Lesson Notes By Weeks and Term - Senior Secondary 2

Automobile engine

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TERM – 1ST TERM

WEEK SIX

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: AUTOMOBILE ENGINE

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

I.) Define engine cylinders

II.)  Identify the forms of engine arrangement

III.) Mention the types of engine cylinders

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 engine cylinders and identify the forms of engine arrangement

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher identify and discuss the types of engine cylinders

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

AUTOMOBILE ENGINE

Engine cylinders

Engine cylinders are the chambers in which the combustion of fuel and air occurs within an internal combustion engine. Each cylinder typically contains a piston that moves up and down within it, driven by the force generated from the combustion process. The number of cylinders in an engine varies depending on the engine's design and intended application. Engines can have a single cylinder, as seen in some small motorcycles or generators, or multiple cylinders arranged in a specific configuration, such as inline, V-shaped, or horizontally opposed, as found in cars, trucks, aircraft, and other machinery.

Forms of Engine Arrangements

  1. In-line Engine: In this arrangement, cylinders are arranged in a straight line along a single axis. This configuration is commonly used in four-cylinder and six-cylinder engines in vehicles like sedans and SUVs.
  2. Vee Engine: Cylinders are arranged in a V-shape configuration, with two banks of cylinders angled from each other. This arrangement is often used in V6, V8, and other V-shaped engines, offering a compact design while still providing high power output.
  3. iii. Horizontally Opposed Engine: Also known as a flat or boxer engine, cylinders are arranged in two banks opposite each other, lying flat on either side of the crankshaft. This configuration results in a lower center of gravity and smoother operation due to better balance. It's commonly used in vehicles like Subaru cars and certain aircraft.

Types of Engine Cylinder

  1. Single Cylinder Engine: These engines have only one cylinder, typically used in small applications such as motorcycles, lawn mowers, and portable generators.
  2. Multi Cylinder Engine: These engines have multiple cylinders arranged in a specific configuration, providing smoother operation, higher power output, and better balance compared to single-cylinder engines. They are used in various vehicles and machinery, ranging from cars and trucks to airplanes and ships.

EVALUATION: 1. What are engine cylinders

  1. Mention the 4 forms of engine cylinders
  2. State the types of engine cylinders

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively