Corning Incorporated is a leading supplier of advanced cellular ceramic substrates and ceramic particulate filters for the world’s major manufacturers of gasoline and diesel vehicles. The company invented an economical, high-performance, cellular ceramic substrate in the early 1970s that is now the standard for catalytic converters worldwide. In 1978, Corning developed the first cellular ceramic particulate filter to remove soot from diesel emissions. Today, this same base design is used for nearly all particulate filters for emissions.
Corning® DuraTrap® GC filters, have a unique microstructure and are made from cordierite, a magnesium aluminosilicate, are Corning’s newest automotive exhaust filters. They are designed to help automakers effectively reduce fine particulate emissions from gasoline engines while maximizing fuel economy. These gasoline particulate filters (GPF) trap microscopic particles of exhaust-borne carbon soot and ash, ranging in size from ~10 nanometers to several hundred nanometers, which are emitted unchecked in most of the world in gasoline vehicles, particularly those with efficient, high-performance gasoline-direct-injection (GDI) engines. Most gasoline engines emit trillions of these largely unseen particles every kilometer. These nanoparticles, such as PM2.5, impact air quality and human health and have been linked to negative health effects such as lung and heart disease and other illnesses. Corning’s family of DuraTrap GC filters offer excellent filtration efficiency of these nanoparticles from all gasoline vehicles without impacting performance.
The introduction of particulate filters in gasoline vehicles is an important engineering advancement for clean-vehicle technology as gasoline vehicles grow in popularity. In Europe, Euro 6d emissions standards call for a significant reduction in fine particulate emissions from GDI-engine vehicles, fewer than 6 x 1011 particles/kilometer over a wide variety of conditions. Starting at the end of 2020, China will implement similar regulations for all gasoline vehicles and in 2023 when regulations are fully implemented, most gasoline vehicles will require a GPF. Particulate filtration, like that of DuraTrap GC filters, is needed to meet these tougher standards, which include real-world driving conditions and tighter in-use compliance.
Corning will continue to leverage its expertise in ceramic science and extrusion manufacturing technology to develop market-leading emissions control solutions that help our customers meet future emission standards and enable cleaner air worldwide.