MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION GRADUATION THESIS AUTOMOTIVE ENGINEERING TECHNOLOGY RESEARCHING ON TOYOTA VIOS 2022 2NR-FE ENGINE CONTROL SYSTEM INSTRUCTOR: CHAU QUANG HAI, MSC. STUDENTS: NGUYEN DUC DAT NGUYEN VIET HUNG SKL012555 Ho Chi Minh City, January 2024 HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND DUCATIONFACULTY FOR HIGH QUALITY TRAINING GRADUATION PROJECT RESEARCHING ON TOYOTA VIOS 2022 2NR-FE ENGINE CONTROL SYSTEM Major: AUTOMOTIVE ENGINEERING Advisor: CHAU QUANG HAI, MSc. Students name: NGUYEN DUC DAT 19145128 NGUYEN VIET HUNG 19145005 Ho Chi Minh City, January 2024 2 THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, January 08, 2024 GRADUATION PROJECT ASSIGNMENT 3 HO CHI MINH CITY UNIVERSITY OF THE SOCIALIST REPUBLIC OF TECHNICAL EDUCATION VIETNAM FACULTY OF INTERNATIONAL Independence - Freedom– Happiness EDUCATION Ho Chi Minh City, 2024 GRADUATION PROJECT TASKS PROJECT TITLE: RESEARCHING ON TOYOTA VIOS 2022 2NR-FE ENGINE CONTROL SYSTEM 4 THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness Ho Chi Minh City, January 08, 2024 ADVISOR’S EVALUATION SHEET 5 THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness Ho Chi Minh City, January 08, 2024 CRITICAL TEACHER’S EVALUATION SHEET 6 THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, January 20, 2024 CONFIRMATION OF COMPLETION OF GRADUATION THESIS Ho Chi Minh City, January 20, 2024 7 ACKNOWLEDGEMENT Our team would like to thank Ho Chi Minh City University of Technology and Education for giving us the opportunity to do the graduation thesis majoring automotive engineering and technology with topic “Researching on ignition, fuel injection system and sensor of Toyota Vios 2021 2NR-FE engine”. This thesis could not have been completed without the generous help and assistance from our advisor, teachers, and peers.
First of all, we would like to express our sincere gratitude to our advisor, Mr. Chau Quang Hai for their invaluable guidance and support throughout the research process. We also wish to thank the Engine Workshop, HCMUTE for facility supporting, as well as the Workshop for providing us the best conditions to accomplish our graduation project. Secondly, we would like to express our sincere thanks to the leadership of Faculty for High Quality Training and the teachers of automotive engineering and technology major for creating favorable conditions for the team to complete this thesis.
Finally, we feel appreciated for being supported by our peers, and family who have not only helped us immensely in completing this thesis, but also for our unwavering moral support. In the process of making the graduation thesis, due to limited experience and qualifications as well as limited implementation time, errors are inevitable. Our team is looking forward to receiving your comments to improve the thesis. Best regards, Ho Chi Minh City, 2024 THE GRADUATION THESIS’S AUTHOR TEAM 8 ABSTRACT Vietnam is a developing country with a huge potentiality to improvement of transportation.
In the present situation, automobile and the knowledge about automotive industry play a crucial role in developing economic activity and the wealthy of one country. This project presents a comprehensive overview of Toyota Vios 2022 engine control system. It explores various components and data sources used to collect information about the automobile and its surrounding working environment. Additionally, the project discusses different kind of systems and components belong to each mentioned system, as well as system inspection; including structure, working principle, connection between systems and failure detection.
