ASM Diesel Engine

Real-Time-Capable Simulation Models for Diesel Engines

ASM Diesel Engine is a mean value engine model with torque modulation.

ASM Diesel Engine is a mean value model that simulates the behavior of a diesel engine via crank-angle-based torque modulation. It considers the temperature and dynamic manifold pressure and has several fuel injection models. A soft ECU is included for scenarios where a real ECU is not available, for example, in offline simulation. To simulate the engine in an automotive system (car or truck), the engine model incorporates a longitudinal drivetrain model with manual and automatic transmission, a clutch, a torque converter, a starter, and a test bench mode. Models for the environment and driver complement the virtual powertrain.

Features at a Glance

  • Simulation of diesel applications with up to 20 cylinders
  • Up to 8 direct injections and 4 port injections per cylinder per cycle
  • Map-based turbocharger for boost pressure calculation
  • Diesel injection systems: Common rail injector, unit injector, unit pump and tank model
  • Diesel exhaust system including diesel oxidation catalyst (DOC) and diesel particulate filter (DPF)
  • High pressure and low pressure exhaust-gas recirculation (EGR) of exhaust and unburned air with EGR cooler
  • Driver (longitudinal) for standard cycles (WLTC, FTP75, NEDC, J10-15, etc.)
  • Easy to expand into a comprehensive virtual vehicle by adding ASM Vehicle Dynamics
  • Simulation with real ECU in hardware-in-the-loop (HIL) systems and simulated soft ECU in model-in-the-loop (MIL) simulation
  • Start/stop system support

  • Air system
  • Fuel system
  • Piston engine
  • Exhaust gas aftertreatment
  • Turbocharger
  • Drivetrain (basic)
  • Vehicle dynamics (longitudinal)
  • Environment (basic)

Feature Gasoline Basic Gasoline Diesel InCylinder Gasoline InCylinder Diesel
No. of cylinders Unlimited 20 20 12 12
EGR Yes Yes Yes Yes
Map-based turbocharger Yes Yes Yes Yes Yes
Physical turbocharger Yes Yes Yes Yes
Common rail system Yes Yes Yes Yes
Pump nozzle Yes
Fuel injection Intake manifold Direct, intake manifold Direct Direct, intake manifold Direct
Wall film evaporation Yes Yes
Combustion modes Homogeneous Homogeneous, stratified Diffusion Homogeneous Diffusion
Exhaust system Basic variant Basic variant DPF, DOC1) Basic variant DPF, DOC1)
Soft ECU, engine Yes Yes 2) Yes 2) Yes 2) Yes 2)
Combustion simulation Mean value Mean value Mean value Physical Physical
Valve simulation Mean value Mean value Mean value Physical Physical
1) DPF: diesel particulate filter, DOC: diesel oxidation catalyst
2) Torque-based

  • ASM Combustion Engine Product Information, PDF, English, 6226 KB
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