Over the years, various calculation tools have become established at the chair.
In the area of 0D/1D flow simulation, GT-Power from Gamma Technologies offers us the possibility to work on a wide variety of applications and problems. These include, among others:
- Simulation of the charge air exchange
- Optimisation of valve timing
- Pressure curve analyses and loss distribution
In combination with other tools, much more complex tasks can also be realised. Such as:
- turbulence-based, predictive combustion models (CFD coupling)
- Driving cycle simulation (incl. warm-up), e.g. NEDC, RDE
AVL Fire and Ansys CFX offer us the possibility to calculate more complex flows numerically and to evaluate them both graphically and numerically. This is used, among other things, for:
- Calculation and optimisation of the water jacket
- Inlet port optimisation (e.g. flow characteristics)
- Intake air flow/manifold optimisation (equal distribution EGR/CNG)
- In-cylinder flow and mixture homogenisation
- Turbulence and residual gas distribution
- Optimisation of piston design
- Combustion optimisation incl. reaction kinetics
The chair has a long history in the field of multi-body simulation and valve train design. The tools used are Matlab, GT-Valvetrain and RecurDyn.
- Design software for mech. fully variable valve trains (basis Matlab)
- coupled validation models GT-Valvetrain/RecurDyn
- FEM/MKS coupling (RecurDyn)
The continuously increasing requirements due to the legally regulated emission limits present developers with ever new challenges.
With the Real Driving Emissions (RDE), a method has been introduced that is mandatory for all diesel passenger cars to be newly registered, which prescribes an emission measurement in real road operation. In order to meet these requirements, an RDE-compliant cycle was developed around Kaiserslautern and tested both simulatively and experimentally.
