New Technology with Porous Materials; Progress in the Development of the Diesel Vehicle Business

2011 ◽  
Vol 484 ◽  
pp. 15-20
Author(s):  
Kazushige Ohno
Keyword(s):  
Porous Materials ◽  
Thermal Shock ◽  
Evaluation Method ◽  
New Technology ◽  
Exhaust System ◽  
Particulate Filter ◽  
Common Rail System ◽  
Long Time ◽  
Main Factors ◽  
Diesel Vehicle

The long time of twenty years has passed since Diesel Particulate Filter (DPF) was proposed before the practical use. The main factors that DPF has been put to practical use in this time, are the same time proposal of the evaluation method of SiC porous materials linked to the performance on the vehicle, and that the nature of thermal shock required for the soot regeneration (combustion of soot) in the DPF is different from the conventional requirement for the rather rapid thermal shock. For the requirements, these include demonstrating utmost the characteristic of SiC’s high thermal conductivity, and overcoming the difficulty of thermal expansion of SiC-DPF by dividing the filter into segments binding with the cement of lower Young’s modulus, and the innovation of technology around the diesel exhaust system such as Common-Rail system. As the results of these, the cumulative shipments of SiC-DPF have reached about 13 million, and it goes at no claim in the market.

A New Technology with Porous Materials; Progress in the Development of the Diesel Vehicle Business

2008 ◽  
Vol 403 ◽  
pp. 207-210
Author(s):  
Kazushige Ohno
Keyword(s):  
Porous Materials ◽  
Thermal Shock ◽  
Evaluation Method ◽  
New Technology ◽  
Exhaust System ◽  
Particulate Filter ◽  
Common Rail System ◽  
Long Time ◽  
Main Factors ◽  
Diesel Vehicle

The long time of twenty years has passed since Diesel Particulate Filter (DPF) was proposed before the practical use. The main factors that DPF has been put to practical use in this time, are the same time proposal of the evaluation method of SiC porous materials linked to the performance on the vehicle, and that the nature of thermal shock required for the soot regeneration (combustion of soot) in the DPF is different from the conventional requirement for the rather rapid thermal shock. For the requirements, these include demonstrating utmost the characteristic of SiC’s high thermal conductivity, and overcoming the difficulty of thermal expansion of SiC-DPF by dividing the filter into segments binding with the cement of lower Young’s modulus, and the innovation of technology around the diesel exhaust system such as Common-Rail system. As the results of these, the cumulative shipments of SiC-DPF have reached about 5 million, and it goes at no claim in the market.

Robust Test Method of TSOP PEMs for Space Application

2019 ◽  
Author(s):  
Yasunobu Iwai ◽  
Koichi Shinozaki ◽  
Daiki Tanaka
Keyword(s):  
Evaluation Method ◽  
Low Cost ◽  
Reliability Evaluation ◽  
Test Method ◽  
Thermal Shock Test ◽  
Space Application ◽  
Space Applications ◽  
Limit Test ◽  
Long Time ◽  
Short Time

Abstract Compared with space parts, consumer parts are highly functional, low cost, compact and lightweight. Therefore, their increased usage in space applications is expected. Prior testing and evaluation on space applicability are necessary because consumer parts do not have quality guarantees for space application [1]. However, in the conventional reliability evaluation method, the test takes a long time, and the problem is that the robustness of the target sample can’t be evaluated in a short time. In this report, we apply to the latest TSOP PEM (Thin Small Outline Package Plastic Encapsulated Microcircuit) an evaluation method that combines preconditioning and HALT (Highly Accelerated Limit Test), which is a test method that causes failures in a short time under very severe environmental conditions. We show that this method can evaluate the robustness of TSOP PEMs including solder connections in a short time. In addition, the validity of this evaluation method for TSOP PEM is shown by comparing with the evaluation results of thermal shock test and life test, which are conventional reliability evaluation methods.

Farmers' willingness to adopt irrigation for quinoa in communities of the Central Altiplano of Bolivia

2011 ◽  
pp. 7-28 ◽  
Author(s):  
Cristal Taboada ◽  
Armando Mamani ◽  
Dirk Raes ◽  
Erik Mathijs ◽  
Magalí García ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
New Technology ◽  
Farming Systems ◽  
Average Yield ◽  
Abiotic Conditions ◽  
Surplus Production ◽  
Irrigation Technology ◽  
Willingness To Adopt ◽  
Bolivian Altiplano ◽  
Main Factors

Quinoa is considered a strategic crop because it is well adapted to the adverse abiotic conditions of the Bolivian Altiplano; however, the average yield is low. Previous studies have demonstrated that quinoa yield would increase with deficit irrigation technology. Nevertheless, to irrigate quinoa is not a normal practice in the farming systems of the Altiplano. This paper examines the main factors that determine the attitude of farmers towards adopting deficit irrigation using a sample of 137 surveys in seven communities of the Central Altiplano. Statistic analysis demonstrates that the most important factors influencing farmers' willingness for irrigation adoption are the acreage planted with quinoa, quantity of surplus production for trading, and having irrigation experience. Also, the age and education level were important to know willingness to adopt a new technology. Therefore, deficit irrigation is more likely to be performed in area where farmers own larger fields and where there is already certain type of irrigation.

