Download or read book Fuel Consumption Reduction on Heavy Duty and Light Duty Commercial Vehicles by Means of Advanced Central Tire Inflation Systems written by Stefano D'Ambrosio and published by . This book was released on 2018 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Central Tire Inflation Systems written by and published by . This book was released on 1994 with total page 129 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 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 2010-08-30 with total page 250 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 Tire Pressure Systems Management CTIS Type for Medium and Heavy Duty Highway Vehicles written by Truck and Bus Tire Committee and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice defines the system and component functions, measurement metrics, and testing methodologies for evaluating the functionality and performance of ground vehicle central tire inflation systems (CTIS), also known as tire pressure management systems or tire pressure control systems (TPCS). Systems of this type allow the driver to select the operational tire pressure set point (TPSP) based on vehicle load and surface type (highway, off-highway, off-road, etc.) and maintain the inflation pressure to the vehicle specified level.These systems are recommended to address all serviceable tires as originally installed on a vehicle by the OEM and/or specialty vehicle manufacturer, and for the aftermarket (including replacement or spare parts) are recommended (but optional) to address all tire/rim combinations installed after initial vehicle sale or in-use dates.Systems for use by military and some other very rigorous off-road applications require such extreme performance requirements, particularly at very high and low temperature and other combat-based extremes that such applications may fall outside the recommended parameters of the subject document. In those cases, it is the responsibility of the procuring customer, vehicle OEM, and applicable component(s) OEM to determine what compromises might be required, and the suitability of design and performance solutions that may be outside of those recommended here.This document is applicable to all axle and all wheel combinations for the following vehicle types, but does not preclude its use on other vehicle typessingle unit powered vehicles exceeding 7257 kg (16000 U.S. pounds) gross vehicle weight rating (GVWR) and multi-unit vehicle combinations, up to three towed units, which use an SAE J560 connector for power and/or communication, or equivalent successor connector technology. For combination vehicles including two or more trailers, the dolly axles are also included. The included vehicles can be newly manufactured vehicles or existing vehicles, fitted with air or hydraulic braking systems. This document was reviewed and has been revised as part of the SAE Five-Year Review process.Updates (including corrections and clarifications) have been made to the scope and Sections 2, 5, 6, and 7.
Download or read book Tires and Passenger Vehicle Fuel Economy written by and published by Transportation Research Board. This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Central Tire Inflation Systems CTIS A Means to Enhance Vehicle Mobility written by R. W. Kaczmarek and published by . This book was released on 1984 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since there are numerous ways of increasing a wheeled vehicles overall mobility and effectiveness it then becomes a choice of which mobility features to incorporate into a vehicle design and how effective each of these features are from a performance and a cost effectiveness standpoint. One of the most effective and well proven systems that has been adapted to wheeled tactical vehicles to improve the overall vehicle mobility is CTIS. In general these systems, feature relatively simple designs, are a highly effective and convenient method of enhancing vehicle mobility and are relatively simple to operate. A CTIS can be defined as, A system incorporated in a wheeled vehicle which permits the vehicle tire pressures to be regulated by the vehicle driver/crew member from within the vehicle cab while on the move. If the vehicle tires are deflated from 50 psi to 15 psi the tire footprints will increase substantially. Whenever the area of the footprint is increased the ground pressure which that vehicle experiences is reduced. Assuming that the soil strength conditions are identical, the tractive effort and overall mobility for a vehicle will increase at the lower pressure level, hence allowing this vehicle to accomplish a high level of mobility performance.
Download or read book Tire Pressure Monitoring SystemsFor Medium and Heavy Duty Highway Vehicles written by Truck and Bus Tire Committee and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE recommended practice defines the system and component functions, measurement metrics, testing methodologies for evaluating the functionality and performance of tire pressure systems, and recommended maintenance practices within the known operating environments.This document is applicable to all axle and all wheel combinations for single unit powered vehicles exceeding 7257 kg (16 000 US lb) gross vehicle weight rating (GVWR), and multi-unit vehicle combinations, up to three (3) towed units, which use an SAE J560 connector for power and/or communication, or equivalent successor connector technology, or which use a suitable capacity wireless solution.Examples of included single chassis vehicles would be utility and delivery vans, tow trucks, rack trucks, buses, recreational vehicles, fuel trucks, trash trucks, dump trucks, cement trucks, and tractors. Examples of combination vehicles using an SAE J560 or successor connector would be enclosed van trailers, liquid tanker, platform trailer, logger trailers, auto transit trailers, and their associated and compatible towing power units. For combination vehicles including two or more trailers, the dollies are also included. The included vehicles can be newly manufactured vehicles or existing vehicles.These systems are recommended to address all tires in service as originally installed on a vehicle by the OEM and/or specialty vehicle manufacturer, including the vehicle mounted spares, and, for the aftermarket (including replacement or spare parts) are recommended (but optional) to address all tire/rim combinations installed after initial vehicle sale or in-use dates.This document will focus on tire pressure systems of the monitoring type.NOTE: The following systems are not being addressed in this edition of the document. The management system types and more mature/complex versions of maintenance and management types, to include on-board reporting/storage/retrieval data capabilities for both, will be addressed separately by future changes/additions to this document series. 1]Tire Pressure Maintenance Systems (typically known as ATIS Automatic Tire Inflation Systems) systems which sense pressure directly or indirectly and maintain tire pressure above a minimum specified threshold, and inform the driver of the system's activity. 2]Tire Pressure Management (adjustment) Systems (typically known as CTIS Central Tire Inflation Systems) systems which sense pressure, plus other pertinent parameters (i.e., vehicle load and speed, tire temperature, etc.) directly or indirectly, and adjust or sustain the pressure at a the level appropriate for the conditions, and inform the driver of the system's activity. Not applicable.
