Honeycomb-Shaped Brass Plate Catalyst to Reduce Motor Vehicle Emissions

The increasing number of motorized vehicles has a direct impact on exhaust gas air pollution. The air pollution in urban areas is dominated by motorized vehicle emissions, along with pollution problems. This study aims to reduce motor vehicle emissions by using a catalytic converter design made from a brass plate catalyst in the shape of a honeycomb. Honeycomb-shaped brass is suitable for catalysts in the catalytic converter. Besides being easy to obtain and cheap in price, the catalyst can reduce and oxidize exhaust gases well, making it suitable as a catalyst material. The method used in this research is the experimental method. It is started from the design of the catalytic converter house and determining the type of catalyst to the process of making the catalytic converter with a honeycomb-shaped brass plate. Then, testing to determine the emission of exhaust gases produced is required. The last step is to compare it without using a catalytic converter or standard conditions. From the results of the emission test, it was found that the use of a catalytic converter made from a brass plate catalyst in the shape of a honeycomb can reduce HC and CO emissions, while CO2 emissions have increased. A decrease in HC gas emissions by 19.1% for a single catalytic converter and 33.7% for a dual catalytic converter is better compared to without using a catalytic converter or standard conditions. Reduced CO gas emissions by 23.8% for a single catalytic converter and 43.1% for a dual catalytic converter are compared to without using a catalytic converter. Meanwhile, CO2 gas emissions increased by 60.7% for a single catalytic converter, and 81.6% for multiple catalytic converters are compared without using a catalytic converter. This is a result of the addition of oxygen to the oxidation process that running smoothly.

Mechanical bonding in cold roll-cladding of tri-layered brass/steel/brass composite

In this paper, brass/steel/brass clad-composite was fabricated using a cold roll-bonding process. Composite sheets were roll-bonded at reduction ratios between 37 and 72% at room temperature from strips of 150 mm in length and 30 mm wide, in one pass without lubrication. The threshold deformation for successful bonding was at a thickness reduction of 48% and peel strengths of the bonds were measured to be approximately 12 N cm-1, and it was found to escalate with an increase in the rolling reduction. The optimum reduction in thickness was ~66% wherein the peel strength was ~33 N cm-1. Various techniques such as optical and electron microscopy were implemented to analyze and investigate the effects of the reduction in thickness and the joining mechanism. The results showed that an increased reduction in thickness in rolling leads to an increase in the joining strength. Furthermore, increasing the brass plate thickness negatively affects the joining strength. A Cu peak on the peeled-off steel surface and the presence of Fe on the peeled-off brass surface strongly suggest that the major bonding between brass and steel was mechanically induced metallurgical bonding.

Simulasi Sebaran Temperatur Pelat Logam Tipis Besi dan Kuningan Berbasis Matlab

Simulating the temperature distribution of iron and brass metal thin plates based on matlab has been performed. This simulation aimed to study iron plate and brass plate conductors of the temperature distributionbased on conduction mechanism on cartesian coordinate system. The initial temperature in all parts of the thin plate is room temperature, except at left side and right side of the plate is 100 oC. Through numerical calculation of heat conduction equation by Finite Difference Method, we got that the temperature at center thin plate for 10 second is 63,26oC and 62,08 oC for brass thin plate and iron thin plate, respectively.

Monte Carlo Simulation of a Uniform Response Silicon X-ray Detector

X-ray semiconductor detectors do not show an equal responsiveness for different incident photon energies. Detector response is required to be independent from the energy especially for dose measurements in medical or nuclear safety applications. So the target of the project is to achieve an energy independent response of the silicon x-ray detector. The active area of the silicon detector is partly covered with a brass plate featuring a round hole with a thin aluminum foil. The diameter has to be optimized to achieve an energy independent response of the detector. Monte Carlo simulation toolkit Geant4 is used to model the structure, matter and physical properties of the device. Silicon detector has a surface area of 10 mm x 10mm and about 500 um thick. Brass plate with thickness of 1.8 mm and round hole is mounted on top of it. X-ray photons with energies in different steps between 50 keV and 150 keV are used in the simulation. Monte Carlo simulation results presented in this report determines the best possible energy independent response of the silicon x-ray detector.

PENGGUNAAN KUNINGAN SEBAGAI BAHAN CATALYTIC CONVERTER TERHADAP EMISI GAS BUANG dan PERFORMA MESIN SUZUKI SHOGUN AXELO 125

The purpose of this study was to determine the use of brass plate catalysts in the exhaust channel of Suzuki Shogun Axelo 125 in 2010. This study used an experimental method. The population in this study was a Suzuki Shogun Axelo 125 motorbike in 2010, the research data was a number showing gas content remove CO2, CO, HC. This research was carried out in the banjarmasin environment office using a gas analyzer and was also conducted at the Banjarmasin plug and play workshop by using a dynamometer. The technique used in data collection was the variation in rpm and number of plates. (1) The results of this study are: Forming a catalytic converter with plate variation 8 (eight) so that the level of CO2 emission reduction is maximum of 52,7%, the level of CO emission reduction is 82.23%, and the level of HC emission reduction is 74,08%. The form of catalytic converter with plate variation 6 (six), the maximum CO2 emission reduction level is 29,56%, the level of CO emission reduction is 49.32%, and the level of HC emission reduction is 82,92%. (2) By using catalytic converters with plate variation 8 (eight) to produce power of 8.045 hp and torque of 8,833 n / m and for catalytic converters with plate variation 6 (six) producing power of 7.661 hp and torque of 8.493 n / m.