As reported by ScienceDirect in their study “Characterization of Activated Carbon Adsorption and Deterioration in Carbon Canisters During Vehicle Refueling,” the efficiency of carbon canisters is crucial in controlling refueling emissions. The study examined how activated carbon in these canisters adsorbs gasoline vapors and analyzed the deterioration process through extensive testing and simulation techniques.
Findings revealed that the working capacity of carbon canisters decreases as gasoline vapor loading speed increases. At a loading speed of 2700 g/h, the efficiency drops to just 58.6% – 69.6% of what it would be under normal conditions. Additionally, emissions from carbon canister bleeding mainly consist of small-molecule alkanes, and these emissions differ from refueling emissions.
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