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Tribological Analysis and Design of a Modern Automobile Cam and Follower

Hardcover

$239.25

Tribological Analysis and Design of a Modern Automobile Cam and Follower

Guangrui Zhu, Chris M Taylor

ISBN: 978-1-860-58203-5 August 2001 168 Pages

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Description

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 follower
  • 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.
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

Chapter 3 Hydraulic Lash Adjuster 17

Chapter 4 The Maximum Hertzian Stresses 25

Chapter 5 Asperity Interactions 29

Chapter 6 The Oil Film Thickness 33

Chapter 7 Friction and Power Loss of the Valve Train 37

Chapter 8 The Rotation of the Follower 45

Chapter 9 The Overall Solution Procedure and Input and Output Data 51

Chapter 10 An Example of the Tribological Analysis of a Valve Train 57

Part II Experimental Study

Chapter 11 Introduction to Experimental Study 87

Chapter 12 Test Apparatus and the Instrumentation 91

Chapter 13 Calibration of the Instrumentation and Commissioning Tests 97

Chapter 14 The Test Procedure 103

Chapter 15 The Data Processing 107

Chapter 16 Experimental Results and Discussions 111

Part III Correlation of Theory and Experiments

Chapter 17 Introduction to Correlation of Theory and Experiments 127

Chapter 18 The Experimental Evidence 129

Chapter 19 The Theoretical Predictions 131

Chapter 20 The Comparison of Results and Discussions 135

Chapter 21 Overall Conclusions 151

Index 153