Thesis (Ph.D) - University of Birmingham, School of Manufacturing and Mechanical Engineering, Faculty of Engineering.
|Statement||by Thomas Wagner.|
This work reports the investigation of a current exhaust gas recirculation (EGR) system to use the exhaust gas as an oxidizer for the fuel reforming process. Using lean-burn combustion exhaust gas, the catalytic fuel reforming process was investigated with a traditional liquid fuel reforming catalyst Cited by: 5. The thesis investigates how exhaust gas fuel reforming, also known as reformed exhaust gas recirculation (REGR), may benefit direct injection gasoline (GDI) engine efficiency and emissions. REGR is a thermochemical process that has potential for efficiently producing hydrogen-rich gas onboard a vehicle by using waste exhaust energy to promote endothermic reforming of hydrocarbon fuels. The application of exhaust gas assisted fuel reforming in diesel engines has been investigated. The process involves hydrogen generation by direct catalytic interaction of diesel fuel with engine. Exhaust gas fuel reforming is a combination of all the basic reforming processes, and involves hydrogen generation by direct catalytic interaction of the fuel with engine exhaust gases. It has been extensively investigated at the University of Birmingham in spark ignition engines and benefits in terms of combustion quality and emissions have been reported in the literature , .Cited by:
applications is the exhaust gas fuel reforming process. The process involves the catalytic reaction of engine exhaust gas (source of steam and oxygen at high temperature) with hydrocarbon fuel to produce hydrogen-rich gas (gas which mainly contains H 2, CO, CO 2 and un-reactive hydrocarbons). One approach to reduce both emissions simultaneously without fuel economy penalty is the reformed exhaust gas recirculation (REGR) technique, where part of the fuel is catalytically reacted with hot engine exhaust gas to produce a hydrogen-rich combustible gas that is then fed to the engine. 8 Exhaust Gas Emission Control Today and Tomorrow Sulphur content in fuel and particu-lates in exhaust gas The sulphur content in fuel oil has a strong impact on the particle level in the exhaust gas. IMO and the EU have introduced a restriction of sulphur of % in SECA areas like the North Sea and the Baltic Sea in northern Europe. Improving Fuel Economy • Exhaust heat is used to reform fuel to generate mixture of H2 and CO with higher calorific value. Reformer Fuel H2O Exhaust Heat Increase in calorific value H2 CO.
This paper describes the results of an experimental investigation of the exhaust gas assisted fuel reforming process as a means of achieving reduction of both smoke and NO x diesel engine emissions. Using a reforming mini-reactor with exhaust gas from a single-cylinder DI diesel engine, diesel fuel was reformed and a hydrogen-rich gas was by: Overcoming diesel engine emissions trade-off effects, especially NO x and Bosch smoke number (BSN), requires investigation of novel systems which can potentially serve the automobile industry towards further emissions reduction. Enrichment of the intake charge with H 2 + N 2 containing gas mixture, obtained from diesel fuel reforming system, can lead to new generation low polluting diesel by: As mentioned earlier, in the case where an exhaust gas fuel reformer will be incorporated into the engine exhaust to provide H 2-rich gas to the SCR catalyst, an optimisation of the reactant feed rates will be required for the different engine exhaust gas compositions in order to increase H 2 production and eliminate by: Since , most of the new diesel-powered passenger car and light-weight commercial vehicles have to use Diesel Particulate Filter’s (DPF) to remove soot particles from the exhaust gas. A way to raise the exhaust gas temperature required to initialise the regeneration is by injecting vaporised fuel into the exhaust gas via a dosing device, e.g. fuel vaporiser, but this approach .