Nowadays, many demands from consumers to have a car with powerful

engine and low of gasoline so vehicle manufactures think how to make engine like

that. Vehicle manufactures develop technology which can increase of performance

and the engine can have a great power and torque. Intellegence Variable Timing and

Lift Electronic Control (i-VTEC) can be used to problem solve above because it can

control timing valve. I-VTEC can increase engine performance that can make the

gasoline engine will increase power and torque.

Research target that is to know influence variable valve timing to engine

performance at four stroke engine 1497cc. Research uses four stroke engine with

two types of engine with active i-VTEC and engine with non-active i-VTEC. Two

types of four stroke engine will testing above engine dynamometer. Calculation is

conducted after got data of testing result.

Base testing and analysis can be concluded that engine use active i-VTEC

have higher performance than engine with non-active i-VTEC. From dynamometer

test was get maximum torque from engine use i-VTEC is 148 Nm at 5000 rpm and

maximum torque from engine with non-active i-VTEC is 142 Nm at 5000 rpm.

Maximum power from engine use active i-VTEC is 120.6 BHP at 6500 rpm and

maximum power from engine with non-active i-VTEC is 115.2 BHP at 6500 rpm. IVTEC

organizes timing of valve which can make overlapping on the machine.

Overlapping make number of air-fuel mixture in combustion chamber will increase

which can make performance will increase

, Ir. Subroto, M.T.

