intake port flow study on various cylinder head using flowbench mohd taufik bin abd kadir universiti

41 Pages·2008·9.55 MB·English

INTAKE PORT FLOW STUDY ON VARIOUS CYLINDER HEAD USING
FLOWBENCH

MOHD TAUFIK BIN ABD KADIR

UNIVERSITI MALAYSIA PAHANG
INTAKE PORT FLOW STUDY ON VARIOUS CYLINDER HEAD USING
FLOWBENCH

MOHD TAUFIK BIN ABD KADIR

A report is submitted in partial fulfillment
of the requirements for the award of the degree of
Bachelor of Mechanical Engineering with Automotive Engineering

Faculty of Mechanical Engineering
Universiti Malaysia Pahang

NOVEMBER 2008
SUPERVISOR DECLARATION

We hereby declare that we have checked this project and in our opinion this project is
satisfactory in terms of scope and quality for the award of the degree of Bachelor of
Mechanical Engineering with Automotive Engineering.

Signature :

Name of Supervisor: Mr. Fairusham
Position:
Date:

Signature:

Name of Panel:
Position:
Date:
STUDENT DECLARATION

I declare that this thesis entitled “Intake Port Flow Study on Various Cylinder Head
Using Flowbench” is the result of my own research except as cited in the reference.
The thesis has not been accepted for any degree and is not concurrently submitted in
candidature of any other degree.

Signature : ..............................................

Name : Mohd Taufik Bin Abd Kadir

Date : …………………………….
Dedicated to my beloved Parents and Family,
Especially to my late Mother,
Thank you for all the supports and encouragement during
This thesis is being made..
ACKNOWLEDGEMENTS

In the name of ALLAH SWT, the most Gracious, who has given me the
strength and ability to complete this study. All perfect praises belong to ALLAH
SWT, lord of the universe. May His blessing upon the prophet Muhammad SAW and
member of his family and companions.

I feel grateful to Allah S.W.T because this project has successfully
completed. In completion this final year project, I was in contact with many people
that contributed toward my understanding and problem solving. In particular, I wish
to express my sincere appreciation to my project supervisor, Mr. Ismail Bin Ali for
his guidance, advice and encouragement. I am deeply thankful to everyone who
assisted me on this project especially to all staff FKM laboratory for their assistance
and support.

Besides that, I also would like to dedicate my deepest appropriation to all my
fellow friends especially to automotive student batch 04/08 for their support and
encouragements during this project are performed.

Not forgetting my family members in giving me lots of supports in the
aspects of moral, social and financial during my degree. This project definitely not
exists without full encouragement from them.
ABSTRACT

Modification on intake port flow by enlarging the intake port area can
increase engine performance. Higher air flow rate entered the intake port resulting
higher air-fuel rate burn thus increased the performance of the engine. This report are
consist of experiment of intake port flow between two cylinder head, Toyota 4AGE
1.6L and Proton 4G92 1.6L.Modification works will be porting, polishing, removing
valve guide and additional mounted velocity stack. Effects of modification through
both cylinder head are experimentally tested by opening valve lift with significant
value by calculations using Superflow® SF-1020 Flowbench machine. The
experiment will consist of intake valve flow rate, the effect of velocity stack and
swirl motion in bore. It is proved by experiment result that porting, polishing and
removal valve guide in the intake port area works significantly increased the flow
into the engine and consequently changes the swirl speed to a higher values for both
cylinder head and tremendous increased when the velocity stack is added along with
the modification works.
ABSTRAK

Modifikasi pada bahagian kemasukan aliran jisim udara dengan pembesaran
kawasan kemasukan aliran udara boleh meningkatkan prestasi enjin. Peningkatan
kenaikan kadar kemasukan jisim udara meningkatkan kadar pembakaran jisim udara
dan bahan bakar yang mengakibatkan peningkatan mendadak prestasi enjin. Repot
experimen ini mengandungi kajian tentang kadar jisim udara masuk antara dua jenis
kepala silinder iaitu Proton 4G92 1.6L dan Toyota 4AGE 1.6L.Kerja-kerja
modifikasi adalah seperti ”porting”, ”polishing”, penghapusan panduan injap udara
masuk dan penambahan cerobong kelajuan.Kesan daripada modifikasi kedua-dua
kepala silinder akan diuji keberkesanannya melalui experimen dengan pembukaan
injap udara masuk melalui pengiraan kadar pembukaan injap udara masuk dengan
menggunakan mesin Superflow® SF-1020 Flowbench.Experimen pada ruang aliran
jisim udara masuk ini merangkumi kadar jisim udara masuk, kesan penggunaan
cerobong kelajuan dan kesan pergerakan pusaran pada bor.Telah terbukti dalam
experimen bahawa kesan daripada kerja-kerja ”porting”, ”polishing” dan
penghapusan panduan injap udara masuk di kawasan kemasukan aliran udara dapat
meningkatkan kadar jisim udara yang masuk ke dalam kepala silinder
mengakibatkan perubahan kadar kelajuan pusaran di dalam bor kepada kedua-dua
kepala silinder and peningkatan yang menakjubkan jika modifikasi disertakan juga
dengan cerobong kelajuan udara.
TABLE OF CONTENTS

CHAPTER TITLE PAGE

THESIS TITLE i
DECLARATION ii
DEDICATION iii
ACKNOWLEDGEMENT v
ABSTRACT vi
TABLE OF CONTENT viii
LIST OF TABLES xi
LIST OF FIGURES xii
LIST OF SYMBOLS xiv
LIST OF APPENDICES xv

CHAPTER I INTRODUCTION 1

1.0 Project Background 1
1.1 Problem Statement 2
1.2 Objectives of the Project 2
1.3 Scopes of the Project 3

CHAPTER II LITERATURE STUDY 5

2.1 Introduction 5
2.2 Engine Specification 6
2.2.1 Intake Port Design 6
2.2.2 Poppet Valve Design 7
2.3 Intake Port Flow 7
2.4 Flow Losses in an Intake Port 11
2.5 Technique of Modifications 12
2.6 Swirl 13
2.6.1 Swirl Meter 14
2.7 Coefficient of Discharge 15
2.8 Flowbench system 17

CHAPTER III METHODOLOGY 19

3.1 Porting 19
3.1.1 Porting Tools 20
3.2 Polishing 23
3.2.1 Polishing Tools 23
3.2.2 Polishing Work 24
3.3 Velocity Stack 25
3.4 L/D Ratio 27
3.4.1 L/D Ratio for Both Cylinder Head 28
3.5 Flowbench Analysis 28
3.5.1 Analysis Parameter 30
3.5.2 Valve Lift Actuations 31
3.5.3 Steps for Measurement 32
3.6 Analysis for Both Engines 34
3.7 Airflow Measurement 35
3.8 Formula Used 35

CHAPTER IV RESULT AND DISCUSSIONS

4.1 Proton Intake Port Result 38
4.1.1 Before Cleaning Process 38
4.1.2 After Cleaning Process 39
4.1.3 Modification without Velocity Stack 40
4.1.4 Modification with Velocity Stack 41
4.1.5 Swirl Result 42
4.1.6 Valve Flow Percentage Increment 43