The heat engines are using as a power source for transportation or co-generation system. The engines will continue to be used
in the future. However, the heat source of the engine is combustion! The combustion has various problems such as emission
of air pollutants and depletion of fossil fuels. On the other hand, the combustion has big advantages due to the high energy
density. It is difficult to find out the high-density energy source instead of combustion. As mentioned above, I will explain
from the basic point of thermodynamics and combustion dynamics in this lecture what is important for the high efficiency engine
and why combustion phenomena in the engine. Furthermore, I will discuss ways to control emission, pollution and reduce energy
loss. In the latter half, I will also explain the various engine systems such as direct injection gasoline engine, hybrid
engine, combined cycle, and will discuss the thermal efficiency from the macroscopic point. I will invite a specialist in
the lecture 13th.
The engine system associates with all mechanical engineering areas. I am one of a specialist of combustion dynamics and also
a mechanical engineer. So I will explain the engine system based on the combustion phenomena inside the engine. From the second
law of thermodynamics, the combustion process in the gas cycle is very important issues. However, as represented by the theoretical
cycle of gasoline engines, it is impossible that to do constant combustion in the actual machine. The purpose of this lecture
is to explain contradictions between the theories and actual engines from combustion phenomena, and will discuss the present
and future engines.
- Students can understand the basic structure of heat engine such as spark ignition engine, compression ignition engine, gas turbine engine.
- Students can understand the characteristics of various thermal cycles and can explain the characteristics of throttling cycle and supercharged cycle.
- Students explain the fundamentals of combustion phenomena in heat engines, for example, it is possible to explain fundamental things about quenching distance, burning velocity, flammability limits, turbulent flame structure, etc.
- Students can understand the influence of the characteristics of the combustion phenomenon on the basic characteristics of the heat engine. Based on the above three items, students can be integrated to explain the characteristics of the heat engine.
- Based on the thermodynamics and the chemical reaction energy, students can explain application and development of hybrid systems with other energy sources such as fuel cell.
| Class schedule | HW assignments (Including preparation and review of the class.) | Amount of Time Required | |
|---|---|---|---|
| 1. | Introduction (prospects of Energy Environment) · Depletion problem of fossil fuel and environmental burden of combustion waste · Structure of various internal combustion engines and external combustion engines |
Solve the problems of Thermodynamics 2 textbook. Especially, the problems in the Chapter 8 are very important and should be completely understood. | 190minutes |
| 2. | Gas flow in the engine and various thermal cycles · Flow and role of working fluid · The thermal cycle characteristics of the heat engine. |
Understand the theoretical thermal cycle of the Otto cycle and the diesel cycle. | 190minutes |
| 3. | Fundamentals of combustion phenomena · Diffusion flames and premixed flames, laminar flames and turbulent flames Flame stability and flammability limit, ignition characteristics |
Review the chapter 7 of Thermodynamics 2 textbook. | 190minutes |
| 4. | Structure of compression ignition engine (diesel engine) · Structure and characteristics of compression ignition engine · Diesel cycle and efficiency, super charge cycle |
Study the basic structure (cross sectional view) of the compression ignition engine. | 190minutes |
| 5. | Combustion in compression ignition engine · Compression ignition engine fuel and combustion · Spray combustion and soot formation, fuel injection pump |
Preparation for the combustion phenomenon of the compression ignition engine. | 190minutes |
| 6. | Structure of Spark Ignition Engine (Gasoline Engine) · Structure and characteristics of spark ignition engine · Throttle cycle and super charged cycle |
