U
Ulf Kirchner
Researcher at Ford Motor Company
Publications - 18
Citations - 1552
Ulf Kirchner is an academic researcher from Ford Motor Company. The author has contributed to research in topics: Soot & Particle. The author has an hindex of 15, co-authored 17 publications receiving 1404 citations. Previous affiliations of Ulf Kirchner include Ford-Werke GmbH.
Papers
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Journal ArticleDOI
Mass spectrometric analysis and aerodynamic properties of various types of combustion-related aerosol particles
Johannes Schneider,S. Weimer,Frank Drewnick,Stephan Borrmann,G. Helas,Patience Gwaze,Otmar Schmid,Meinrat O. Andreae,Ulf Kirchner +8 more
TL;DR: In this paper, various types of combustion-related particles in the size range between 100 and 850nm were analyzed with an aerosol mass spectrometer and a differential mobility analyzer, which yielded a fractal dimension (D f ) of 2.09 ± 0.06 for biomass burning particles from the combustion of dry beech sticks, but showed values around three, and hence more compact particle morphologies, for particles from combustion of more natural oak.
Journal ArticleDOI
Nucleation Particles in Diesel Exhaust: Composition Inferred from In Situ Mass Spectrometric Analysis
Johannes Schneider,N. Hock,S. Weimer,Stephan Borrmann,Ulf Kirchner,Rainer Vogt,Volker Scheer +6 more
TL;DR: Evidence is found that if nucleation occurs, sulfuric acid/water is the nucleating agent and that the production of nucleation particles even at high engine load can be suppressed by using low-sulfur fuel.
Journal ArticleDOI
Impact of driving style and road grade on gaseous exhaust emissions of passenger vehicles measured by a Portable Emission Measurement System (PEMS)
TL;DR: In this paper, the impact of different driving styles and route characteristics on on-road exhaust emissions on Euro-6c regulation including Real Driving Emissions (RDE) compliant test route is addressed.
Journal ArticleDOI
FTIR Spectroscopic Investigation of the Mechanism and Kinetics of the Heterogeneous Reactions of NO2 and HNO3 with Soot
TL;DR: In this article, Fourier transform infrared (FTIR) spectra of soot samples before and after exposure to HNO3, NO2, and O3 were analyzed as a function of exposure time.
Journal ArticleDOI
On-road and laboratory investigation of low-level PM emissions of a modern diesel particulate filter equipped diesel passenger car
TL;DR: In this article, low-level particulate matter (PM) emissions from a DPF equipped EURO-4 diesel vehicle were studied in the emission test laboratory as well as during real-world chasing on a high-speed test track.