초록

A specially designed vapor storage canister may be placed within the interior volume of a fuel tank, eliminating the need for a tank to canister vapor line and shortening the TVVA to canister vapor line, while still protecting the adsorbent bed against contamination by liquid fuel.

대표청구항 ▼

An evaporative emissions control system for an automotive vehicle, comprising, a fuel tank having a vapor space defined between the top of said tank and the normal fuel fill level of said tank, a fuel adsorbent containing canister located within said tank so that at least the upper portion of an out

An evaporative emissions control system for an automotive vehicle, comprising, a fuel tank having a vapor space defined between the top of said tank and the normal fuel fill level of said tank, a fuel adsorbent containing canister located within said tank so that at least the upper portion of an outer wall of said canister is located above said normal fuel fill level and within said tank vapor space, a trap chamber internal to said canister having a catch basin into which a purge tube opens and a vapor distribution port located above said catch basin and opening to said adsorbent, at least one vapor inlet tube opening through the upper portion of said canister outer wall and sloping upwardly through said canister into said trap chamber, whereby, fuel vapors in said tank vapor space may rise through said inlet tube and into said trap chamber where condensing vapor will be collected in said catch basin to be purged later and non-condensing vapor will be distributed to said adsorbent, while liquid fuel entering said upwardly sloping inlet tube will run back out so as to protect said adsorbent.