Last edited by Kagajar
Wednesday, August 5, 2020 | History

3 edition of Tribological Analysis and Design of a Modern Automobile Cam and Follower (Engineering Research Series (REP)) found in the catalog.

Tribological Analysis and Design of a Modern Automobile Cam and Follower (Engineering Research Series (REP))

by Guangrui Zhu

  • 167 Want to read
  • 22 Currently reading

Published by Wiley .
Written in English

    Subjects:
  • Automotive technology,
  • Tribology (friction & lubrication),
  • Technology & Engineering,
  • Technology & Industrial Arts,
  • Science/Mathematics,
  • Automotive,
  • Technology / Machinery,
  • Machinery,
  • Internal combustion engines,
  • Lubrication,
  • Tribology

  • The Physical Object
    FormatHardcover
    Number of Pages154
    ID Numbers
    Open LibraryOL12053814M
    ISBN 101860582036
    ISBN 109781860582035

    continuous operation. This is controlled by the design of the cam and the movement of the valve train. The cam has intake and exhaust lobes for each cylinder. Each lobe is designed with a profile that, when the cam rotates, will actuate the opening and closing of the valves at the right time. Most diesel engines. fatigue wear becomes severe as the contact between cam and follower exceeds the plasticity limit of material. It finally leads to an increase in valve lash and loss of engine performance.

      Tribological tests were carried out in a pin-on-plate tribometer under boundary lubrication conditions. To understand the effect of additives, tribofilms formed on the wear tracks were analyzed using surface sensitive analytical techniques such as atomic force microscope, scanning electron microscopy, energy dispersive X-ray analysis, X-ray. This paper describes the development of a numerical approach based on friction and lubrication analysis to predict the flash temperature and its effects on friction at cam/follower interface. Simulation results showed that the rise in flash temperature resulted in decrease of friction and oil film thickness at cam/tappet contact particularly at Title: Energy and Environment .

    The solution is achieved by identifying the tribological processes and phenomena in the friction nodes of lightweight valves made of titanium alloys and ceramics, both cam and camless driven. The book provides a set of structured information on the current tribological problems in modern internal combustion engines-from an introduction to the. Projects are presented at the beginning of the term, teams are formed and for the next twelve weeks teams follow a structured design process that culminates in a proof-of-concept prototype. Projects identified to have a significant impact, a committed team and a viable market can be continued into the spring term for the next level implementation.


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Tribological Analysis and Design of a Modern Automobile Cam and Follower (Engineering Research Series (REP)) by Guangrui Zhu Download PDF EPUB FB2

Tribological Analysis and Design of a Modern Automobile Cam and Follower Volume 4 of Engineering Research Series (REP) Authors: Guangrui Zhu, Chris M Taylor: Edition: illustrated: Publisher: Wiley, Original from: the University of Michigan: Digitized: Dec 6, ISBN:Length: pages: Subjects.

Tribological analysis and design of a modern automobile cam and follower. London: Professional Engineering, (OCoLC) Online version: Zhu, G. (Guangrui). Tribological analysis and design of a modern automobile cam and follower. London: Professional Engineering, (OCoLC) Document Type: Book: All Authors / Contributors.

Tribological design challenges for the automotive cam and follower • Improved surface profile, surface roughness and mixed lubrication considerations. • Development of a linkage between lubrication mechanics and chemical mechanics, with a better understanding of Cited by:   Tribological Analysis and Design of Modern Automobile Cam and Follower, Professional Engineering Publishing Limited, London and Bury St, Edmunds, UK () Google Scholar NomenclatureCited by: 3.

Tribological Design and Analysis of a Modern automobile cam and follower January ARCHIVE Proceedings of the Institution of Mechanical Engineers Part J Author: Rob Dwyer-Joyce.

The Tribological Behavior of an Automotive Cam and Flat Lifter System S. Bair, S. Bair The loss per revolution ranged from J to J for the flat followers.

The roller follower loss was 18 percent of that of the flat follower for similar conditions. Mixed EHL Analysis of the Variable Torque Slipping Clutch With Skewed Rollers.

