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Technical Paper

Yielding Strengh Analysis for Self Supported Pressure Vessels

The hazardous bulk chemical liquid cargo transportation is usually made through highways, using special automotive devices, named semitrailer tank, a kind of mobile tank specially developed to perform this task, manufactured with many types of steel, selected according to the chemical characteristics of the product to be transported. Equipment sizing is made based on specific standards which include specified formulas, loading, and safety factors representing the design criteria of this type of device. Despite of the detailed design criteria for semitrailer tank, it has been observed failure of some pieces of equipment during operation, in a shorter effective life than that one considered in the design phase itself. Considering a detailed study of the stress distribution in this type of equipment, this paper shows a verification of the possibility of yielding failure in the semitrailer tank structure.
Technical Paper

Worldclass Product Development Overview

This paper will discuss Concurrent Engineering as an emerging product development methodology. Specific emphasis will be placed on some of the key tools and considerations necessary for the success of Concurrent Engineering. In particular, the paper will discuss strategic product planning driven by customer requirements and how the product development effort will support the strategic product plan.
Technical Paper

Work Solenoids-Environmental and Design Considerations for Earthmoving Equipment Applications

Work solenoids are widely used in household appliances. The environment and design of this type application does not lead to solenoids for the earthmoving industry. This paper presents the environmental effects to be considered when designing a solenoid for the earthmoving industry. It further explains the need for, and type of, test necessary to validate the design. Finally a review of production quality procedures, necessary to insure reliable production parts is discussed.
Technical Paper

Winterization of Commercial Vehicles to -50 F

The development trend in construction machinery has been to produce equipment having a high level of reliability. The dollar loss that occurs when a major piece of equipment breaks down on the job is sufficiently great to justify the cost of providing reliable operation. In the development of the North the need for increased reliability is greater than ever. In extreme low temperature conditions as found on the NORTH SLOPE operation in Alaska, the harshness of the environment places additional stress both on the equipment and the operators. The development of winterization kits for construction and heavy engineering equipment to date has been slow, probably because of a comparatively small market and because the work could be postponed or accomplished by protecting the equipment and operator by temporary means to meet the purpose. The results have not been economical or as efficient as desired but efficient enough to be acceptable.
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Wiley SAE MOBILUS® eBook Package

Committed to being the primary source for aerospace and ground vehicle engineering resources, SAE International has added the full compilation of our Wiley eBook collections to the SAE MOBILUS® technical resource platform. Purchasable as an annual subscription and containing the titles from the Wiley Aerospace Collection, the Wiley Automotive Collection, the Wiley Computer Systems Collection, and the Wiley Cyber Security Collection.
SAE MOBILUS Subscription

Wiley Cyber Security Collection Add-On

As an annual subscription, the Wiley Cyber Security Collection Add-On is available for purchase along with one or both of the following: Wiley Aerospace Collection Wiley Automotive Collection The titles from the Wiley Cyber Security Collection are included in the SAE MOBILUS® eBook Package. Titles: Network Forensics Penetration Testing Essentials Security in Fixed and Wireless Networks, 2nd Edition The Network Security Test Lab: A Step-by-Step Guide Risk Centric Threat Modeling: Process for Attack Simulation and Threat Analysis Applied Cryptography: Protocols, Algorithms and Source Code in C, 20th Anniversary Edition Computer Security Handbook, Set, 6th Edition Threat Modeling: Designing for Security Other available Wiley collections: Wiley SAE MOBILUS eBook Package Wiley Aerospace Collection Wiley Automotive Collection Wiley Computer Systems Collection Add-On (purchasable with the Wiley Aerospace Collection and/or the Wiley Automotive Collection)
SAE MOBILUS Subscription

Wiley Automotive Collection

Purchasable as an annual subscription, the Wiley Automotive Collection contains 20 eBook titles and focuses on a wide range of categories, including engines, transmission, chassis, body, electrical, safety, and manufacturing. Titles covering new and emerging topics such as battery technology and electric and hybrid vehicles are included as well, making the series an essential addition to any institution’s automotive resources.
Technical Paper

Web-based Engineering for Product Development and Business Support

Nowadays, developing web (World Wide Web) engineering is considered to be a top priority task in many companies. A corporate web information center with broad coverage to support a company's worldwide engineering activities can make the product development and customer support more efficient. First, the archived, readily available product information, knowledge database, and user friendly engineering tools can ease up the more ever demanding engineering jobs. Second, the convenient information storage, retrieval systems and hyperlinks on the web should ensure effective communications among engineers, customers, and suppliers. However, without in-depth planning, the full benefits of web engineering cannot be realized. To be effective, other companion engineering programs must also be instated. This paper reviews the experience we have gained in utilizing web engineering for product development and customer support.
Technical Paper

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

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.
Technical Paper

Warehouse-Stretching Gas Fork Lift Truck

This paper covers the development and features of a unique narrow aisle gas fork lift truck. It shows how three individually selective types of hydraulic circuits are utilized for a hydrostatic drive to power a rotatable front end - load assembly in a vehicle which is a new approach to narrow aisle stacking. The result is a lift truck which uses narrow aisles for storing material and retains the speed, utility, and endurance of conventional equipment.
Technical Paper