, Nur Aklis, S.T., M.Eng

Hidayat, Faizal

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i  FINAL PROJECT COMPARISON ANALYSIS PERFORMANCE OF  GASOLINE ENGINE USING ACTIVE AND  NON-ACTIVE i-VTEC SYSTEM           ABSTRACT  Submitted as a Partial Fulfillment of the Requirements for Getting  the Bachelor Degree of Engineering in Automotive Department    by FAIZAL HIDAYAT D200 080 203     MECHANICAL ENGINEERING DEPARTMENT INTERNATIONAL PROGRAM IN AUTOMOTIVE/MOTORCYCLE ENGINEERING MUHAMMADIYAH UNIVERSITY OF SURAKARTA July 2013 ii  DECLARATION OF RESEARCH AUTHENTICITY I assert verily that the research entitles: COMPARISON ANALYSIS PERFORMANCE OF GASOLINE ENGINE USING ACTIVE AND NON-ACTIVE i-VTEC SYSTEM That made to fulfill some of requirements to get Bachelor Degree of Engineering in Automotive Department of Muhammadiyah University of Surakarta, as far as I know is not a plagiarism of a research that has been published, except the information source that to solve the problems.                Surakarta, July 2013 Researcher,     Faizal Hidayat iii   iv     v  DEDICATION This Research paper is dedicated to: Allah SWT, Thanks for the best everything that You have given for me and thanks for Your love that always make me to never give up to do the best. I believe that You will always give me the best for everything. My beloved Mom and Dad, Thanks for your prayer, love, support and affection. You always give me happiness but often I made you disappointed. I am sorry and I promise to give you the best in the future. My Siblings (Taufiq Hidayat, Titis Dwi Wahyuni, Arum Sukmawati),  Thanks for your supports. It is make me strong to get something more and more. My closed friend (Eka Adistiana), Thanks for your love, support, attention, spirit, care, and advice. As long as I know you, you make me to be better and adult. My all family, Thanks for your prayer, love, support and everything. All my friends (Automotive Engineering ‘08, etc) Thanks for your supports and love me. vi  MOTTO   [5] For indeed, with hardship [will] be ease, [6] Indeed, with hardship [will be] ease (Al-Insyirah: 5-6)  [7] Then shall anyone who has done an atom's weight of good, see it! [8] And anyone who has done an atom's weight of evil, shall see it.  (Al-Zalzalah: 7-8)  [7]“And remember! Your Lord caused to be declared (publicly): “if ye are grateful, I will add more (favors) unto you; but if ye show ingratitude, truly My punishment is terrible indeed.” (Q.S. Ibrahim: 7) Allah will not change the condition of a people until they change what is in themselves. (Q.S. Ar-Ra’d : 11) The Prophet (sallallahu alaihi wasallam) said "A single day under a just ruler (Khaleefah) is better than 60 years of ibadah" (HR. Bayhaqi/Tabarani) People are always learning will be very respected and strength not based on knowledge wills collapse. (AL-Ghozali) Anyone who pursue the path to knowledge therein, Allah  paves the way for him to heaven (Narrated by Muslim) We only have one future, and it will be made of our dreams, if we have the courage to challenge convention (Soichiro Honda) Enjoying your work is essential. If your work becomes an expression of your own ideas, you will surely enjoy it (Soichiro Honda)  vii  ACKNOWLEDGMENT  Assalamu’alaikum Warohmatullahi Wabarokatuh  Alhamdulillahirobbil’alamiin. Praise and gratitude be to Allah SWT, The Lord of universe, because of His blessing and guidance The Research Paper can be done.  The Final Project entitles “Comparison Analysis Performance Of Gasoline Engine Using Active And Non-Active i-VTEC System” can be done because of chelping and supporting from other people. Therefore, writer sincerely would like to say thanks and appreciation to: 1. Ir. Agus Riyanto, MT., as the Dean of Engineering Faculty of Muhammadiyah University of Surakarta. 2. Ir. Sartono Putro, MT., as the Head of Mechanical Engineering of Muhammadiyah University of Surakarta. 3. Wijianto, ST., M.Eng.Sc., as Secretary of International Program of Muhammadiyah University of Surakarta. 4. Ir. Subroto, MT., as the first supervisor who has given the researcher inspiration, spirit, advices, suggestions, and corrections to the paper completion. 5. Nur Aklis, ST.M.Eng., as the second supervisor who has given the researcher guidance, suggestions, and correction wisely. 6. All lectures of Automotive Engineering Department for the guidance during the study in the university. 7. His beloved Mother and Father who always give enormous pray, biggest support, care, affection and great attention. 8. His Brothers and sisters for suggestions and advices. viii  9. His closed friend “Eka Adistiana” thanks for your support and advices. 10. His best friends “Automotive Engineering 2008” thanks for your laugh, funnies experiences and supports, I will never forget you. 11. Head of PT. RS Tuning Lestari Motor, thank you so much for the place and equipments that used to do the experiment. 12. The Employers of PT. RS Tuning Lestari Motor thank a lot for your helpfulness 13. All students of International program of Automotive Department, thanks a lot for the best suggestion and advice, hope we can the best engineer. 14. His friends and staffs in PESMA K.H. Mas Mansur. Thanks for accompany him during his study. 15. Those who cannot be mentioned one by one, writer wants to say his thank and appreciation to all of them.        The writer realizes that this research paper is far from being perfect, so the writer sincerely welcomes any constructive comment, criticism, and suggestion from anyone. Wassalamu’alaikum Warohmatullahi Wabarokatuh          Surakarta, July 2013 The Writer  Faizal Hidayat  ix  TABLE OF CONTENT   Page TITLE......................................................................................................    i DECLARATION OF RESEARCH AUTHENTICITY ................................   ii APPROVAL  ...........................................................................................   iii VALIDATION  .........................................................................................   iv DEDICATION  ........................................................................................   v MOTTO ..................................................................................................   vi ACKNOWLEDGMENT ...........................................................................   vii TABLE OF CONTENT ............................................................................   ix LIST OF FIGURES .................................................................................   xii LIST OF TABLES ...................................................................................   xii ABSTRACT  ...........................................................................................   xiv CHAPTER I:  INTRODUCTION   1.1. Background  ........................................................................  1 1.2. Problem Statement  ............................................................  2 1.3. Objectives  ..........................................................................  2 1.4. Benefit Of Study  .................................................................  3 1.5. Problem Limitations  ...........................................................  3 CHAPTER II: REVIEW OF LITERATURE  2.1. Literature Study  .................................................................. 4 2.2. Fundamental of Theory  ...................................................... 6 2.2.1 Valve Mechanism  .................................................... 6 x  2.2.2 Combustion  ............................................................. 8 2.2.3 Ideal Otto Cycle  ....................................................... 10 2.2.4 Engine Performance Parameter  .............................. 14 2.2.5 Parameters Of Engine Performance  ....................... 15 2.2.6 Engine Performance Characteristic  ......................... 18 2.3 DOHC And SOHC i-VTEC  .................................................. 