Lesson Notes By Weeks and Term - Senior Secondary 1

Braking system IV

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TERM – 3RD TERM

WEEK FOUR

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: BRAKING SYSTEM IV

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

I.) Identify the components of a Mechanical Braking System

II.) Identify the components of a Hydraulic Braking System

III.) Mention the advantages of Mechanical Braking System

IV.) Mention the disadvantages of Mechanical Braking System

V.) Mention the advantages of hydraulically Braking System

VI.) Mention the advantages of hydraulically Braking System

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 components of mechanically and hydraulically Operated brakes

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher explain the advantages and disadvantages of mechanically and hydraulically Operated brakes

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

BRAKING SYSTEM IV

Components of a Mechanical Braking System

  1. Brake Pedal: The pedal that the driver presses to initiate braking.
  2. Brake Lever (for bicycles): Similar to the brake pedal, but used on bicycles to activate the braking mechanism.
  3. Brake Cable or Rod: Transmits the force from the brake pedal or lever to the braking mechanism.
  4. Brake Caliper (for disc brakes) or Brake Drum (for drum brakes): The housing for the brake mechanism, containing brake pads (for disc brakes) or brake shoes (for drum brakes).
  5. Brake Pads (for disc brakes) or Brake Shoes (for drum brakes): The friction material that presses against the brake disc (for disc brakes) or the inside of the brake drum (for drum brakes) to slow down or stop the vehicle.

Components of a Hydraulic Braking System

  1. Brake Pedal: The pedal that the driver presses to initiate braking.
  2. Master Cylinder: Converts the mechanical force applied to the brake pedal into hydraulic pressure. It contains a piston that pushes brake fluid through the brake lines.
  3. Brake Lines: Transmit brake fluid from the master cylinder to the brake calipers or wheel cylinders.
  4. Brake Calipers (for disc brakes) or Wheel Cylinders (for drum brakes): Contains pistons that press brake pads (for disc brakes) or brake shoes (for drum brakes) against the brake disc or drum to slow down or stop the vehicle.
  5. Brake Fluid: The hydraulic fluid that transmits pressure from the master cylinder to the brake calipers or wheel cylinders.

Advantages of Mechanical Braking System:

  1. Mechanical braking systems are generally simpler in design and construction, with fewer components and moving parts.
  2. Due to their simple design, mechanical brakes are less prone to failure from fluid leaks or hydraulic system malfunctions.
  3. Mechanical braking systems tend to have lower initial costs and maintenance expenses compared to hydraulic systems, making them more affordable for vehicles with budget constraints.

Disadvantages of Mechanical Braking System:

  1. Mechanical brakes may lack the precision, responsiveness, and stopping power of hydraulic brakes, especially in high-speed or heavy-duty applications.
  2. Mechanical brakes may require more effort from the driver to achieve effective braking, especially in situations where greater force is needed to stop the vehicle quickly.

Advantages of Hydraulic Braking System:

  1. Hydraulic braking systems offer superior braking performance, with greater stopping power, improved control, and faster response times compared to mechanical brakes.
  2. Hydraulic brakes amplify the force applied by the driver, requiring less effort to achieve efficient braking.
  3. Hydraulic braking systems can be easily integrated with advanced safety features such as anti-lock braking system (ABS) and electronic brake-force distribution (EBD) to enhance overall braking performance and safety.

Disadvantages of Hydraulic Braking System

  1. Hydraulic braking systems are more complex in design and construction, with additional components such as master cylinders, brake lines, and hydraulic pistons.
  2. Hydraulic systems may require more specialized maintenance and repair procedures due to the complexity of hydraulic components and fluid systems.

EVALUATION: 1. Identify 4 components of mechanically operated brakes

  1.       Identify 4 components of hydraulically Operated brakes
  2. Mention 2 advantages and disadvantages of mechanically operated brakes
  3. Mention 2 advantages and disadvantages of hydraulically Operated brakes

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively