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Content archived on 2024-05-24

Experimental techniques for the on-line analysis of diesel emissions


The overall objective of the proposed project is to identify how the composition and quantity of Diesel particulates (PM) and unburned hydrocarbons (HC) are affected by different bio-fuels under various operation modes and whether they can be improved by the incorporation of fuel reforming. One objective will be to assess the relative importance of the oxygenation locations (in-cylinder or in the exhaust line) of poly-aromatic hydrocarbons (PAH). Specialised chemical analytical methods will be applied to speculate the material adsorbed on the PM the HC composition, and unique on. board fuel reforming technology will be applied to improve emissions. The proposed programme consists of the following points: 1) Theoretical and experimental study of the chemical analysis methods. Scheduling of the engine operating conditions and of the fuels used. 2) Installation and adjustment of the on-board exhaust gas fuel reforming. 3) Comparison of particulates collection methods. 4) Installation and tuning of the different chemical analysis methods and their optimisation. 5) Experimental work and analysis of the results obtained. 6) Preparation of final report including the guidelines to improve engine design and fuel formulation. This project will provide training in new chemical analysis methods, and knowledge about the behaviour of some future alternative fuels, such as bio-fuels and reformed fuels. The project will both benefit from and enhance the existing skills of the applicant in the areas of engine gaseous emissions modelling and in the characterisation of Diesel particulates. Other personal goals of the applicant are to : i) Develop knowledge of on-board fuel reforming systems ii) Foster relationships between the home institution, the host institution and industries to further the development of emissions-reduction techniques iii) Develop knowledge of measurement techniques for the continuous analysis of the exhaust gas based on on-line mass spectrometry. These will be introduced at the home institution in Spain. iv) Develop a new research line focused on the study of the locations of the oxidation of Diesel exhaust gas within the engine system, which has important physiological implications.

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United Kingdom

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