Automotive shock absorbers

Position/Displacement sensors can be used in active damping systems of industrial washing machines in order to compensate for vibrations coming from unbalanced drums /laundry. These can work much like a simple automotive shock absorber. 

Automotive shock absorbers based on 1,5-NDI and ethylene glycol adipates (Vulkollan) are used in the global automotive markets (total consumption in 1998 was 10.2 kt/a). Systems based on MDI are also used. 

Giacomin J., Neural network simulation of an automotive shock absorber. Engng Applic. Artif. Intell., Vol 4., No. 1, 59-64 (1991)... 

Surace C., Worden K. and Tomlinson G.R., On the nonlinear characteristics of automotive shock absorbers. Proc. of the I.Mech.E., Part D - J. of Automobile Engng. (1992)... 

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... 

We take advantage of the shock absorbing characteristics of thermoplastic urethane rubbers in automotive, motorcycle, and bicycle suspensions and power transmission systems. Industrial shock absorbing applications include buffers for elevators and cranes. 

Patent Number EP 1075933 A2 20010214 MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN, PRODUCTION PROCESS THEREOF, AND CONTAINER, SHOCK-ABSORBING MATERIAL FOR AUTOMOBILE AND AUTOMOTIVE MEMBER FORMED OF THE MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN Kogure N Gokuraku H JSPCorp. 

Automotive accessories (hatchback door closers, hydraulic shock absorbers, headlamp lenses, trim pieces, etc.)... 

Applications of Microcelluiar Elastomers. Microcellular elastomers are widely used for various shock absorbing materials in automotive applications such as bumper cores, shock-absorbing elements in vehicle-suspension elements, machines, electrical equipment, cameras, precision machines, shoe soles and heels, and sports shoes. 

Applications. Major applications of semi-rigid foams are in the area of automotive parts, especially in the interior of vehicles, for use as shock-absorbing pads, e.g., instrument panels, console-box lids, door trims, head restraints, arm rests, and sun visors. 

Carbon fiber lowers creep, increases flex and compressive modulus, and raises hardness. These changes can be achieved with glass but less carbon fiber can achieve the same effects. Carbon fiber is inert to both hydrofluoric acid and strong bases which react with glass. Coefficient of thermal expansion is lowered and thermal conductivity is higher for compounds of carbon fiber PTFE. Carbon fiber parts are lubricated with water, that is, wear rate decreases, making them ideal for automotive applications in shock absorbers and water pumps. 

Polyurethane/SiO Automotive seat application Shock absorbing application... 

Uses of Polyurethane Vulcanizates. Polyurethane elastomers are used in the automotive and engineered products industries for seals, shock absorbers, power-transmission flexible joints, and suspension and support members. Polyurethane vulcanizates are also used in solid tires, elastic thread, footwear, and others. Problems with hydrolytic stahihty and resistance to heat must be considered when one uses these vulcanizates. 

Magnetorheological fluid production levels in 2005 are of the order of hundreds of metric tons per year (or tens of thousands of liters) such that commercial applications on several automotive platforms are supported. A factor of ten or more increase in volume over the next decade is anticipated. It is estimated that there are presently more than one hundred thousand MR dampers, shock absorbers, brakes and clutches in use worldwide. This number is expected to rise into the millions as more automotive platforms adopt smart MR fluid suspensions and clutch systems. 

Fig. 6.85. Control system architecture for automotive MR fluid shock absorbers...

Actual ER damping devices have been designed for meeting practical needs such as shock absorbers [16], full-car suspension system [17,18], automotive engine mounts [1], bearing damping with an ER fluid [19], etc. A concentric cylinder shock absorber using the Bayer Rheobay 3565 ER... 

A Figure 22.45 Carbon composites are used extensively in aerospace and automotive applications, and in sporting goods. This high-performance (and high-priced ) off-road bike has a carbon-fiber-composite frame, which makes it very lightweight and helps it absorb road shocks. 

---