Search for dissertations about: "lean NOx trap"
Showing result 6 - 9 of 9 swedish dissertations containing the words lean NOx trap.
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6. Aging of Lean NOX Trap Catalysts and Hydrocarbon Trapping in Cold-Start Applications
Abstract : It is well known that combustion processes worldwide give rise to emissions such as nitrogen oxides (NOX), carbon monoxide (CO), hydrocarbons (HC) and particulates. For vehicles, the method for handling these emissions has been through the development of the catalytic converter. READ MORE
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7. Deactivation mechanisms influencing the performance and durability of exhaust aftertreatment systems
Abstract : As countermeasure to air pollution and global warming, more stringent environmental policy measures will probably come into force with the future emission standards, which will require important developments for gasoline and diesel vehicles to meet the emerging criteria. Efficient catalytic formulations and advanced strategies for exhaust aftertreatment systems will be therefore demanded to provide both high catalytic activity and stability, minimizing the environmental impact by automobiles. READ MORE
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8. Investigation of La promoted Pd/BEA Performance for Passive NOx adsorption processes
Abstract : Lean-burn combustion engines have been used to improve fuel efficiency by reducing fuel consumption. However, these engines face challenges in lean reduction of NOx for exhaust after-treatment systems. READ MORE
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9. Supervisory control of complex propulsion subsystems
Abstract : Modern gasoline and diesel combustion engines are equipped with several subsystems with the goal to reduce fuel consumption and pollutant exhaust emissions. Subsystem synergies could be harnessed using the supervisory control approach. Look-ahead information can be used to potentially optimise power-train control for real time implementation. READ MORE