Study the structure of the spark ignition engine (cross sectional view). | 190minutes |
| 7. | Combustion in spark ignition engine · Fuel and combustion of spark ignition engine · Antiknock property and octane number · Direct injection of gasoline engine |
Investigate the combustion phenomena in the spark ignition engine. | 190minutes |
| 8. | Midterm exam | The range of midterm exam is from 1st to 7th lecture. | 190minutes |
| 9. | High efficiency engine and limit of combustion · Characteristics of turbulent combustion and its limitations · Pressure loss of working fluid in the gas turbine |
Investigate what is the requirement for the modern high efficiency engine. Discuss two or more examples for that. | 190minutes |
| 10. | Structure of turbine engine · Structure of gas turbine engine and compressor · Turbojet engine and turbofan engine. |
Study the structure of the gas turbine engine (cross section, etc). | 190minutes |
| 11. | Gas turbine combustor · Fuel and combustion · Application and adaptability to combined cycles Application and development of gas turbine engine · Types of gas turbine engines (industrial, power generation, marine, automotive) · From subsonic to supersonic (high supersonic and hypersonic propulsion agencies) · Propulsion institutions in space (solid rockets, liquid rockets, liquid propellants, solid propellants) |
Investigate combustion phenomena in gas turbine engine | 100minutes |
| 12. | Invited special lecture | Will be announce in the lecture on 11th. | 190minutes |
| 13. | Summary Future prospects for engine systems Application and problems for hybrid systems |
Review the topics of 1st ~ 12th lectures. | 190minutes |
| 14. | Final examination and comment. | Review all topics of pervious lectures. | 190minutes |
| Total. | - | - | 2570minutes |
| Midterm exam | Final exam | Total. | |
|---|---|---|---|
| 1. | 15% | 5% | 20% |
| 2. | 15% | 5% | 20% |
| 3. | 20% | 20% | |
| 4. | 20% | 20% | |
| 5. | 20% | 20% | |
| Total. | 30% | 70% | - |
Mid-term exam (writing) 30%, final exam (writing) 70%.
The structure of the heat engine (spark ignition engine, compression ignition engine, gas turbine) understands.
It is possible to properly explain the difference between each theoretical gas cycle and the actual machine.
The credit can be acquired (you can get 60 point or more) if the above two items are possible.
The structure of the heat engine (spark ignition engine, compression ignition engine, gas turbine) understands.
It is possible to properly explain the difference between each theoretical gas cycle and the actual machine.
The credit can be acquired (you can get 60 point or more) if the above two items are possible.
| ways of feedback | specific contents about "Other" |
|---|---|
| Feedback in the class | 授業内および授業外で適宜フィードバックを行う |
No textbooks used.
Following are references.
1 John B. Heywood, Internal Combustion Engine Fundamental, McGRAW-HILL.
2 Richard Stone, Introduction to Internal Combustion Engines Third Edition, palgrave macmillan.
3 The Jet Engine, Rolls Royce.
Reference materials will be distribute in each lecture.
Following are references.
1 John B. Heywood, Internal Combustion Engine Fundamental, McGRAW-HILL.
2 Richard Stone, Introduction to Internal Combustion Engines Third Edition, palgrave macmillan.
3 The Jet Engine, Rolls Royce.
Reference materials will be distribute in each lecture.
Basic knowledge such as fluid dynamics, thermodynamics, mechanical mechanics, material mechanics, and so on are very important
in this lecture. The students taking this course should be finished thermodynamics 1 and thermodynamics 2. Recommend the students
who have the knowledge in the fundamentals of combustion dynamics, chemical kinetics, and high-speed high-temperature gas
dynamics.
- 15: 00 ~ 16: 40 on Tuesday.
Reservation required by e-mail.
yahagi@sic.shibaura-it.ac.jp
- Course that cultivates a basic self-management skills
| Work experience | Work experience and relevance to the course content if applicable |
|---|---|
| N/A | N/A |
- 4.QUALITY EDUCATION
- 7.AFFORDABLE AND CLEAN ENERGY
- 9.INDUSTRY, INNOVATION AND INFRASTRUCTURE
- 12.RESPONSIBLE CONSUMPTION & PRODUCTION
- 13.CLIMATE ACTION
Last modified : Sat Sep 09 08:00:17 JST 2023