Our granular activated carbons have a wide range of uses for the automotive industry. Boyce Granular Activated Carbon (GAC) is excellent for low pressure drop, high-efficiency purification of liquids, gases and vapors. Available in several grades, it covers a range of pore size distributions, surface chemistries, particle size distributions and purity levels. Granular activated carbons are used for gasoline vapor recovery, air purification, catalysis, and decolonization/deodorization/contaminant reduction of chemicals.
Automotive Industry Applications
Automotive Evaporative Emissions
Vehicle activated carbon canisters are designed to capture fuel emissions generated by the evaporation of the fuel tank vapors during day to night temperature variations. Emission regulations vary throughout the world. In the United States (US), requirements call for capturing fuel vapors generated during a 72-hour test, while in the European Union requirement are for a 24-hour test. Fuel vapor generation rates are approximately 25 to 30 grams a day for a mid-size vehicle. Our granular activated carbons are used by leading industries for this application because of their superior volumetric cost, performance and proven durability.
On-Board Refueling Vapor Recovery (ORVR) is a U.S. regulation that requires the capture of fuel vapors generated during vehicle refueling events. ORVR presents a unique challenge for the vehicle by requiring the canister to have high fuel vapor capacity at fast loading rates and low pressure drop. ORVR canisters are typically two to three times the size of a standard evaporative emissions canister because of these capacity requirements. Our carbon pellets are the industry standard for this application due to their high capacity, durability and low pressure drop. Further, our special grade of Boyce carbon helps to reduce canister size due to its industry leading capacity.
Partial Zero Emission Vehicle (PZEV) is a California initiated emission category that is expanding across the country. PZEV requires the vehicles fuel system to have no more than 54 mg of emissions during a 72-hour test. PZEV presents a unique challenge to control canister bleed emissions to very low levels, typically less than 10 mg. Boyce special grades gives solution to control canister bleed emissions.
There is a global expansion of canisters on motorcycles to control fuel tank evaporative emissions generated by the evaporation of the fuel tank vapors during the day to night temperature variations. These canisters are typically much smaller than an automotive canister. Our granular activated carbons are chosen for this application throughout the world for their superior volumetric cost and performance and proven durability.
Air Induction Systems
Vehicle regulations in the U.S. sometimes necessitate the control of vapors emitted through the vehicles air induction systems. Unique solutions are required to solve these emissions because of the high airflow within the AIS and the potential to affect engine performance if these airflows are inhibited. Our uniquely designed granular and powder carbon are used to reduce hydrocarbon emissions to targeted levels.
Small Off-Road Engines Fuel tanks for weed trimmers, leaf blowers, lawn mowers, generators and similar products are being mandated to control fuel evaporative emissions. Our granular activated carbons are chosen for this application for their superior volumetric cost and performance and proven durability.
The U.S. Environmental Protection Agency (EPA) is evaluating evaporative emission control regulations for recreational boats.
Cabin Air (Vehicle Interiors)
Exposure to volatile organic compounds that off-gas from interior components in new vehicles is of increasing concern in many parts of the world. Recent tests have demonstrated significant reductions of VOCs in the cabin by the use of activated carbon sheets. Boyce supplies special grades of activated carbon to make activated carbon sheets. This confirms ACS as a low-cost and effective method for reducing VOC content in the cabin before delivery to the consumer.
Hybrid Electric Vehicles and Plug-in Hybrid Electric Vehicles
Automotive equipment manufacturers are increasingly turning to advanced engine technology to increase fuel economy. HEV and PHEV, while allowing for improved fuel economy, present a unique challenge for the activated carbon canister primarily due to severely restricted purge volumes. While our carbons are recognized for their superior purge performance, to meet the challenges of HEV and PHEV our carbons are typically combined with activated carbon honeycombs to meet emission targets.
Gasoline Direct Injection Engines
Gasoline Direct Injection Engines (GDI), while allowing for improved fuel economy, present a unique challenge for the activated carbon canister primarily due to reduced purge volume. Our carbons are recognized for their superior purge performance to meet most global GDI canister challenges. Additionally, our carbons are combined with our activated carbon to meet PZEV level emission targets.
Fuel Loading/Transfer Facilities
Bulk fuel and chemical transfer facilities use large-scale activated carbon absorbers to capture the vapors that are displaced or generated during the liquid transfer. The characteristics that make Boyce products the premier activated carbon for automotive evaporative emissions control apply to fuel loading as well.
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