Engine Technology

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TM3 is a computer-based instructional module that has been designed to teach
the fundamentals of the following topics:

Friction and Bearings
Servicing
Mechanical Engine Components
Engine Lubrication Systems
Contact Breaker Ignition Systems
Electronic Ignition Systems
Cooling Systems
Carburettors
Petrol Fuel Injection Systems
Diesel Fuel Systems
Air and Exhaust
Combustion

Each topic is divided into a series of on-screen, theory-based interactive
assignments that incorporate continuous assessment through questions. When used in conjunction with a ClassAct networked management system, this provides instant feedback of student performance.

Curriculum material topics include:

Friction and Bearings

• Forms of lubrication friction
• Grading/types of lubrication
• Applications of lubrications
• Oil sealing devices and gaskets
• Factors affecting friction between surfaces in contact
• Plain, ball and roller bearings

Servicing

• Contracts
• Starting the job
• Inside, outside and under vehicle tasks (full height and half height)
• Underhood tasks
• Road testing
• Renewal of CB points
• Static and dynamic timing
• Valve clearances
• Drive belt replacement and adjustment

Mechanical Engine Components

• SI and CI four-stroke cycles
• SI two-stroke cycle
• Valve and ignition timing
• Cylinder arrangements
• Cylinder blocks, bores and liners
• Cylinder heads
• Crankshafts, flywheels and connecting rods
• Camshafts, camshaft drives and auxiliary drives
• Valve mechanisms
• Pistons, piston rings and gudgeon pins
• Balance shafts
• Engine capacity and compression ratios
• Power and torque
• Variable valve timing
• Multi-valve arrangements
• Repair/restoration of timing devices, crankshafts, cylinder bores, valve faces, seats and guides

Engine Lubrication Systems

• Reasons for lubrication system and crankcase ventilation
• Oil pressures and temperatures
• Wet and dry sump systems
• Oil pumps and drives
• Crescent oil pumps
• SAE oil specification

Contact Breaker Ignition Systems

• History
• Contact breaker systems
• Distributors, points, LT and HT circuits
• Mechanical and vacuum advance mechanisms
• Ignition coils
• Capacitors
• Ballast resistors
• Dwell angle
• HT leads
• Spark plug types and heat range
• Plug electrode erosion
• Central electrode polarity
• Limitations of CB systems

Electronic Ignition Systems

• Breakerless ignition systems (Hall Effect and Induction Pulse Generator)
• Programmed ignition: engine speed, position, temperature, detonation and load
• CDI systems (oscillators, transformers and rectifiers)
• Distributorless ignition systems
• Fault diagnosis of CB, Hall Effect, constant energy and programed ignition systems
• Engine management systems

Cooling Systems

• Location, function and identification of cooling system components
• Passenger heating - reasons, function and location
• Air cooling - reasons, function and identification
• System pressure testing
• Combustion leakage diagnosis
• Coolant strength and condition inspection
• A/C cycle and refrigerant
• A/C components: compressors, condensers, receiver-driers, thermostatic
  expansion valves and evaporators
• Sight glass and charging/reclaiming stations
• System connections and lubricants
• Radiator design

Carburettors 

Fuel, fuel tank fillers and breathers

Fuel pipes, filters and lift pumps

Basic carburation and venturi principles

Types of carburettor: fixed venturi, twin choke and constant depression

Carburettor adjustments

Petrol Fuel Injection Systems

• Fuel pumps, accumulators, filters and pressure regulators
• Warm up regulators
• Cold start valves and thermo time switches
• Fuel cut off switches
• Full load enrichment
• Idle speed stabilisation
• Single point and multi point injection systems
• Continuous injection (K-jetronic)
• Grouped and sequential injection
• Injector valves (continuous and timed injection)
• Throttle body
• Direct injection
• Petrol injection adjustments
• Cruise control systems

Diesel Fuel Systems

• Fuel tanks
• Fuel supply and delivery pipes
• Fuel lift pumps
• Filter systems
• In-line and rotary injection pumps
• CI injectors
• Delivery valves
• Mechanical, pneumatic, hydraulic and electronic governors
• Cold start devices: glow and flame plugs, cold start devices (excess fuel)
• Direct and indirect injection
• Diesel injector and pump adjustments
• Two stroke diesel
• Common rail systems and variations
• Unit pump-injector

Air and Exhaust

• Inlet and exhaust manifolds
• Air filters and induction air heating
• Exhaust materials, mountings and silencers
• Volumetric efficiency
• Turbo and super chargers
• Inter coolers
• Wastegates and dump valves
• Emission control devices: catalytic converters, lambda sensors, EGR valves, air intake control, engine management control, ignition timing, petrol fume
  containment and combustion chamber design

Combustion 

• Combustion requirements
• Combustion of petrol: flame travel, pre-ignition, detonation, octane and
  products
• Combustion of diesel: flame travel, knock and products
  

Competence-based reporting
Each on-screen assignment is designed around a list of performance objectives.
These include academic, technical, and occupational objectives.

The assignments are written in such a way as to enable a student to attain the
performance objectives, with the assessment questions linked to these in order to provide a measure of true competency.

The performance objectives are used by the ClassAct management system to generate a comprehensive portfolio of student competency reports.

Instructor Materials 

• An Instructor Guide, containing correct answers to all questions.

The items supplied with this instructional module include:

• TM3 On-Screen Multimedia Manual CD-ROM
• Stand Alone eContent Utilities CD-ROM
• TM3 Instructor’s Guide (paper copy)