Mechanical Diesel and Emission, diagnostics training seminar (2 days) descriptor.
Injection types
The differences between direct and indirect injected systems. A look at advantages of electronic controlled systems vs indirect / direct mechanical injection.
Delta N (crank shaft speed fluctuations)
The effects of uneven running and the effect on the running gear on Direct and indirect injected Diesels.
Direct and Indirect injection.
The effects of nozzle aim on engine noise and wear, squish, pre-combustion chamber damage and flame shape and travel (Diesel knock).
Injector construction and maintenance
Filter unit electrics
VE type injector pump
In detail are covered: - lift pump, -bleed nozzle, -pressure relief valve, -High pressure delivery, -Radial motion and diagnostics, -axial motion and diagnostics, -Injection timing control and pump timing, -quantity control and governor, - maximum fuel amount adjustment, -Turbo pressure quantity and timing adaption, - inductive RPM sensors.
CAV DPA and DPC pump
In detail are covered: -comparison with VE type pump, -high pressure delivery, -fuel divider, -timing control, -quantity control.
Diesel emission testing
Legal testing, practical and theory (future WOF). Opacity test background and facts.
Diesel emission diagnostics
How to read the emission tester print outs and what does the information mean.
Determine what is wrong before pulling things apart (e.g. timing, injectors, combustion chamber, etc).
Glow system electronic diagnostics
System description. What is the result of bad connections and how do you locate them.
How can one bad or wrong (!) glow plug destroy the good ones.
Practical and theory.
The mechanical controlled Diesel diagnostic training is both hands on and theory. Many items are available for viewing. The equipment used are multi meters and a diagnostic opacity meter.
