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公开(公告)号：US06566990B2
公开(公告)日：2003-05-20
申请号：US09729348
申请日：2000-12-05
申请人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Kouichi Sogabe
发明人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Kouichi Sogabe
IPC分类号： H01F708
摘要： To lighten the weight of an electromagnetic actuator and a valve-open-close mechanism by forming the stems from a lighter material than conventional. A pair of electromagnets formed of stators and coils are opposed to each other with a gap therebetween. An armature is disposed in the gap so as to be reciprocable between one electromagnet and the other electromagnet by the electromagnets. A first stem for transmitting the movement of the armature from one electromagnet toward the other electromagnet to a valve of the internal combustion engine is inserted in a guide hole formed in the stator of one electromagnet. The first stem is formed of a lighter material than the armature to lighten the weight of the electromagnetic actuator and a valve-open-close mechanism of an internal combustion engine.
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公开(公告)号：US06371063B1
公开(公告)日：2002-04-16
申请号：US09731818
申请日：2000-12-08
申请人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Takatoshi Takikawa , Toshihiko Kaji , Nozomu Kawabe , Kouichi Sogabe
发明人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Takatoshi Takikawa , Toshihiko Kaji , Nozomu Kawabe , Kouichi Sogabe
IPC分类号： F01L904
摘要： It is proposed to lessen the weight and improve the mechanical strength of a retainer of a valve open-close mechanism driven by an electromagnetic actuator used in an automotive internal combustion engine. The electromagnetic actuator is mounted in a housing mounted on an internal combustion engine body. A first stem has its tip abutting the valve, which is provided with a retainer and carries a first coil spring. A second stem is provided on the other side of an armature. The second stem has a retainer. Between this retainer and the housing, a second coil spring is mounted. At least one of these parts is made of a metal smaller in specific weight than iron or its alloy. Each retainer has a boss and an arcuate corner portion having a radius of curvature R of 1.0 mm or over between a spring abutting surface and the boss to relieve stress concentration.
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公开(公告)号：US06367433B2
公开(公告)日：2002-04-09
申请号：US09731027
申请日：2000-12-07
申请人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Hisanori Ohara
发明人： Hitoshi Oyama , Takao Nishioka , Kenji Matsunuma , Hisanori Ohara
IPC分类号： F01L904
CPC分类号： F01L3/04 , F01L1/462 , F01L3/02 , F01L3/10 , F01L9/04 , Y10S977/725 , Y10S977/777
摘要： A valve-open-close mechanism is proposed which has parts designed to reduce friction during sliding. The electromagnetic actuator comprises a pair of electromagnets each having a stator and a coil opposed to each other with a gap therebetween, an armature disposed in the gap, and a first stem for transmitting to external the movement of said armature. A retainer and a first return spring are provided on the valve. A second stem is provided at other side of the armature and another retainer and a second return spring are provided for the second stem. A coating film is formed on at least one of the surface or end face of the stem portion of the valve, end faces of the first return spring or second return spring, spring bearing end faces of the retainers, surface or end face of the second stem, and the surface of the armature.
摘要翻译： 提出了一种阀门开闭机构，其具有旨在减少滑动期间的摩擦的部件。 电磁致动器包括一对电磁体，每个电磁体具有彼此相对的定子和线圈，间隔开的电枢，设置在间隙中的电枢和用于向外部传递所述电枢的运动的第一杆。 在阀上设有保持器和第一复位弹簧。 第二杆设置在电枢的另一侧，为第二杆提供另一保持器和第二复位弹簧。 在阀的杆部的表面或端面中的至少一个上形成涂膜，第一复位弹簧或第二复位弹簧的端面，保持器的弹簧支承端面，第二复位弹簧的表面或端面 杆和电枢的表面。
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公开(公告)号：US06380832B2
公开(公告)日：2002-04-30
申请号：US09731817
申请日：2000-12-08
IPC分类号： H01F300
摘要： An electromagnetic actuator for an automotive internal combustion engine is provided which has a stator, the weight of which is reduced. The electromagnetic actuator has a pair of electromagnets each made up of a stator and a coil, an armature disposed between the pair of electromagnets so as to be reciprocable therebetween, and a first stem provided on one side of the armature for transmitting the movement of the armature to external. The stator is formed by powder molding.
