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11. 发明专利

JPH01253553A COMBINATION OF CYLINDER SLEEVE AND PISTON OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH01253553A
公开(公告)日：1989-10-09
申请号：JP7825288
申请日：1988-04-01
申请人： HONDA MOTOR CO LTD
发明人： KOYA EITARO , SUZUKI TATSUO
IPC分类号： F02F1/00 , C22C1/05 , C22C21/02 , F02F3/00 , F02F7/00 , F16J1/02 , F16J10/04
摘要： PURPOSE:To obtain an internal combustion engine excellent in durability by providing a cylinder sleeve made of a sintered aluminum alloy having specific composition excellent in heat resistance and wear and abrasion resistance and a piston made of aluminum alloy comprising the external peripheral surface of the skirt thereof coated with specific heat resistant resin. CONSTITUTION:The cylinder sleeve fittedly secured to the cylinder block of an internal combustion engine shall be made of a sintered aluminum alloy. This aluminum alloy is made by press-molding powder comprising aluminum alloy powder composed of primary Si whose grain diameter is 20mum or less, Si, Cu, Mg, and Fe compounded at a specific rate respectively, aluminum and inevitable impurity mixed with aluminum oxide powder of 1 through 5 weight % composed of spherical particles of 1 through 10mum in average particle diameter uniformly and then sintering or hot working it. On the other hand, the piston made of an aluminum alloy and fittedly secured to this sleeve is constituted with the external peripheral surface coated with heat resistant resin in which at least one kind of powder out of MoS2 powder, thermosetting fluorocarbon resin and others dispersedly added.

12. 发明专利

JP2004034093A Method for producing steering head 有权
公开(公告)号：JP2004034093A
公开(公告)日：2004-02-05
申请号：JP2002194781
申请日：2002-07-03
申请人： Honda Motor Co Ltd , 本田技研工業株式会社
发明人： KOYA EITARO , SUZUKI TOSHIMITSU , YOKOYAMA TAKEO
IPC分类号： B62K19/12 , B22C9/10 , B22C9/24 , B62K19/32
摘要： PROBLEM TO BE SOLVED: To restrain the complication of a sand core shape when a steering head is cast and to improve the productivity of the steering head and reduce production cost by making unnecessary the removing process of core sand etc., on the wall surface of a second hollow part into which a steering shaft rotatively supported on the steering head is inserted.
SOLUTION: The steering head for turnably supporting the steering shaft of a steering mechanism for supporting a front wheel in a motorcycle is produced by die casting wherein molten metal is poured into a cavity 60 formed of a mold 50 provided with a sand core 51 for forming a first hollow part and a metallic core 52 for forming a through-hole for inserting the steering shaft. The metallic core 52 is composed of a first core pin 52a and a second core pin 52b which can be pulled out from the mold in the mutually reverse directions in the center axis direction A of the through-hole.
COPYRIGHT: (C)2004,JPO

13. 发明专利

JP2003096524A ALUMINUM ALLOY, PISTON MADE OF ALUMINUM ALLOY, AND METHOD OF PRODUCING PISTON MADE OF ALUMINUM ALLOY 审中-公开
公开(公告)号：JP2003096524A
公开(公告)日：2003-04-03
申请号：JP2001287245
申请日：2001-09-20
申请人： SUMITOMO ELECTRIC INDUSTRIES , HONDA MOTOR CO LTD
发明人： HATTORI HISAO , TOKUOKA TERUKAZU , OKA TOMOO , KOYA EITARO , SUZUKI TOSHIMITSU , MARUI YUJI
IPC分类号： C22F1/043 , B22F3/17 , B22F3/20 , C22C1/04 , C22C21/02 , C22F1/00
摘要： PROBLEM TO BE SOLVED: To produce a lighter piston which has more excellent heat resistance by hot forging using rapidly solidified Al alloy powder. SOLUTION: Rapidly solidified Al alloy powder having a composition containing, by mass, 10 to 40% Si, and at least two or more metals selected from Fe, Co, Ni, Cr, Mn, Ti, and V by 3 to 11% in total, and the balance substantially Al is produced by an atomizing method. This powder is subjected to cold preliminary molding. This molding is heated at 430 to 530 deg.C so that the time for which the molding is exposed to a temperature of >=430 deg.C is limited within 5 hr, and the preliminary molding is subjected to hot plastic working into a dense body having a relative density of >=99%. This dense body is hot- forged into the rough shape of a piston, and the forging is subjected to mechanical working to obtain the piston as a finished product.

14. 发明专利

JPH02122043A AL-SI ALLOY HAVING HEAT RESISTANCE, WEAR RESISTANCE, AND HIGH TOUGHNESS AND CYLINDER LINER USING SAME 失效
公开(公告)号：JPH02122043A
公开(公告)日：1990-05-09
申请号：JP27334988
申请日：1988-10-31
申请人： HONDA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： HAGIWARA YOSHITOSHI , KOYA EITARO , HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： C22C1/10 , C22C21/00 , C22C21/02 , C22C29/12 , C22C32/00 , F02F1/00 , F02F1/08 , F02F1/10 , F16J10/04
摘要： PURPOSE:To obtain an Al-Si alloy having heat resistance, wear resistance, and high toughness by providing a structure in which respectively specified amounts of Al2O3 grains add powdered graphite having respectively specified grain sizes are dispersed in an Al-Si alloy matrix having fine primary-crystal Si. CONSTITUTION:A structure in which 3-5%, by weight, of Al2O3 grains having =1mm thickness composed of the above alloy and an external layer composed of an Al alloy for elongation of >=90% Al content and also providing circumferential- direction ruggedness or undulation to the joining interface between both layers and to the outside periphery.

