Lesson Notes By Weeks and Term - Senior Secondary 2

Transmission system I

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TERM – 1ST TERM

WEEK SEVEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: TRANSMISSION SYSTEM I

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

I.) Define transmission system

II.) Identify the types of transmission components

III.) Describe the clutch

IV.) Mention the types of clutch

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 explains the meaning of transmission system and discuss the types of transmission components

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher explains the clutch as a component of transmission system and identify the types of clutch

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

TRANSMISSION SYSTEM I

The transmission system, also known as a gearbox or transmission, is a mechanical component in vehicles equipped with internal combustion engines. It transfers power from the engine to the wheels while allowing the driver to control the vehicle's speed and direction by selecting different gear ratios.

Types of Transmission Components

  1. Gears: Toothed wheels that transmit power from the engine to the wheels at different speeds.
  2. Shafts: Mechanisms that connect gears and transfer rotational motion between them.
  3. Clutches: Devices used to engage and disengage power transmission between the engine and gearbox.

Clutch

A clutch is a mechanical device used to engage and disengage power transmission between the engine and the transmission system. It allows the driver to smoothly start, stop, and shift gears by temporarily interrupting the power flow from the engine to the gearbox.

Types of Clutches

  1. Friction Clutch: The most common type of clutch, which uses friction surfaces to engage and disengage power transmission. It consists of a pressure plate, clutch disc, and flywheel.
  2. Hydraulic Clutch: A type of friction clutch that uses hydraulic pressure to engage and disengage the clutch. It offers smoother operation and requires less effort from the driver.
  3. Centrifugal Clutch: Typically used in small engine applications, such as lawn mowers and go-karts. It automatically engages when the engine reaches a certain speed and disengages when the engine slows down.
  4. Electromagnetic Clutch: Utilizes electromagnetic force to engage and disengage power transmission. It's commonly used in applications where rapid engagement and disengagement are required, such as in automatic transmissions and industrial machinery.

EVALUATION: 1. What is a transmission system

  1. Mention the basic types of a transmission system
  2. Define a clutch
  3. Identify 3 types of clutch you know

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively