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1.发明授权Lubricant supplying system for DOHC type multi-cylinder internal combustion engine 失效DOHC型多缸内燃机润滑油供应系统
公开(公告)号：US4928641A
公开(公告)日：1990-05-29
申请号：US290313
申请日：1988-12-27
CPC分类号： F01L1/267 , F01L1/053 , F01L13/00 , F01M1/16 , F01M9/10 , F01M9/101 , F01M9/102 , F01M9/108 , F02B2275/18
摘要： A lubricant supplying system for a DOHC type multicylinder internal combustion engine comprising a plurality of cylinders arranged in series in a cylinder block, a pair of cam shafts parallel to each other and rotatably supported by a cylinder head and cam holders fixed to the cylinder head at opposite sides of the respective cylinders along the cylinder arranging direction, a plurality of cams including low speed cams corresponding to intake and exhaust valves of the respective cylinders and fixed to the cam shafts, a plurality of rocker arms in slidable contact with the respective cams corresponding to the intake and exhaust valves of the respective cylinders, and a connection switching mechanism for switching connection and disconnection of the rocker arms in response to a hydraulic pressure to vary the operating states of the valves responsive to the operating state of the engine, wherein a hydraulic pressure supply passage independent from an oil supply passage for supplying a hydraulic pressure to the connection switching mechanism is provided in the cylinder head substantially at its center portion along the cylinder arranging direction so as to extend vertically, and a branch oil passage is provided to have intake and exhaust side portions disposed in one cam holder of substantially center location along the cylinder arranging direction for communicating with the upper end of the hydraulic pressure supply passage to supply oil to the slidably contacting portions of low speed cams of the respectively cylinders at both intake and exhaust sides with the rocker arms and the cam journal portions of the cam shafts.
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公开(公告)号：US4883027A
公开(公告)日：1989-11-28
申请号：US276403
申请日：1988-11-23
CPC分类号： F01L1/267 , F01M9/10 , F01L2001/0537 , F01L2001/34436 , F01M9/101 , F01M9/102 , F01M9/108 , F02B2275/18
摘要： A drive cam follower operatively connected to an engine valve and a free cam follower capable of becoming free relative to the engine valve are adjacently disposed and adapted to impart in mutually different modes of operation in response to said engine valve rotation of a cam shaft. A connection change-over mechanism is provided between the cam followers and is capable of changing-over the interconnection and disconnection thereof, and resilient biasing means is provided between the free cam follower and the engine body for resiliently urging the free cam follower toward the cam shaft. The resilient biasing means comprises an urging piston slidably received in the engine body for abutment against the free cam follower, and a spring arrangement interposed between the urging piston and the engine body to resiliently bias the urging piston in a direction to abut against the free cam follower. The spring arrangement may comprise series-related springs having different spring constant with one of the springs having a non-linear load characteristic. A vent opening and a lubrication arrangement are provided to facilitate operation of the piston. The urging piston is provided, at its end closer to the free cam follower, with an abutment formed with a smaller diameter to abut against the free cam follower. This facilitates assembly of the resilient biasing means to the engine body, and makes it possible to dispose the resilient biasing means in proximity to a pivoting point of the free cam follower.
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公开(公告)号：US4911112A
公开(公告)日：1990-03-27
申请号：US290171
申请日：1988-12-27
IPC分类号： F01L1/26
CPC分类号： F01L1/267
摘要： A valve operating system for internal combustion engines comprises a free cam follower which is disposed between first and second drive cam followers operatively connected to engine valves and which is capable of becoming free relative to the engine valves, first and second guide holes respectively provided in the first and second drive cam followers with their axes corresponding to each other. The guide holes is opened to the free cam follower. A double open-ended guide hole is provided in the free cam follower in correspondence to the axes of the first and second guide holes. A first change-over pin is axially slidably received in the first guide hole and adapted to be fitted into the guide hole, and a second change-over pin is axially slidably received in said guide hole with one end thereof abutting against the first change-over pin, and is adapted to be fitted into said second guide hole. A restricting pin is axially slidably received in said second guide hole while being spring-biased toward said second change-over pin, with one end thereof abutting against the other end of said second change-over pin. This construction ensures that fitting of the first change-over pin into the guide hole as well as fitting of the second change-over pin into the second guide hole can be reliably performed.
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公开(公告)号：US4485770A
公开(公告)日：1984-12-04
申请号：US333464
申请日：1981-12-22
CPC分类号： B22F3/24 , C22C33/0257 , F01L3/02 , Y10T74/20882
摘要： A material, and a process for producing same, for fabricating components of valve-actuating mechanisms of internal combustion engines, the material comprising an iron-base sintered alloy, which comprises, by weight: 2-7% Cr (chromium); 0.1-1.5% Mo (molybdenum); 0.5-7% W (tungsten); 0.1-3% V (vanadium); and 0.5-3% C (carbon). Upon being subjected to a slide-contact with another member, the material exhibits a high degree of abrasion resistance and at the same time is capable of effectively protecting the material of a member operatively cooperating therewith in slide-contact. The material is thus highly suitable for very frequent slide-contact with a cam member or the like.
