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API Diesel
Exhaust Fluid Certification
has many benefits:
- Identifies for consumers diesel exhaust
fluids that meet diesel engine manufacturer requirements.
- Helps consumers find those fluids.
- Gives consumers a choice of quality brands
from which to choose.
- Helps reduce Nitrogen Oxide emissions.
- Provides rigorous monitoring of fluids
in the marketplace.
- Tests licensed fluids to ensure that they
meet program requirements.
In 2010, cars and trucks with diesel engines sold
in the United States must meet stringent new U.S. Environmental Protection
Agency (EPA) emissions requirements. To meet these requirements, many
diesel engine manufacturers have decided to use Selective Catalytic
Reduction (SCR), an emissions aftertreatment technology that converts
nitrogen oxides (NOx) in the diesel-engine exhaust stream into nitrogen
and water vapor, two natural components in the air we breathe.
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SCR technology
is not new—it has been in use for many years, but its use
in trucks and cars in North America is new. SCR converts NOx to
nitrogen and water vapor using a catalyst, the heat from the exhaust,
and a diesel exhaust fluid (DEF). The fluid, for cars and trucks
typically a solution of urea and water, is injected into the diesel
exhaust stream, and the heat from the exhaust, the fluid, and the
catalyst convert the NOx into the harmless gases.
For the SCR unit to operate properly, the diesel
exhaust fluid must meet an exacting performance standard. This standard,
published by the International Organization for Standardization
(ISO), is intended to ensure that the diesel exhaust fluid used
in SCR-equipped cars and trucks provides the performance required
by diesel engine manufacturers.
For more information
on API's Diesel Exhaust Fluid Certification Program, click here
to download the program guidelines.
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