What are the advantage and drawbacks of the catalytic converter method compared to blowing air only into the exhaust manifold?
Answers from top 10 papers
More filters
| Papers (10) | Insight |
|---|---|
| These benefits are primarily realized by reducing the air flow through the engine, directly resulting in higher exhaust temperatures and lower pumping penalties compared to conventional six-cylinder operation. | |
| The results obtained in this study showed that the use of catalytic converters resulted into cleaner exhaust compositions and emissions with characteristics that are distinct from those obtained in the absence of catalytic converters. | |
37 Citations | The high content of exhaust oxygen largely negates the effectiveness of three way catalytic converters, and the comparatively low temperature of the combusted gases means that supplemental energy has to be added to these gases to enable the converter to function correctly. |
01 May 2017 | This catalytic converter system is cash effective and more economical than the existing catalytic converter. |
9 Citations | Additional benefits include a lower exhaust temperature which is better for the Selective Catalytic Reduction (SCR) catalyst. |
07 Dec 2020 19 Citations | Optimum design of catalytic converter was able to reduce exhaust emission. |
01 Mar 1993 180 Citations | Performance improvements, of catalytic converters, and longer service life can be achieved by improving the flow distribution of exhaust gases. |
Open access•Journal Article 7 Citations | By creating turbulence just before the catalytic converter, it creates high degree of randomness in the exhaust gases particles and due to this random movement they face larger contact area with the catalysts inside the catalytic converter and thus improves the effectiveness of the catalytic converter by increasing the rate of redox reactions. |
41 Citations | (4) Optimum Design of Model 2 Catalytic Converter was able to reduce exhaust emissions of Carbon Monoxide. |
| The speed, load, compression ratio and the injection of air into the catalytic converter are found to show strong influence on reduction of the pollutants in the exhaust. |
Related Questions
What are the advantages and disadvantages of each type of ammonia slip catalyst?5 answersThe advantages and disadvantages of each type of ammonia slip catalyst vary depending on the specific catalyst being used. In the study by Yuan et al., it was found that metal-free carbon catalysts with electrophilic carboxyl groups (-COOH) exhibit strong adsorption towards NH3 but do not participate in the SCR reaction. This can prolong the time to the SCR steady state and result in the potential risk of NH3 slip. On the other hand, the study by Andersen and Doura describes a two-layer oxidation catalyst of slipped ammonia that includes a selective catalytic reduction catalyst bed (SCR catalyst) and an oxidation catalyst layer. This catalyst has been shown to effectively reduce the concentration of ammonia in off-gas. Therefore, the advantages and disadvantages of each type of ammonia slip catalyst depend on factors such as the specific catalyst composition and its effectiveness in reducing NH3 emissions.
What is the role of catalyst converters in the reduction of greenhouse gas emissions?5 answersCatalytic converters play a crucial role in the reduction of greenhouse gas emissions. They are used to convert carbon dioxide (CO2) into chemicals that can serve as energy vectors in a carbon-based energy cycle. These converters utilize redox catalysts with high turnover number, selectivity, and efficiency to overcome the stability of CO2. The reduction of CO2 requires catalysts in various reaction modes, such as electrocatalytic, photoelectrocatalytic, or photocatalytic. Mechanistic studies are important for understanding the detailed mechanisms of CO2 reduction and guiding catalyst design. The catalytic conversion of CO2 into clean fuel and value-added chemicals is a promising approach to address greenhouse gas emissions and energy shortage. Catalysis will play a critical role in reducing the flow of greenhouse gases into the atmosphere, and various catalytic processes, such as water electrolysis, steam reforming, and biomass waste transformation, are being explored for this purpose.
What is the role of catalyst converters in the reduction air pullountion?5 answersCatalytic converters play a crucial role in reducing air pollution by converting harmful emissions into less harmful substances. They are designed to improve the flow of exhaust gases while reducing pressure loss and providing a silencing effect. The performance of a catalytic converter is highly dependent on the air-fuel ratio of the gas mixture flowing through it. When the gas mixture entering the catalyst has a stoichiometric air-fuel ratio, the conversion efficiency of hydrocarbons, carbon monoxide, and oxides of nitrogen is highest. Additionally, the efficiency of a catalytic converter is influenced by how the flow is distributed across the substrate inlet section, with better performance observed at lower space velocities. Electrochemical catalyst converters are also used to remove oxynitrides, carbon monoxide, hydrocarbons, and particulate materials from exhaust gases through electrochemical promotion and catalyzing reactions.
Is catalytic converters needed for nuclear power plants?10 answers
Which stirrer is best for mixing in catalytic converters?10 answers
Why the extra oxygen is provided in 3 way catalytic convertor?10 answers