Turbocharging Simulation

AVL BOOST, AVL EXCITE and AVL FIRE enable advanced compressor and turbine component design and turbocharger matching as part of an overall engine system. This integrated approach accommodates the complex interaction between the system components in order to create the most effective, low emission engines possible. 

Multilevel Simulation Depth

The basic thermodynamic matching of the turbocharger is performed for steady-state operation and continued by the optimization of the transient response. The matching calculation is iterative, based on compressor and turbine maps, as well as the most important engine data. Engines equipped with the charging system can be integrated into the vehicle simulation tool AVL CRUISE, in order to consider the overall system of the engine and vehicle within a driving cycle.

Pressure Wave Supercharger

In contrast to standard pressure charging devices, the pressure wave supercharger process is a direct gas-dynamic transfer of exhaust gas energy to the fresh charge in the channels of the rotor via traveling shock and expansion waves. The underlying physics allow highly predictive 1D modeling where the performance is a simulation result and no maps for mass-flow or efficiency characteristics are necessary.

Reducing CO2 Emissions

AVL BOOST and AVL FIRE offer an advanced pressure charging simulation system. Users benefit from the ability to:

  • Select a turbocharger to match a given engine
  • Design new turbochargers with engine matching at every design stage
  • Readily change compressor and turbine sizes and predict the effect
  • Rapidly improve the turbocharging system, and determine the impact of wastegates, variable geometry, exhaust gas recirculation and component losses

Rotor Dynamics and Bearing Analysis of Turbocharging Systems

AVL EXCITE allows for an optimal investigation of the dynamic stability of the rotor bearing system. Features include:

  • Multi-body dynamic solution including non-linear models
  • Different levels of detail
  • Detection of critical speeds
  • Analysis of the influence of full or semi floating bushing configurations
  • Detection of optimal matching of design parameters

Increasing Engine Performance while Reducing Emissions

CO2 reduction and energy efficiency are the main technology drivers for pressure-charged engines. Turbocharging allows auto manufacturers to reduce their engine sizes and emissions while continuing to deliver the power and performance customers demand.