Transportation

Crankcase Ventilation And Emissions

Meeting the Challenge for Better Control of Crankcase Ventilation and Emissions in Combustion Engines Current and pending environmental legislation has placed stringent demands on crankcase breather systems for internal combustion engines. Reducing such crankcase-emission carryover is not just a federal mandate with some types of engines, crankcase ventilation is a key consumer concern. Metal Textiles has responded to the need for better control over such emissions with prolonged-life, knitted wire mesh breather elements and assemblies. Metal Textiles products help dramatically reduce the escape of crankcase emissions from such engine sources as: Condensation of crankcase aerosol Mechanical shearing from valve springs and other mechanical parts Lubricating oil that exits the engine through the crankcase breather tube or assembly Metal Textiles designed and manufactured Breather Elements and Assemblies provide long-lasting performance in reducing crankcase emissions as well as oil consumption and oil pooling on external engine and vehicle parts— while protecting air-intake products in closed-crankcase ventilation (CCV) systems. Engine manufacturers have also found that Metal Textiles Breather Elements and Assemblies provide a greater degree of market differentiation among an increasingly environmentally conscious buying public—helping to improve customer loyalty for specific engine brands.   PRODUCT BENEFITS Long service life-four times more durable than competing products Cost-effective-can withstand temperatures between -45°C to 650°C, depending upon material selection Can vary element density and surface area to solve the most difficult separation problems Can accommodate any available engine space Easy to install in existing or new cavities or housings Ability to combine monofilament or multifilament material into one breather element Element can be die formed, layered, or spiral wound Superior Design and Manufacturing for Meeting Custom Emission-Control Requirements Better, more cost-effective solutions for reducing crankcase emissions Four decades of experience in designing and manufacturing crankcase-emission filtration systems have made Metal Textiles the supplier of choice for all types of consumer- and commercial-vehicle applications, both on- and off-highway. Due to our unique ability to manufacture Breather Elements and Assemblies from a wide range of ferrous and nonferrous metals, engineered plastics, and composites, Metal Textiles emission-control solutions can also be found in equipment designed for use in corrosive and high-temperature environments—such as marine engines as well as consumer and industrial generators and compressors. Custom engineered to enhance...

Noise Suppression & Vibration Reduction

Exceptional Noise Suppression and Dispersion with Knitted Wire Mesh Noise—whether continuous or intermittent—is unpleasant, reduces productivity, and may even promote hearing loss. In addition, meeting OSHA, MESA, and other state and federal legislative requirements mandates that manufacturers incorporate effective noise suppression in equipment.   Basically, there are four ways to achieve noise auppression: Add a physical sound barrier Install a vibration damper Provide sound absorption Metering the air flow Only knitted wire mesh functions as all four—economically and as a single-composite material. Due to its basic structure, knitted wire mesh provides exceptionally efficient absorption of high-energy sound. Beyond acting as a physical barrier, mesh also causes sound to vibrate as it imparts the wire surface, thereby converting sound to thermal energy, effectively dampening, absorbing, and dissipating equipment and plant-generated noise through an intricate path between a sound source and the ear. In the same way that an aerator on a household faucet disperses the stream of water into smaller bubbles, so too, Metal Textiles knitted wire mesh distributes air— breaking it up and sending it through very small exit apertures before it is dispersed into the atmosphere. Metal Textiles knitted wire mesh combines all three approaches to sound attenuation in one composite structure: it acts as a reflecting barrier, a vibration damper, and a sound absorber. This three-in-one combination is cost effective and is easier to design with reduced space requirements. It can be incorporated into existing products without changing their design specifications and manufacturing. More Efficient, Economical Noise Suppression for Equipment and Industrial Plants with Knitted Wire Mesh Unlike metal baffle plates-which usually involve costly welded constructions and add significant weight. Metal Textiles knitted wire mesh noise suppression solutions are light in weight and economical. Metal baffles can also slow the passage of air-in some cases resulting in reduced equipment operating efficiency due to generation of excessive back pressure. Porous materials such as foamed plastics and synthetic felts are highly susceptible to degradation at elevated temperatures- leading to eventual embrittlement and decomposition. Knitted metals can be virtually custom tailored to specific needs of a given application. Engineered products can be fabricated from Metal Textiles by knitting one or a combination of widely diverse materials, such as all types of stainless...

Air & Liquid Filters

Superior Filtration in Hostile Environments with Knitted Wire Mesh Filtering liquids or air in hostile environments—such as those subject to temperature extremes, high orders of shock/vibration, and caustic fuels or fumes—has posed problems for paper filter elements. These types of elements simply will not withstand these types of operating conditions. Since paper filters are typically composed of organic materials, they are also subject to attack by the caustic byproducts of many industrial processes— such as those involving combustion. For example, corrosion often takes place when high-temperature lubricating oils are loaded with such acids. After extended use, the surface area of the paper filter becomes heavily loaded, resulting in filter weak spots. (If the pressure relief valve is not set low enough, and the pressure is allowed to remain at normal operating pressure [500 to 700 kPa], paper filter elements may tear, fracture, or even burst.) Sintered metal filters—due to their granular construction—are also prone to fracture or disintegration when subjected to the stresses of high temperature and shock. Unless the fusion process involved in their construction is 100% complete, small particles may begin to break away. As a result, when installed on either rotating or reciprocating machinery, little particles of filter material very frequently detach and migrate to block the very devices the filter was designed to protect. Metal Textiles knitted wire mesh liquid and air filters overcome the limitations and deficiencies of these and many other filtration methods. Where resistance to degradation, corrosion, mechanical, or thermal shock is desired—and where a resilient product is needed for proper cavity fit—Metal Textiles filters provide an economical, robust alternative. From cryogenic operating conditions up to temperatures of 650° C, knitted wire mesh filters maintain their integrity even when subjected to extremely high vibration and exposed to destructive gases such H2, SO4, and HNO3.   Metal Textiles Knitted Mesh—A Superior Alternative to Paper or Sintered Metal Knitted mesh consists of wires of various metals or strands of other materials that have been knitted into a mesh structure—creating a matrix of interlocking loops that can move freely in the same plane without distorting the mesh. (Each loop is actually free to move in three directions, and the finished metal knit permits two-way stretch.)...

