Hydraulic transmission fluid

No information concerning the specific production volumes of mineral oil hydraulic fluids was found in the available literature. The National Petroleum Refiners Association (NPRA 1992) reported that 192 million gallons of automatic transmission fluids, universal tractor hydraulic/transmission fluids, energy/ shock absorber and power steering fluids, and other automotive hydraulic fluids were sold in 1991. Virtually all of these fluids are mineral oil hydraulic fluids (Chrisope and Landry 1993 Papay 1989, 1991 Wills 1980). This volume is lower than sales volumes for 1990 (216 million gallons), 1989 (221 million... 

C. Cleary and co-workers. Hydraulic characteristics of ice slurry and chilled waterflow. Advanced Energy Transmission Fluids—Einal Report of Research, lEA District Heating, 1990. 

Fluids for Hydraulic Transmissions-Fire Resistant Fluids—Classifications, Provisional Recommendation RP7.7H, European Oil HydrauHc and Pneumatic Committee, 1976. 

C. L. Middleton, R. R. McCoy, and J. M. Stanck, Modem Hydraulic and Hydrostatic Transmission Fluids, Automotive Engineering Congress, SAE, Detroit, Mich., 1970. 

Motors have many uses in fluid power systems. In hydraulic power drives, pumps and motors are combined with suitable lines and valves to form hydraulic transmissions. The pump commonly referred to as the A-end is driven by some outside source, such as an... 

Mineral Oil Hydraulic Fluids. Lipoid pneumonia with marked interstitial pneumonitis and pulmonary fibrosis was observed in a child accidentally ingesting a lethal dose of automotive transmission fluid (Perrot and Palmer 1992). Although the exact composition of the hydraulic fluid was not reported, it is assumed to be a mineral oil hydraulic fluid because automotive transmission fluids typically contain... 

Mineral Oil Hydraulic Fluids. There is a paucity of data on respiratory effects following inhalation, oral, or dermal exposure to mineral oil hydraulic fluids. The only available information for humans comes from a case report of a child ingesting a lethal dose of an automotive transmission fluid, which was most likely a mineral oil hydraulic fluid. Lipoid pneumonia with marked fibrosis was observed (Perrot and Palmer... 

Mineral Oil Hydraulic Fluids. There is limited information on the toxicity of mineral oil hydraulic fluids in humans. A single case report of a child accidentally ingesting a single dose of automotive transmission fluid provides limited information on death and systemic effects. A case-control study provides some information on the carcinogenicity of mineral oil hydraulic fluids. The study population was exposed via inhalation and dermal routes. An occupational exposure study provides information on neurotoxicity following chronic dermal exposure. Information on the toxicity of mineral oil hydraulic fluids is limited to a series of inhalation, oral, and dermal acute-duration exposures. These studies provide information on death, systemic effects, and neurotoxicity by inhalation, oral, and dermal routes, and immunotoxicity following dermal exposure. 

Mineral Oil Hydraulic Fluids. There is limited information on the acute toxicity of mineral oil hydraulic fluids to humans. A single case report of a child accidentally ingesting automotive transmission fluid reported respiratory and gastrointestinal effects (Perrot and Palmer 1992). 

Mineral Oil Hydraulic Fluids. No information identifying the major components of mineral oil or water-in-oil hydraulic fluids was located in the available literature, nor was any information located that described how the emulsifiers and other components in water-in-oil emulsion hydraulic fluids alter the environmental properties of the mineral oils contained in them. The carbon number range present in mineral oil hydraulic fluids probably is from C15 to C50 (IARC 1984 Shubkin 1993 Wills 1980). If automatic transmission fluids are typical of the mineral oil content in a hydraulic fluid, then mineral oil hydraulic fluids contain -90% mineral oil (Abdul et al. 1990 Papay 1989,1991). Therefore, the transport and partitioning of these hydrocarbons will largely account for the environmental behavior of mineral oil hydraulic fluids. Typical transport and partitioning information for hydrocarbons in this range is presented below this information is indicative of the transport and partitioning of mineral oils present in hydraulic fluids. 

Industrial oils lubricants, e.g., hydraulic oils, motor gear oils, transmission fluids and metalworking fluids. 

The lower cost dialkyl benzenes are used in a wide variety of industrial and metalworking products. In particular, their sulphur-free chemistry has led to extensive use as rolling and drawing oils for copper. The synthesised alkyl benzenes, even when their chemistry is optimised, generally exhibit poorer properties than PAOs. However, their excellent solvency and low pour point make them suitable for lubricants designed for extremely low-temperature operations in arctic greases, gear oils, hydraulic and power transmission fluids. 

The severity of different lubricant applications covers a wide shear stability range. Figure 5.8 shows that engine oils are the mildest application, followed by automatic transmission fluids, hydraulic fluids and rear axle lubricants [63]. Thus, matching shear stability requirements of the application with the selection of VI improver is a key formulation consideration. 

Over the years, detergents have found equally important usage in many other types of lubricants, including gear oils, farm tractor hydraulic fluids, automatic transmission fluids and industrial oils. The performance properties that detergents impart to these lubricating fluids include rust and corrosion prevention, improvement in lubricant elastomeric seal compatibility, enhancement of sludge control under oxidative conditions and improvement of wet clutch and wet brake friction level and stability. 

The torque converter is a type of fluid coupling device that hydraulically connects the engine to the transmission—analogous to a mechanical clutch. Used in conjunction with the torque converter is a stator, which essentially assists at low engine speeds, thus increasing acceleration. The vanes inside the converter alter the shape of the fluid path into the stator. The stator captures the kinetic energy of the transmission to enhance torque multiplication. This process will not only increase heat, but also increase shear of the transmission fluid. In addition to torque conversion, at every shift event, clutch packs generate heat, which must be carried away by the transmission fluid. 

Automatic transmission fluids suitable for automotive hydraulic, power steering and some manual transmission applications. 

Etbylflo. [Ethyl] Polyalphaolefins synthetic lubricants for automotive cr -case oils, hydraulic fluids, gear and transmission fluids, comptesscv lubricants, metalworking fluids, personal care items. 

Chem. Descrip. Tolyltriazole (40%) in diethylene glycol Uses Corrosion inhibitor tor aq. and hydrocarbon systems, hydraulic fluids, lubricants, metalworking fluids, inks, compressor fluids, flooring, di-reot oopper treatments, transmission fluids, and paints Properties Deep yei. to amber clear sol n. flash pt. 290 F Cobratec TT-50-S [PMC Spec.]... 

Chem. Descrip. Glyceryl oleate CAS 37220-82-9 EINECS/ELINCS 203-827-7 Uses Emulsifier for cosmetics and industrial applies. in mold release agents anti-icing fuel additive rust preventive vehicle for agric. insecticides lubricant in syn. fiber spin finishes (textiles) friction modifier for engine, hydraulic, and transmission fluids Regulatory EPA exempt... 

The symbol of solenoid valve is related to the hydraulic system. It means the status of transmission fluid flowing through the solenoid valve when the power supply is on or off. 

Hydraulic power was first based on water. The development of the oil industry meant the ready availability of power transmission fluids with improved characteristics compared to water. Oil has better lubrication ability and increased viscosity which allowed 5 much higher contact loads to be achieved in the machinery as well as lower leakage rates. 

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