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公开(公告)号:EP0040520B1
公开(公告)日:1985-10-30
申请号:EP81302160.7
申请日:1981-05-15
发明人: Bruni, Ludovico
IPC分类号: B23P9/02
CPC分类号: B23P9/02 , B23P15/10 , Y10T29/49266
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公开(公告)号:EP0005910B1
公开(公告)日:1984-07-25
申请号:EP79300743.6
申请日:1979-05-02
CPC分类号: C22C21/02 , F02F2007/009 , F05C2201/021
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公开(公告)号:EP0040520A2
公开(公告)日:1981-11-25
申请号:EP81302160.7
申请日:1981-05-15
发明人: Bruni, Ludovico
IPC分类号: B23P9/02
CPC分类号: B23P9/02 , B23P15/10 , Y10T29/49266
摘要: A method of shaping the gudgeon pin bores formed in gudgeon pin bosses of pistons comprises introducing into the bores portions of a shaped pin. A load is applied to the pin and the direction of the load and the shape of the pin are chosen so that areas of bore-defining walls of the bosses subjectto high stresses in use, and therefore liable to crack, are radially outwardly deformed to reduce the incidence of cracks.
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公开(公告)号:EP0005910B2
公开(公告)日:1988-04-27
申请号:EP79300743
申请日:1979-05-02
CPC分类号: C22C21/02 , F02F2007/009 , F05C2201/021
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公开(公告)号:EP0191243A2
公开(公告)日:1986-08-20
申请号:EP85309377.1
申请日:1985-12-20
发明人: Raggi, Lodovico
CPC分类号: F02F3/02 , F05C2201/021 , F05C2251/042 , F16J9/22
摘要: An aluminium or aluminium alloy cast piston has a piston ring carrier of a ferrous material encast therein. The carrier has sides which converge towards their radially inner ends. As a result of this, and as a result of a lesser coefficient of thermal expansion of the ferrous material of the carrier as compared with the aluminium or aluminium alloy of the piston body, solidification of the piston material causes elastic outward expansion of the carrier which is sufficient to prevent any clearance occurring between the two parts, even at operating temperatures. Thus the carrier is not, and need not, be locked to the piston body against radial movement.
摘要翻译: 铝或铝合金铸造活塞具有加强在其中的铁质材料的活塞环载体。 载体具有朝向其径向内端会聚的侧面。 其结果是,与活塞体的铝或铝合金相比,作为载体的铁质材料的较小的热膨胀系数的结果,活塞材料的固化引起载体的弹性向外膨胀, 足以防止在两个部件之间发生任何间隙,即使在工作温度下。 因此,载体不是而且不需要被锁定到活塞体上以防径向移动。
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公开(公告)号:EP0040520B2
公开(公告)日:1990-02-28
申请号:EP81302160.7
申请日:1981-05-15
发明人: Bruni, Ludovico
IPC分类号: B23P9/02
CPC分类号: B23P9/02 , B23P15/10 , Y10T29/49266
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公开(公告)号:EP0191243A3
公开(公告)日:1987-01-14
申请号:EP85309377
申请日:1985-12-20
发明人: Raggi, Lodovico
CPC分类号: F02F3/02 , F05C2201/021 , F05C2251/042 , F16J9/22
摘要: An aluminium or aluminium alloy cast piston has a piston ring carrier of a ferrous material encast therein. The carrier has sides which converge towards their radially inner ends. As a result of this, and as a result of a lesser coefficient of thermal expansion of the ferrous material of the carrier as compared with the aluminium or aluminium alloy of the piston body, solidification of the piston material causes elastic outward expansion of the carrier which is sufficient to prevent any clearance occurring between the two parts, even at operating temperatures. Thus the carrier is not, and need not, be locked to the piston body against radial movement.
摘要翻译: 铝或铝合金铸造活塞在其中包含铁质材料的活塞环托架。 载体具有朝向其径向内端收敛的侧面。 因此,由于载体的铁质材料与活塞体的铝或铝合金相比热膨胀系数较小,因此活塞材料的凝固导致载体的弹性向外扩张 即使在工作温度下也足以防止两个部件之间发生任何间隙。 因此,托架不会也不需要被锁定在活塞体上以防止径向运动。
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公开(公告)号:EP0040520A3
公开(公告)日:1983-09-21
申请号:EP81302160
申请日:1981-05-15
发明人: Bruni, Ludovico
IPC分类号: B23P09/02
CPC分类号: B23P9/02 , B23P15/10 , Y10T29/49266
摘要: A method of shaping the gudgeon pin bores formed in gudgeon pin bosses of pistons comprises introducing into the bores portions of a shaped pin. A load is applied to the pin and the direction of the load and the shape of the pin are chosen so that areas of bore-defining walls of the bosses subjectto high stresses in use, and therefore liable to crack, are radially outwardly deformed to reduce the incidence of cracks.
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公开(公告)号:EP0005910A1
公开(公告)日:1979-12-12
申请号:EP79300743.6
申请日:1979-05-02
CPC分类号: C22C21/02 , F02F2007/009 , F05C2201/021
摘要: In a piston and cylinder assembly in which the piston is made of an aluminium alloy, the wall of the cylinder contacted by the piston is formed of a hyper-eutectic silicon aluminium alloy having the composition by weight percentages of silicon (Si) 12 - 20%; copper (Cu) 0.5 - 5%; iron (Fe) 1.0 - 6%: magnesium (Mg) 0.2 - 2%; nickel (Ni) 0.5 - 4%; and optionally manganese (Mn) 0 - 5%; cobalt (Co) 0 - 3%; chromium (Cr) 0 - 3%; tin (Sn) 0 - 8%; titanium (Ti) 0 - 0.3%; lead (Pb) 0 - 5%: and molybdenum (Mo) 0 - 5%, the remainder being aluminium.
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