High Temperature Seal Gaskets

Static Flange Gaskets High-Temperature-Resistant, Static Metal Gaskets for Demanding Exhaust Applications Gaskets for Demanding Exhaust Applications High temperature seal gaskets from Metal Textiles create a secure seal under extremely low and high temperatures and in demanding corrosive environments. Metal Textiles static flange gaskets can provide:   Zero leakage at pressures of up to 2 Bar Recovery after compression of 90% Minimum sealing stress of 10N/mm2 Temperature resistance from -50° C to 800° C Cross section from 4 mm to 8 mm Inside diameters from 38 mm to 127 mm Custom cross-sections and ID also available Exhaust System Sealing Technology that Keeps Pace with Emission Regulations   As the automotive industry continues to keep pace with new emissions regulations, the requirements of exhaust system joints become increasingly demanding. These joints must not only prevent the release of untreated exhaust gas, they must also combat ingestion of oxygen into the exhaust system-which can have adverse effects on the closed-loop emission control system. To meet these stringent demands, Metal Textiles engineers have developed a system approach to joint design, and coupled that with advances in seal and gasket materials, geometry, and construction. An all-metal ring gasket that improves performance A thin metal jacket fully encapsulates a knitted wire mesh core. This all-metal construction eliminates filler material burn-out and provides far greater resiliency over traditional automotive flange gaskets-even at elevated temperatures. In addition, all component materials can be custom-tailored to achieve further gains in resiliency. The gasket is designed to fit into a groove in the flange, with the groove depth sized to limit ring compression, allowing the gasket to operate in a set portion of the compression/recovery curve. Designed for installation between two geometrically identical flanges welded to adjacent system components. The slight oval shape of the gasket locks firmly into the flange groove or around the pipe’s OD during assembly. The seal is constructed of a stainless steel foil ring with a round, rectangular, or oval cross-section formed around a resilient knitted wire mesh core. This durable seal has unique spring-back properties and, due to its all-metal design, is ideal for high-temperature and high-corrosion environments. Available with a sheet-metal carrier which fits over the studs that hold the gasket in place...

Spherical Joint System

A New, Low-cost, Spherical Joint System Design for Automotive Applications   The Metal Textiles Spherical Joint System combines breakthrough innovation and global best-practices of the classic spring-loaded exhaust decoupler ball joint in a turnkey system to assure consistent superior performance for the life of the vehicle. Using a system approach, the proven durable exhaust ball joint technology has been optimized to provide near zero-leak performance at a fraction of the cost of bellows-based systems, while meeting the stringent durability and customer satisfaction needs of major automotive manufacturers worldwide. The self-supporting exhaust decoupler design can support the weight of the exhaust system in either the vertical or horizontal direction, eliminating the need for additional hangers. In addition, the system displays stable, consistent, dynamic behavior throughout the life of the vehicle. The Metal Textiles spherical-loaded joint system offers the following performance characteristics: Operating temperatures up to 700°C (flange surface) Less than 1.0 standard liters per minute leakage at pressures up to 34kPa when new Less than 2.0 standard liters per minute leakage at pressures up to 34kPa after vehicle durability tests Pipe outside diameters from 38 mm to 76 mm The Metal Textiles spherical joint system is a complete “turnkey” spring-loaded ball joint for use in the exhaust systems of internal combustion engines. The system was developed to provide a joint with “near-zero” leakage performance in automotive exhaust systems, while acting as a: Exhaust decoupler to isolate the vibrations of the engine from the remainder of the exhaust system and the passenger compartment. This is extremely important in automobiles where any reduction in noise, vibration, and harshness (NVH) will improve ride quality. Pivot point to stop the exhaust system from moving when the engine exhibits large amplitude rolling motion. This is most important in front wheel drive (FWD) vehicles with transverse mounted engines. In these cases, the roll axis of the engine is perpendicular to the axis of the exhaust system. With no pivot point, the exhaust will slam into the vehicle underbody, or the ground, when the engine rolls upon gear changes and acceleration/deceleration. Evolutionary Design for Spherical Joint System to Reduce Vibration and Enhance Product Quality   The Metal Textiles Spherical Joint System represents evolutionary refinements to the classic automotive...

Transportation

Metal Textiles Automotive Products meet a wide range of critical needs – from providing flexible, yet durable high-temperature seals and joints to noise attenuation, thermal insulation and filtration. A partner to the automotive industry, Metal Textiles designs and manufactures products that take optimal advantage of the unique thermal/mechanical properties of knitted wire mesh to help airbag, exhaust, vehicle and engine manufacturers create: High-temperature static and dynamic seals and gaskets Quiet, leak-free exhaust system joints Greater protection and shielding for components from heat loss Reduced noise and vibration from critical areas Enhanced filter efficiency in crankcase ventilation systems Our exhaust, airbag, sealing and filtration products can be found in passenger, light truck and all-terrain vehicles, internal combustion engines and diesel trucks, earth-moving equipment, and recreational vehicles. Knitted wire mesh not only provides a higher level of integrity, but our engineered sealing, gasketing, filtration and heat management solutions are cost effective, economical solutions in comparison with other...