Search for dissertations about: "fuel penalty"
Showing result 1 - 5 of 28 swedish dissertations containing the words fuel penalty.
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1. Studies of a Heavy-Duty Diesel Aftertreatment System Based on the NOX Storage and Reduction Technology
Abstract : The legislative limits for NOX emissions in the exhaust gas from heavy-duty diesel engines will be decreased in the European Union from today 3.5 g/kWh (Euro IV) to 2.0 g/kWh in 2008 (Euro V). In the USA and Japan a similar trend can be seen. READ MORE
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2. Manganese Materials in Solid Fuel Chemical Looping Combustion
Abstract : Against the background of rising anthropogenic greenhouse gas emissions, carbon capture andstorage (CCS) has been proposed as a means of mitigating climate change by storing CO2 capturedfrom large point sources in underground geological formations such as aquifers or depleted oilandgas fields. While first generation CCS technologies rely on active gas separation with anassociated energy penalty, chemical looping combustion (CLC) can avoid that step by utilizingsolid metal oxide particles to transfer oxygen from combustion air to fuel, making CO2 captureinherent to the process. READ MORE
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3. Injection and Combustion of Alternative Fuels in Spark Ignited Direct Injection Engines
Abstract : Increasingly stringent vehicle emission legislation necessitates increasingly efficient combustion engines. The use of direct injection in spark ignited engines improves engine efficiency and reduces CO2 emissions. READ MORE
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4. Cost/Weight Optimization of Aircraft Structures
Abstract : Composite structures can lower the weight of an airliner significantly. The increased production cost, however, requires the application of cost-effective design strategies. Hence, a comparative value is required which is used for the evaluation of a design solution in terms of cost and weight. READ MORE
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5. Selection of oxygen carriers for chemical-looping combustion using methane as a fuel
Abstract : In order to meet new demands on clean energy producing technologies, chemical-looping combustion could play an important role. With this technique, CO2 from the flue gases can be separated and collected without excessive energy and efficiency penalty. This is because nitrogen from the combustion air is never mixed with the fuel. READ MORE