[특허]Bleed element with overmolded seal for evaporative emissions canister

Bleed element with overmolded seal for evaporative emissions canister 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-033/02 F02M-025/08
출원번호	US-0461857 (2012-05-02)
등록번호	US-8881710 (2014-11-11)
발명자 / 주소	Lin, Jhun-Sou Hipp, Mark E. Kersman, Christopher M. Cobb, Mark
출원인 / 주소	Ford Global Technologies, LLC
대리인 / 주소	Dottavio, James
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록 ▼

A deflector mounts a carbon scrubber element at an atmospheric port of an evaporative emissions canister. A substantially cylindrical shell has an open end and a closed end. A spacer plate extends outwardly from the shell. An elastomeric ring is overmolded within the shell at a longitudinal position between the ends. The elastomeric ring has an inner diameter configured to sealingly receive the carbon element. A plurality of vapor apertures are formed in the shell between the spacer plate and the elastomeric ring. A plurality of elastomeric ribs are overmolded by the interior surface within the shell the vapor apertures and the closed end, and are configured to be spaced around the carbon element to suspend the carbon element spaced away from the shell without blocking a gaseous flow from the vapor vents to the carbon element.

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1. An evaporative emissions unit for a vehicle to capture fuel vapors from a fuel tank vented to external atmosphere, comprising: a canister body having a first port for coupling to a fuel tank and a second port for coupling to external atmosphere;an elongated carbon element for adsorbing fuel vapors from a gaseous flow from a first longitudinal end of the carbon element to a second longitudinal end; anda deflector for mounting the carbon element within the canister body in communication with the second port, wherein the deflector comprises: a substantially cylindrical shell having an open end and a closed end;a spacer plate extending outwardly from the shell;an elastomeric ring overmolded by an interior surface of the shell at a longitudinal position intermediate of the open end and the closed end, wherein the elastomeric ring sealingly receives the carbon element continuously around a circumference proximate to the first longitudinal end of the carbon element;a plurality of vapor apertures formed in the shell located longitudinally between the spacer plate and the elastomeric ring; anda plurality of elastomeric ribs overmolded by the interior surface of the shell and located longitudinally between the vapor apertures and the closed end, wherein the elastomeric ribs are spaced around the carbon element to suspend the carbon element spaced away from the shell without blocking a gaseous flow from the vapor vents to the second longitudinal end of the carbon element;wherein the open end of the shell sealingly connects with the second port. 2. The evaporative emissions unit of claim 1 wherein the shell and the spacer plate are integrally over-molded onto the elastomeric ring and the elastomeric ribs. 3. The evaporative emissions unit of claim 1 wherein the elastomeric ribs include at least one elongated body for receiving the carbon element. 4. The evaporative emissions unit of claim 1 wherein the elastomeric ribs are each comprised of an L-shaped body having a first arm over-molded by the interior surface of the shell extending away from the closed end. 5. The evaporative emissions unit of claim 4 wherein each L-shaped body has a second arm over-molded by the closed end. 6. The evaporative emissions unit of claim 1 wherein the spacer plate includes a plurality of flexible prongs compressed against the canister body, and wherein the unit further comprises adsorbent pellets disposed against a side of the spacer plate facing the closed end. 7. The evaporative emissions unit of claim 1 further comprising a plurality of stop ribs formed in the canister body for abutting the spacer plate to align the deflector on the second port. 8. The evaporative emissions unit of claim 1 wherein the second port comprises a slotted dome with a shoulder for sealingly receiving the open end of the shell. 9. The evaporative emissions unit of claim 1 wherein the cylindrical shell has a circular cross section. 10. A deflector for mounting a carbon scrubber element at an atmospheric port of an evaporative emissions canister, comprising: a substantially cylindrical shell having an open end and a closed end;a spacer plate extending outwardly from the shell;an elastomeric ring overmolded by an interior surface of the shell at a longitudinal position intermediate of the open end and the closed end, wherein the elastomeric ring has an inner diameter configured to sealingly receive the carbon element;a plurality of vapor apertures formed in the shell located longitudinally between the spacer plate and the elastomeric ring; anda plurality of elastomeric ribs overmolded by the interior surface of the shell and located longitudinally between the vapor apertures and the closed end, wherein the elastomeric ribs are configured to be spaced around the carbon element to suspend the carbon element spaced away from the shell without blocking a gaseous flow from the vapor vents to the carbon element;wherein the open end of the shell is configured to sealingly connect with the atmospheric port. 11. The deflector of claim 10 wherein the shell and the spacer plate are integrally over-molded onto the elastomeric ring and the elastomeric ribs. 12. The deflector of claim 10 wherein the elastomeric ribs include at least one elongated body for receiving the carbon element. 13. The deflector of claim 10 wherein the elastomeric ribs are each comprised of an L-shaped body having a first arm over-molded by the interior surface of the shell extending away from the closed end. 14. The deflector of claim 13 wherein each L-shaped body has a second arm over-molded by the closed end. 15. The deflector of claim 10 wherein the spacer plate includes a plurality of flexible prongs configured to be compressed against the canister to fix the deflector in place. 16. The deflector of claim 10 wherein the cylindrical shell has a circular cross section.

이 특허에 인용된 특허 (35)

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Reddy,Sam R, Method and system of evaporative emission control for hybrid vehicle using activated carbon fibers.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Bleed element with overmolded seal for evaporative emissions canister 원문보기

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