Patent ID: 11867140
Assignee: DELPHI TECHNOLOGIES IP LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 14:
15. A method of making an evaporative emissions canister, the method comprising the steps of:
providing a casing having an internal volume, an inlet and an outlet in fluid communication with the internal volume, and a fluid flow path defined from the inlet through the internal volume of the casing to the outlet, the fluid flow path having a cross-sectional area that varies in a direction from the inlet to the outlet, the fluid flow path including a transition zone of changing cross-sectional area in the direction from the inlet to the outlet;
disposing a layer of first adsorbent material at or directly adjacent to the transition zone;
disposing a layer of second adsorbent material adjacent to and immediately downstream from the layer of first adsorbent material in said direction;
wherein the first adsorbent material has a flow restriction that is lower than the flow restriction of the second adsorbent material, and the layer of first adsorbent material spreads a flow of fluid along the fluid flow path into the layer of second adsorbent material.