Diploma in SCR Systems and NOx Reduction
Online postgraduate diploma of 800 hours in SCR systems and NOx reduction. 8 modules covering NOx formation, catalytic reduction chemistry, urea dosing, SCR modelling, control and calibration, diagnostics and inducement, and advanced technologies, with an assigned technical tutor.
Diploma in SCR Systems and NOx Reduction — studying from Australia
Off-road and special-purpose vehicles are central to Australia's mining, agriculture, construction and emergency services sectors. Remote geography and harsh conditions create strong demand for robust machinery, including haul trucks, agricultural equipment and specialist fire and rescue vehicles. Engineers work on hydraulics, drivetrains, operator safety and machine automation. Employers include mining equipment manufacturers and dealers, agricultural machinery firms, construction companies and government fleet agencies.
Fees for Australia: A$1,420 (AUD), with instalments and employer sponsorship available.
Relevant bodies in Australia
Typical roles
Questions from Australia
Will this qualification be recognised by Australian engineering bodies for off-road vehicle work?
SEIUM qualifications are private and not accredited by Engineers Australia or any national body. Recognition is decided by employers or the relevant professional body assessing your application. Engineers Australia assesses competence independently, so check its requirements before enrolling if membership is your goal.
Which Australian employers work with off-road and special vehicles and machinery?
Mining and agricultural equipment makers, fleet operators, defence and emergency service vehicle suppliers, and four-wheel-drive modification businesses are examples. Their hiring decisions depend on their own criteria. Relevant experience and a practical final project are often as important as the qualification.
Can I study this online while working in Australia, and is there support?
Yes, the programmes are 100% online and taught in English, and each student has an assigned technical tutor. You can study from anywhere in Australia without a student visa. Fees are payable in instalments, and employer sponsorship is possible; check the total hours and plan a realistic schedule.
Take the controls.
Run a real engineering trade-off from this field. Move the sliders, watch the model react in real time and beat the challenge.
What you will be able to do
Understand NOx formation and its in-engine control.
Master the chemistry of selective catalytic reduction.
Design reliable urea dosing systems.
Model SCR systems for design and control.
Calibrate dosing control strategies.
Apply diagnostics and inducement in line with the regulations.
Evaluate advanced NOx reduction technologies.
Who it's for
- Aftertreatment engineers moving into SCR design and calibration.
- Emissions calibration engineers working on heavy-duty and off-road engines.
- Catalyst modelling engineers.
- Engine diagnostic technicians.
- Homologation engineers dealing with Euro VI, Stage V and Euro 7.
- Catalyst chemistry specialists.
- Engineering or science graduates seeking to join engine manufacturers.
What you'll work with
- ISO 22241 (AUS 32 diesel exhaust fluid quality and handling)
- Regulation (EU) 2016/1628 (emission limits for non-road mobile machinery engines)
- UNECE Regulation R49 (emissions from heavy-duty compression-ignition engines)
- Delegated Regulation (EU) 2017/654 (technical requirements for non-road engine type-approval)
- Regulation (EC) 595/2009 (Euro VI) (type-approval of heavy-duty vehicles for emissions)
- ISO 8178-1 (measurement of exhaust emissions from reciprocating engines)
- SAE J1939 (vehicle network communication and diagnostics)
- GT-SUITE
- AVL CRUISE M
- MATLAB/Simulink
- ETAS INCA
8 modules
1.1Thermal, prompt and fuel mechanisms1.2Influence of temperature and oxygen1.3In-engine measures: EGR and injection timing1.4The NOx–particulates–fuel consumption trade-off1.5Euro VI and Stage V limits1.6WHTC and NRTC cycles1.7Real driving emissions1.8Environmental and health effects1.9Overview of reduction technologies1.10Workshop: NOx balance of a heavy-duty engine
2.1Standard, fast and slow SCR reactions2.2Role of NO2 and the DOC2.3Vanadium catalysts2.4Copper and iron zeolites2.5Ammonia storage2.6Ammonia oxidation and slip2.7ASC catalysts2.8Poisoning and ageing2.9Operating temperature window2.10Practical: conversion versus temperature curve
