نتایج جستجو برای: catalytic converter
تعداد نتایج: 102498 فیلتر نتایج به سال:
rate. In the USA, the introduction of federal car exhaust emission standards in 1968 did lead to a reduction in deaths from exhaust poisoning (Clarke & Lester, 1987). EC legislation regarding exhaust emissions has now been introduced into the UK, and the use of catalytic converters (which reduce exhaust carbon monoxide content by 80-90%) is becoming more widespread. The case of a failed suicide...
In order to control vehicle exhaust emission effectively, the conversion efficiency of catalytic converter is one of the key monitoring and evaluated indexes. The signal monitoring system of oxygen sensor is built by the TI2812 microcontroller. The method is to obtain the eigenvector and correlation coefficient of signal energy distribution, and to determine the two signal correlativity by usin...
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
This paper introduces a model-based controller designed to minimize the total unburned hydrocarbons produced by the internal combustion engine and processed by the three way catalytic converter, during the warm-up period. We assume to feed back the temperature of the exhaust gas; having in mind to decouple the control of combustion from the control of intake manifold, we assumed as controllable...
Recently, environmental concern and demand for a catalyst’s high performance have increased and many research activities focused on the operation of a three-way catalyst (TWC) at the end of its lifetime. Catalyst aging is the loss of catalytic activity over time that has crucial importance in emission of three-way catalyst. The aim of this paper is, investigating experimentally the performanc...
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