Download or read book Central Tire Inflation written by and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Automotive Chassis written by Giancarlo Genta and published by Springer Nature. This book was released on 2019-12-24 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook draws on the authors’ experience gained by teaching courses for engineering students on e.g. vehicle mechanics, vehicle system design, and chassis design; and on their practical experience as engineering designers for vehicle and chassis components at a major automotive company. The book is primarily intended for students of automotive engineering, but also for all technicians and designers working in this field. Other enthusiastic engineers will also find it to be a useful technical guide. The present volume (The Automotive Chassis – Volume 1: Component Design) focuses on automotive chassis components, such as:• the structure, which is usually a ladder framework and supports all the remaining components of the vehicle;• the suspension for the mechanical linkage of the wheels;• the wheels and tires;• the steering system;• the brake system; and• the transmission system, used to apply engine torque to the driving wheels. This thoroughly revised and updated second edition presents recent developments, particularly in brake, steering, suspension and transmission subsystems. Special emphasis is given to modern control systems and control strategies.
Download or read book Tire Pressure Monitoring Systems for Medium and Heavy Duty Highway Vehicles written by Truck and Bus Tire Committee and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE recommended practice defines the system and component functions, measurement metrics, testing methodologies for evaluating the functionality and performance of tire pressure systems, and recommended maintenance practices within the known operating environments.This document is applicable to all axle and all wheel combinations for single unit powered vehicles exceeding 7257 kg (16 000 US lb) gross vehicle weight rating (GVWR), and multi-unit vehicle combinations, up to three (3) towed units, which use an SAE J560 connector for power and/or communication, or equivalent successor connector technology, or which use a suitable capacity wireless solution.Examples of included single chassis vehicles would be utility and delivery vans, tow trucks, rack trucks, buses, recreational vehicles, fuel trucks, trash trucks, dump trucks, cement trucks, and tractors. Examples of combination vehicles using an SAE J560 or successor connector would be enclosed van trailers, liquid tanker, platform trailer, logger trailers, auto transit trailers, and their associated and compatible towing power units. For combination vehicles including two or more trailers, the dollies are also included. The included vehicles can be newly manufactured vehicles or existing vehicles.These systems are recommended to address all tires in service as originally installed on a vehicle by the OEM and/or specialty vehicle manufacturer, including the vehicle mounted spares, and, for the aftermarket (including replacement or spare parts) are recommended (but optional) to address all tire/rim combinations installed after initial vehicle sale or in-use dates.This document will focus on tire pressure systems of the monitoring type.NOTE: The following systems are not being addressed in this edition of the document. The management system types and more mature/complex versions of maintenance and management types, to include on-board reporting/storage/retrieval data capabilities for both, will be addressed separately by future changes/additions to this document series. 1]Tire Pressure Maintenance Systems (typically known as ATIS Automatic Tire Inflation Systems) systems which sense pressure directly or indirectly and maintain tire pressure above a minimum specified threshold, and inform the driver of the system's activity. 2]Tire Pressure Management (adjustment) Systems (typically known as CTIS Central Tire Inflation Systems) systems which sense pressure, plus other pertinent parameters (i.e., vehicle load and speed, tire temperature, etc.) directly or indirectly, and adjust or sustain the pressure at a the level appropriate for the conditions, and inform the driver of the system's activity. SAE J2848-1 has been reaffirmed to comply with the SAE Five-Year Review policy.
