Conducting a reliable powertrain simulation with RDE (Real Driving Emissions) often represents a special challenge. Firstly, due to the increase in calculation time because of the numerous driving profiles to be tested, and secondly due to the need for high-quality results – necessitating resolution of the gas path. The dilemma: increasing the simulation speed in the gas path has a negative effect on the quality of the results regarding the combustion process and raw emissions. But these play an important role in reliable evaluation of the RDE.

To solve this problem, we have developed RapidCylinder® as a plug-in for the GT-Power flow simulation. The fundamental idea: as previously, the gas path is modeled physically and can depict all the relevant effects. However, at the same time, the calculation time can be drastically reduced thanks to data-based modeling of the high-pressure component in RapidCylinder®. This enables extremely accurate and reliable results. RapidCylinder® offers you a rapid, flexible, precise and therefore powerful tool for evaluating RDE for powertrains.

The initial RDE evaluation for powertrain concepts should be conducted as early on in the development process as possible. This is particularly important for hybrid powertrains. However, at this point, stationary measurement data from the engine test bench is generally not available. In this case, you can combine RapidCylinder® with our UserCylinder®, which enables you to simulate the combustion process as well.

Especially for high-efficiency concepts, switching off the combustion engine may result in the exhaust aftertreatment system cooling down. The advantage of hybridization may then be significantly reduced due to the heating requirement for exhaust aftertreatment. This should be taken into consideration early on in the design phase.

In addition to the sale of licenses for our development tools and the associated product support, we also offer a range of services.

Since – to achieve reliable results – the assessment of different powertrain concepts in particular requires a great deal of experience right from the start, we are happy to provide you with support in conducting concept studies at any time.