Lesson Plan: Types of Engine and Fluid Flywheel II
**Grade Level**: Senior Secondary 3
**Subject**: Auto Mechanics
**Duration**: 90 minutes
**Lesson Topic**: Types of Engine and Fluid Flywheel II
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### Learning Objectives:
By the end of this lesson, students will be able to:
1. Identify and differentiate various types of internal combustion engines.
2. Explain the working principles of different types of engines.
3. Understand the components and functionalities of a fluid flywheel.
4. Describe the operational principles of a fluid flywheel and its application in automotive technology.
### Materials Needed:
- Whiteboard and markers
- Projector and computer for multimedia presentation
- Handouts with diagrams and notes on engine types and fluid flywheels
- Engine parts and components for demonstration (if available)
- Fluid flywheel model or diagram
- Videos on engine types and fluid flywheels
### Lesson Structure:
**Introduction (10 minutes)**:
1. **Greetings and Attendance**: Greet students and take attendance.
2. **Recap of Previous Lesson**: Briefly review what was covered in the previous lesson about engines.
3. **Introduction to New Topic**: Introduce the day's topic. Highlight why it is important for automotive technology.
**Instructional Input (30 minutes)**:
1. **Types of Internal Combustion Engines**:
- Introduce different types of engines:
- **Spark Ignition Engines (SI Engines)**: Explain 2-stroke and 4-stroke engines.
- **Compression Ignition Engines (CI Engines)**: Explain 2-stroke and 4-stroke diesel engines.
- **Rotary (Wankel) Engines**: Describe the design and functionality.
- Discuss the key components and the cycle of operations in each type of engine.
- Highlight the advantages and disadvantages of each type.
2. **Fluid Flywheel**:
- Explain what a fluid flywheel is and its purpose in automotive transmissions.
- Discuss the components of a fluid flywheel: pump impeller, turbine runner, and transmission fluid.
- Illustrate the working principle using diagrams and videos:
- Show how the impeller rotates with the engine crankshaft.
- Explain how kinetic energy is transferred from the impeller to the turbine.
- Describe how the fluid medium facilitates smooth power transmission without direct mechanical contact.
**Guided Practice (20 minutes)**:
1. **Group Activity**: Divide students into small groups and provide each group with diagrams and handouts on different types of engines and fluid flywheels.
2. **Hands-on Analysis**:
- Have each group identify key components on the diagrams.
- Ask them to explain the working principles to the rest of the class.
- If possible, use real engine parts for a tactile learning experience.
**Independent Practice (15 minutes)**:
1. **Worksheet**: Distribute worksheets that include questions on types of engines and fluid flywheels.
2. **Individual Work**: Students work individually to complete the worksheet. Move around the classroom to provide assistance and answer questions.
**Assessment and Review (10 minutes)**:
1. **Worksheet Review**: Review answers to the worksheet questions collectively with the class.
2. **Q&A Session**: Encourage students to ask questions and clarify any doubts about the lesson.
**Conclusion (5 minutes)**:
1. **Summarize Key Points**: Recap the main points of the lesson.
2. **Homework Assignment**: Assign students to write a short report on the advantages and disadvantages of different types of engines and how fluid flywheels improve automotive efficiency.
3. **Preview of Next Lesson**: Briefly introduce what will be covered in the next class.
### Follow-up:
- Review homework assignments to assess students' understanding.
- Plan a practical session where students can observe actual engines and fluid flywheels in a workshop setting.
By structuring the lesson in this manner, students will gain a thorough understanding of different types of engines and the principles of fluid flywheels, facilitating both theoretical knowledge and practical application in auto mechanics.