Download or read book Factors Affecting the Repeatability of the Fuel Consumption of a Heavy duty Truck on Urban and Highway Roads written by Mohamed Wahba and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Trends in vehicle control show an increasing reliance on data aggregation and model-based predictive control to improve vehicle performance. The data and models that underly this trend, when analyzed experimentally on-the-road, allow discovery of route and location-specific effects that are not typically captured with generic vehicle or road representations. The influence of these effects on the performance, fuel economy, and stability of vehicle systems - particularly heavy vehicles used individually or in platoons - is poorly understood.This thesis examines the location-specific variations and influences that affect the performance in terms of fuel economy of heavy-duty trucks in urban and highway routes. The methods are motivated by experimental data collection from large numbers of repeated route traversals, with data including vehicle position, speed, acceleration, fuel use as well as drag reduction for following trucks in the case of platooning. These measurements allow the dynamic fuel consumption to be matched as a function of distance along the route as measured in a spatial s-coordinate. Testing situations include conventional single-vehicle operation across a wide range of urban, arterial, and highway situations, as well as the platooning of two trucks on an interstate highway.The results demonstrate that terrain and position information within a route offer significant predictions in terms of fuel economy in a vehicle. Additionally, infrastructure elements, specifically vehicle-to-infrastructure (V2I) communication can be used not only to monitor route information, but also used by the infrastructure to constrain or define behaviors of the vehicle. Moreover, the geometric definition of a road was seen to change the behavior of the stability of a truck platoon. Also, the drag reduction experienced by truck platoon is quantified using wind-tunnel experiments. Afterwards, a framework is proposed where the number of route traversals needed to define a route in terms of fuel use and vehicle speed is obtained based on statistical confidence. Finally, two commercial Volvo trucks are used to obtain location-specific fuel consumption and drag estimates when undergoing a fixed gap-distance in a truck platoon on Interstate-99. When the inter-vehicle platoon spacing was fixed to a one vehicle length, the fuel consumption reduction had a per-route average improvement of 13.6% on one route, and 9.1% on another route.
Download or read book Review of the 21st Century Truck Partnership written by National Research Council and published by National Academies Press. This book was released on 2008-10-19 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 21st Century Truck Partnership (21CTP), a cooperative research and development partnership formed by four federal agencies with 15 industrial partners, was launched in the year 2000 with high hopes that it would dramatically advance the technologies used in trucks and buses, yielding a cleaner, safer, more efficient generation of vehicles. Review of the 21st Century Truck Partnership critically examines and comments on the overall adequacy and balance of the 21CTP. The book reviews how well the program has accomplished its goals, evaluates progress in the program, and makes recommendations to improve the likelihood of the Partnership meeting its goals. Key recommendations of the book include that the 21CTP should be continued, but the future program should be revised and better balanced. A clearer goal setting strategy should be developed, and the goals should be clearly stated in measurable engineering terms and reviewed periodically so as to be based on the available funds.
Download or read book Transitions to Alternative Vehicles and Fuels written by National Research Council and published by National Academies Press. This book was released on 2013-04-14 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a century, almost all light-duty vehicles (LDVs) have been powered by internal combustion engines operating on petroleum fuels. Energy security concerns about petroleum imports and the effect of greenhouse gas (GHG) emissions on global climate are driving interest in alternatives. Transitions to Alternative Vehicles and Fuels assesses the potential for reducing petroleum consumption and GHG emissions by 80 percent across the U.S. LDV fleet by 2050, relative to 2005. This report examines the current capability and estimated future performance and costs for each vehicle type and non-petroleum-based fuel technology as options that could significantly contribute to these goals. By analyzing scenarios that combine various fuel and vehicle pathways, the report also identifies barriers to implementation of these technologies and suggests policies to achieve the desired reductions. Several scenarios are promising, but strong, and effective policies such as research and development, subsidies, energy taxes, or regulations will be necessary to overcome barriers, such as cost and consumer choice.
Download or read book Central Tire Inflation CTI System Literature and Market Searches written by and published by . This book was released on 1984 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cost Effectiveness and Deployment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2015-09-28 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: The light-duty vehicle fleet is expected to undergo substantial technological changes over the next several decades. New powertrain designs, alternative fuels, advanced materials and significant changes to the vehicle body are being driven by increasingly stringent fuel economy and greenhouse gas emission standards. By the end of the next decade, cars and light-duty trucks will be more fuel efficient, weigh less, emit less air pollutants, have more safety features, and will be more expensive to purchase relative to current vehicles. Though the gasoline-powered spark ignition engine will continue to be the dominant powertrain configuration even through 2030, such vehicles will be equipped with advanced technologies, materials, electronics and controls, and aerodynamics. And by 2030, the deployment of alternative methods to propel and fuel vehicles and alternative modes of transportation, including autonomous vehicles, will be well underway. What are these new technologies - how will they work, and will some technologies be more effective than others? Written to inform The United States Department of Transportation's National Highway Traffic Safety Administration (NHTSA) and Environmental Protection Agency (EPA) Corporate Average Fuel Economy (CAFE) and greenhouse gas (GHG) emission standards, this new report from the National Research Council is a technical evaluation of costs, benefits, and implementation issues of fuel reduction technologies for next-generation light-duty vehicles. Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. This report describes these promising technologies and makes recommendations for their inclusion on the list of technologies applicable for the 2017-2025 CAFE standards.
Download or read book Central Tire Inflation Systems Managing the Vehicle to Surface Interface written by and published by . This book was released on 1994 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
