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All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. |
SOUTH AFRICAN QUALIFICATIONS AUTHORITY |
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: |
Demonstrate knowledge of electronic fuel injection and engine management systems |
SAQA US ID | UNIT STANDARD TITLE | |||
244054 | Demonstrate knowledge of electronic fuel injection and engine management systems | |||
ORIGINATOR | ||||
SGB Vehicle Maintenance | ||||
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY | ||||
- | ||||
FIELD | SUBFIELD | |||
Field 06 - Manufacturing, Engineering and Technology | Manufacturing and Assembly | |||
ABET BAND | UNIT STANDARD TYPE | PRE-2009 NQF LEVEL | NQF LEVEL | CREDITS |
Undefined | Regular | Level 3 | NQF Level 03 | 10 |
REGISTRATION STATUS | REGISTRATION START DATE | REGISTRATION END DATE | SAQA DECISION NUMBER | |
Passed the End Date - Status was "Registered" |
2008-02-06 | 2009-02-18 | SAQA 0875/08 | |
LAST DATE FOR ENROLMENT | LAST DATE FOR ACHIEVEMENT | |||
2010-02-18 | 2013-02-18 |
In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise. |
This unit standard is replaced by: |
US ID | Unit Standard Title | Pre-2009 NQF Level | NQF Level | Credits | Replacement Status |
260679 | Demonstrate knowledge of fuel supply and engine management systems | Level 3 | NQF Level 03 | 10 |
PURPOSE OF THE UNIT STANDARD |
This unit standard is for people in the automotive engineering industry who are required to have knowledge of fuel injection systems.
People credited with this unit standard are able to: |
LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING |
UNIT STANDARD RANGE |
The following scope and context applies to the whole unit standard:
Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. |
Specific Outcomes and Assessment Criteria: |
SPECIFIC OUTCOME 1 |
Demonstrate knowledge of fuel injection principles. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The purpose and operation of a fuel injection system are explained in terms of fuel metering and supply. |
ASSESSMENT CRITERION 2 |
Electronic fuel injection systems are described in terms of the advantages over a carburettor or mechanical fuel system. |
ASSESSMENT CRITERION RANGE |
Atomisation, fuel economy, fuel distribution, idling, emission, engine power, cold weather, driveability. |
ASSESSMENT CRITERION 3 |
The effects of pressure and suction (vacuum) on the fuel injection process is described in terms of fuel flow. |
ASSESSMENT CRITERION 4 |
The differences between direct and indirect fuel injection are described according to the engine operation and performance. |
ASSESSMENT CRITERION 5 |
Relevant safety requirements in working with fuel are identified in terms of health and safety legislation. |
ASSESSMENT CRITERION 6 |
The different types of injectors and nozzle designs are described according to the manufacturer's specifications. |
ASSESSMENT CRITERION RANGE |
Throttle body type injectors, electromagnetic fuel injector, top feed type injector, bottom feed type injector. Injector nozzles include ring gap, single orifice, multi-orifice, multi-orifice with dual stream. |
SPECIFIC OUTCOME 2 |
Demonstrate knowledge of throttle body injection (TBI) system. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Controlling the air/fuel mixture in a throttle body injection system is explained in terms of the application of the throttle valve. |
ASSESSMENT CRITERION 2 |
The main components of the fuel system are identified and described in terms of their purpose and location. |
ASSESSMENT CRITERION 3 |
The configuration and layout of a TBI system are described according to the manufacturer's specifications. |
ASSESSMENT CRITERION 4 |
Fuel system components are identified in terms of their location on the vehicle and the fuel flow path. |
SPECIFIC OUTCOME 3 |
Demonstrate knowledge of continuous fuel injection system. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Controlling the air/fuel mixture in a continuous injection system is explained in terms of the application of the throttle valve. |
ASSESSMENT CRITERION 2 |
The main components of the fuel system are identified and described in terms of their purpose and operation. |
ASSESSMENT CRITERION 3 |
The different types of continuous injection systems are described in terms of method of operation. |
ASSESSMENT CRITERION 4 |
Fuel system components are identified in terms of their location on the vehicle and the fuel flow path. |
SPECIFIC OUTCOME 4 |
Demonstrate knowledge of pulsed fuel injection system. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Fuel metering and supply are explained in terms of the components used and their functions. |
ASSESSMENT CRITERION 2 |
The different types of pulsed injection systems are explained in terms of operating principles according to manufacturer's specifications. |
ASSESSMENT CRITERION 3 |
Pulse times and pulse periods are explained in terms of the relationship with the electronic control unit. |
ASSESSMENT CRITERION 4 |
Fuel system components are identified in terms of their location on the vehicle and the fuel flow path. |
SPECIFIC OUTCOME 5 |
Demonstrate knowledge of and identify the components of engine management systems. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The purpose and function of engine management systems are explained in terms of engine performance and exhaust emissions. |
ASSESSMENT CRITERION 2 |
The components used for acquiring and transmitting measured variables are explained in terms of their purpose and function. |
ASSESSMENT CRITERION RANGE |
