Sökning: "aftertreatment"
Visar resultat 16 - 20 av 47 avhandlingar innehållade ordet aftertreatment.
16. Experimental and kinetic studies of H2 effect on lean exhaust aftertreatment processes: HC-SCR and DOC
Sammanfattning : With a growing concern to lower greenhouse gas emissions from road transportation, lean burn and diesel engines will keep playing an important role in the future. Development of a highly efficient and durable process to reduce NOx to N2 becomes a challenging issue especially in the presence of ample O2 concentration as in lean burn exhaust. LÄS MER
17. Modeling and Control for Emission Management in Hybrid Electric Commercial Vehicles
Sammanfattning : Electrification of powertrains is a major trend in the vehicle industry. The reason behind this is mainly that electrification of a powertrain generally results in better fuel economy, by eliminating inefficient, low load, operation of the engine. LÄS MER
18. Effects of trace elements in biodiesel on the performance of diesel oxidation catalysts in heavy-duty vehicles
Sammanfattning : To reduce net greenhouse gas emissions, a shift towards adoption of biofuels is ongoing in the transport sector. Heavy-duty diesel vehicles are equipped with aftertreatment equipment, comprising of catalysts and filters, and how this equipment is affected by the use of biofuels is not yet fully understood. LÄS MER
19. Nonlinear system identification with applications to selective catalytic reduction systems
Sammanfattning : The stringent regulations on the emissions levels of heavy duty vehicles create a demand for new methods of reducing harmful emissions from the engine. In order to be able to follow these increasingly stricter legislations, complex aftertreatment systems are used. LÄS MER
20. Catalytic Reduction of NOx on Heavy-Duty Trucks
Sammanfattning : The objective of the work described in this thesis is to identify the principles and parts of an aftertreatment system for the catalytic NOx reduction for heavy-duty diesel vehicles, and to demonstrate such a system in full-scale. The reducing agent is diesel fuel. LÄS MER