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1984-01-01
Standard
ARP899B
This ARP establishes the basic test and design requirements for permanently attached tube fittings for use in aerospace fluid systems. Definitions of fitting and related terms are included in 6.3. This document recommends the tooling envelope, design criteria, and test requirements for tube fittings attached to tubing by methods which are usually considered to be permanent (brazing, welding, swaging, shrink fit, etc.).
1984-01-01
Standard
AS3397
No scope available.
1984-01-01
Technical Paper
845091
F. Grobuschek
Highly loaded bearings for vehicle engines are executed presently as tri-metal bearings. This is caused by the conflicting requirements which force to work-sharing. The increased bearing loads, caused by the intention to reduce fuel consumption and to increase engine output lead to exceeding the limits of such bearing designs. Increased wear and also increased failure-probability are the consequences. In foresight of this development the consequences were drawn in new materials. But these appear to be insufficient for the engine-development of the future. In view of these facts a new approach of work-sharing in the running surface itself was considered. Thereby the boundary friction wear was drastically reduced and also other properties could be improved. The bearing design MIBA-RILLENLAGER resulting from these considerations was successful in rig test and in practical service as solution for highly loaded bearing applications.
1984-01-01
Technical Paper
845123
S. Parizot
The research offices and the automobile systems offices which became highly competitive in the areas of computerized design, from design and manufacturing of defined parts beginning with surface areas, have now discovered potentials for informational systems suggesting creative design and production control. In the same fashion, the power of the calculation units and the increasing performances of graphics, at constantly diminishing costs, have allowed planning for use of more complex computers. Thus, the systems designers of CFAO were able to set up third generation products: after the "2 dimensions" then the "3 dimensions" surface, the "3 dimension" volumetric integrating complex left sides has been put into use.
1984-01-01
Standard
AS1710A
This SAE Aerospace Standard (AS) defines the requirements for a threaded flexible coupling assembly, which utilizes ferrules or machined tube end fittings to join tubing and components in aircraft fuel and fuel vent or other systems. This coupling assembly is designed for use from -65 to +200 °F and at 125 psig peak working pressure, and the coupling assembly may be used in other fluid systems when requirements are within the limits.
1984-01-01
Standard
J30_198401
This SAE standard covers fuel, oil, or emission hose for use in coupled and uncoupled applications, for use with gasoline, oil, diesel fuel, lubrication oil, or the vapors present in either the fuel system or in the crankcase of internal combustion engines in mobile or stationary applications. This standard covers the hose portion only. If assembly / coupling is required, that is to be agreed to between the customer and assembler, along with the specific requirements.
1983-11-07
Technical Paper
831789
Masahiko Kuwano, Kazunori Endoh, Isao Suzuki
The retarders which are broadly used in Japan at the present time are exhaust brakes of exhaust pipe open/close type. The history of employment of these retarders, which are now adopted not only in heavy trucks but also in medium and light trucks, is explained in this paper. The while, observing the process of improvement of components and of the control system as well as the braking effects of exhaust brakes, the reasons for such a growth are examined. As a recent technical trend the purpose of use of exhaust pipe open/close valves are diversified to acceleration of engine warmup besides retarding effects to the vehicle. And it is also necessary today to correspond to engines with turbochargers. Therefore, high temperature resistance improvement of working durability and so forth can be raised as technical subjects to be solved in the future, and these subjects are explained in this paper.
1983-11-07
Technical Paper
831788
P.S. Fancher, R. W. Radlinski
Data from driver-controlled vehicle tests are presented to demonstrate the nature of the control difficulties that may result from the use of retarders when the road surface is slippery. Findings from a computer simulation suitable for detailed study of the directional dynamics of retarder-equipped vehicles are described. A simplified analytical method is provided for estimating the influences of lateral acceleration (turning radius at speed), retarder torque, tire/road friction, and vehicle loading on the bounds of controllable vehicle operation.
1983-11-07
Technical Paper
831780
R. B. Price, Z. S. Meistrick
A new compression engine brake has been developed for the Cummins L10 engine. High retarding power was required in order to compensate for the loss of natural retarding ability of modern heavy duty trucks resulting from fuel-saving devices. A computer model was used to select the most feasible design. The new concept utilizes one exhaust valve per cylinder with a valve reset mechanism. Prototype hardware was laboratory and field tested. Correlation between the test results and computer simulation is exhibited. A relationship between the Model 404 performance and the vehicle retarding capability is shown. This new engine brake model is one of the most efficient in terms of B.M.E.P. that Jacobs has developed.