摘要翻译： 提供了一种用于汽车内燃机的电磁致动器，其具有减轻其重量的定子。 电磁致动器具有一对电磁体，每对电磁体由定子和线圈组成，电枢设置在一对电磁体之间以便在其间往复运动;以及第一杆，设置在电枢的一侧，用于传递 电枢到外部。 定子通过粉末成型形成。
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公开(公告)号：US5372099A
公开(公告)日：1994-12-13
申请号：US174471
申请日：1993-12-28
申请人： Kenji Matsunuma , Takao Nishioka , Akira Yamakawa
发明人： Kenji Matsunuma , Takao Nishioka , Akira Yamakawa
CPC分类号： F01L1/143 , F01L1/16 , F01L1/205 , Y10T74/2107
摘要： The preset invention provides a ceramic adjusting shim capable of minimizing the abrasion of parts contacting the adjusting shim, for example, a cam and a tappet. The ceramic adjusting shim is produced from a ceramic material and has a surface roughness of 0.05 to 0.2 .mu.m in ten-point average roughness Rz.
摘要翻译： 本发明提供一种陶瓷调节垫片，其能够最小化与调节垫片接触的部件的磨损，例如凸轮和挺杆。 陶瓷调节垫片由陶瓷材料制成，并且在十点平均粗糙度Rz中具有0.05至0.2μm的表面粗糙度。
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公开(公告)号：US5358797A
公开(公告)日：1994-10-25
申请号：US911914
申请日：1992-07-10
IPC分类号： C04B35/584 , C04B35/593 , C04B35/597 , C04B35/599 , C04B38/00 , F01L1/14 , F01L1/16 , F01L1/20
CPC分类号： C04B35/593 , C04B35/597 , F01L1/143 , F01L1/16 , F01L1/205 , Y10T428/265
摘要： The present invention provides an improved adjusting shim used in a valve train for an internal combustion engine for an automobile. The adjusting shim produced from a base material consisting of a ceramic material containing 80 to 98 wt. % of silicon nitride and/or sialon and has a porosity of not more than 3%, a bending strength of not less than 1.0 GPa and an impact compressive elastic limit (Hugoniot elastic limit) of not less than 15 GPa, wherein the base material is provided on the surface thereof which contacts a cam with a ceramic surface layer having a composition different from that of the base material and a hardness lower than that of the base material. The adjusting shim of the present invention enables a power loss of a valve train to be minimized; the abrasion resistance thereof to be improved; and the fuel economy, the performance and durability of an internal combustion engine to be improved.
摘要翻译： 本发明提供一种用于汽车内燃机的气门机构中使用的改进的调节垫片。 由由含有80〜98重量％的陶瓷材料构成的基材制成的调整垫片 ％的氮化硅和/或赛隆，并且具有不大于3％的孔隙率，不小于1.0GPa的弯曲强度和不小于15GPa的冲击压缩弹性极限（Hugoniot弹性极限）），其中所述基材 在其表面上设置有与具有不同于基材的组成的陶瓷表面层的凸轮接触，并且硬度低于基材的硬度。 本发明的调节垫片能够使气门机构的功率损失最小化; 其耐磨性得到提高; 并且燃料经济性，内燃机的性能和耐久性得到改善。
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公开(公告)号：US5275772A
公开(公告)日：1994-01-04
申请号：US957506
申请日：1992-10-05
IPC分类号： C04B35/593 , C04B35/597 , C04B35/58
CPC分类号： C04B35/5935 , C04B35/597
摘要： The present invention relates to a silicon nitride sintered body [wherein the composition of Si.sub.3 N.sub.4 -first aid (Y.sub.2 O.sub.3 +MgO)-second aid (at least one of Al.sub.2 O.sub.3 and AlN)] falls within a range defined by lines joining points A, B, C and D in FIG. 1, the crystal phase of the sintered body contains both .alpha.-Si.sub.3 N.sub.4 and .beta.'-sialon, and the relative density is 98% or more. This sintered body is produced by subjecting a green compact of the above-described source to primary sintering in a nitrogen gas atmosphere at 1300 to 1700.degree. C. so that the relative density reaches 96% or more, and the precipitation ratio of the .alpha.-Si.sub.3 N.sub.4 crystal phases to the .beta.'-sialon crystal phase in the sintered body is in the range of from 40:60 to 80:20; and then subjecting the primary sintered body to secondary sintering in a nitrogen gas atmosphere at 1300 to 1700.degree. C. so that the relative density reaches 98% or more. The sintered body has superior strength properties, especially at ordinary temperatures, and can be produced with a high productivity in a high yield at a low cost.