Furthermore, the repairing method of each component in the employed engine model is examined, focusing on the most efficient solution to solve the problem and prevent it from occurring again. The paper concludes with an explanation on the challenges and future directions in vehicle engine analysis and repairing vehicle, highlighting the potential for advancements in sensor technology, engine control to further improve the power of automobile. 9 PREFACE After studying two modules of the propulsion industry: principles of internal combustion engines, structure and calculation of internal combustion engines and a number of other workshop practice subjects (engine 1, engine 2), students were assigned the task of doing a graduation project on researching and exploiting the ignition system of the Toyota Vios 2022 engine. This is an important task in the training program of the powertrain industry, in order to create favorable conditions.
for students to synthesize and apply the knowledge they have learned to the process of calculating and designing internal combustion engines and creating a foundation for innovation in the country's auto industry in the future. In this project, the group was assigned the task of researching and exploiting the engine control system of the 2NR - FE engine on the Toyota Vios 2022. During the project implementation, we tried to learn and research. external documents along with applying the knowledge learned in class, working seriously with the desire to complete the project in the best way.
The graduation project is divided into five chapters: • Chapter 1: Overview • Chapter 2: Overview of Toyota • Chapter 3: Sensors of Toyora Vios 2022 • Chapter 4: Fuel Injection and Ignition System of Toyota Vios 2022 • Chapter 5: Conclusion and future work 10 CONTENTS PREFACE. Reasons for choosing the topic.22 CHAPTER 2: OVERVIEW OF TOYOTA .1 Introduce of Toyota. Mission and Vision. Toyota car lineup .2 Introduce of Vios .2 Mission and Vision .4 Shape and Size.
Electronic ignition system. Electronic fuel injection system. Sensor on system. 42 CHAPTER 3: SENSORS OF TOYOTA VIOS 2022.
Mass Airflow Meter. Engine Coolant Temperature Sensor. Acceleration Pedal Position Sensor. Throttle Position Sensor.
Air Fuel Ratio Sensor. Crankshaft Position Sensor. Camshaft Position Sensor. 92 CHAPTER 4: FUEL INJECTION AND IGNITION SYSTEM OF TOYOTA VIOS 2022 .131 13 LIST OF FIGURES Figure 2.1: World Car Maker in 2008 .2: Toyota Vios First Generation .3: Toyota Vios Second Generation .4: Toyota Vios Third Generation .5: Toyota Vios Fourth Generation.6: Toyota Vios Market Share in June 2023 in Vietnam .7: 2NR-FE Engine .8: Transitorized ignition system .9: Structual of Direct Ignition System .10: ESA Ignition System Diagram .11: Throttle Body Injecton .12: Multi-port Fuel Injection .13: Gasoline Direct Injection System .1: Structure of MAF sensor .2: Mass Air Flow Meter Position .3: Inside structure of temperature sensor .4: Inside structure of temperature sensor .5: Wiring diagram of mass air flow meter .6: Front view of wire harness connector (to Mass Air Flow Meter) .7: Wiring diagrams of hot wire inside MAF .8: Structure of ECT sensor .9: Position of Engine Coolant Temperature Sensor .10: Wiring Diagram of Engine Coolant Temperature Sensor .11: Front-view of ECT sensor connector .12: Acceleration Pedal Sensor Position.13: When Acceleration Pedal is depressed and released .14: Front-view of APPS connector .15: Throttle Body Components .16: Wiring Diagram of TPS .17: Sensor Output Voltage with Throttle Valve Opening Angle .18: Output Characteristics of sensor .19: Front view of wire harness connector (to Throttle Body with Motor Assembly) .20: Knock occurs inside Cylinder .21: Knock Sensor Flat-type Structure .22: Knock Sensor position .23: Flat type Knock Sensor Elements .24: Wiring diagram of Knock sensor .25: Pins out of Knock sensor .26: Front view of wire harness connector .27: Heated Oxygen Sensor Position .28: Oxygen Sensor Structure .29: Toyota Vios 2022 Heated Oxygen Sensor .30: Structure and Working of Heated Oxygen Sensor .31: Heated Oxygen Sensor Wiring Diagram .32: Front view of wire harness connector (to Heated Oxygen Sensor).33: Component without harness connected (Heated Oxygen Sensor).35: Crankshaft position sensor position .36: Toyota Vios 2022 Crankshaft position sensor .37: Working of Crankshaft position sensor .38: Sensor Output Waveforms .39: Wiring Diagram of Crankshaft sensor .40: Front view of wire harness connector (to Crankshaft