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RISCoulomb Friction in High-Speed Cam Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Coulomb friction in the rocker arm pivot of a high-speed cam system was quantified and its effect on high-speed response was examined. Experimental dynamic data from an automotive valve train ...
An Experimental and Analytical Investigation of the Dynamic Response of a High-Speed Cam-Follower System. Part 1: Experimental Investigation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is concerned with filling two gaps in the cam design field: (a) the absence of adequate measurements of the dynamic response of cam-follower systems, and (b) the need for the ...
On The Synthesis of Cams With Irregular Followers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper extends the envelope theory for plate cam geometry design to irregular-surface follower systems. Analytical description of cam profiles for general com-follower systems is derived and ...
An Experimental and Analytical Investigation of the Dynamic Response of a High-Speed Cam-Follower System. Part 2: A Combined, Lumped/Distributed Parameter Dynamic Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Part 2 describes the development of a dynamic model of a high-speed cam-follower system in which the return spring is modeled as a distributed-parameter element. The dynamic response requires ...
The Development and Application of Kinematic Icon and Inactive-Joint Concepts in Automated Mechanism Sketching
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An important step within the automated type synthesis process is the generation of graphical displays of proposed mechanisms which permit designers to visualize the candidates. In this paper, ...
Modeling of a Finger-Follower Cam System With Verification in Contact Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A lumped/distributed-parameter dynamic model is developed to investigate the dynamic responses of a finger-follower cam system by considering a hydraulic lash adjuster with an oscillating pivot, ...
Three-Dimensional Dynamic Simulation of Helical Compression Springs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic equations for general helical springs are solved and classified according to the number of energy terms used to formulate them. Solutions of several sets of dynamic equations, each ...
On the Synthesis of Straight Line, Constant Velocity Scanning Mechanisms
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a kinematic synthesis of constant-velocity, straight-line coupler-point motion of two planar mechanisms. After the derivation of synthesis equations, the numerical results of a ...
Coulomb Friction and Optimal Rocker Arm Ratio for High-Speed Cam Systems
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 ...
Modeling, Simulation, and Modal Analysis of a Hydraulic Valve Lifter With Oil Compressibility Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A two-degree-of-freedom (2-DOF), analytical model of a hydraulic valve lifter is derived. Special features of the model include the effects of bulk oil compressibility, multimode behavior due to ...