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A Review of Solid Lubrication Technology

Midwest Research Institute-Mahlon E. Campbell
Published 1971-02-01 by SAE International in United States
The function of this paper is a review of the solid lubricant technology. Emphasis has been placed on lubricating solids, bonded films including binder materials, and developments in the self-lubricating materials including plastic and metal-bonded composites. Typical uses of solid lubricants are cited. Design guidelines for use of bonded films and self-lubricating composites are outlined.
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A Modular Cab for Farm Tractors

Crenlo, Inc.-W. Ronald McKibben
White Farm Equipment-Ronald D. Pitsch
Published 1971-02-01 by SAE International in United States
This paper discusses the design of the modular cab for the White Farm A4T tractor. The modular concept creates new problems in cab and tractor design and has a significant effect on tractor assembly line operations. The cab is particularly quiet and well sealed. Data regarding operator noise levels are presented with comparisons shown to similar products and recent legislative activities in the area of noise control. Operator environmental control is improved with the modular concept, and performance data and specifications are discussed. The end product is the result of a close cooperative effort by the tractor manufacturer and cab manufacturer brought forth by the need to provide the customer with a greatly improved cab.
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Moldboard Plow Design and Use for Higher Horsepower-Lower Weight Tractors

Agricultural Research Service, U. S. Department of Agriculture-Carl A. Reaves
Published 1971-02-01 by SAE International in United States
A discussion is presented on the performance requirements of moldboard plows. Advantages and disadvantages of designing for higher speeds of operation versus increasing implement width are given. Effects of plow shape and speed of operation on soil manipulation and force requirements are discussed.
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Design-by-Computer

Vickers Div., Sperry Rand Corp.-Arthur H. Delmege
Published 1971-02-01 by SAE International in United States
Design-by-computer is a viable design technique for general engineering design due to the availability of large-scale digital computers for engineering applications.In the design-by-computer concept, the designer inputs the specified operating characteristics for the component or system to be designed, and the program will output the dimensions of the design parameters required to meet these specifications.Hundreds of designs can be computed in minutes. This frees the engineer to improve his design methodology, analysis, and engineering decision-making criteria. This is used to improve the design synthesis process of the design-by-computer digital program.
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Engine Fuel Rate to Computed In-Vehicle Horsepower

Caterpillar Tractor Co.-A. Byron Niles, William J. Gardner
Published 1971-02-01 by SAE International in United States
This paper describes an accurate instrument system developed to determine in-vehicle horsepower. Rapid measurement of fuel rate used in conjunction with a computer to factor in the brake specific consumption and other variables produces an almost instantaneous display of developed horsepower.
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Unified System for Compactor Performance Specification

Dept. of Civil Engineering, State University of New York at Buffalo-E. T. Selig
Published 1971-02-01 by SAE International in United States
A comparison of expected performance of the vast number of different compactors available today cannot be made using data normally given on equipment specification sheets. A unified system is presented for combining the essential information into expressions for compactive effort, productivity, and power requirements. This approach is practical and may be used now by designers or users of the compactors, but further development of the system is also encouraged.
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Monitor Control and Its Application to the Grain Harvesting Machine

Farm Equipment Div., International Harvester Co.-Frank H. Gardner
Published 1971-02-01 by SAE International in United States
Monitoring is applied to the combine in two ways: engine and process functions. Engine functions are monitored by two modes of warning: audible for the critical and visual for the other important functions.Process functions are the critical harvesting speeds or volume flow. The operator is instantaneously warned by a function light and a warning wand if any of his monitored functions drop below the critical harvesting speeds.
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Effects of Transmission Fluid on Clutch Performance

Detroit Diesel Allison Division General Motors-C. W. Schade
Published 1971-02-01 by SAE International in United States
Of the many automatic transmission components which are sensitive to the effects of the transmission fluid, the ones which possibly have the most complex interrelationship with the fluid are the clutches. Oil properties affect clutch performance, and clutch plate characteristics affect oil function.Several experiments designed to study fluid flow through a rotating clutch were conducted by the author. Fluid flow between a rotating grooved plate and a glass reaction plate was photographed. Viscous drag as a function of groove pattern was developed. And interface temperature as a function of flow was determined at various energy levels.From this information a general discussion is presented which shows that the static and dynamic coefficients of clutch friction can be altered by changing the fluid composition. From this, in turn, the main point is made-that is, as fluid properties must be considered in the design of automatic transmissions and their components, the transmission user must follow the manufacturer's fluid recommendation if optimum transmission performance is to be achieved.
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Electronic Overload Indicating System for Mobile Construction Cranes

Controls Div., Eaton Corp.-William H. Jones
Published 1971-02-01 by SAE International in United States
An electronic, fully automatic overload indicating system was developed and successfully applied to mobile construction type cranes. A mini-computer monitors the signals from boom load and boom angle transducers. It computes the resultant percentage of rated lifting capacity based on the crane's rating chart. A plug-in program card furnishes the safe operating limits from the rating chart.
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Hydraulic Fluid Requirements - Construction Equipment

Koehring Div., Koehring Co.-Milton E. Wege
Published 1971-02-01 by SAE International in United States
Through the years, the progress of the hydraulic system is increasing. Pump speeds and output volume increases, have increased the total oil capacity. As a result of this, the selection of an appropriate oil has become an important factor in the hydraulic system operation.This paper will endeavor to provide information to assist the hydraulic system designer in the selection of a hydraulic fluid, that is compatible with the various components in the hydraulic system.
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