1983-11-01
Standard
AIR3260
This information report presents recommendations on part number marking which provides for the maximum identification on bolts and nuts while ensuring adequate readability.
1983-11-01
Standard
MAP1753
To establish recommended hole sizes for use with protruding head metric threaded fasteners primarily used on propulsion equipment and provide the recommended positional tolerance for use with these holes.
1983-11-01
Standard
J1703_198311
This SAE Standard covers motor vehicle brake fluids of the nonpetroleum type for use in the braking system of any motor vehicle such as a passenger car, truck, bus, or trailer. These fluids are not intended for use under arctic conditions. These fluids are designed for use in braking systems fitted with rubber cups and seals made from styrene-butadiene rubber (SBR), or a terpolymer of ethylene, propylene, and a diene (EPDM).
1983-11-01
Standard
MA1696
This standard specifies the characteristic of the MJB metric series of buttress screw threads based on 7°/45° form, with width of truncation same as MJ screw thread profile, and with a controlled radiused root in the external thread. This standard establishes the basic triangular profile for the MJB thread form, the design profiles, standard pitches, tolerance classes, formulae for tolerances and dimensions, tolerance tables, and a system of designations. Because of the specialized application for buttress threads, no preferred diameter-pitch series have been established for this standard and each application will require use of the thread formulae for dimensions and related tolerances given herein for deriving the thread dimensional requirements.
1983-10-31
Technical Paper
831690
N. Van Os, C. A. Garcia-Franco, W. G. Gottenberg, H. A. Tripp
This paper presents experimental measurements of oil film thickness for a statically loaded journal bearing with single-grade, polymer-free engine oils and SAE 10W40 polymer-containing engine oils under hydrodynamic lubrication conditions. Measured minimum film thickness was correlated with a bearing Sommerfeld number based on actual high shear rate viscosities with no significant difference being observed between polymer-free and polymer-containing oils. However, a significant decrease in bearing attitude angle was observed for a number of polymer-containing oils compared with polymer-free oils at the same Sommerfeld number. Using measured values for eccentricity, attitude angle and high shear rate viscosities, the total friction couple was calculated at various Sommerfeld numbers with no difference being found between polymer-containing and polymer-free oils.
1983-10-31
Technical Paper
831689
J. A. Spearot, C. K. Murphy, R. C. Rosenberg
The minimum oil-film thickness in the front main bearing of a 3.8 L, V-6 engine was measured at 3 000 r/min, and 140 N·m using an electrical resistance technique. For a series of seven Newtonian, single-grade oils, film thickness correlated with oil viscosity measured either in a kinematic or in a high-shear-rate viscometer. For a series of fifteen polymer-containing, non-Newtonian, multigrade oils, however, no single measure of viscosity adequately correlated with film thickness for all of the oils. By eliminating four multigrade oils from the combined single and multigrade data sets, it was possible to correlate film thickness to the viscosity (of the remaining multigrade and Newtonian oils) measured at 150°C and 5 × 105 s−1, conditions which are believed to be representative of temperatures and shear rates in bearing oil films. Possible explanations for the lack of correlation with the entire set of twenty-two oils are discussed.
1983-10-01
Standard
J1134_198310
This SAE Recommended Practice establishes a single bolt pattern for the No. 1 clutch housing (see Figure 1) and the No. 2 clutch housing (see Figure 2). These four bolt patterns are designated to give commonality of mounting brackets in existing frame rails. The 420 mm (16.5 in) span, pad face to pad face, allows the ease of installation in existing frame rail widths. This is also the minimum spacing which will accommodate commonly used clutches.
1983-10-01
Standard
AMS6372F
This specification covers an aircraft-quality, low-alloy steel in the form of mechanical tubing. This tubing has been used typically for parts, 0.75 inch (19 mm) and under in section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 40 HRC when properly hardened and tempered and for parts of greater thickness but requiring proportionately lower hardness, but usage is not limited to such applications.
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