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Informationen zum Autor Dr. Guangrui Zhu gained his PhD on engine valve train tribology at the University of Leeds, UK in 1988. He has worked in an industry-based R&D environment since then. He has published numerous journal and conference papers on journal bearings, trust bearings, mechanical seals, and valve trains. Professor Chris Taylor has researched in the area of lubrication for over 30 years, with engine tribology being a major theme in recent times. Klappentext An Engineering Research Series title. This excellent and long awaited book is based upon extensive research carried out by the Institute of Tribology at the University of Leeds in the UK and the Ford Motor Company Ltd. It is concerned with both the theoretical and experimental study of the tribological performance of an automobile valve train, having an offset taper cam and a domed follower, incorporated with an hydraulic lash adjuster, with particular reference to the ZETA engine valve train. A sophisticated theoretical model has been developed that predicts the tribological performance of the valve train, and also provides a useful tool for the consideration of the tribological design of valve trains. Additionally the model can estimate the instantaneous and average rotational frequency of the follower, and the performance of the hydraulic lash adjuster. In order to validate the theoretical model, the experimental measurements have been correlated with the theoretical predictions that simulate the test conditions of the valve train. The agreement between the measurements and the predictions show that the model is very reliable. This gives readers great confidence in using the model when dealing with novel and alternative designs of the valve train. COMPLETE CONTENTS: Part One - Theoretical Formulation. Kinematics and dynamics of the cam and follow er Hydraulic lash adjuster The maximum hertzian stresses Asperity interactions The oil film thickness Friction and power loss of the valve train The rotation of the follower The overall solution procedure and input/output data An example of the tribological analysis of a valve train. Part Two - Experimental Study. Test apparatus and the instrumentation Calibration of the instrumentation and commissioning tests Test procedure Data processing Experimental results and discussions Part Three - Correlation of theory and experiments. Experimental evidences Theoretical predictions Comparison of results and discussions Overall conclusions. Zusammenfassung Concerned with both the theoretical and experimental study of the tribological performance of an automobile valve train! this work is based upon the research carried out by the Institute of Tribology at the University of Leeds in the UK and the Ford Motor Company Ltd. It is a tool for the consideration of the tribological design of valve trains. Inhaltsverzeichnis Series Editor's Foreword xi Authors' Preface xiii Notation 1 Chapter 1 Introduction 5 Part I Theoretical Formulation Chapter 2 Kinematics and Dynamics of the Cam and Follower 11 2.1 Introduction 11 2.2 Kinematic analysis of a cam and domed flower pair 11 2.3 The load at the cam/follower interface 13 2.4 The solution procedure 15 2.5 References 15 Chapter 3 Hydraulic Lash Adjuster 17 3.1 Introduction 17 3.2 Check valve closed 17 3.2.1 The dynamics of the plunger 17 3.2.2 The governing equation of the displacement 19 3.2.3 Numerical analysis 20 3.3 Check valve open 21 3.3.1 The dynamics of the plunger 21 3.3.2 The governing equation of the displacement 23 3.3.3 Numerical analysis 24 3.4 The numerical solution procedure 24 Chapter 4 The Maximum Hertzian Stresses 25 4.1 Int...
