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BASF EvapTrap

BASF Hydrocarbon Trap Helps OEMs Meet Emissions Rules

BASF EvapTrapBASF has launched its EvapTrap automotive air intake system hydrocarbon trap that the company says is applied directly onto the surface of a vehicle’s air intake box to adsorb engine hydrocarbons without increasing backpressure.

The California Air Resources Board has adopted new LEV III emissions regulations that go into effect in 2015, requiring automakers to further reduce evaporative emissions. The so-called Super Ultra-Low Emissions Vehicle (SULEV) standard under these regulations specifies near-zero evaporative emissions.

The EvapTrap meets SULEV evaporative emissions standards while allowing auto manufacturers to use their existing air intake box, which reduces costs for the OEM, says Nick Leclerc, product manager, BASF Mobile Emissions Catalysts.

The air intake system is a key source of evaporative emissions for automobiles as hydrocarbons in the engine’s fuel source can leak out through the system when the car is not running.

Traditional solutions involve adding an activated carbon honeycomb or filter to the air intake box to adsorb the hydrocarbons, which can increase backpressure while reducing fuel economy and horsepower, Leclerc says.

Evaporative emissions are measured in a co-called SHED (Sealed Housing for Evaporative Determination) test, which is a drive-in chamber built for the purpose of testing the fuel emissions of a vehicle that are not related to engine exhaust. The EvapTrap has been successfully SHED-tested and proven to offer adhesion durability to all air intake box materials, including polypropylene, BASF says. It is also tamper-proof, according to the company.

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