Engine test bed

In response to the complex demands on motor fuels in the transport sector, the DBFZ operates an engine test bed for research activities. The primary aim is to test novel renewables-based fuels in combustion engines.

Specifcally, the singlecylinder research engine is used to test thermodynamic implementation (such as power output and consumption), legally limited and unlimited pollutants, engine oil dilution and the application of exhaust gas cleaning systems with respect to the fuel. A variety of different measurement and analytical techniques are used. Exhaust emissions can be measured by FTIR spectrometer, smoke meter, PMD, FID, lambda meter and NDIR, among other methods. Further analytical facilities are available in conjunction with the in-house analytical lab. The combustion process is analysed by a high-pressure indication system with online visualisation. Moreover, a freely programmable automation system enables typical engine properties, such as speed, load, rail pressure, charge air pressure, engine oil temperature and coolant temperature to be freely confgured and continuously recorded. The modular design of the test bed also enables combustion engines to be modifed quickly and autonomously.

In order to more effectively assess the high demands on exhaust gas cleaning systems when using renewable fuels, the DBFZ has developed a laboratory-scale catalyst-ageing test bed which is particularly capable of testing the durability of exhaust gas cleaning components (e. g. diesel oxidation catalysts or SCR catalysts). The exhaust gas is produced by a burner rather than by a combustion engine. The test bed thus permits the analysis of a catalyst’s suitability in relation to various motor fuels during the development phase.

With a view to the steady progression of electromobility in Germany, technical potential can be analysed on a specially-built test bed for range-extender modules and an electric vehicle with integrated range-extender. Regeneratively-powered electric vehicles combined with regeneratively-powered range-extender modules can help to dispel prejudices against electromobility and at the same time open up opportunities for novel fuels which are only available in small quantities on a regional scale.



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