Lesson Notes By Weeks and Term - Senior Secondary 3

Methods of supporting various components of chassis

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TERM – 1ST TERM

WEEK THREE

Class: Senior Secondary School 3

Age: 17 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: METHODS OF SUPPORTING VARIOUS COMPONENTS OF CHASSIS

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Identify the methods of Supporting Various Components of the Chassis

II.) Identify the materials for automobile body and chassis structure

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher discusses the methods of Supporting Various Components of the Chassis

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher identify the materials for automobile body and chassis structure

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

METHODS OF SUPPORTING VARIOUS COMPONENTS OF CHASSIS

Methods of Supporting Various Components of the Chassis

  1. Suspension System: Supports the weight of the vehicle and provides stability and ride comfort. Components include springs, shocks, struts, control arms, and sway bars.
  2. Frame Rails and Crossmembers: Provide structural support and rigidity to the chassis. They distribute the vehicle's weight and absorb impacts.
  3. Engine Mounts and Transmission Mounts: Secure the engine and transmission to the chassis, dampening vibrations and preventing excessive movement.
  4. Body Mounts: Connect the body of the vehicle to the chassis, reducing noise, vibration, and harshness (NVH) and providing isolation from road imperfections.

Materials for automobile body and chassis structure

Automobile bodies and chassis structures are typically made from a variety of materials depending on their intended use, cost considerations, and performance requirements. Some common materials include:

  1. Steel: Traditional and widely used due to its strength, durability, and cost-effectiveness. High-strength steels are often used in modern vehicles to improve safety and reduce weight.
  2. Aluminum: Lightweight and corrosion-resistant, aluminum is used in body panels, chassis components, and engine parts to reduce overall vehicle weight and improve fuel efficiency.
  3. Carbon Fiber: Known for its exceptional strength-to-weight ratio, carbon fiber is used in high-performance vehicles to reduce weight while maintaining structural integrity. It's commonly used in sports cars and supercars.
  4. Fiberglass: Lightweight and relatively inexpensive, fiberglass is often used in body panels for sports cars, custom vehicles, and aftermarket modifications.
  5. Magnesium: Offers excellent strength-to-weight ratio and is often used in components where weight reduction is critical, such as transmission cases and steering wheels.
  6. Plastics and Composites: Used in various interior and exterior components for their versatility, lightweight properties, and ability to be molded into complex shapes.
  7. Advanced High-Strength Steel (AHSS): Utilized in modern vehicles for its improved strength and crashworthiness, AHSS allows automakers to design lighter vehicles without sacrificing safety.

EVALUATION: 1. Identify 3 methods of Supporting Various Components of the Chassis

  1. Identify 5 materials for automobile body and chassis structure

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively