Knowledge of Light Vehicle Fuel, Ignition, Air and Exhaust System Units and Components


Unit Reference Number:     H/601/3725

Learning OutcomesAssessment Criteria
1Understand how light vehicle engine fuel systems operate1.1Identify light vehicle engine fuel system components
1.2Describe the construction and operation of light vehicle engine fuel systemsa. multi point injection
b. single point injection
1.3Compare key light vehicle engine fuel system components and assemblies against alternatives to identify differences in construction and operation
1.4Identify the key engineering principles that are related to light vehicle engine fuel systemsa. properties of fuels
b. combustion processes
c. exhaust gas constituents
1.5State common terms used in light vehicle engine fuel system design
2Understand how light vehicle engine ignition systems operate2.1Identify light vehicle engine ignition system components
2.2Describe the construction and operation of light vehicle engine ignition systemsa. distributor ignition systems
b. distributor less ignition systems
2.3Compare key light vehicle engine ignition system components and assemblies against alternatives to identify differences in construction and operation
2.4Identify the key engineering principles that are related to light vehicle engine ignition systemsa. flame travel
b. ignition timing
2.5State common terms used in key light vehicle engine ignition system design
3Understand how light vehicle engine air supply and exhaust systems operate3.1Identify light vehicle engine air supply and exhaust system components
3.2Describe the construction and operation of light vehicle engine air supply and exhaust systemsa. supercharging
b. turbocharging
c. exhaust gas recirculation (EGR)
d. secondary air injection
e. catalytic converters
3.3Compare key light vehicle engine air supply and exhaust system components and assemblies against alternatives to identify differences in construction and operation
3.4Identify the key engineering principles that are related to light vehicle engine air supply and exhaust systemsa. sound absorption
b. reduction of harmful emissions
3.5State common terms used in key light vehicle engine air supply and exhaust system design
4Understand how to check, replace and test light vehicle engine fuel system units and components4.1Describe how to remove and replace engine fuel, air supply and exhaust system units and components
4.2Describe common types of testing methods used to check the operation of engine fuel, air supply and exhaust system systems and their purpose
4.3Explain how to evaluate the performance of replacement units against vehicle specification
4.4Explain common faults found in light vehicle fuel, air supply and exhaust systems and their causes