Position Sensor) .42: Toyota Vios 2022 Camshaft position sensor .43: Camshaft Position Sensor Location .44: Working Principle of MRE type sensor .45: Inspection using an oscilloscope.46: Wiring Diagram of Camshaft position sensor .47: Front view of wire harness connector (to Camshaft Position Sensor (for Intake Camshaft) .48: Camshaft timing mark .49: ECM Pins out .3: Fuel Pressure Regulator .4: Fuel Rail and Fuel Injectors .6: Fuel system parts position .7: Wiring diagram of fuel injection system .8: Wiring diagram of fuel system .9: Front view of wire harness connector (to Fuel Injector Assembly) .11: Component without harness connected (Fuel Injector Assembly) .15: Fuel Injector Testing .16: Check fuel pressure .17: Wiring diagram of ignition system.18: Wiring Diagram of Ignition System .19: Front view of wire harness connector (to No.23: F7 ignition or starter switch assembly connector .24: Four fuel injector assembly connectors position .25: Ground the Spark plugs to Spark test .26: Visual check the Spark plugs .127 17 LIST OF TABLES Table 2.1: Shape and Size of Vios 2022 .1 System failure diagnosed codes and inspection area .2: Compared value for system malfunction .4: MAF Sensor Test Value .7: Engine coolant temperature sensor inspection with diagnosis device .10: Table of Components on Throttle Body .11: Diagnosis code and inspection area of throttle position sensor .12: Check Idle speed .14 Standard Resistance of Connectors Continuity .15 Throttle Position Sensor Standard Resistance: .16: Standard Resistance of Knock sensor .17: Standard Voltage of Knock sensor .18: Standard Resistance of Knock sensor harness.19: Diagnosis code and inspection area of knock sensor .21: Diagnosis code and inspection area of heated oxygen sensor .22: Standard Voltage of Power source of heated oxygen sensor .23: Standard Resistance of Heated oxygen sensor .24: Standard resistance of harness and connector from Heated oxygen sensor - ECM .25: Crankshaft position sensor inspection with diagnosis device .26: Standard voltage of power source of crankshaft position sensor .27: Standard voltage of power source of crankshaft position sensor .28: DTC relate to Camshaft position sensor.29: Standard resistance of camshaft position sensor.30: Standard Voltage of power source of Camshaft position sensor (for intake camshaft) .31 Standard Resistance of harness and connector of Camshaft position sensor and ECM connector .1: Standard Voltage of power source of fuel injector assembly .2: Standard resistance of harness and connector from ECM to fuel injector assembly .3 Standard resistance of harness and connector from ECM to body ground .4: Standard resistance of harness and connector from IG2 relay to fuel injector .6: Standard Injection Volume of fuel injectors .7: Standard Voltage of Battery .8: Standard Voltage of power source of No.9: Standard Resistance of harness and connector Ignition coil - ECM .10: Standard Resistance of harness and connector Ignition Coil – Body Ground .11: Standard Resistance of harness and connector Ignition coil – IG2 relay .12: Standard Resistance of harness and connector Ignition coil – ignition or starter switch assembly .13: Standard Resistance of harness and connector Ignition coil – ignition or starter switch assembly .14: Standard Insulation Resistance of Spark Plug.
Reasons for choosing the topic In recent years, Vietnam's economy has been developing strongly. Besides our country's technology is also gradually progressing. Including the powertrain and automobile manufacturing industry, we have joint ventures with many famous companies in the world for rapid production and assembly. To support the improvement of qualifications and techniques, our team of engineers must research and manufacture themselves, which is an equipment level requirement.
There are many details about us that make us interested in the development of countries in the region and around the world. Therefore, our team carried out the project: RESEARCHING ON TOYOTA VIOS 2022 2NR-FE ENGINE CONTROL SYSTEM, to help students have a more detailed view of engines while improving their understanding, about the structure and principles of engine control systems. Beside, we bring detailed in systems inspection and repair follow manufacturer documents. Research purposes The aim of the project is to research a model of vehicle for inspection, evaluation and repairing analysis base on its parameters that addresses the need for enhanced knowledge about new internal combustion engine.