TY - GEN A1 - Mauß, Fabian A1 - Blurock, Edward S. A1 - Tuner, Martin T1 - Phase Optimized Skeletal Mechanisms for Engine Simulations T2 - Combustion Theory and Modelling Y1 - 2010 SN - 1364-7830 VL - 14 IS - 3 SP - 295 EP - 313 ER - TY - CHAP A1 - Mauß, Fabian A1 - Tuner, Martin A1 - Fröjd, Karin A1 - Seidel, Lars T1 - "Diesel-PPC engine: Predictive Full Cycle Modeling with Reduced and Detailed Chemistry" Y1 - 2011 ER - TY - GEN A1 - Tuner, Martin A1 - Pasternak, Michal A1 - Mauß, Fabian A1 - Bensler, H. T1 - A PDF-Based Model for Full Cycle Simulation of Direct Injected Engines T2 - SAE Technical Papers N2 - In one-dimensional engine simulation programs the simulation of engine performance is mostly done by parameter fitting in order to match simulations with experimental data. The extensive fitting procedure is especially needed for emissions formation - CO, HC, NO, soot - simulations. An alternative to this approach is, to calculate the emissions based on detailed kinetic models. This however demands that the in-cylinder combustion-flow interaction can be modeled accurately, and that the CPU time needed for the model is still acceptable. PDF based stochastic reactor models offer one possible solution. They usually introduce only one (time dependent) parameter - the mixing time - to model the influence of flow on the chemistry. They offer the prediction of the heat release, together with all emission formation, if the optimum mixing time is given. Hence parameter fitting for a number of kinetic processes, that depend also on the in cylinder flow conditions is replaced by a single parameter fitting for the turbulent mixing time. In this work a PDF based model was implemented and coupled to the full cycle engine simulation tool, WAVE, and calculations were compared to engine experiments. Modeling results show good agreement with the experiments and show that PDF based Dl models can be used for fast and accurate simulation of Dl engine emissions and performance. Y1 - 2008 SN - 0096-5170 SN - 0148-7191 IS - 2008-01-1606 ER - TY - GEN A1 - Svensson, Erik A1 - Li, Changle A1 - Shamun, Sam A1 - Johansson, Bengt A1 - Tuner, Martin A1 - Perlman, Cathleen A1 - Lehtiniemi, Harry A1 - Mauß, Fabian T1 - Potential Levels of Soot, NOx , HC and CO for Methanol Combustion T2 - SAE Technical Papers N2 - Methanol is today considered a viable green fuel for combustion engines because of its low soot emissions and the possibility of it being produced in a CO2-neutral manner. Methanol as a fuel for combustion engines have attracted interest throughout history and much research was conducted during the oil crisis in the seventies. In the beginning of the eighties the oil prices began to decrease and interest in methanol declined. This paper presents the emission potential of methanol. T-Φ maps were constructed using a 0-D reactor with constant pressure, temperature and equivalence ratio to show the emission characteristics of methanol. These maps were compared with equivalent maps for diesel fuel. The maps were then complemented with engine simulations using a stochastic reactor model (SRM), which predicts end-gas emissions. The SRM was validated using experimental results from a truck engine running in Partially Premixed Combustion (PPC) mode at medium loads. The SRM was able to predict the combustion in terms of pressure trace and rate of heat release. The CO and NOx emissions were matched, however, the HC emissions were underestimated. Finally, the trajectories from the SRM simulations were superimposed on the T-Φ maps to investigate the in engine conditions. The T-Φ map analysis shows that emission of soot are non-existent, formaldehyde can be avoided and that emissions of methane are kept at, compared to diesel combustion, low levels, however CO and NOx levels are similar to diesel combustion. These results were confirmed for engine conditions by the SRM simulations and the engine experiments. KW - Potential Levels of Soot KW - Methanol Combustion Y1 - 2016 U6 - https://doi.org/10.4271/2016-01-0887 SN - 0148-7191 SN - 0096-5170 IS - 2016-01-0887 SP - 17 Seiten ER - TY - CHAP A1 - Mauß, Fabian A1 - Tuner, Martin T1 - "Modelling and Investigation of Exothermic Centers in HCCI Combustion" Y1 - 2009 ER - TY - CHAP A1 - Mauß, Fabian A1 - Tuner, Martin A1 - Karlsson, M. T1 - "Studying HCCI Combustion and its Cyclic Variations versus Heat Transfer, Mixing, and Discretization using a PDF based approach" Y1 - 2009 ER - TY - CHAP A1 - Amnéus, Per A1 - Tunér, Martin A1 - Mauß, Fabian A1 - Collin, Robert A1 - Nygren, Jenny A1 - Richter, Mattias A1 - Aldén, Marcus A1 - Kraft, Markus A1 - Bhave, Amit A1 - Hildingsson, Leif A1 - Johansson, Bengt T1 - "Formaldehyd and Hydroxyl Radicals in an HCCI Engine - Calculations and Measurements" Y1 - 2007 U6 - https://doi.org/10.4271/2007-01-0049 ER - TY - CHAP A1 - Mauß, Fabian A1 - Tuner, Martin A1 - Blurock, Edward S. T1 - "Phase Optimized Skeleton Mechanisms for Stochastic Reactor Models for Engine Simulation" Y1 - 2005 ER -