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Module 3: Diesel Engines

3 days MOT/MOT3-E
  • Engineers and technical staff of engine design, development or tuning departments, Diesel engines. For improved comprehension, applicants are advised to initially follow the Module 1.
  • To improve the technical knowledge of Diesel engines for cars and industrial vehicles.
Learning Objectives
  • To know how direct injection Diesel engines work: ignition physics, design and adjustment parameters optimization.
  • To know high pressure injection systems operation and evolution.
  • To understand how Diesel fuel characteristics affect the engine behavior.
  • To be able to select a depollution strategy and an after-treatment system.
  • To be able to match a turbocharger to an engine.
  • Module 1 "MOT/MOT1-E" training.
Ways and means
  • Lecturers are industry experts, delivering real life examples.
The Diesel Engineers course (page 32) may replace module 3 for participants who wish to have a 5-day enhanced version.

Combustion system optimization 1 day
  • Pollutants formation mechanisms
  • Formation conditions of particles, nitrogen oxides, unburnt hydrocarbons, carbon monoxide. Representation in a temperature-air/fuel ratio diagram. Influence of injection pressure, swirl, injection advance parameters.
  • Fuel jet gas and liquid parts behaviors.
  • Combustion system optimization
  • Streamline inlet: swirl roles and measurement; trade-off with cylinder head tightness.
  • Drawing of the cavity (bowl) machined in the piston head.
  • Injection system required qualities.
  • Combustion noise. Advantage of multiple injections.
  • Exhaust gas recirculation (EGR)
  • How it reduces nitrogen oxide rate. Interest of EGR cooling.
  • High and low pressure EGR.
  • Start and cold start
  • Combustion deterioration factors causing fumes and noise.
  • Structure and control strategy of glow plugs used on car engines.
Supercharging 0.5 day
  • Turbocharger operating and technology.
  • Turbocharger adaptation process on an engine: determining the flow and the density in the intake manifold, choosing the supercharger, calculating the flow and the turbine expansion ratio, choosing the turbine.
  • Fixed or variable geometry turbocharger (FGT or VGT), supercharging by two sequential turbochargers.
Compression ignition engine fuel characteristics 0.5 day
  • Diesel fuel main characteristics and specifications (density, cetane rating, viscosity, lubricating capacity, volatility, sulfur, ...) and impact on the engine behavior, additive properties.
  • Impact of the fuel composition on the regulated and non regulated pollutant emissions.
  • Biofuels: vegetable oil esters.
Injection system technology and monitoring 0.5 day
  • Common-rail injection system: system description; systems evolution.
  • High pressure pump; high and low rail pressure control.
  • Fuel injector operating; flow in the injector nozzle, hydraulic flow.
  • Rail technology; flow balance.
Exhaust gas after-treatment 0.5 day
  • Regulations evolution, depollution strategies.
  • Oxidation catalysis: efficiency, initiation temperature, sulfur effect, positioning in the exhaust line.
  • Nitrogen oxides after-treatment: NOx traps, selective reduction catalyst (SCR).
  • Diesel particles after-treatment: Diesel particle filter (DPF); DPF regeneration with additives in the fuel or by filter catalytic coating; associated engine monitoring strategy.
2016 course calendar
Language Dates Location Tuition Register
Jun 06 - 08 Rueil €1,630 Online By email
Nov 14 - 16 Rueil €1,630 Online