• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A tappet for cam operation as in an engine valve train has a cavity between a cam-contacting surface and the body of the tappet for allowing the cam-contacting surface to deflect theretoward when contacted by the cam, whereby stresses therein are reduced and the cam-contacting surface can be made from a hard, brittle material.
    公开号:SU1232133A3
    申请号:SU843709067
    申请日:1984-03-09
    公开日:1986-05-15
    发明作者:Фурманн Вольфганг
    申请人:М.А.Н.Машиненфабрик Аугсбург-Нюрнберг Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering and can be used in the timing of internal combustion engines.
    She figure 1 shows the plunger for valve actuator 5, section; figure 2 - the base of the pusher.
    The pusher contains a massive rod 1 made of cheap material, for example, cast iron, and made from a highly plastic material, such as zirconium oxide, the base 2, which along the outer edge and also on the side surfaces is connected to the rod 1 by means of 15 soldering or gluing. Between the base 2 of the pusher, on which the cam drive (not shown), and the rod 1 in its lower end face is made of the cavity 3 in the form of a ball 20 segment. The upper end of the rod is provided with a transfer surface 4, made in the form of a bogus, interacting with the drive parts mainly with a rod (not shown).
    The surface 5 of the base 2, an interaction with a cam, is made convex, and the curvature of the convexity is made in accordance with the dependence
    y G) (a. - 0.75 X. - xChia / x) henna, - {co-ordinates of profile
    base line of the pusher, x measured in mm, y in microns,
    a and h are the radius and thickness of the base of the pusher, mm, respectively.
    5- 5
    about
    five
    0
    F is the maximum pressing force between the cam and the pusher, H, E is the elastic modulus of the base material of the pusher, n / mm,
    p is the coefficient of lateral compression of the base material of the pusher.
    In FIG. 2, the index d denotes the flattening diameter under the action of the Hertz compression force, which is obtained under the action of the force F. In this zone, the above formula is not applicable and the convexity is determined from the point of view of manufacture.
    When running the cam on the surface 5 of the base 2 occurs deflection of the latter. This deflection reduces significant local compression forces across Hertz, consequently, wear is reduced and minor errors in the direction of the pusher axis are compensated.
    The diameter of the D base of the pusher and its thickness h must be such that the elastic deflection of the base 2 of the pusher during the load time of the actuator cam under the maximum force generated by the actuator cam exactly matches the curvature of the surface convexity of the cam 5. equal to 3-10 microns.
    Since the base deflection is approximately as great as the convexity, it is possible to manufacture the base of the pusher from materials such as titanium carbide, zirconium oxide, alkane oxide, and silicon carbide.
    figl
    Editor A. Lezhnin
    FIG. 2
    Compiled by E. Obusheva
    Tehred V. Kadar Proofreader M. Sharoshi
    Order 2665/60 Circulation 500 Subscription VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and polygraphic enterprise, Uzhgorod, st. Design, And
    权利要求:
    Claims (2)
    [1]
    A push rod for driving gas distribution valves in a piston engine, mainly in an internal combustion engine, comprising a rod facing the cam base, provided with a surface interacting with the cam and made of highly elastic material, and a transmission surface made in the form of a thrust bearing and interacting with the parts of the drive, mainly with a rod, and between the base of the pusher and the transfer surface is made a cavity that allows springing of the base of the pusher, distinguishing: in order to reduce wear, the pusher base is made of sintered high-strength materials or ceramics, for example titanium carbide, zirconium oxide, aluminum oxide or silicon carbide, and the base surface interacting with the cam is made convex, and the convexity curvature is made on according to dependency
    240 F (1 - / **) Eh 3 (a 2
    - 0.75x 2
    - x 2 a / x), where x and y are the coordinates of the profile line of the base of the pusher, and h and respectively the radius and thickness of the base of the pusher j
    F is the maximum pressure between the cam and the pusher;
    E is the modulus of elasticity of the material of the base of the pusher,
    - the coefficient of transverse compression of the material of the base of the pusher.
