SAQA 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 diesel fuel injection and engine management systems 
SAQA US ID UNIT STANDARD TITLE
244044  Demonstrate knowledge of diesel 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  7 
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 diesel fuel injection systems.

People credited with this unit standard are able to:
  • Demonstrate knowledge of the principles and operation of a diesel fuel system.
  • Demonstrate knowledge of low-pressure diesel fuel system components.
  • Demonstrate knowledge of high-pressure diesel fuel injection systems.
  • Demonstrate knowledge of and identify the components of electronic diesel control (EDC) systems.
  • Demonstrate knowledge of air pollution and vehicle exhaust emissions.
  • Demonstrate knowledge of emission control for diesel engines. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication and Mathematical Literacy at NQF Level 2.
  • The ability to use automotive engineering tools and equipment.
  • The ability to work safely in an automotive workshop. 
    		•

    UNIT STANDARD RANGE 
    The following scope and context applies to the whole unit standard:
  • Reference to suitable tools means industry approved tools that are recognised within the industry as being the most suited to complete the task to a professional and competent manner with due regard to safe working practices.
  • Work is carried out in a fully equipped automotive workshop.

    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 the principles and operation of a diesel fuel system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The properties of diesel fuel are explained in terms of fuel contents and their effect on the engine. 
    ASSESSMENT CRITERION RANGE 
    Cetane rating, fuel viscosity, sulphur content, cold behaviour, filterability, carbon (hydrocarbons), flash points, boiling range, density, lubricity, additives.
     

    ASSESSMENT CRITERION 2 
    The diesel engine performance is explained in terms of its advantages and disadvantages. 

    ASSESSMENT CRITERION 3 
    The diesel combustion process is explained in terms of the combustion cycle and phases. 

    ASSESSMENT CRITERION 4 
    Diesel combustion chambers and the method of injection are described. 
    ASSESSMENT CRITERION RANGE 
    Direct or indirect.
     

    ASSESSMENT CRITERION 5 
    Relevant safety requirements in working with diesel fuel are identified in terms of health and safety legislation. 

    SPECIFIC OUTCOME 2 
    Demonstrate knowledge of low-pressure diesel fuel system components. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The low-pressure diesel fuel system components are identified and their function explained in terms of engine operation. 
    ASSESSMENT CRITERION RANGE 
    Fuel tank, fuel lines, fuel filters, and mechanical or electric fuel delivery pump with pressure relief valve.
     

    ASSESSMENT CRITERION 2 
    Fuel system components are identified in terms of their location on the vehicle and the fuel flow path. 

    ASSESSMENT CRITERION 3 
    Safe handling requirements of components are identified in terms of potential damage. 

    SPECIFIC OUTCOME 3 
    Demonstrate knowledge of high-pressure diesel fuel injection systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The different types of fuel injection systems are described in terms of physical features. 
    ASSESSMENT CRITERION RANGE 
    In-line fuel injection pump, rotary/distributor injection pump, UIS (unit injector system), UPS (unit pump system), common rail system.
     

    ASSESSMENT CRITERION 2 
    Fuel system components are identified in terms of their location on the vehicle and the fuel flow path. 

    ASSESSMENT CRITERION 3 
    The diesel fuel system components are identified and their function explained in terms of engine operation. 

    ASSESSMENT CRITERION 4 
    The use of governors in diesel engines is explained in terms of controlling engine performance and engine safety. 

    SPECIFIC OUTCOME 4 
    Demonstrate knowledge of and identify the components of electronic diesel control (EDC) systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The purpose and function of electronic diesel control (EDC) is explained in terms of its integration with other vehicle electronic systems. 

    ASSESSMENT CRITERION 2 
    The purpose and function of EDC sensors and desired-value generators are described according to manufacturer's specifications. 

    ASSESSMENT CRITERION 3 
    The function of the electronic control unit (ECU) is described in terms of data processing and engine performance. 

    ASSESSMENT CRITERION 4 
    The purpose and function of the engine management system is explained in terms of engine performance and exhaust emissions. 

    ASSESSMENT CRITERION 5 
    Computerised electronic engine control for in-line fuel injection pumps is explained according to the manufacturer's workshop manual. 
    ASSESSMENT CRITERION RANGE 
    Rack travel sensor, port closing sensor, and electronic governor.
     

    ASSESSMENT CRITERION 6 
    Computerised electronic controls for distributor-type fuel injection pumps are explained according to the manufacturer's workshop manual. 
    ASSESSMENT CRITERION RANGE 
    Electronic governor, electronically controlled timing device, solenoid controlled distributor pumps, engine warm-up protection, accelerator interlock.
     

    ASSESSMENT CRITERION 7 
    The functions of time controlled single cylinder pump systems are explained according to the manufacturer's workshop manual. 
    ASSESSMENT CRITERION RANGE 
    Unit injector system and unit pump system.
     

    SPECIFIC OUTCOME 5 
    Demonstrate knowledge of air pollution and vehicle exhaust emissions. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Air pollution is described in terms of its 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 gases are described in terms of their properties. 
    ASSESSMENT CRITERION RANGE 
    Major components include water, carbon dioxide and 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 6 
    Demonstrate knowledge of emission control for diesel engines. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Engine design characteristics for controlling emissions of diesel engines are described according to the manufacturer's workshop manual. 
    ASSESSMENT CRITERION RANGE 
    Combustion chamber design, fuel injection, intake-air temperature, exhaust gas recirculation (EGR).
     

    ASSESSMENT CRITERION 2 
    Exhaust gas treatment methods of controlling diesel engine emissions are explained according to the manufacturer's specifications. 

    ASSESSMENT CRITERION 3 
    Methods of testing vehicle emissions are explained in terms of the allowable limits. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or by an ETQA that has a Memorandum of Understanding with the relevant ETQA, according to the ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described in the Unit Standard.
  • Anyone wishing to be assessed against this unit standard may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following embedded knowledge is addressed in an integrated way in the unit standard:
  • Workplace procedures.
  • Safe working practices.
  • The use and application of tools and equipment.
  • How to locate manufacturer specifications in a workshop manual.
  • The principles and operation of the diesel fuel system.
  • Types and components of diesel fuel injection systems.
  • Functions of fuel injection systems.
  • Characteristics of diesel fuel.
  • Methods of controlling emissions.
  • Types and causes of air pollution. 
    		•

    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:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each specific outcome, or groups of specific outcomes.
  • Make sure evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the assessment criteria.
  • The assessment criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be assessment criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, direct, authentic, sufficient, systematic, open and consistent. 
    		•

    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.