摘要翻译： 一种材料及其制造方法，用于制造内燃机的阀致动机构的部件，所述材料包括铁基烧结合金，其包含：2-7％的Cr（铬）; 0.1-1.5％Mo（钼）; 0.5-7％W（钨）; 0.1-3％V（钒）; 和0.5-3％C（碳）。 当与另一个构件进行滑动接触时，材料表现出高度的耐磨性，并且同时能够有效地保护与滑动接触可操作地配合的构件的材料。 因此，该材料非常适合于非常频繁地与凸轮构件等的滑动接触。
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公开(公告)号：US4923183A
公开(公告)日：1990-05-08
申请号：US258746
申请日：1988-10-17
申请人： Tsutomu Saka
发明人： Tsutomu Saka
IPC分类号： F16F1/04
CPC分类号： F16F1/042
摘要： A non-circular cross-section coil spring, wherein a spring wire having a non-circular cross-section shape is coiled into such configuration that a major diameter of the cross-section is directed in the direction intersecting with a center line of the spring. Torsion is preliminarily given to at least a part of the spring wire so that the coil spring inner circumferential surface side of the above-mentioned major diameter may be deviated to a free end side of the spring with reference to the reference plane of extension and contraction of the coil spring in the case where the coil spring is a compression coil spring, but to the side of the aforementioned reference plane of extension and contraction in the case where the coil spring is a tension coil spring. In a coil spring comprising a larger pitch portion and a smaller pitch portion, a large angle of torsion is preliminarily given to the larger pitch portion and a small angle of torsion is preliminarily given to the smaller pitch portion. Upon application of a load, an angle of torsion of the spring wire becomes zero or nearly zero, thereby increase of the maximum shearing stress generated at the inner circumference of the coil spring can be suppressed, and also sharing stress in the spring wire can be made uniform.
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6.发明授权
公开(公告)号：US5733214A
公开(公告)日：1998-03-31
申请号：US657464
申请日：1996-05-29
申请人： Katsuaki Shiki , Kaoru Shimamura , Tsutomu Saka
发明人： Katsuaki Shiki , Kaoru Shimamura , Tsutomu Saka
CPC分类号： F01L1/02 , F01L1/024 , F02B67/06 , F16H7/1209 , F01L2001/0537 , F02B2275/18 , F16H2007/0887
摘要： In a system for adjusting the tension of an endless transmitting belt in an internal combustion engine, a control system automatically adjusts the tension to be applied from a tensioner to the endless transmitting belt. The control system includes a driving-side rotational state detecting device for detecting the rotational state of a driving wheel which drives the endless transmitting belt. A driven-side rotational state detecting device detects the rotational state of a driven wheel driven by the endless transmitting belt. A control unit calculates a difference in rotational phase between the driving and driven wheels from results of detection by both rotational state detecting devices and controls the operation of a tension changing device in accordance with the difference in rotational phase. Thus, it is possible to accurately and quickly accommodate a very small variation in tension of the transmitting belt without specially using a strain gauge.
摘要翻译： 在用于调节内燃机中的环形传送带的张力的系统中，控制系统自动调节从张紧器施加到环形传动带的张力。 控制系统包括用于检测驱动环形传动带的驱动轮的旋转状态的驱动侧旋转状态检测装置。 从动侧旋转状态检测装置检测由环形传动带驱动的从动轮的旋转状态。 控制单元通过两个旋转状态检测装置的检测结果来计算驱动轮和从动轮之间的旋转相位差，并且根据旋转相位差来控制张力改变装置的操作。 因此，无需特别使用应变仪就可以准确而快速地适应传动皮带张力的非常小的变化。
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公开(公告)号：US5529641A
公开(公告)日：1996-06-25
申请号：US354041
申请日：1994-12-06
申请人： Tsutomu Saka , Akira Fujiwara , Noriyuki Yamada
发明人： Tsutomu Saka , Akira Fujiwara , Noriyuki Yamada
摘要： A cast iron slide member is formed from cast iron comprising 3.0% to 3.6% by weight of carbon (C), 1.6% to 2.4% by weight of silicon (Si), 0.2% to 1.5% by weight of manganese (Mn), 0.5% to 1.5% by weight of chromium (Cr), 1.5% to 3.0% by weight of nickel (Ni), 0.5% to 1.0% by weight of molybdenum (Mo), 0.0003% to 0.1% by weight of at least one chilling promoting element E.sub.L selected from the group consisting of bismuth (Bi), tellurium (Te) and cerium (Ce), and the balance of iron (Fe) and unavoidable impurities. The slide member has a chilled slide portion. Thus, it is possible to improve the scuffing and pitting resistances of the slide portion.