3.1AUS 32 solution to ISO 222413.2Urea decomposition and thermolysis3.3Urea deposits in the exhaust3.4Dosing injectors and pumps3.5Mixers and uniformity3.6Cold-start system heating3.7Urea quality and contamination3.8Level and quality sensors3.9System maintenance3.10Case study: diagnosing urea crystallisation
4.1Kinetic catalyst models4.2One-dimensional models in GT-SUITE4.3CFD of mixing and deposits4.4Control-oriented models4.5Calibration of kinetic parameters4.6Validation with reactor tests4.7Influence of ageing4.8Sensitivity to uniformity4.9Digital twin of the aftertreatment system4.10Lab: SCR model in GT-SUITE
5.1Open-loop dosing control5.2Closed-loop control with NOx sensor5.3Estimation of stored ammonia5.4NOx sensor cross-sensitivity5.5Rapid heat-up strategies5.6Thermal management at low load5.7Calibration in ETAS INCA5.8Transient calibration5.9Robustness against ageing5.10Practical: dosing tuning on a transient cycle
6.1SCR efficiency diagnostics6.2NOx control measures (NCD)6.3Operator inducement systems6.4Tampering detection6.5Illegal AdBlue emulators6.6Fault codes and SAE J19396.7Workshop diagnostics6.8Roadworthiness inspection and checks6.9Legal responsibilities6.10Case study: analysis of an inducement fault
7.1Dual SCR and close-coupled SCR7.2SCR on filter (SDPF)7.3Passive NOx adsorbers7.4Electric exhaust heaters7.5Euro 7 requirements7.6Alternative fuels and NOx7.7Hydrogen engines and SCR7.8On-board emissions monitoring7.9Future trends7.10Workshop: assessment of architectures for Euro 7
8.1Definition of the engine and application8.2Emissions targets8.3Catalyst selection8.4Dosing system design8.5System modelling8.6Control strategy8.7Test plan8.8Conclusions8.9Report and presentation8.10Final project: final review with the tutor
How you'll learn
100% online training on the SEIUM campus, with downloadable material, recorded classes and an assigned technical tutor. No fixed timetables: you progress at your own pace within each intake, so the programme fits around your job.
Each module combines theory, guided reading of the original standard and applied exercises. The working software is GT-SUITE, AVL CRUISE M, MATLAB/Simulink and ETAS INCA, in free, academic or evaluation versions. Testing is studied through real procedures for bench calibration of urea dosing, deposit diagnosis in SCR systems and catalyst modelling for control. Assessment is continuous by module, plus the final project.
Standards covered: ISO 22241, Regulation (EU) 2016/1628, UNECE Regulation R49, Delegated Regulation (EU) 2017/654, Regulation (EC) 595/2009 (Euro VI), ISO 8178-1, SAE J1939.
Build it end to end
Your final project follows the real engineering workflow, step by step, reviewed by your tutor.
Where this takes you
Requirements
- Prior technical training or professional experience in the sector. No university degree is required.
- An internet connection and a computer capable of running the programme software.
- English sufficient to read technical standards.
Ready to start?
Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.
Frequently asked questions
The programme totals 800 hours over 6–8 months. You set your own pace within each intake, and your tutor helps you plan the workload around your job.
You work with GT-SUITE, AVL CRUISE M, MATLAB/Simulink and ETAS INCA, using free, academic or evaluation versions. Your tutor indicates the free alternative wherever one exists.
A SEIUM Institute diploma, awarded on passing the continuous assessment and the final project. It is SEIUM's own qualification, not an official state degree; its recognition depends on the programme completed and the regulations of each country.
Yes. Modules passed are recognised in a higher programme in the same area (postgraduate diploma or master's). Ask about the recognition policy when you enrol.
Prior technical training or professional experience in the sector (no university degree required), a computer able to run the software and English sufficient to read technical standards.
Start dates are set by SEIUM's faculty for each intake. Our admissions team will confirm the next available date when you apply.
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