15. 发明专利

JPH11236850A MANUFACTURE OF CLOSED DECK TYPE CYLINDER BLOCK 失效
公开(公告)号：JPH11236850A
公开(公告)日：1999-08-31
申请号：JP3865698
申请日：1998-02-20
申请人： HONDA MOTOR CO LTD , SHOWA DENKO KK
发明人： TANAKA MINORU , KOYA EITARO , MAKINO HIROKI , SEKIGUCHI TSUNEHISA
IPC分类号： F02F1/00 , B23K20/00 , F02F1/10
摘要： PROBLEM TO BE SOLVED: To provide a method to manufacture a closed deck type cylinder block at a low cost through a less number of works. SOLUTION: A cover material 8 to substantially close the upper surface of a water jacket 7 is positioned at the upper end part of the water jacket 7 formed at an open deck type cylinder block 1. The cover material 8 is coupled to the two sides of the water Jacket 7 for integral formation. By pressing the cover material 8 and exerting plastic fluid on a joining surface on the water Jacket 7, the cylinder block 1 and the cover material 8 are integrally intercoupled through plastic fluid diffusion joining. A low melting point alloy may be previously attached to the cover material 8.

16. 发明专利

JPH11193434A AL ALLOY FOR DIE-CAST CASTING WITH HIGH TOUGHNESS 失效
公开(公告)号：JPH11193434A
公开(公告)日：1999-07-21
申请号：JP30337098
申请日：1998-10-09
申请人： HONDA MOTOR CO LTD
发明人： YOSHINO SADAFUMI , KOIKE SEIICHI , KOYA EITARO , NAKAGAWA MASAHIKO
IPC分类号： C22C21/06
摘要： PROBLEM TO BE SOLVED: To provide an Al alloy capable of producing a die-cast casting having high toughness in an as-cast state. SOLUTION: The Al alloy has a composition consisting of, by weight, 3.0-5.5% Mg. 1.5-2.0% Mn, 0.5-0.9% Ni, and the balance Al with inevitable impurities. In this composition, Ni content, in particular, is set at values in the above range in order to increase the toughness of a die-cast casting. By this method, the amount of formation of an intermetallic compound AlMnNi can be reduced, and also this intermetallic compound can be refined.

17. 发明专利

JPH01271053A MANUFACTURE OF CYLINDER BLOCK FOR ENGINE 失效
公开(公告)号：JPH01271053A
公开(公告)日：1989-10-30
申请号：JP9987888
申请日：1988-04-22
申请人： HONDA MOTOR CO LTD
发明人： KOYA EITARO , TSUNO HIROSHI , YANAGIDA KUNIO
IPC分类号： F02F1/00 , B22D19/08
摘要： PURPOSE:To cut off the molten metal heat onto an inner cylinder and to secure the dimensional accuracy of a cylinder sleeve by installing the cylinder sleeve consisting of the inner cylinder of a wear resistant powder metal and the outer cylinder closely fitted thereto on a mold and casting the cylinder block main body. CONSTITUTION:A cylinder sleeve 3 is composed of the inner cylinder 3a made of a powder metal having a wear resistance and the outer cylinder 3b closely fitted to the outer peripheral face thereof. A rapid cooling solidified Al alloy powder is used as the powder metal and the Al alloy expansion material, etc., of A5052, etc., are used for the outer cylinder 3b. The cylinder sleeve 3 obtains a billet 7 by forming a powder metal circular columnar body 5 by fitting it to the cylindrical body 6 of Al alloy expansion material and fits to a container 10 toward the die 9 of an extruding machine 8 after heating. The die 9 and a mandrel 11 are pressed to the billet 7 by a ram 12, a cylinder sleeve 30 is obtd. and cut in the specified length. The adverse effect by the melting heat onto the cylinder is evaded, the dimensional accuracy of the cylinder sleeve is secured and the variation in wear resistant materials can be prevented.

18. 发明专利

JPH01255641A SLIDING MEMBER MADE OF SINTERED AL ALLOY 失效
公开(公告)号：JPH01255641A
公开(公告)日：1989-10-12
申请号：JP7825188
申请日：1988-04-01
申请人： HONDA MOTOR CO LTD
发明人： KOYA EITARO , HAGIWARA YOSHITOSHI
IPC分类号： F02F1/00 , B22F5/00 , C22C1/05 , C22C21/02 , F02F7/00 , F16J10/04
摘要： PURPOSE:To improve the heat resistance and wear resistance of the title member and to reduce the offensiveness against its mates by regulating the mixture of the powder in which copper and Mg are added to an Si-contg. Al alloy having specific value or below of Si grain size, specific grain size of Al2O3 and graphite powder to the material powder. CONSTITUTION:The Al alloy powder having

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