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Diesel Engineers

5 days MOT/MDIES-E
  • Engineers and technical staff of engine design, development or tuning departments, looking for a better understanding of Diesel road engines as well as industrial engines. For improved comprehension, applicants are advised to initially follow the Module 1.
  • To update participant's knowledge in the field of Diesel operation, combustion, injection systems, after-treatment fuels and lubrication (car, heavy duty trucks, off-road).
Learning Objectives
  • To understand Diesel engine operation: combustion process, pollutants origin and reduction.
  • To understand the engine-turbocharger adaptation criteria.
  • To be able to size the turbocharger.
  • To know the associated products and their circuits: fuels and lubricants.
  • To be able to select the right after-treatment system.
  • Module 1 "MOT/MOT-1-E" training.
Ways and means
  • One of our best-sellers.
  • More heavy-duty vehicles oriented, comparing personal vehicle, trucks, off-road on real basis.

Diesel engines: combustion and operating 1 day
  • Diesel combustion mechanisms: pollutants formation (particles, HC, CO, NOx), fuel jet required characteristics, air mixture, streamline in the combustion chamber (swirl and squish), combustion system optimization with regards to the performances/depollution trade-off. Interest of multiple injections (pilot injection, split injection, post-injection) as for noise and depollution.
  • Combustion modes with improved air/fuel mixture: HPC (highly premixed combustion), HCCI (homogeneous charge compression ignition).
  • Exhaust gas recirculation (EGR): how it reduces nitrogen oxide rate, trade-off with low and high load particles emissions, EGR cooling, high and low pressure EGR.
  • Start and cold start: factors of smoke and noise when cold; start assistance with warp up at intake, glow and post-glow plug.
Combustion noise 0.25 day
  • Noise origin, measurements, cracking noise, burst noise.
  • Solutions to reduce noise.
Turbocharging 0.5 day
  • Interest and limits of turbocharging on Diesel engine: temperature before turbine, cylinder pressure, thermo-mechanical stresses in the cylinder head.
  • Technologies of the different parts: compressor, turbine, main bearings.
  • Adaptation of the turbocharger to a given engine: choosing the turbocharger, compressor map limits (pumping, overspeed, sonic cutoff), choosing the turbine, free-floating, wastegate or variable geometry control, twin-scroll turbine; dual turbocharging.
Diesel engine fuels 0.5 day
  • Diesel fuel main characteristics and specifications (density, cetane rating, viscosity, lubricating capacity, volatility, sulfur, ...), and impact on the engine behavior, additives properties.
  • Impact of the fuel composition on the regulated and non regulated pollutant emissions.
  • Specifications: Diesel fuel compared with domestic fuel and with Jet A1, new Diesel fuels, methylic ester of vegetable oils (EMVH).
Injection systems technologies 0.75 day
  • Description and operating of injection systems on cars and industrial heavy truck engines: low pressure circuits, pumps, ducts, injectors and nozzles.
  • Managing the fuel injection laws with Common-rail systems, solenoid injector or piezo, injector pump, unit pumps, hydraulic assisted pumps.
  • Design restrictions and precautions. Filtration. Evolutions.
Engine management system 0.5 day
  • General presentation of the engine management system: components (sensors, actuators...) and software functions (mapping and strategies).
  • Fuel management: rail pressure control and injected flow control.
  • Air loop: EGR and turbocharger management.
  • Software torque structure: drivers request, inter-systems operation, limits and thermo-mechanical protections.
  • Inspection and warranty of engine operating: components electric diagnostic, strategies functional diagnostic.
Diesel engines lubrication 0.5 day
  • SAE classification of viscosity and API and ACEA specifications of lubricants for Diesel engines.
  • Lubricant role and functional properties related to the lubrication critical points.
  • Chemical composition and composition requirements (premature ageing of after-treatment devices). Filtration.
Exhaust gas after-treatment 1 day
  • Situation, history and general issues, regulations and approval cycles.
  • Mechanisms of Diesel oxidation catalysis specific reactions: catalyst structure and operating principle (noble metals, performances criteria, functional definitions, efficiency, field, initiation, conversion rate, sulfur and particles oxidation).
  • Nitrogen oxides conversion: decomposition, selective reduction catalyst (SCR) hydrocarbons and ammonia, Diesel sequential.
  • Specific treatments: NOx traps, liquid/solid urea DeNOx, hydrocarbons SCR reduction.
  • Particles treatment: particles structure, Diesel particle filters - DPF- (silicium carbide, ceramics, metallic), DPF regeneration (with additives or catalysis), consequences (consumption, ∆P, cost, ...). Evolution towards 4-way catalysis (DPNR, others, ...). Limiting Diesel catalyst ageing. Diesel On Board Diagnostics (OBD).
2016 course calendar
Language Dates Location Tuition Register
Jun 13 - 17 Rueil €2,290 Online By email
Oct 17 - 21 Rueil €2,290 Online By email
Dec 05 - 09 Rueil €2,290 Online