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    Coulomb Friction and Optimal Rocker Arm Ratio for High-Speed Cam Systems

    Source: Journal of Mechanical Design:;1986:;volume( 108 ):;issue: 003::page 340
    Author:
    A. P. Pisano
    ,
    Hong Tao Chen
    DOI: 10.1115/1.3258737
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The operating speed of a high-speed cam system can be maximized by the proper choice of both kinematic and dynamic parameters of a lumped model. Considering rocker arm ratio as an unconstrained kinematic parameter and Coulomb friction as an unconstrained dynamic parameter, it was found that the camshaft speed at which toss occurred was characterized by several local extrema, all of which were sensitive to the presence of Coulomb friction. For a particular cam system and two separate cam lift curves, design charts have been developed to aid in the choice of optimal rocker arm ratio for maximum operating speed in the presence of Coulomb friction.
    keyword(s): Friction , Coulombs , Design AND Camshafts ,
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      Coulomb Friction and Optimal Rocker Arm Ratio for High-Speed Cam Systems

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    http://yetl.yabesh.ir/yetl1/handle/yetl/101445
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    contributor authorA. P. Pisano
    contributor authorHong Tao Chen
    date accessioned2017-05-08T23:23:02Z
    date available2017-05-08T23:23:02Z
    date copyrightSeptember, 1986
    date issued1986
    identifier issn1050-0472
    identifier otherJMDEDB-28068#340_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/101445
    description abstractThe operating speed of a high-speed cam system can be maximized by the proper choice of both kinematic and dynamic parameters of a lumped model. Considering rocker arm ratio as an unconstrained kinematic parameter and Coulomb friction as an unconstrained dynamic parameter, it was found that the camshaft speed at which toss occurred was characterized by several local extrema, all of which were sensitive to the presence of Coulomb friction. For a particular cam system and two separate cam lift curves, design charts have been developed to aid in the choice of optimal rocker arm ratio for maximum operating speed in the presence of Coulomb friction.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCoulomb Friction and Optimal Rocker Arm Ratio for High-Speed Cam Systems
    typeJournal Paper
    journal volume108
    journal issue3
    journal titleJournal of Mechanical Design
    identifier doi10.1115/1.3258737
    journal fristpage340
    journal lastpage344
    identifier eissn1528-9001
    keywordsFriction
    keywordsCoulombs
    keywordsDesign AND Camshafts
    treeJournal of Mechanical Design:;1986:;volume( 108 ):;issue: 003
    contenttypeFulltext
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