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Technical Paper

“STATE OF THE ART” REPORT ON WINTERIZATION OF CONSTRUCTION EQUIPMENT

1964-01-01
640064
As increasing populations set demands for the abundant natural resources of the colder regions, the complex industrial machines of American Industry are expected to build the new railroads, roads, cities, mines, power sources, airports and factories, and operate these activities year round. This paper reviews the basic problems of “winterization” and the design practices, materials and components used with varying effectiveness in “winterizing” construction and associated equipment for use in moderate and extreme cold geographical areas. Several new charts are included which offer design temperature data for the northern United States, Canada, Alaska, Greenland, as well as average January isotherms around the earth. The authors are members of CIMTC Subcommittee XV, “Environment”.
Technical Paper

“EVO: New Metallic Substrate Development for Commercial Vehicle and Non-Road Applications”

2021-09-22
2021-26-0211
Affordable, efficient and durable catalytic converters for the Commercial Vehicle and Non-Road industry in all countries are required to reduce vehicle emissions under real world driving conditions and fulfill future legal requirements. Specially for India traffic conditions and payload to engine size conditions new cost-effective solutions are needed to participate in a cleaner and healthier environment. Metallic substrates with structured foils like the Transversal StructureTM (TS) or the Longitudinal StructureTM (LS) have been proved to be capable of improving conversion behavior, even with smaller catalyst size. Now Vitesco Technologies is developed a new Substrate for Heavy duty applications that specifically maintains the geometric surface area at a very high level and improves further the mass transport of the pollutants, which potentially leads together to very high pollutant conversion rates.
Technical Paper

ZF EE Drive - Electric Drive System for Low-Floor Buses

1994-11-01
942242
The current environmental situation in urban areas is demanding new concepts of transportation and innovative vehicle designs. More environmentally-friendly means of transport represent an important feature in local public transport. Improvements in the environmental situation are to be achieved by increased transition from individual transport to public transport on the one hand, and by having more environmentally-friendly buses on the other. Electric drive, whether as diesel, hybrid or zero-emission drive, has a central role to play in this. This report gives a survey of their estimated technical characteristics and possible applications.
Article

Work trucks strive to curtail addiction to fuel

2017-03-17
Reducing fuel consumption was a focal point of several trucks unveiled in March. Electric drivetrains and four-cylinder engines were among the tactics unveiled at the Work Truck Show in Indianapolis.
Journal Article

Windshield Glare from Bus Interiors: Potential Impact on City Transit Drivers at Night

2019-11-15
Abstract Windshield glare at night is a safety concern for all drivers. Public transit bus drivers also face another concern about glare caused by interior lighting sources originally designed for passenger safety. The extent to which interior light reflections contribute to glare is unknown. Unique methods for measuring discomfort and disability glare during bus driving were developed. An initial simulation study measured windshield luminance inside of a New Flyer D40LF diesel bus parked in a controlled, artificial, totally darkened test environment. Findings indicated significant disability glare (from elevated luminance) in the drivers’ primary field of view due to interior reflections. Any reduction in contrast would result in less prominent glare if actual driving conditions differ. To assess this, levels of windshield glare were also measured with the bus parked on the roadside under the “background glow” of the urban environment.
Technical Paper

Whole-Body Vibration Exposures in Urban Bus Drivers: The Influence of Road Type

2014-11-04
2014-36-0793
Bus drivers are daily exposed to whole-body vibrations (WBV) submitted to risks for develop health problems related to these conditions. Numerous studies focused to quantify and identify the risks that drivers are exposed have been developed in recent years. Many factors influence the transmission of vibration to the body. Road type may be an important factor in determining the WBV exposure a bus driver receives. In urban areas, common types of routes include several road surfaces like: smooth highway, older rough freeway, pavement, bumpy, speed humps, and others. The purpose of this study was to determine whether different kinds of road surfaces, found in urban routes, cause different WBV responses, and determine the influence for each road type in daily exposure to WBV according the standard ISO 2631-1 (1997).
Journal Article

Weld Fatigue Damage Assessment of Rail Track Maintenance Equipment: Regulatory Compliance and Practical Insights

2024-03-04
Abstract The use of appropriate loads and regulations is of great importance in weld fatigue assessment of rail on-track maintenance equipment and similar vehicles for optimized design. The regulations and available loads, however, are often generalized for several categories, which proves to be overly conservative for some specific categories of machines. EN (European Norm) and AAR (Association of American Railroads) regulations play a pivotal role in determining the applicable loads and acceptance criteria within this study. The availability of track-induced fatigue load data for the cumulative damage approach in track maintenance machines is often limited. Consequently, the FEA-based validation of rail track maintenance equipment often resorts to the infinite life approach rather than cumulative damage approach for track-induced travel loads, resulting in overly conservative designs.
Technical Paper

Web-Based Vehicle Remote Access and Its Application to In-Vehicle Network Integrated Fleet Management

2001-03-05
2001-01-0067
The demands for effective and efficient management of commercial vehicles and freight transport have led to the increasing needs for sophisticated fleet management systems (FMS) for reducing the operation cost of commercial vehicle operation, improving custom service and asset management as well as maintaining the safety and security. The availability and declining costs of telecommunications and information technologies afford opportunities for using real-time information to achieve these targets and the emergence of internet technology make it possible to transfer updated real-time information through more widely available communication media. This paper introduces the web-based remote-access concept for the real-time information acquisition, which has been used to enhance functionality of a dynamic fleet management system.
Article

Volvo E excavators said to excel in efficiency

2014-07-21
The new Tier 4 Final/Stage IV-compliant EC250E and EC300E crawler excavators from Volvo Construction Equipment were designed to reduce fuel consumption and increase productivity.
Article

Volvo CE launches its largest excavator and articulated hauler

2016-05-04
At the recent Bauma 2016 in Munich, Volvo Construction Equipment President Martin Weissburg revealed the largest excavator and articulated hauler the company has ever produced, and provided his thoughts on connectivity trends and the market in China.
Technical Paper

Vertical Load Impact of an Urban Front Engine Bus on the Pavement

2012-05-16
2012-36-0034
The main objective of this paper is to present the different methods of pavement dimensioning, applied on the Brazilian roads, in order to compare the loads used in the calculation with a real application. It has been used a 4×2 vehicle with the maximum load distribution allowed in Brazil (6 tons in the front axle / 10 tons in the rear axle). It has been instrumented the rear axle with strain gauges to simulate it as a load cell. Measurements were done on a real urban application (Curitiba city - Brazil). Results showed significant differences between the load used in the Brazilian pavement dimensioning methodology and the dynamic vertical load, which could have a direct impact on the pavement lifetime. This paper was supported by three different agency / companies: UNICAMP, Volvo do Brasil and Meritor do Brasil Sistemas Automotivos Ltda.
Book

Vehicle-Bridge Interaction Dynamics

2004-01-01
The commercial operation of the bullet train in 1964 in Japan marked the beginning of a new era for high-speed railways. Because of the huge amount of kinetic energy carried at high speeds, a train may interact significantly with the bridge and even resonate with it under certain circumstances. This book is unique in that it is devoted entirely to the interaction between the supporting bridges and moving trains, the so-called vehicle-bridge interaction (VBI). It provides an up-to-date coverage of research conducted on various aspects of the VBI problems. Using the series of VBI elements derived, the authors study a number of frontier problems, including the impact response of bridges with elastic bearings, the dynamic response of curved beam to moving centrifugal forces, the stability and derailment of trains moving over bridges shaken by earthquakes, the impact response of two trains crossing on a bridge, the steady-state response of trains moving over elevated bridges, and so on.
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