Upon completing this Certified Diesel Engine Mechanic Course successfully, participants will be able to:
• Recognise the role of a diesel repair technician and the many career opportunities available
• Identify common tools and safety procedures utilised in the repair of heavy-duty vehicles
• List the basic functions of a diesel engine and its major mechanisms
• Define the operation of the cooling and lubrication systems of a normal diesel engine
• Identify the procedures followed in the inspection and renewal of a typical diesel engine
• Rationalise the job of a mechanical fuel injection system, the fuel-delivery system, and the features of various diesel fuels
• Learn the basics of electrical and electronic engine control systems
• Study the basic operation and repair of heavy-duty truck steering and suspension systems, along with service and repair of vehicle wheels and tires
• Identify the function and operation of heating, ventilation, and air conditioning systems used on heavy-duty trucks
• Classify the safety protocols and maintenance measures for trucks and trailers
Course Content:
INTRODUCTION TO HEAVY-DUTY DIESEL (HDD) ENGINES
• HDD engines:
o Rating
o Load factor
o Operation duration
• HDD engine glossary of terms
• International standards for HDD engine
• Internal and external characteristic performance curves
• Design considerations of HDD engine
• HDD engine construction features and materials
• HDD engine applications
WORK CYCLE AND COMBUSTION IN HDD ENGINES
• Work cycle and the characteristic curves of HDD engines
• Diesel fuel
• The combustion process in Diesel engines
• Compression ratio
• Combustion chambers shapes
• Direct & indirect injection methods
• Homogenous Charge Compression Ignition (HCCI)
• Air charging in heavy-duty diesel engines
• Turbocharger configuration
• Turbocharger control
• Turbocharger performance characteristics
FUEL INJECTION SYSTEMS IN HDD ENGINES
• Types and principles of operating fuel injection systems:
o Cummins systems
o Caterpillar systems
o In-line or multi-plunger systems
o Common rail systems
• HDD engines fuel injection systems
• Methods to control injected fuel quantity and timing
• Diesel fuel filtration and water separation
ELECTRONIC DIESEL CONTROL (EDC)
• Advantages of EDC
• EDC basic layout and components:
o ECU
o Sensors
o Actuators
o Layout for various types of fuel injection systems
• Open loops, Closed loops & data processing
• Controlled quantities
o Start
o Drive mode
o Idle speed
o Maximum speed
o Intermediate speeds
o Cruise speed
• Injected fuel quantity limits
EMISSION CONTROL SYSTEMS
• Diesel Oxidation Catalyst (DOC)
• Diesel Particulate Filter (DPF)
• Selective Catalyst Reduction (SCR)
• Urea Injection (UI)
• Exhaust gas recirculation (EGR)
• Closed Crankcase Ventilation (CCV)
OPERATION TIPS FOR HDD ENGINE
• Indicator lamps
• On-Board diagnostics
• Fuel type
• Items to be noticed
• Tips for efficient operation
MAINTENANCE OF DIESEL ENGINES
• Basics of mechanical maintenance
• Servicing of diesel fuel injection systems
• Diesel engine tune-up
• Diesel engine routine maintenance operations
TROUBLESHOOTING DIESEL ENGINES
• Forms of diesel engine components failure
• Engines troubleshooting and fault rectification
• Testing injection pumps, injectors, fuel feed pumps
• Testing engine condition
Methodology
The training methodology integrates lectures, interactive discussions, collaborative group exercises, and illustrative examples. Participants will acquire a blend of theoretical insights and hands-on practical experience, emphasizing the application of learned techniques. This approach ensures that attendees return to their professional environments equipped with both the competence and self-assurance to effectively implement the acquired skills in their responsibilities.
DATE:
1ST BATCH: 21st – 24th Jan, 2025
2ND BATCH: 24th – 27th June, 2025
25, Queen street, Alagomeji Bus Stop, Yaba, Lagos