Temperature sensors, lambda sensors, engine speed and crankshaft position sensors, camshaft position sensor, engine load sensors (air flow sensor, hot-wire air-mass sensor, hot-film air-mass sensor, intake manifold pressure sensor, throttle valve sensor), engine and intake-air sensors, battery voltage, vehicle speed sensors, knock sensors. |
ASSESSMENT CRITERION 3 |
Exhaust gas recirculation (EGR) control is explained in terms of minimising exhaust emissions and lowering exhaust gas temperatures. |
ASSESSMENT CRITERION 4 |
The idle speed control system is explained and the components used to regulate idle speed are described according to the manufacturer's specifications. |
ASSESSMENT CRITERION RANGE |
Idle-speed actuator, load compensation sensors, throttle-valve switch, idle-speed switch, temperature sensor, idle-speed control circuit. |
ASSESSMENT CRITERION 5 |
The purpose and function of the electronic control unit (ECU) are explained in terms of processing variables. |
ASSESSMENT CRITERION 6 |
The systems controlled by the electronic control unit (ECU) are identified and described in terms of data transfer. |
ASSESSMENT CRITERION RANGE |
Systems controlled by the ECU include transmission control, electronic throttle control (drive by wire), electronic engine management, traction control (ARS), electronic stability control, adaptive cruise control, on-board computer. |
ASSESSMENT CRITERION 7 |
Common engine management system faults are described in terms of the effect on engine perfomance. |
SPECIFIC OUTCOME 6 |
Demonstrate knowledge of air pollution and vehicle exhaust emissions. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Air pollution is described in terms of characteristics and how it is produced. |
ASSESSMENT CRITERION RANGE |
Natural air pollution (forest fires, wind-blown dust, decay of vegetation, erupting volcanoes), man-made air pollution (factories, home industry, internal combustion engines). |
ASSESSMENT CRITERION 2 |
The major and minor components of exhaust gasses are described in terms of their properties. |
ASSESSMENT CRITERION RANGE |
Major components include water, carbon dioxide, oxides of nitrogen. Minor components include carbon monoxide, nitrogen monoxide/nitrous oxide, hydrocarbons, particulates (particulate matter). |
ASSESSMENT CRITERION 3 |
The types of air/fuel mixture and the effects of incorrect mixture are explained according to the contribution to air pollution. |
ASSESSMENT CRITERION RANGE |
Types of air/fuel mixtures include homogenous mixture, heterogeneous mixture, excess-air mixture, air deficiency mixture. |
SPECIFIC OUTCOME 7 |
Demonstrate knowledge of emission control. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Engine design characteristics for controlling emissions are described according to the manufacturer's workshop manual. |
ASSESSMENT CRITERION RANGE |
Air-fuel ratio, mixture formation, uniform air/fuel distribution, exhaust-gas recirculation (EGR), valve timing, compression ratios, combustion chamber design, ignition systems, crankcase ventilation. |
ASSESSMENT CRITERION 2 |
Exhaust gas treatment methods are explained in terms of controlling engine emissions. |
ASSESSMENT CRITERION RANGE |
Thermal afterburning, catalytic afterburning. |
ASSESSMENT CRITERION 3 |
The different types of vehicle emission control systems and the components are explained in terms of their operation. |
ASSESSMENT CRITERION RANGE |
Positive crankcase ventilation (PCV) system, evaporative emissions control system, exhaust-gas recirculation (EGR) system, air injection system, thermostatic air cleaner system, catalytic converter, computerised/electronic emissions control system. |
UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS |
UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE |
The following embedded knowledge is addressed in an integrated way in the unit standard:
|
UNIT STANDARD DEVELOPMENTAL OUTCOME |
N/A |
UNIT STANDARD LINKAGES |
N/A |
Critical Cross-field Outcomes (CCFO): |
UNIT STANDARD CCFO IDENTIFYING |
Identify and solve problems and make decisions using critical and creative thinking. |
UNIT STANDARD CCFO WORKING |
Work effectively with others as members of a team, group, organisation or community. |
UNIT STANDARD CCFO ORGANISING |
Organise and manage themselves and their activities responsibly and effectively. |
UNIT STANDARD CCFO COLLECTING |
Collect, analyse, organise and critically evaluate information. |
UNIT STANDARD CCFO COMMUNICATING |
Communicate effectively, using visual, mathematical and/or language skills in the modes of oral and/or written presentations. |
UNIT STANDARD CCFO SCIENCE |
Use science and technology effectively and critically showing responsibility towards the environment and health of others. |
UNIT STANDARD ASSESSOR CRITERIA |
N/A |
UNIT STANDARD NOTES |
This unit standard has been replaced by unit standard 260679, which is "Demonstrate knowledge of fuel supply and engine management systems", Level 3, 10 credits.
Terminology: Terms used in this unit standard are generic to the automotive engineering industry in South Africa. Notes to Assessors: Assessors should keep the following principles in mind when designing and conducting assessments against this unit standard: |
QUALIFICATIONS UTILISING THIS UNIT STANDARD: |
ID | QUALIFICATION TITLE | PRE-2009 NQF LEVEL | NQF LEVEL | STATUS | END DATE | PRIMARY OR DELEGATED QA FUNCTIONARY | |
Elective | 58497 | National Certificate: Automotive Repair and Maintenance | Level 3 | NQF Level 03 | Passed the End Date - Status was "Registered" |
2009-02-18 | Was MERSETA until Last Date for Achievement |
PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: |
This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here. |
NONE |
All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. |