Research Of Microwave Applied In The Engine Emission Control

Now the engine has been keeping to increase significantly by its good economic capability. With the build-up of society environmentattention, people know the emission of the engine is terrible. With the development of microwave heating technology, the applications about the emission of engine have become the newly arisen and popular studies. In the 1990's earlier someone had applied the microwave technique in this realm, and acquired some practical results. The microwave heating technique is different from the normal heating, and is a kind heating technique of matter heated outside and inside almost at the same time,.and it not only heats quick and even, but also has the selectivity. Its selectivity is because the ability of material's absorbing the microwave energy is decided by itself permittivity. To make use of these characteristics.we can not only make the diesel soot burn that accumulates in the diesel wall-flow ceramic particulate filter, but also maintain the ceramic filter to be placed in the lower temperature so as to it's not damaged. This paper, as primary study on this realm because of only study in laboratory, We have accomplished 260 hours bench test in Changchun Automobile Institute, and discusses the microwave characteristics of the particle from diesel emission and the behaviors of the catalyst (metals oxide) chosen in the microwave field. It gives out the theory hermeneutic on the microwave heating and at the same time explains the possibility of that method in this paper.Thesis inside the first part overviews now domestic and international counterplan and main technique to deal with the diesel emission pollution, and expatiate every kind of method. Contrasting these methods, we can clearly understand microwave heating technique's goodness and weakness and its position in handling method, and also establish and tackle key problems of the microwave heating regeneration technique.The second part carried on the possibility research in elaborate that the microwave heat the foundation of the theories ascend to the microwave after diesel engine reborn process of processor, know to all, the microwave heats the very turn of the process and the material inner part member closely related, then have something to do with material of lie give or get an electric shock constant, so enumerated the microwave characteristic of a few in common use percolation materials and the carbon smokes in the text. Can know that the carbon smoke particle exhausts the coefficient andattenuation to reduce the constant from these datas bigger than general percolation material's have to have another, it has the very strong absorption ability to the microwave energy, exactly this characteristic just guaranteed that the microwave heats and can used for rebirth that filters the body.Adopted the cordierite granite wall flow type percolation body in experiment process, the microwave for it is basic is transparent, don't absorb the microwave, but because the particle wants to transmit heat toward the percolation body framework that it depend on, this will lower to heat temperature ascend velocity by all means.Moreover the granite material of cordierite contain a very big blemish, the namely fire-proof degree is low and transmits heat sex bad, many occurrence still filter the body inner part to burn the but surfaces in reborn process there is a small layer have no reborn circumstance, so to the rebirth of this material, the key problem is to choose the fit microwave power and the microwave energies to distribute the form.The third part is after carry on the possibility research, emulation carry on in the laboratory experiment, make use of a 12 horsepower diesel engine of horsepowerses to carry on hanging the smoke, settle sex of carry on the first step experiment to the reborn system of microwave, and obtained the decent experiment result; Four-part cent is the pedestal experiment, imitate the experiment to obtain the successful foundation in the laboratory up, carried on the pedestal in a the vapor technique center in China for 260 hours experiment, experimenting the conclusion to also confirm that the laboratory imitates the experience result. After microwave applied in diesel engine after the processor rebirth obtain the success, we throw vision to the gasoline launches the machine, know to all, the air pollution big part of the city comes from the car, so the row spirit of the valid control gasoline machine exhaust, will improve the city residents' living environment effectively, in applying microwave successfully after diesel engine reborn process of processor after, we to the research that the row spirit pollution of the gasoline machine was the first step, textual the fifth part be tries ground to heat microwave the technique application is in the gasoline machine , designed the experiment project, and to experiment the possible existent problem did...