摘要翻译： 本发明涉及一种氮化硅烧结体[其中，Si 3 N 4 - 急救（Y 2 O 3 + MgO） - 辅助剂（Al 2 O 3和AlN中的至少一种）的组成]落在由连接点A，B， C和D。 如图1所示，烧结体的结晶相含有α-Si 3 N 4和β'-Sialon，相对密度为98％以上。 该烧结体是通过使上述源的生坯在1300〜1700℃的氮气气氛中进行一次烧结而制成的，使得相对密度达到96％以上， Si3N4晶相与烧结体中的β' - 赛隆结晶相的比例范围为40:60至80:20; 然后在1300〜1700℃的氮气气氛中使一次烧结体进行二次烧结，使得相对密度达到98％以上。 该烧结体具有优异的强度特性，特别是在普通温度下，可以低成本高产率地以高生产率生产。
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公开(公告)号：US5647313A
公开(公告)日：1997-07-15
申请号：US327313
申请日：1994-10-21
CPC分类号： F02F7/0087 , F01L1/047 , F01L1/16 , F01L1/205 , F01L2009/0411 , F05C2253/16
摘要： A combination of an adjusting shim and a cam used in a valve train in an internal combustion engine for automobiles, the adjusting shim composed of a ceramic material which sets the surface roughness of a sliding surface of the adjusting shim with respect to a cam to not more than 0.1 .mu.m in ten-point mean roughness Rz, and which contains not less than 60 vol. % of silicon nitride or sialon, and the cam composed of cast iron a surface of which is chill hardened and then provided with a phosphate film thereon. The combination of an adjusting shim and a cam is capable of smoothing a sliding surface of the cam by the break-in of the part even if the cam is not subjected to a super-precision finishing process; preventing the seizure and abnormal abrasion of sliding surfaces; stabilizing a smoothed condition of the sliding surfaces of the cam and shim for a long period of time; and providing excellent sliding characteristics of the sliding surfaces owing to a decrease in the friction coefficient thereof.
摘要翻译： 用于汽车内燃机的气门机构中使用的调节垫片和凸轮的组合，由陶瓷材料组成的调节垫片，其将调节垫片的滑动表面的表面粗糙度相对于凸轮设置为不 十点平均粗糙度Rz超过0.1μm，含有不低于60vol。 ％的氮化硅或赛隆，以及由铸铁组成的凸轮，其表面被冷却硬化，然后在其上提供磷酸盐膜。 调整垫片和凸轮的组合能够通过零件的插入来平滑凸轮的滑动表面，即使凸轮不经受超精密精加工过程; 防止滑动表面的卡住和异常磨损; 稳定凸轮和垫片的滑动表面的平滑状态长时间; 并且由于其摩擦系数的降低而提供滑动表面的优异的滑动特性。
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公开(公告)号：US5225127A
公开(公告)日：1993-07-06
申请号：US829571
申请日：1992-02-03
IPC分类号： C04B35/593
CPC分类号： C04B35/5935
摘要： There is provided a process for the production of a sintered article which comprises steps ofshaping a raw material powder comprising silicon nitride,thermally treating a shaped article in a non-oxidizing atmosphere at a temperature of 1300.degree. to 1650.degree. C. for at least 2 hours to form .beta.-silicon nitride of not less than 85% calculated from X-ray diffraction patterns and to increase a relative density of the article to not less than 80%, preferably to 80 to 85 %, andsintering the thermally treated article at a temperature of 1700.degree. to 2000.degree. C.
摘要翻译： 提供了一种生产烧结制品的方法，该方法包括以下步骤：使含有氮化硅的原料粉末成形，在1300℃至1650℃的温度下在非氧化性气氛中对成形制品进行热处理，至少 2小时以形成由X射线衍射图计算的不小于85％的β-氮化硅，并将制品的相对密度提高至不小于80％，优选至80至85％，并将热处理物品 在1700〜2000℃的温度下
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10.发明授权
公开(公告)号：US5346869A
公开(公告)日：1994-09-13
申请号：US175490
申请日：1993-12-29
IPC分类号： C04B35/584 , C04B35/593 , C04B35/597 , F01L1/20 , F02B3/06 , F02F7/00 , C04B35/58
CPC分类号： C04B35/584 , C04B35/5935 , C04B35/597 , F01L1/205 , F02F7/0087 , F02B3/06 , F05C2203/0895
摘要： Described are sintered silicon nitride bodies useful as materials for parts required to have strength, especially excellent impact strength for items such as automobile parts and machine parts. The sintered Si.sub.3 N.sub.4 bodies contain 80-98 wt. % of silicon nitride and have a porosity not higher than 3% and an shock compressive elasticity limit of at least 15 GPa.
摘要翻译： 描述了可用作对于诸如汽车部件和机器部件的物品具有强度，特别优异的冲击强度的部件的材料的烧结氮化硅体。 烧结的Si 3 N 4体含有80-98wt。 ％的氮化硅，并且具有不高于3％的孔隙率和至少15GPa的冲击压缩弹性极限值。
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