摘要翻译： 铸铁滑动构件由铸铁形成，其包含3.0重量％至3.6重量％的碳（C），1.6重量％至2.4重量％的硅（Si），0.2重量％至1.5重量％的锰（Mn）， 0.5重量％至1.5重量％的铬（Cr），1.5重量％至3.0重量％的镍（Ni），0.5重量％至1.0重量％的钼（Mo），0.0003重量％至0.1重量％的至少一种 选自由铋（Bi），碲（Te）和铈（Ce）组成的组的冷却促进元素EL，余量为铁（Fe）和不可避免的杂质。 滑动构件具有冷却的滑动部分。 因此，可以改善滑动部分的磨损和点蚀电阻。
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8.发明授权
公开(公告)号：US5466276A
公开(公告)日：1995-11-14
申请号：US087079
申请日：1993-07-07
申请人： Katsuaki Sato , Katsuhiko Tominaga , Tsutomu Saka , Osamu Kawamura , Teruo Takahashi , Arata Kakiuchi
发明人： Katsuaki Sato , Katsuhiko Tominaga , Tsutomu Saka , Osamu Kawamura , Teruo Takahashi , Arata Kakiuchi
CPC分类号： C22C33/0292 , C22C33/0207 , C22C33/0228
摘要： A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt. % of Al consisting essentially the remainder of Fe, wherein the alloy body contains an austenite phase which is capable of martensitic transformation.
摘要翻译： 二次硬化型高温耐磨烧结合金体，其含有0.4〜15重量％ 选自W，Mo，V，Ti，Nb，Ta和B的至少一种金属碳化物形成元素的％; 5〜35重量％ ％的至少一种奥氏体形成元素选自Ni，Co，Cu和Cr; 0.2〜1.2重量％ C％ 和0.04至0.2wt。 Al的％基本上由余下的Fe组成，其中合金体含有能够马氏体转变的奥氏体相。
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公开(公告)号：US4952199A
公开(公告)日：1990-08-28
申请号：US386077
申请日：1989-07-28
申请人： Tsutomu Saka , Katsuaki Sato
发明人： Tsutomu Saka , Katsuaki Sato
IPC分类号： F16H55/17
CPC分类号： F16H55/171
摘要： In a toothed sintered pulley comprising a rim having a large number of teeth on its outer peripheral surface and lightening grooves at those portions of its inner peripheral surface which correspond to the individual teeth, a boss located radially inside of the rim, and a connection which connects the inner peripheral surface of the rim with an outer peripheral surface of the boss, the porosity of the rim is set larger than that of the boss. In addition, the connection is connected to axially intermediate portions of the inner peripheral surface of the rim, and lands are provided in a one-side half of the rim projecting from this connection in one of axial directions, so that each land is located between the two adjacent lightening grooves, with the radial thickness of the land being gradually increased from an outer end face of the one-side half toward the connection. This makes it possible to provide a toothed sintered pulley which is lightweight; in which any backlash noise due to meshing of the rim with a belt can be reduced, and the strength of the boss cannot be injured, and in which the rigidity of the one-side half in the rim is improved while suppressing the increase in weight thereof to the utmost.
摘要翻译： 在一种齿形烧结带轮中，包括在其外周表面上具有大量齿的边缘和对应于各个齿的内周表面的那些部分处的减光槽，位于轮辋径向内侧的凸台和连接件 将边缘的内周面与凸台的外周面连接，将轮辋的孔隙设定得大于凸台的孔隙率。 另外，连接件连接到轮辋的内周表面的轴向中间部分，并且在轴向方向上从该连接突出的边缘的一侧的一侧设置有平台，使得每个平台位于 两个相邻的发光槽，其中脊的径向厚度从一侧半部的外端面朝着连接逐渐增大。 这使得可以提供重量轻的齿形烧结带轮; 其中可以减少由于轮辋与带的啮合而产生的任何间隙噪声，并且凸台的强度不会受到损伤，并且其中边缘中的一侧半部的刚度在改善同时抑制重量增加 最大限度地。
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公开(公告)号：US5676192A
公开(公告)日：1997-10-14
申请号：US566605
申请日：1995-12-04
CPC分类号： B22D19/00
摘要： In carrying out a cast-in process, a cast-in insert member is placed into a cast forming cavity in a casting mold, and a casting is conducted. The cast-in insert member has a barrier layer on its non-deposited surface for inhibiting the deposition of a molten metal. During casting, a portion of a molten metal is introduced to a heating chamber on the side of the barrier layer to come into contact with the barrier layer. Thus, the cast-in insert member can be heated not only from the side of its deposited surface, but also from the side of its non-deposited surface, thereby providing an enhanced strength of deposition of the cast-in insert member.
摘要翻译： 在进行铸造工艺中，将铸造插入件放置在铸模中的铸造成型腔中，并进行铸造。 铸造插入件在其非沉积表面上具有阻挡熔融金属沉积的阻挡层。 在铸造期间，将一部分熔融金属引入阻挡层一侧的加热室中以与阻挡层接触。 因此，铸造插入构件不仅可以从其沉积表面的一侧，而且从其非沉积表面的一侧加热，从而提供增加的铸造插入构件的沉积强度。
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