Diesel Fuels in Technological Transition to the Post-Fossil Age

Authors

Dr. E. Jacob, Emissionskonzepte Motoren, Krailling

Year

2012

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 735

Summary

Improved diesel fuels and engine oils in combination with DPF SCR-exhaust systems facilitate further potential on the long-term stability of limited emissions and on reducing fuel consumption when looking at lowest-emission diesel engines. The mineral oil industry has made great advances in improving the quality of fuels; especially with the introduction of sulfur-free fuels in 2001, significant progress was made. At the same time, political decision-makers have counteracted this positive trend by imposing the obligation to add low-quality bio-components to fuels on the pretext that these would lower CO2-emissions. The addition of biodiesel (FAME) in particular, lowers the quality of diesel. The main reasons for this quality degradation are the low volatility and the adverse decomposition characteristics of FAME. If vegetable oils are hydrogenated to form HVOs (hydrotreated vegetable oils), a high-grade alkane mixture, these disadvantages can be overcome.

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