Ingevity South Carolina, LLC

Marta Leon Garcia

Laurence H Hiltzik

Cameron I Thomson

Timothy M Byrne

James R Miller

Roger S Williams

Stephan Charles Cronin

Erik W Versen

Eyma Y Marrero-Alfonso

The present disclosure describes an evaporative emission control canister system that includes: one or more canisters comprising at least one vent-side particulate adsorbent volume comprising a particulate adsorbent having microscopic pores with a diameter of less than about 100 nm; macroscopic pores having a diameter of about 100-100,000 nm; and a ratio of a volume of the macroscopic pores to a volume of the microscopic pores that is greater than about 150%, and having a retentivity of about 1.0 g/dL or less. The system may further include a high butane working capacity adsorbent. The disclosure also describes a method for reducing emissions in an evaporative emission control system.

Evaporative fuel vapor emission control systems

The present description provides adsorbent compositions and materials, and systems comprising the same that provide low DBL bleed emission performance. The described materials provide unexpected production advantages as compared to currently available materials.

Low emission adsorbent

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

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Mount Pleasant, SC, United States of America

Marta Leon Garcia