The solution is achieved by identifying the tribological processes and phenomena in the friction nodes of lightweight valves made of titanium alloys and ceramics, both cam and camless driven. The book provides a set of structured information on the current tribological problems in modern internal combustion engines—from an introduction to the.

Drivers for tribological design and innovation Valve train kinematics: cam-to-flat follower contact Valve train dynamics Valve lift and cam profile Sample application of design charts: four-stroke automotive engine pump in a modern cc gasoline engine can absorb 2 to 3 kW of power at full engine speed, while for a racing car this can rise to some 20 kW (Taylor, ).

Lubrication Regimes in the Engine As with any other system designed to operate with a liquid lubricant, the key operating tribological.

Knife edged (a) – These are not often used due to the rapid rate of wear of the knife edge. This design produces a considerable side thrust between the follower and the guide.

• Roller follower (b) – The roller follower has the advantage that the sliding motion between cam and follower is largely replaced by a rolling motion. Note that sliding is not entirely eliminated since the inertia. Tribological Processes in Valvetrain Systems with Lightweight Valves: New Research and Modelling provides readers with the latest methodologies to reduce friction and wear in valvetrain systems—a severe problem for designers and solution is achieved by identifying the tribological processes and phenomena in the friction nodes of lightweight valves made of titanium alloys.

A cam is a specially shaped part of a machine that is always in contact with a member called the follower. In this guide to cam manufacture and design, Rothbart (dean emeritus, College of Science and Engineering,Fairleigh Dickinson University) examines the advantages of cams over other motion devices, describes computer-aided design and manufacturing techniques, and provides Reviews: 1.

Modern design methods of Automotive Cam Design require the computation of a range of parameters. This book provides a logical sequence of steps for the derivation of the relevant equations from.

[PDF] Tribological Analysis and Design of a Modern Automobile Cam and Follower (Engineering. A number of methods of spring pack design are available to allow combined optimization with camshaft profile design.

VALDYN Kinematics produces comprehensive outputs to enable spring/cam design to be assessed, including cam contact Hertzian stress, oil film thickness, cam wear, spring cover, spring stress and spring natural frequency.

Using the model, a quasi-static analysis for a heavily loaded cam-roller follower contact is carried out. The results show that when the lubrication conditions in the roller-pin contact are satisfactory, i.e., low friction levels, then the nearly “pure rolling” condition at the cam-roller contact is maintained and lubrication performance is.

Written both as a reference for practising automotive design and development Engineers, and a text book for automotive engineering students, Introduction to Analytical Methods for Internal Combustion Engine Cam Mechanisms gives readers a thorough introduction into the design of automotive cam mechanismsThis text refers to the paperback s: 1.

Beginning at an introductory level and progressing to more advanced topics, this comprehensive handbook provides all the information needed to properly design, model, analyze, specify, and manufacture cam-follower systems. The reader will find complete coverage of: Proper Cam Design Techniques; Single- and Multi-Dwell Cams; Classical Cam FunctionsReviews: 4.

BEST HOPES FOR ALL. Keywords: Follower & Cam; Point Contact; Vibration Analysis; Finite Element Approach [FEA] 1. Introduction. Cam and follower mechanism is preferred over a wide variety of internal combustion engines because due to the cam and follower it is possible to obtain an unlimited variety of motions.

Again the cam and follower has a. However the sliding contact between the cam and tappet results in higher friction loss than the roller finger follower valve train used on many modern passenger car engines.

In addition, the high maximum engine speed demands a large valve spring force to maintain contact between cam and tappet.A cam‐driven linkage is one way of generating a variable output motion from a constant input shaft velocity.

Figure 1 shows an example of a cam‐driven crank‐slider linkage. Cam‐ follower systems are widely used in modern machinery especially in automotive applications.Modern design methods of Automotive Cam Design require the computation of a range of parameters.

This book provides a logical sequence of steps for the derivation of the relevant equations from first principles, for the more widely used cam mechanisms.