SHS2 Applied Technology · Semester 1 Week 6: Introduction to Vehicle Technology

Lesson notes

Learning Objectives

Indicator: 2.1.2.LI.4 - Explain leaf, coil and air suspension systems

By the end of the lesson, learners can:

Identify and describe the three main types of suspension springs: leaf, coil, and air, stating the physical features and construction of each.
Explain the working principle of leaf springs, coil springs, and air springs, including how each supports the vehicle weight and absorbs road shock.
Compare the three suspension systems based on ride comfort, load-carrying capacity, cost, and typical vehicle applications, using justifiable principles to choose between them for different uses.
Test a telescopic shock absorber for serviceability and explain how shock absorbers work together with springs in a suspension system.
Diagnose common problems associated with leaf, coil, and air suspension systems and recommend appropriate maintenance or repair actions.

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Curriculum details

Strand: Automotive Technology (Strand 1)
Sub-strand: Introduction to Vehicle Technology (1.2)
Content standard: 2.1.2.CS.1 - 2.1.2.CS.1 Demonstrate knowledge and understanding of vehicle steering and suspension systems 2.1.2.LO.1 Perform steering and suspension system inspection, maintenance, diagnosis and repairs with limited supervision
Indicator: 2.1.2.LI.4 - Explain leaf, coil and air suspension systems
Suggested placement: Semester 1, Week 6 (Week 6 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 75

Exemplars (from the NaCCA curriculum)

Problem-Based Learning:
- Using sketches, chart or real object learners brainstorm the problem associated with the various springs such as leaf, coil and air suspension systems,
- Assist learners to identify the various shock absorbers
- Guide learners to remove and test telescopic shock absorber for serviceability

Assessment (2.1.2.AS.4). The document marks these depth-of-knowledge levels for this indicator: Level 4 Extended critical thinking and reasoning.

Teaching and Learning Materials:
- Chart or real object
- Sketches
- Vi deo/YouTube
- I ndustrial visit