We are one of the leading suppliers for activated carbon
products used in evaporative emission control systems for the automotive
industry. We manufacture a wide range of activated carbons specifically
designed for gasoline vapor recovery.
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.
Automotive
– ORVR
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 Boycecarbon helps to reduce canister size due to its industry leading capacity.
Automotive
– PZEV
Partial Zero Emission Vehicle (PZEV) is a California
initiated emission category that is expanding across the country. PZEV requires
the vehicle’s 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.
Two-Wheelers
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 granularactivated 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 vehicle’s 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.
Marine
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 Boyceproducts the premier activated carbon for automotive evaporative emissions
control apply to fuel loading as well.
