Lesson Notes By Weeks and Term - Senior Secondary 2

Automobile: A diesel engine

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TERM – 1ST TERM

WEEK FOUR

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: AUTOMOBILE: A DIESEL ENGINE I

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

I.) Explain the ways to maintain a two stroke cycle engine

II.) Identify the ways of maintaining a four stroke cycle engine.

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 ways of maintaining a two stroke cycle engine

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher discuss the maintenance of a four stroke cycle engine

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: A DIESEL ENGINE I

Maintaining both two-stroke and four-stroke cycle engines involves similar principles, but there are some differences due to their design and operation:

Maintenance for Two-Stroke Cycle Engines:

  1. Air Filter: Clean or replace the air filter regularly to prevent debris from entering the engine.
  2. Fuel Mixture: Ensure the correct fuel-to-oil mixture ratio according to the manufacturer's recommendations.
  3. Spark Plug: Check and clean the spark plug regularly, and replace it if necessary.
  4. Cooling System: Check coolant levels and inspect hoses for leaks or damage.
  5. Exhaust System: Inspect for leaks, cracks, or damage.
  6. Ignition System: Check the ignition timing and replace ignition components as needed.
  7. Lubrication: Use high-quality two-stroke engine oil and check oil levels regularly.
  8. Compression: Monitor engine compression through regular tests.
  9. Carbon Buildup: Remove carbon buildup from exhaust components.

Maintenance for Four-Stroke Cycle Engines

  1. Air Filter: Clean or replace the air filter regularly to maintain proper airflow.
  2. Fuel System: Check fuel lines, filters, and injectors for clogs or leaks.
  3. Oil Change: Change the engine oil and oil filter according to the manufacturer's recommendations.
  4. Spark Plugs: Inspect and replace spark plugs as needed.
  5. Cooling System: Check coolant levels, hoses, and radiator for leaks or damage.
  6. Valve Adjustment: Periodically check and adjust valve clearances as specified by the manufacturer.
  7. Timing Belt/Chain: Replace timing belts or chains at recommended intervals.
  8. Exhaust System: Inspect for leaks, corrosion, or damage.

EVALUATION: 1. Mention 5 maintenance techniques for a two stroke cycle engine

  1. Mention 5 maintenance techniques for a four stroke cycle engine

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively