Download or read book Vibration Analysis of Heavy duty Diesel Vehicles written by Christopher Jack Campbell and published by . This book was released on 2009 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Truck drivers are more susceptible than other workers to lower back pain and spinal disorders caused by whole body vibrations, which are among the most common long term health effects for drivers. The dynamic behavior of trucks can be modeled and simulated to improve the design of the trucks, which can reduce the exposure of drivers to whole body vibrations. The main purposes of this study are to analyze vibrations for different manufacturers and road types, and to create a computer-based model using Adams to predict vibration anywhere on the model using acceleration data collected previously from on-road tests of real vehicles. Another objective of this study is to develop a method for validating an Adams model of trucks tested. Also, this study examines the results predicted by the simulations. This study uses vibration measurements that were made on twenty-two heavy-duty diesel vehicles from four different manufacturers, each driven on the same route, which include rural and interstate roads. Road types and manufacturers are compared using data from an accelerometer located underneath the driver seat. Vertical vibrations in five trucks are simulated using Adams, one truck from each manufacturer and one without a trailer. Vibrations in three orthogonal directions are compared for of the trucks. Results show that the vibrations on the roads of US-27 and I-75 are similar to each other, while the manufacturers show significant differences between one another. Two basic models were developed with Adams that use collected data to "drive" the model. Results are more accurate when the data from the transducers located on the body of interest are used as impact. Only one transducer is needed on the body of interest to provide accurate results. Since the mechanical properties of the trucks tested were not available, the model has not been validated. However, the model could be validated if the specifications of a tested truck were given.
Download or read book Design and Development of Heavy Duty Diesel Engines written by P. A. Lakshminarayanan and published by Springer Nature. This book was released on 2019-11-05 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to serve as a comprehensive reference on the design and development of diesel engines. It talks about combustion and gas exchange processes with important references to emissions and fuel consumption and descriptions of the design of various parts of an engine, its coolants and lubricants, and emission control and optimization techniques. Some of the topics covered are turbocharging and supercharging, noise and vibrational control, emission and combustion control, and the future of heavy duty diesel engines. This volume will be of interest to researchers and professionals working in this area.
Download or read book The Human Response Study to Whole body Vibration in the Cab of Heavy Duty Truck written by and published by . This book was released on 2009 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lower back pains are observed to be the most significant problem for most of the industrial workers who operate commercial trucks. Several factors such as road type, truck type, load, etc, have been found to affect the vibration exposure on the truck drivers. The main purpose of the current research is to collect the responses of Whole-body vibration to the truck driver and analyze the current levels of excitation from a variety of trucks. Present thesis work also examines the effects of different trucks, road types and loads to Whole-body vibration. Data collected in the United States on different types of trucks were processed with different processors and analysed as per the international standards: ISO 2361-1. First set of data were taken with HVM-100 on a scheduled on-road route from driver's seat cushion on different roads and load conditions. Second set of data were collected by DEWE data acquisition system from the trucks running on the same on-road route, with the application of additional transducers on driver's seat back, passenger's seat cushion as well as the cab floor. The frequency-weighted r.m.s accelerations were compared by different trucks on two different road types: interstate and rural highway for HVM data. The results from the same trucks with loaded trailer or without loaded trailer were also discussed in this thesis. The data recorded by DEWE system were analyzed with Matlab program to compare the frequency-weighted accelerations for different trucks. Additional analysis with VDV and jerk were also done. Road type was the primary factor affecting the driver's exposure. For both studies, the minimum 8-hr and the minimum 11-hr standard limits requiring a medical examination set by the standard for health were exceeded several times whereas the same for comfort was exceeded a lot of times. Overall, the driver was found to be safe as per ISO 2631-1 but the comfort levels were often exceeded. It is suggested that necessary action be taken to increase the comfort.
Download or read book Heavy duty Diesel Vehicle Inspection and Maintenance Study written by Christopher S. Weaver and published by . This book was released on 1988 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technologies and Approaches to Reducing the Fuel Consumption of Medium and Heavy Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2010-07-30 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technologies and Approaches to Reducing the Fuel Consumption of Medium- and Heavy-Duty Vehicles evaluates various technologies and methods that could improve the fuel economy of medium- and heavy-duty vehicles, such as tractor-trailers, transit buses, and work trucks. The book also recommends approaches that federal agencies could use to regulate these vehicles' fuel consumption. Currently there are no fuel consumption standards for such vehicles, which account for about 26 percent of the transportation fuel used in the U.S. The miles-per-gallon measure used to regulate the fuel economy of passenger cars. is not appropriate for medium- and heavy-duty vehicles, which are designed above all to carry loads efficiently. Instead, any regulation of medium- and heavy-duty vehicles should use a metric that reflects the efficiency with which a vehicle moves goods or passengers, such as gallons per ton-mile, a unit that reflects the amount of fuel a vehicle would use to carry a ton of goods one mile. This is called load-specific fuel consumption (LSFC). The book estimates the improvements that various technologies could achieve over the next decade in seven vehicle types. For example, using advanced diesel engines in tractor-trailers could lower their fuel consumption by up to 20 percent by 2020, and improved aerodynamics could yield an 11 percent reduction. Hybrid powertrains could lower the fuel consumption of vehicles that stop frequently, such as garbage trucks and transit buses, by as much 35 percent in the same time frame.
Download or read book Vehicle Vibrations written by Reza N. Jazar and published by Springer Nature. This book was released on 2024-02-11 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle Vibrations: Linear and Nonlinear Analysis, Optimization, and Design is a self-contained textbook that offers complete coverage of vehicle vibration topics from basic to advanced levels. Written and designed to be used for automotive and mechanical engineering courses related to vehicles, the text provides students, automotive engineers, and research scientists with a solid understanding of the principles and application of vehicle vibrations from an applied viewpoint. Coverage includes everything you need to know to analyze and optimize a vehicle’s vibration, including vehicle vibration components, vehicle vibration analysis, flat ride vibration, tire-road separations, and smart suspensions.
Download or read book Vehicle Noise Vibration and Sound Quality written by Gang Sheng Chen and published by SAE International. This book was released on 2012-04-04 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives readers a working knowledge of vehicle vibration, noise, and sound quality. The knowledge it imparts can be applied to analyze real-world problems and devise solutions that reduce vibration, control noise, and improve sound quality in all vehicles—ground, aerospace, rail, and marine. Also described and illustrated are fundamental principles, analytical formulations, design approaches, and testing techniques. Whole vehicle systems are discussed, as are individual components. The latest measurement and computation tools are presented to help readers with vehicle noise, vibration, and sound quality issues. The book opens with a presentation of the fundamentals of vibrations and basic acoustic concepts, as well as how to analyze, test, and control noise and vibrations. The next 2 chapters delve into noise and vibrations that emanate from powertrains, bodies, and chassis. The book finishes with an in-depth discussion on evaluating noise, vibration, and sound quality, giving readers a solid grounding in the fundamentals of the subject, as well as information they can apply to situations in their day-to-day work. This book is intended for: •Upper-level undergraduate and graduate students of vehicle engineering •Practicing engineers •Designers •Researchers •Educators
Download or read book Highway Safety Literature written by and published by . This book was released on 1979 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Real world Vehicle Activities and Loads on Heavy duty Diesel Vehicle Emissions written by Christie-Joy Brodrick and published by . This book was released on 2001 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Vibration and Noise Analysis in Vehicles written by Institute of Physics (Great Britain). Stress Analysis Group and published by . This book was released on 1975 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Based Analysis of the Stochastic Stability of Mechanical Structures Driven by White and Colored Noise written by Aydin Azizi and published by Springer. This book was released on 2019-02-14 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise introduction to the behavior of mechanical structures and testing their stochastic stability under the influence of noise. It explains the physical effects of noise and in particular the concept of Gaussian white noise. In closing, the book explains how to model the effects of noise on mechanical structures, and how to nullify / compensate for it by designing effective controllers.
Download or read book Force and Torsional Vibration Analysis of a Diesel Engine written by Edward Louis Broghamer and published by . This book was released on 1941 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Automotive Design Analysis written by John Fenton and published by Newnes. This book was released on 2013-10-22 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Automotive Design Analysis examines promising approaches to automotive design analysis. The discussions are organized based on the major "technological divisions of motor vehicles: the transmission gearbox and drive line; steering and suspension; and the automobile structure. This handbook is comprised of three chapters; the first of which deals with transmission gearboxes and drive lines. This chapter describes manual-shift gearbox design, synchromesh mechanisms, hydrokinetic automatic gearboxes, drive-line main assemblies, and drive-line losses. The next chapter is about vehicle suspensions and optimum handling performance, with emphasis on two categories of handling of vehicles: steady-state turning (or cornering) and the transient state. The behavior of the steering system, ride parameters, and the design and installation of spring elements are discussed. The third and final chapter focuses on the application of structural design analysis to the automotive structure. After explaining the fundamentals of structural theory in car body design, this book presents the analysis of commercial vehicle body and chassis. Throughout the book, maximum use is made of line-drawings and concise textural presentation to provide the working designer with an easy assimilable account of automotive design analysis. This book will be useful to young automotive engineers and newcomers in automotive design.
Download or read book Vehicle Noise and Vibration written by Institution of Mechanical Engineers (Great Britain). Automobile Division and published by . This book was released on 1984 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reducing Fuel Consumption and Greenhouse Gas Emissions of Medium and Heavy Duty Vehicles Phase Two written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-05-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medium- and heavy-duty trucks, motor coaches, and transit buses - collectively, "medium- and heavy-duty vehicles", or MHDVs - are used in every sector of the economy. The fuel consumption and greenhouse gas emissions of MHDVs have become a focus of legislative and regulatory action in the past few years. This study is a follow-on to the National Research Council's 2010 report, Technologies and Approaches to Reducing the Fuel Consumption of Medium-and Heavy-Duty Vehicles. That report provided a series of findings and recommendations on the development of regulations for reducing fuel consumption of MHDVs. On September 15, 2011, NHTSA and EPA finalized joint Phase I rules to establish a comprehensive Heavy-Duty National Program to reduce greenhouse gas emissions and fuel consumption for on-road medium- and heavy-duty vehicles. As NHTSA and EPA began working on a second round of standards, the National Academies issued another report, Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium- and Heavy-Duty Vehicles, Phase Two: First Report, providing recommendations for the Phase II standards. This third and final report focuses on a possible third phase of regulations to be promulgated by these agencies in the next decade.
Download or read book Review of the 21st Century Truck Partnership Second Report written by National Research Council and published by National Academies Press. This book was released on 2012-07-04 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In July 2010, the National Research Council (NRC) appointed the Committee to Review the 21st Century Truck Partnership, Phase 2, to conduct an independent review of the 21st Century Truck Partnership (21CTP). The 21CTP is a cooperative research and development (R&D) partnership including four federal agencies-the U.S. Department of Energy (DOE), U.S. Department of Transportation (DOT), U.S. Department of Defense (DOD), and the U.S. Environmental Protection Agency (EPA)-and 15 industrial partners. The purpose of this Partnership is to reduce fuel consumption and emissions, increase heavy-duty vehicle safety, and support research, development, and demonstration to initiate commercially viable products and systems. This is the NRC's second report on the topic and it includes the committee's review of the Partnership as a whole, its major areas of focus, 21CTP's management and priority setting, efficient operations, and the new SuperTruck program.
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1976 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