21 2.3.1 DOHC i-VTEC .......................................................... 21 2.3.2 SOHC i-VTEC .......................................................... 22 2.4 Camshaft  ............................................................................ 22 2.4.1 Valve Lift .................................................................. 25 2.4.2 Lobe Separation Angle  ............................................ 25 2.5 Valve Timing ........................................................................ 26 2.6 Debit  ................................................................................... 28 2.7 Overlapping  ........................................................................ 29 2.8 Volumetric Efficiency  .......................................................... 30 2.9 I-VTEC Engine Mechanism  ................................................ 33 2.9.1 Construction  ............................................................ 34 2.9.2 Operation Of i-VTEC  ............................................... 41 2.9.2.1   VTEC System ............................................. 41 2.9.2.2   i-VTEC System ........................................... 42 2.10 Dynamometer  ..................................................................... 44 2.10.1 Principle Of Operation  ............................................. 44   xi  CHAPTER III: ENGINE TEST METHODOLOGY  3.1 Flow Chart of Engine Test .................................................. 46 3.2 Material  .............................................................................. 49 3.3 Place And Time of Research  ............................................. 50 3.4 Tools  .................................................................................. 50 3.5 Experiment Procedures ...................................................... 51 CHAPTER IV: ANALYSIS 4.1 Analysis of Torque  ............................................................. 52 4.2 Analysis of Power  .............................................................. 54 CHAPTER V: CONCLUSION AND SUGGESTION 5.1 Conclusion  ......................................................................... 57 5.2 Suggestion  ......................................................................... 58 BIBLIOGRAPHY  .................................................................................. 59 APPENDIX            xii  LIST OF FIGURES Page Figure 2.1 Basic geometry of the reciprocating internal combustion  engine  ................................................................................. 6 Figure 2.2 Exaust Strokes  ................................................................... 8 Figure 2.3 Components of Basic Combustion   .................................... 9 Figure 2.4 Ideal air-standard otto cycle, 6-1-2-3-4-5-6, which approximates  the four-stroke cycle of an SI engine P-V diagram  ................. 11 Figure 2.5 Schematic of principle of operation of dynamometer   ......... 16 Figure 2.6 Typical SI Engine Performance Curves   ............................. 19 Figure 2.7 DOHC mechanism   ............................................................ 21 Figure 2.8 SOHC mechanism   ............................................................. 22 Figure 2.9 Operating system of camshaft   ........................................... 23 Figure 2.10 Valve lift of intake and exhaust .......................................... 24 Figure 2.11 Lobe Separation Angle (LSA)  ........................................... 25 Figure 2.12 Valve Timing Diagram (Retard and Advance)  .................. 26 Figure 2.13 Lift of valve on the intake stroke ........................................ 28 Figure 2.14 Mechanism of Overlapping ................................................ 29 Figure 2.15 i-VTEC System .................................................................. 33 Figure 2.16 Trochoid Type ................................................................... 34 Figure 2.17 Strainer Oil ........................................................................ 35 Figure 2.18 Oil Filter ............................................................................. 35 Figure 2.19 Cranshaft Position Sensor (CKP) ...................................... 36 Figure 2.20 Electronic Control Unit (ECU) Mechanism......................... 37 Figure 2.21 The Camshaft .................................................................... 37 Figure 2.22 The Rocker Arm ................................................................ 38 xiii  Figure 2.23 Solenoid Valve .................................................................. 39 Figure 2.24 Spool Valve ....................................................................... 40 Figure 2.25 Show the mechanism at low speed ................................... 41 Figure 2.26 Show the mechanism at high speed .................................. 42 Figure 2.27 Mechanism of Advance Condition ..................................... 43 Figure 2.26 Mechanism of Retard Condition ........................................ 44 Figure 3.1 Engine Test Flow Chart   ..................................................... 46 Figure 3.2 Scheme of Dynamometer   .................................................. 41 Figure 3.3 HTS Installation on motorcycle   .......................................... 42 Figure 4.1 Graphic of Torque Toward RPM  ......................................... 53 Figure 4.2 Graphic of Power Toward RPM  .......................................... 55   LIST OF TABLES Page Table 3.1 Specification of Honda Jazz Engine ..................................... 49 Table 4.1 Torque And RPM data from dyno test  ................................. 52 Table 4.2 Power And RPM data from dyno test  .................................. 54        xiv  COMPARISON ANALYSIS PERFORMANCE OF GASOLINE ENGINE USING ACTIVE AND NON-ACTIVE i-VTEC SYSTEM   Faizal Hidayat Mechanical Engineering Department  International Program In Automotive/Motorcycle Engineering Muhammadiyah University of Surakarta Jl. A. Yani Tromol Pos I Pabelan Kartasura, Surakarta 57102 E-mail: faizal.hidayat10@yahoo.com     ABSTRACT   Nowadays, many demands from consumers to have a car with powerful engine and low of gasoline so vehicle manufactures think how to make engine like that. Vehicle manufactures develop technology which can increase of performance and the engine can have a great power and torque. Intellegence Variable Timing and Lift Electronic Control (i-VTEC) can be used to problem solve above because it can control timing valve. I-VTEC can increase engine performance that can make the gasoline engine will increase power and torque. Research target that is to know influence variable valve timing to engine performance at four stroke engine 1497cc. Research uses four stroke engine with two types of engine with active i-VTEC and engine with non-active i-VTEC. Two types of four stroke  engine will testing above engine dynamometer. Calculation is conducted after got data of testing result.  Base testing and analysis can be concluded that engine use active i-VTEC have higher performance than engine with non-active i-VTEC. From dynamometer test was get maximum torque from engine use i-VTEC is 148 Nm at 5000 rpm and maximum torque from engine with non-active i-VTEC is 142 Nm at 5000 rpm. Maximum power from engine use active i-VTEC is 120.6 BHP at 6500 rpm and maximum power from engine with non-active i-VTEC is 115.2 BHP at 6500 rpm. I-VTEC organizes timing of valve which can make overlapping on the machine. Overlapping make number of air-fuel mixture in combustion chamber will increase which can make performance will increases.        Keywords:  gasoline engine, i-VTEC, performance, torque, power   

Comparison Analysis Performance Of Gasoline Engine Using Active And Non-Active I-Vtec System

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Comparison Analysis Performance Of Gasoline Engine Using Active And Non-Active I-Vtec System

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