نتایج جستجو برای: electric locomotive
تعداد نتایج: 145344 فیلتر نتایج به سال:
The present research is focused on developing solutions for increasing the lifetime of the batteries used on diesel locomotive. In order to increase the lifetime of the batteries and to reduce the fuel consumption and the pollutants, an intelligent starting system of the diesel locomotive is proposed. The starting system is composed of supercapacitors, batteries and adequate control system used...
Anxiety symptoms have been reported to be present in many patients with diabetes mellitus. However, little is known about the effects of hyperglycemia in critical periods of the central nervous system development. We assessed locomotive, exploratory, and anxiety behaviors in adult rats that remained from infantile repeated hyperglycemia by the open field and elevated plus maze tests. Our findin...
The article considers the issue of system running gear a high-speed electric train with body inclination and oscillation recovery. authors considered main suspension systems body, which are currently used. problems these were put forward. Attention is paid to use air-spring suspension. pipe VL80 locomotive construction trolley itself considered. basic criteria an estimation efficiency perspecti...
Reliability and efficiency of the use traction rolling stock are determining parameters for technical economic development railway transport. About 20% total costs industry maintenance repair, since condition each unit is a fundamental element traffic safety. According to research, more than 60% malfunctions facilities during operation in direct correlation with locomotive failures that occurre...
Each day, railroads face the problem of allocating power to trains. Often, power requirements for each train are not known with certainty, and the fleet of locomotives may not be homogeneous. To deal with both of these complications, we formulate a multicommodity flow problem with convex objective function on a timespace network. The convex objective allows us to minimize expected cost under un...
Purpose: The importance of developing automatic speed control systems for hump-shunting diesel locomotives is demonstrated. Using as an example a shunting locomotive Type TEM7A mathematical description provided electric power transmission final controlling element the system and train object. A flow-chart generated system’s principle operation designed so to ensure main requirements are met. PI...
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