    [2]
    2V δδίΖδη-Tis
    1 . 1232133
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2542371A1|1984-09-14|
    SE457895B|1989-02-06|
    US4508067A|1985-04-02|
    IT1175448B|1987-07-01|
    ZA841319B|1984-10-31|
    GB8406427D0|1984-04-18|
    SE8400652L|1984-09-11|
    SE8400652D0|1984-02-08|
    DE3308550A1|1984-09-13|
    JPS59218315A|1984-12-08|
    GB2140119A|1984-11-21|
    FR2542371B1|1986-09-26|
    IT8419964D0|1984-03-09|
    DE3308550C2|1989-08-24|
    GB2140119B|1985-12-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1402226A|1921-01-03|1922-01-03|John A Germonprez|Valve tappet|
    GB202955A|1922-08-22|1923-11-22|Yarnall Waring Co|Improvements in and relating to blow-off valves|
    US1496131A|1924-01-05|1924-06-03|Rich Steel Products Company|Tappet|
    DE745701C|1940-07-13|1944-03-16|Adolf Roebig|Valve lifters, especially for internal combustion engines|
    DE928744C|1949-12-20|1955-06-10|Adolf Roebig|Valve lifters, especially for internal combustion engines|
    US2983991A|1956-02-23|1961-05-16|Chrysler Corp|Valve tappet and method of making|
    AT215217B|1958-10-29|1961-05-25|Bundy Tubing Co|Push rod and process for their manufacture|
    US3301240A|1965-06-03|1967-01-31|Miroslaw J Peresada|Hydraulic valve lifter|
    DE2835912C2|1978-08-16|1981-12-03|M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg|Flat tappets for valve drives|
    DK155827C|1979-01-04|1989-10-09|Commw Scient Ind Res Org|CERAMIC MATERIAL BASED ON ZIRCONIUM OXIDE IN PART STABILIZED WITH MAGNESIUM OXIDE, ITS MANUFACTURING AND ARTICLES MANUFACTURED BY THE MATERIAL|
    US4768476A|1981-02-20|1988-09-06|Stanadyne, Inc.|Tappet with ceramic camface|JPS60103082A|1983-11-09|1985-06-07|Ngk Insulators Ltd|Metal ceramic bonded body and manufacture|
    GB8333933D0|1983-12-20|1984-02-01|Bl Tech Ltd|Bucket-type tappet|
    US4806040A|1987-02-12|1989-02-21|Cummins Engine Company, Inc.|Ceramic ball and socket joint|
    US4794894A|1987-03-05|1989-01-03|Cummins Engine Company, Inc.|Ceramic tipped pivot rod and method for its manufacture|
    JPS63289306A|1987-05-22|1988-11-25|Ngk Spark Plug Co|Manufacture of sliding part|
    DE3826365A1|1988-08-03|1990-02-15|Bayerische Motoren Werke Ag|VALVE CONTROL FOR INTERNAL COMBUSTION ENGINES|
    US5060607A|1989-06-21|1991-10-29|Ngk Spark Plug Co., Ltd.|Tappet structure|
    US4966108A|1989-04-28|1990-10-30|Cummins Engine Company, Inc.|Sintered ceramic ball and socket joint assembly|
    JPH0518213A|1990-07-20|1993-01-26|Ngk Spark Plug Co Ltd|Tappet for engine|
    JP2817121B2|1991-03-18|1998-10-27|日本特殊陶業株式会社|Manufacturing method of tappet for engine|
    US5372099A|1991-07-19|1994-12-13|Sumitomo Electric Industries, Ltd.|Ceramic adjusting shim|
    US5279211A|1992-04-24|1994-01-18|Cummins Engine Company, Inc.|Mechanically retained wear-resistant ceramic pad|
    US5269268A|1993-03-26|1993-12-14|Fuji Oozx, Inc.|Tappet in an internal combustion engine and method of manufacturing the same|
    EP0618350B1|1993-03-26|1996-06-19|Fuji Oozx Inc.|Tappet in an internal combustion engine and method of manufacturing the same|
    EP0742348B1|1994-11-14|2004-07-21|Sumitomo Electric Industries, Limited|Ceramic sliding part|
    WO1997001696A1|1995-06-26|1997-01-16|Sumitomo Electric Industries, Ltd.|Ceramic sliding part|
    US5890413A|1997-01-08|1999-04-06|Generac Portable Products, Llc|Piston for water pump and related method|
    DE102005049158A1|2005-10-14|2006-12-07|Siemens Ag|Pump-nozzle-injection system for use in diesel engine, has transmission piece made of ceramic and cermet material, and including concave and convex actuation surfaces with surface roughness of preset value|
    JP2012072671A|2010-09-28|2012-04-12|Hitachi Automotive Systems Ltd|Valve lifter for internal combustion engine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3308550A|DE3308550C2|1983-03-10|1983-03-10|
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