New Catalyst System Targets Diesel-Powered Equipment
Diesel Progress North American Edition - September 1999
As exhaust emissions standards become more stringent, engine aftertreatment systems have again become a focus for many engine and equipment manufacturers and operators. They are particularly suitable for diesel engines that are operated in enclosed applications such as mining and tunneling, or on material handling equipment used inside buildings.
CleanAIR Systems, Inc., Santa Fe, NM, has developed a new catalyst system designed to reduce harmful emissions from diesel engines used in stationary and off-road applications. The new CleanDiesel technology includes advanced ceramic honeycomb catalyst support technology which the company said is an improvement over ceramic bead or wrapped metal systems and offers higher catalyst load levels.
The new catalyst is used in a series of CleanDiesel converters and mufflers designed to fit a wide range of engines used in myriad types of equipment, including construction, mining and material handling machinery.
The CleanDiesel converters are installed in the exhaust system between the engine and muffler while the CleanDiesel mufflers are designed as replacements for standard OEM mufflers. For both systems, the estimated cost is under five percent of the vehicle's value, according to the company.
Both systems incorporate stainless steel housings and are designed as bolt-on units that can be easily installed. In operation, the catalysts, utilizing the heat of the exhaust gas stream, chemically converter CO and unburned hydrocarbons into CO2 and water vapor. In addition, the mufflers and converters reduce visible smoke by up to 30 percent, the company said.
Both the mufflers and converters become more efficient as exhaust temperatures increase. According to CleanAIR testing, the new catalyst has a lower light-off temperature than previous generation catalysts. The result is a 65 to 70 percent reduction in hydrocarbons at 455 degrees F (235 degrees C) and a more than 90 percent decrease at operating temperatures over 572 degrees F (300 degrees C). For carbon monoxide, the conversions efficiencies are above 80 percent at 425 degrees F and up to 99 percent at operating temperatures above 572 degrees, the company said.
The CleanAIR mufflers and converters meet both Occupancy Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA) air quality standards.
As exhaust emissions standards become more stringent, engine aftertreatment systems have again become a focus for many engine and equipment manufacturers and operators. They are particularly suitable for diesel engines that are operated in enclosed applications such as mining and tunneling, or on material handling equipment used inside buildings.
CleanAIR Systems, Inc., Santa Fe, NM, has developed a new catalyst system designed to reduce harmful emissions from diesel engines used in stationary and off-road applications. The new CleanDiesel technology includes advanced ceramic honeycomb catalyst support technology which the company said is an improvement over ceramic bead or wrapped metal systems and offers higher catalyst load levels.
The new catalyst is used in a series of CleanDiesel converters and mufflers designed to fit a wide range of engines used in myriad types of equipment, including construction, mining and material handling machinery.
The CleanDiesel converters are installed in the exhaust system between the engine and muffler while the CleanDiesel mufflers are designed as replacements for standard OEM mufflers. For both systems, the estimated cost is under five percent of the vehicle's value, according to the company.
Both systems incorporate stainless steel housings and are designed as bolt-on units that can be easily installed. In operation, the catalysts, utilizing the heat of the exhaust gas stream, chemically converter CO and unburned hydrocarbons into CO2 and water vapor. In addition, the mufflers and converters reduce visible smoke by up to 30 percent, the company said.
Both the mufflers and converters become more efficient as exhaust temperatures increase. According to CleanAIR testing, the new catalyst has a lower light-off temperature than previous generation catalysts. The result is a 65 to 70 percent reduction in hydrocarbons at 455 degrees F (235 degrees C) and a more than 90 percent decrease at operating temperatures over 572 degrees F (300 degrees C). For carbon monoxide, the conversions efficiencies are above 80 percent at 425 degrees F and up to 99 percent at operating temperatures above 572 degrees, the company said.
The CleanAIR mufflers and converters meet both Occupancy Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA) air quality standards.
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