EVAPORATIVE FUEL VAPOR EMISSION CONTROL SYSTEMS

• Main Authors: HILTZIK LAURENCE H, MILLER JAMES R, WILLIAMS ROGER S, MACCRAE PETER D
• Format: Patent
• Language: English; Korean
• Published: 30.01.2020
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

휘발성 배출량 제어 캐니스터 시스템은, 25℃에서, 5 vol% 내지 50 vol% n-부탄의 증기 농도에서 35g n-부탄/ℓ보다 큰 유효 증분 흡착 용량을 갖는 초기 흡착제 공간과, 25℃에서, 5 vol% 내지 50 vol% n-부탄의 증기 농도에서 35g n-부탄/ℓ보다 작은 유효 증분 흡착 용량을 가지는 적어도 하나의 후속 흡착제 공간을 포함한다. 상기 휘발성 배출량 제어 캐니스터 시스템은 40g/hr BETP 부탄 로딩 단계 후에 적용된 약 210ℓ 이하의 퍼지에서 20mg 이하의 2일 일상 증발 손실(DBL) 배출량을 갖는다. 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.