROYUKI , NITTA MAKOTO , TAKAHASHI YOSUKE , USUI HIROTAKE , ISOMOTO ATSUSHI , MORI HARUHISA , YAMAGUCHI KOJI , MIYAZAKI HIROSHI
IPC分类号： F02F1/00 , B22D19/08 , B22D19/14 , C22C1/10 , C22C47/00 , C22C47/08 , C22C49/00 , C22C49/04 , C22C49/06 , F02F1/10 , C22C1/09
摘要： PROBLEM TO BE SOLVED: To realize a cylinder liner made of a particle dispersion type short fiber reinforcement compound alloy providing favorable slide characteristics with high strength, rigidity and size stabilization and a cylinder block providing a cylinder bore part made of said particle dispersion type short fiber reinforcement compound alloy and the manufacturing method thereof. SOLUTION: A cylinder liner or a sleeveless cylinder bore part in which an alumina short fiber whose main component is a seramic particle and alumina is dispersed in a light metal matrix is provided. A pre-form for the cylinder liner or a cylinder bore corresponding part is formed by mixing the seramic particle with a short fiber whose main component is alumina. At the casting time, a melted light metal is soaked in the cave of the pre-form. If the strength and rigidity of the pre-form itself is high and a high size stabilization is provided after soaking and also the seramic particle is a hollow body, a sliding characteristic becomes favorable, as it is applied as a lubrication sump.

4. 发明专利

JPH07178533A METALLIC MOLD FOR FORMING FIBER REINFORCE METALLIC PISTON 失效
公开(公告)号：JPH07178533A
公开(公告)日：1995-07-18
申请号：JP32180993
申请日：1993-12-21
申请人： MITSUBISHI MOTORS CORP
发明人： FUKUHARA YASUHIDE , MORI HARUHISA
IPC分类号： F16J1/01 , B22C9/06 , B22D19/08 , B22D19/14
摘要： PURPOSE:To sufficiently eliminate the air at the time of casting, to sufficiently impregnate molten metal into a preform for reinforcing and to reduce the development of cast defect by forming a rugged part supporting the preform for reinforcing on the whole bottom surface of a metallic mold. CONSTITUTION:The preform 7 is set in the recessed part 2 of the metallic mold 1 and the molten aluminum alloy 10 is poured into the recessed part 2. Then, in the pressurizing and impregnating process, the molten allay 10 is pressurized with a plunger 3 and cooled and solidified in the mold to be formed in a rough piston shape. At this time, the molten aluminum alloy 10 is impregnated into the preform 7 by pressure of the plunger 3 and the air included in the preform 7 is introduced to a through-hole 4 through a clearance L1 and V shape passages (rugged part) 6, 8 and discharged from the clearance L1. By this method, the discharge of the remaining air in the preform on the bottom surface 2B is sufficiently performed and the molten aluminum alloy 10 is sufficiently impregnated every corner of the preform 7 and cast.

5. 发明专利

JPS63289211A EXHAUST MANIFOLD 失效
公开(公告)号：JPS63289211A
公开(公告)日：1988-11-25
申请号：JP12116787
申请日：1987-05-20
申请人： MITSUBISHI MOTORS CORP
发明人： MORI HARUHISA
IPC分类号： F01N13/10 , F01N13/14
摘要： PURPOSE:To lead exhaust gas into a purifier without lowering the temperature thereof so as to enhance the purifying performance of the purifier by forming the body of an exhaust manifold with a ceramic member, and by wrapping the ceramic member with a heat-resistant resin member. CONSTITUTION:An exhaust manifold 1 is composed of an exhaust manifold body 2 formed of a ceramic member having a low thermal conductivity, and a heat-resistant resin member 3 wrapping the exhaust manifold body 2. In this arrangement, the ceramic member forming the exhaust manifold body 2 is made of a material having a porosity large as possible and a low thermal conductivity so as to enhance the heat insulating effect. Meanwhile, in order to compensate the fragility of the ceramic member, the exhaust manifold body 2 is wrapped with the resin member 3 so as to enhance the durability. With this arrangement, the exhaust gas discharged from the engine may be led into a purifier without lowering the temperature of exhaust gas, thereby it is possible to enhance the purifying performance.

6. 发明专利

JPH0295522A MANUFACTURE OF TOOTHED WHEEL 失效
公开(公告)号：JPH0295522A
公开(公告)日：1990-04-06
申请号：JP24618288
申请日：1988-09-30
申请人： MITSUBISHI MOTORS CORP
发明人： TANAKA AKIO , MORI HARUHISA
IPC分类号： B23P15/14 , B23F19/00
摘要： PURPOSE:To improve the dimensional accuracy of the main body of a toothed wheel and enhance the strength of the tooth flank by applying the shot-peening treatment on the tooth part, and performing the hard-finish processing only on the tooth flank part between the region near the tooth crest and the part of bottom land. CONSTITUTION:The shot-peening treatment is performed on each tooth part 2 of a toothed wheel main body 1 of an untreated toothed wheel. A shot-peening treatment part 4, where minute irregularities are formed on the entire surface where the treatment is performed by the injection pressure traces of small steel balls when the shot-peening treatment is performed, is formed on each tooth part 2 of this toothed wheel main body 1, on which the shot-peening treatment is performed. Also, after this shot-peening treatment is applied, the hard-finish processing is successively performed only on the tooth flank part 7 between the region near the tooth crest 5 of each tooth part 2 and a bottom land 6 of the toothed wheel main body 1. Then, machining by CBN tool is performed only on the tooth flank part 7 between the region near the tooth crest 5 and the bottom land 6 of each tooth part 2 of the toothed wheel main body 1, and a hard-finish processing part 8 having small irregularities is formed.

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