Vibrational Loading of Devices of Automatic Equipment Systems

Electronics are very sensitive to vibration and it is mandatory that the design engineer be familiar with the environment in which they will be used. This paper describes the vibrational environment of a tractor. A full scale tractor cab was outfitted with sensors and vibrated at various frequencies. The results are supported by theoretical calculations.
Technical Paper

Verification of Heavy Truck EBS and ABS Using MatrixX Hardware in the Loop Tools

The development of advanced ABS, EBS, and vehicle dynamics control systems requires significant resources and testing. Even in the most controlled environment, on-track vehicle tests are not repeatable. A heavy vehicle model combined with pneumatic brake hardware connected to actual brake system controllers creates a powerful engineering tool. This tool is useful for control system development, electro-mechanical actuator development, and brake system development. An existing heavy vehicle model is modified to interact with the realtime simulation hardware and the pneumatic brake system hardware. Data from several hardware in the loop simulations are presented.
Technical Paper

Vehicle On-Board Diagnostics Added Values

Today's vehicles have more and more electronics, and this leads to a greater wealth of information available on a vehicle's communication network. This paper will address the added value of having access to this information. Whether you are the development engineer, the dealership mechanic or the end-user, the information available to the different individuals has become indispensable. Rapid diagnostics of events and faults, automatic correctional interaction of vehicle equipment to compensate failures, as well as preventive maintenance alerts of specific vehicle components are all actions that are helping the various individuals throughout the vehicle's existence. These actions are helping to save time, increase diagnostics accuracy and make the vehicles generally safer. This paper will provide details about a number of events and probable scenarios to demonstrate the added value of having access to the vehicle's communication network.
Technical Paper

Vehicle Mission Simulation, 1970

Vehicle mission simulation is one component of a system designed to optimize selection and operation of on-highway vehicles. The focus of vehicle mission simulation is on equipment specification. It can predict the physical and financial performance of equipment alternatives, identify opportunities and correct problems before a truck is purchased.
Technical Paper

Vehicle Dynamics: A New Way of Understanding and Optimizing Vehicle Performance

Evaluation of vehicle performance is one of the most important phases of the new vehicle development. Start Ability and Top Speed are factors that are noticed by users, therefore are very important to the final product. Vehicle performance evaluation has been largely benefited from the use of simulation tools. In fact, MAN Latin America (ML) employs simulation programs to evaluate the performance of its vehicles (trucks and buses) achieving good results. However, those programs are normally “closed codes” which makes difficult the physical comprehension of results. Altogether, this article presents Vehicle Dynamics, a macro developed by ML engineering team. The aim of this macro is the automatic calculation of Start Ability, Grade Ability, Top Speed, among other performance parameters.
Technical Paper

Vehicle Diagnostics - The Other Approach

The need for expert systems in the Heavy Truck and Bus Industry is rapidly approaching a critical point in time. This time reference is the revised emission standards and requirements for heavy duty diesels. This need is related to the influx of electronically controlled engines and their companion the electronically controlled transmission as well as the present shortage of skilled mechanics. This paper discusses the conceptual approach and reasons that expert systems are well suited as a diagnostic aid for vehicular repair. This paper also discusses the implementation of a commercially available expert system for the diagnosis of class 7 and 8 vehicles. The body of this paper will be divided into four discussions. First, applicability of AI/KB programs used for vehicle diagnostics. Second, the use of expert systems to diagnose electronically controlled power modules and their related interactivities with the vehicle.
Technical Paper

Validation of an Organic Rankine Cycle Simulation Tool against European Stationary Cycle Test Modes

The development of experimental ORC systems is an extremely complex, time consuming and costly task. Running a range of experiments on a number of different component configurations may be prohibitively expensive and subject to equipment issues and failures. Yet ORC systems offer significant potential for automotive manufacturers to improve vehicle efficiency, reduce fuel consumption and vehicle emissions; the technology is particularly relevant for those involved in the design and/or manufacture of heavy duty trucks. This paper is focused on the validation of a computational ORC system simulation tool against a number of SAE published test results based on the European Stationary Cycle. Such studies on industry standard systems are essential in order to help promote confidence in a virtual prototype approach.
Technical Paper

VADSIM ToolBox: Gear/Bearing Loads

This paper presents a web-based tool to calculate gear and bearing forces for a front or rear axle. Force equilibrium is ensured in both gear and bearing load calculations for front and rear axles in both drive and coast modes.
Technical Paper

Utilizing Rotary Tillers with Higher Horsepower Tractors

The special advantages of rotary tillage tools make them compatible with many currently popular cultural practices. Multipowered tillage tools are uniquely suited for utilizing high horsepower-low weight power units. Factors involved in the power requirements of rotary tools are reviewed, and the need for a study of high-speed soil dynamic parameters is presented.
Technical Paper

Utility Vehicles “Standardization/Modularity/Flexibility”

To meet the demands of the future with the competitive environment that Fleet Managers are faced with, a more comprehensive and global strategy for the Utility Fleet Industry will be needed. Not only will Fleet Managers have to standardize the vehicles they have in their own individual fleets to gain an upper hand on soaring costs but they will also need to pool their ideas and develop vehicle chassis and equipment standards that can be used on a global basis. Only then will each Fleet Manager be able to reap the benefits of lower vehicle costs possible from industry wide standardization.