Lesson Notes By Weeks and Term v4 - SHS 3
INTRODUCTION TO VEHICLE TECHNOLOGY
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INTRODUCTION TO VEHICLE TECHNOLOGY
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Applied Technology
Class: SHS 3
Term: 1st Term
Week: 4
Grade code: 3.1.1.LI.5
Strand code: 1
Sub-strand code: 2
Content standard code: 3.1.1.CS.1
Indicator code: 3.1.1.LI.5
Theme: AUTOMOTIVE TECHNOLOGY
Subtheme: INTRODUCTION TO VEHICLE TECHNOLOGY
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This lesson introduces the vehicle exhaust system, a critical part of any internal combustion engine vehicle. We see and hear the effects of exhaust systems every day on our roads in Ghana – from the quiet hum of a new car to the loud roar of a faulty "trotro" or "okada." Understanding this system is crucial for appreciating how a vehicle manages harmful gases, controls noise, and maintains engine efficiency. This knowledge is not just for mechanics; it's essential for any responsible driver or citizen concerned about health, safety, and environmental protection. We will break down the system into its main parts and understand the important job each one does.
A. Introduction: What is the Purpose of an Exhaust System?
The exhaust system in a vehicle has three primary jobs: Safety: To safely channel hot, poisonous exhaust gases from the engine to the rear of the vehicle, away from the driver and passengers. Noise Reduction: To reduce the loud noise created by the combustion process in the engine cylinders. Pollution Control: To chemically treat the exhaust gases to reduce the amount of harmful pollutants released into the atmosphere.
The entire system works as a team. Let's look at the key players in the order that the exhaust gas meets them. B. The Main Components of the Exhaust System
Imagine the journey of the exhaust gas as it leaves the engine. It travels through a series of components, each with a special task.