Mechanical Analysis of Warm Extrusion Precision Forming on 42CrMo Steel Cutting Pick

2012 ◽  
Vol 538-541 ◽  
pp. 1061-1066 ◽  
Author(s):  
Chun Jian Su ◽  
Quan Lan Li ◽  
Lin Jing Xiao ◽  
Su Min Guo
Keyword(s):  
New Technology ◽  
Mechanical Analysis ◽  
Extrusion Force ◽  
Factors Affecting ◽  
42Crmo Steel ◽  
Pick Body ◽  
Mining Tool ◽  
Main Factors ◽  
The Cost ◽  
Warm Extrusion

Cutting pick is a kind of widely-used consumptive mining tool. The traditional producing technics of cutting pick body is foundry, or machining after roughly forging, or machining directly from metal bar. By former technics, the property of products is poor, and by latter, the material availability is low and the cost is high. The patent technology for cutting pick body warm extrusion introduced in this paper can overcome all the disadvantages mentioned above. In this paper, by analyzing the characteristic of cutting pick body warm extrusion, adopting the principle of power balance to solve the approximate solution of strain forces, the approximate calculating formulas of extruding power are deduced. The main factors affecting on extrusion force are determined theoretically. This research can be used as basis to design tooling and choose proper equipment for this new technology.

scholarly journals Muscle fatigue evaluation method of driver at long time driving based on blood lactate level increase

2020 ◽  
Vol 86 (889) ◽  
pp. 19-00433-19-00433
Author(s):  
Takumi YAMAKAWA ◽  
Soichiro HAYAKAWA ◽  
Katsuhiro ASANO ◽  
Shigeyoshi TSUTSUMI ◽  
Ryojun IKEURA
Keyword(s):  
Muscle Fatigue ◽  
Blood Lactate ◽  
Lactate Level ◽  
Evaluation Method ◽  
Blood Lactate Level ◽  
Level Increase ◽  
Long Time ◽  
Fatigue Evaluation

scholarly journals Thermal Stresses in Porous Materials under Thermal Shock by Cooling Medium-Infiltration Effect on Thermal Stress Distributions-

2004 ◽  
Vol 112 (1303) ◽  
pp. 172-178 ◽  
Author(s):  
Hiroaki TANAKA ◽  
Yuji MAKI ◽  
Kazuki TSUBOI ◽  
Sawao HONDA ◽  
Tadahiro NISHIKAWA ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Porous Materials ◽  
Thermal Shock ◽  
Thermal Stresses ◽  
Stress Distributions ◽  
Cooling Medium

Environmental indicators of modern land vehicles

2020 ◽  
Keyword(s):  
Control System ◽  
Nitrogen Oxides ◽  
Greenhouse Effect ◽  
Power Plants ◽  
Catalytic Converter ◽  
Exhaust System ◽  
Environmental Indicators ◽  
Solid Particles ◽  
Particulate Filter ◽  
Land Vehicles

Models and mechanisms for the formation of soot and nitrogen oxides during the combustion of hydrocarbon fuels of power plants of vehicles have been developed. Models of numerical modeling and calculation of solid particles, nitrogen oxides and urea of diesel engines are formulated. The potential for the formation of a greenhouse effect is briefly described. The regularity of the relationship between nitrogen oxides and soot was revealed. A schematic diagram of the oxidizing neutralizer and particulate filter of modern diesel is given. The diagram of the urea supply system and the urea atomization module in the engine exhaust system is given. The scheme of the control system for catalytic neutralization of nitrogen oxides is given. A comparative assessment of nitric oxide reductants is given. An assessment of the technical and environmental effectiveness of the system for reducing the toxicity and smoke content of modern engines is given. Keywords greenhouse effect, smokiness, solid particles, urea, soot, diesel, acetylene, soot filter, catalytic Converter, nitrogen oxides, models for calculating soot and nitrogen oxides, urea supply module, control system

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