催化转化器

整装催化转化器中CO氧化的数值模拟

Numerical simulation of CO oxidation in monolithic catalytic converter

车用催化转化器的CO空速特性

CO Airspeed Performance of Vehicle Catalytic Converter

基于BP神经网络的催化转化器工作效率监测

Converter efficiency monitoring of catalyst based on BP ANN

CFD在车用催化转化器结构优化设计中的应用

Application of CFD to the Optimal Design of Automotive Catalytic Converters

欧IV标准的催化转化器结构耐久性验证

Euro IV Converter ′ s Structure and Validation Test

用ANSYS工程分析软件对带有弥散器的催化转化器进行了设计模拟，从而得出最优化的设计结果。

The TWC with the deflector is optimized with ANSYS software then getting the optimized design method .

CFD技术在催化转化器上的应用研究

Study on CFD Technology Applying to Catalytic Converter

利用CFD分析催化转化器不同设计因素的影响

Analysis of the Effects of Different Design Factors in the Catalyst Converter by CFD

采用扫描电镜（SEM）和等离子质谱技术（ICP-MS）对配有三元催化转化器的汽车尾气中的颗粒物进行分析。

The particles were analyzed adopting scanning electron microscopy and ICP - MS .

电控LPG发动机催化转化器快速起燃的试验研究

Experimental study on catalytic converter fast light-off of electronically controlled LPG fuel injection engine

稀、浓燃状态运行时间对装有吸附还原催化转化器的稀燃汽油机NOx排放的影响

Effect of Lean and Rich Mixture Operating Time on NO_x Emission from Lean Burn Gasoline Engine with Adsorber - Reduction Catalytic Converter

吸附还原催化转化器降低稀燃汽油机NOX排放机理模拟与实验研究

Mechanism Simulation and Experiment Research of NOx Adsorber Reduction Catalyst for Reducing NOx Emission of Lean Burn Gasoline Engine

柴油机氧化催化转化器的研制FENTON试剂氧化MTBE的实验研究

The Research of Diesel Catalytic Oxidation Converter Treatment to MTBE by Using Fenton 's Reagent

催化转化器中CO化学反应属于气固非均相催化反应，在载体蜂窝孔内CO向催化剂固体表面的质量传输过程对CO的转化率有着重要影响。

Chemical reaction of CO is a gas solid catalytic reaction in catalytic converter . The mass transfer course of CO in honeycomb holes has very important effects on CO conversion ratio .

研究了电控LPG发动机的催化转化器安装位置、点火提前角和怠速转速对催化转化器快速起燃的影响。

The effects of converter position , ignition timing and idle speed on catalytic converter light-off behavior were studied on an electronically controlled LPG injection engine .

采用计算流体动力学（CFD）的方法，在一典型催化转化器结构的基础上，研究了催化转化器载体前端造型对其内部流动特性的影响。

The influence of the front shaped monolith on the internal flow of an automotive catalyst converter was studied by using computational fluid dynamic method ( CFD ) .

简要介绍了三效催化转化器（TWC）的结构和工作原理。

This paper makes brief introduction to the structure and working principle of three way catalytic converter .

对氧化催化转化器（DOC）和柴油机颗粒过滤器（DPF）进行了性能试验研究。

An experimental study on the performances of diesel oxidation catalyst ( DOC ) and diesel particulate filter ( DPF ) is conducted .

三效催化转化器在汽车尾气污染控制方面起到了重要作用，汽油发动机尾气中的有害气体通过安装三效催化转化器将有害气体转化为无害的CO2、N2和H2O，而得到有效控制。

Three-way catalytic converter plays a very important role in automobile emission control . After going through the three-way catalytic converter , toxic emission gas can become nontoxic gas , such as CO2 , N_2 and H_2O .

应用流体附面层理论和质量传输的基本原理分析了三元催化转化器蜂窝孔内的CO气体流动和质量传输的过程，解释了三元催化转化器CO空速特性的内在机理。

This paper uses the flow boundary layer theory and mass transfer theory to analyze the CO gas flow state and CO mass transfer course in catalytic converter honeycomb holes , and illustrate the intrinsic mechanism of CO airspeed performance .

为使排放达标车用汽油机均使用了无铅汽油与三元催化转化器（TWC）技术。

To meet the emission standards , the unleaded gasoline and three-way catalyst ( TWC ) technology are used in gasoline engines .

催化转化器作为重要的汽车尾气后处理技术，在汽车尾气排放控制方面起着关键性作用，其对三种有害气体HC、NOx和CO的转化效率可达到90%以上。

Catalyst is important to control automotive exhaust , its efficiency to transform HC 、 NOx and CO is more than 90 % . Because the condition is serious , the catalyst may be malfunction .

催化转化器对CO和THC净化效率分别为42%～99%、58%～93%，对NOx的催化转化率相对低一些，平均约为27%。

Catalytic conversion efficiencies of CO and THC were from 42 % to 99 % and from 58 % to 93 % respectively . But catalytic conversion rate of NO_x only reached 27 % .

在摩托车催化转化器前引入机后二次空气补给可以达到提供O2、提高催化转化器转化效率和使之快速起燃的目的，从而有效降低摩托车的排放。

If the secondary air is induced into motorcycle catalystic converter treated after exhaust gas dischages from cylinder , the conversion efficiency will be greatly improved with O2 provided and lighting-up quickened .

在建模过程中，运用CFD的知识和理论，建立了催化转化器内部流场和非稳态温度场数学模型，同时充分考虑化学反应放热对载体升温过程的影响，使得该模型更合理；

Special in the study : During the process of building the model , it is considered fully how the reaction heat influences the temperature of monolith , which makes the model consistent with the fact .

三效催化转化器对CO和THC转化效率达到90%以上，而对NOx的转化效率相对低一些。

Three-way catalysts are so effective to reduce CO and THC emissions that the catalytic conversion rate are over 90 % , while the NOx conversion efficiency is lower than that of CO and THC .

但是，HC和CO较原机有所增加，由于排气温度高于400℃，可以通过催化转化器将其消除。

But the unburned HC and CO increase , which can be reduced by a catalyze converter since the exhaust gas temperature is always more than 400 ℃ and higher than the required temperature of the catalyze converter .

为了对催化转化器进行实时的监控，以便向驾驶员及时发出催化转化器工作状态的有关信息，许多车上都安装了能对催化器进行监控的OBD系统。

In order to monitor catalyst timely and set some useful information about catalysts work state to the driver , many automobiles are installed with OBD system .

DOC（氧化催化转化器）系统由于结构简单，维护方便，成本较低，在国外已成为满足欧3及欧3以上排放法规的主要技术。

Because the DOC system has simple structure , low cost and maintenance friendly , it has become the main technology to meet the Euro 3 and over Euro 3 emission regulations in foreign countries .

试验结果表明：三元催化转化器位于吸附还原催化转化器之前的布置方案具有最好的降低稀燃汽油机NOx排放的效果.在该试验条件下，NOx催化转化率最高可达到97.3%。

The results showed that putting three way catalyst before the NO_x adsorber catalyst is the best scheme of reducing NO_x emission in lean burn gasoline engine , and NO_x conversion efficiency reaches 97.3 % in the experimental condition .