Lesson Notes By Weeks and Term - Senior Secondary 2

Engine lubrication II

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TERM – 2ND TERM

WEEK SIX

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: ENGINE LUBRICATION II

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

I.) Describe oil filters

II.) Identify the qualities of a lubricants

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 what an oil filter i, to the students

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher identify and discuss qualities of oil filters

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

ENGINE LUBRICATION II

An oil filter is a crucial component in a vehicle's lubrication system. Its primary function is to remove contaminants and impurities from the engine oil as it circulates through the engine. This helps to maintain the cleanliness of the oil, prolonging its effectiveness and protecting engine components from wear and damage.

Qualities of lubricants

  1. Viscosity: The viscosity of a lubricant refers to its resistance to flow. It's essential for a lubricant to have the right viscosity to ensure proper lubrication of moving parts under different operating conditions.
  2. Viscosity Index: The viscosity index (VI) is a measure of how much a lubricant's viscosity changes with temperature. A higher VI indicates less viscosity change with temperature variations, providing better lubrication performance over a wider temperature range.
  3. Film Strength: A good lubricant should have sufficient film strength to withstand heavy loads and pressures without breaking down.
  4. Resistance to Oxidation: Lubricants should resist oxidation, which occurs when they react with oxygen at high temperatures, leading to the formation of sludge, varnish, and other deposits. Oxidation-resistant lubricants maintain their effectiveness and cleanliness over extended periods.
  5. Corrosion Protection: Lubricants should protect metal surfaces from corrosion by forming a barrier that prevents moisture and corrosive contaminants from reaching the metal. This helps to prolong the lifespan of components and maintain their performance.
  6. Compatibility: Lubricants should be compatible with the materials used in the system they are lubricating. They should not cause damage or degradation to seals, gaskets, or other components.
  7. Cleanliness: Lubricants should be clean and free from contaminants such as dirt, debris, and metal particles. Contaminant-free lubricants help to maintain the cleanliness of the system and prevent wear and damage to components.

EVALUATION: 1. What is oil filters?

  1. Mention 5 qualities of good lubricants

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively