Invention Grant
- Patent Title: Evaporative fuel vapor emission control systems
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Application No.: US16057757Application Date: 2018-08-07
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Publication No.: US10280820B2Publication Date: 2019-05-07
- Inventor: Laurence H. Hiltzik , Peter D. McCrae , James R. Miller , Roger S. Williams
- Applicant: Ingevity South Carolina, LLC
- Applicant Address: US SC North Charleston
- Assignee: INGEVITY SOUTH CAROLINA, LLC
- Current Assignee: INGEVITY SOUTH CAROLINA, LLC
- Current Assignee Address: US SC North Charleston
- Agency: Cantor Colburn LLP
- Agent Bryan D. Zerhusen, Esq.
- Main IPC: F02M25/08
- IPC: F02M25/08 ; B01D53/04 ; F01N3/08

Abstract:
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.
Public/Granted literature
- US20180347424A1 EVAPORATIVE FUEL VAPOR EMISSION CONTROL SYSTEMS Public/Granted day:2018-12-06
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