Ingevity South Carolina, LLC

Meadwestvaco Corporation

Weatherford Technology Holdings, LLC

Bp Corporation North America Inc.

James R Miller

Laurence H Hiltzik

Roger S Williams

Peter D McCrae

Stephan Charles Cronin

Cameron I Thomson

Marta Leon Garcia

Eyma Y Marrero-Alfonso

Emma M Card

Erik W Versen

Michael G Heim

Caleb Sutherland Loftin

David W Teale

Ladislav Falat

Joseph T Joseph

Dan Hugh Blankenship

Jeremy Lee Stone

Mark Edward Schiek

David R Walker

Maurice J Elum

William B Leedy

Peter D Mccrae

Michael R Winward

Tiejun Zhang

An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25° C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, an effective butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of between 2 grams and 6 grams. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr butane loading step.

Evaporative fuel vapor emission control systems

Golf club carrying system

The present description provides low DBL bleed emission performance properties that allows the design of evaporative fuel emission control systems that are simpler and more compact than those possible by prior art by inclusion of a vent-side volume comprising a parallel passage adsorbent such as a carbon honeycomb with narrow channel width and low cell pitch.

Low emission adsorbent and canister system

The present description provides high working capacity adsorbents with low DBL bleed emission performance properties that allows the design of evaporative fuel emission control systems that are lower cost, simpler and more compact than those possible by prior art. Emission control canister systems comprising the adsorbent material demonstrate a relatively high gasoline working capacity, and low emissions.

Low emissions, high working capacity adsorbent and canister system

An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25&#xb0; C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25&#xb0; C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr BETP butane loading step.

An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25&#xb0; C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25&#xb0; C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, an effective butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of between 2 grams and 6 grams. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr butane loading step.

Growing community of inventors

Roanoke, VA, United States of America

James R Miller