Jet-venturi back flow prevention structure for a fuel delivery module
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04F-005/44
F04F-005/46
F02M-037/02
출원번호
US-0438420
(2006-05-23)
등록번호
US-9765797
(2017-09-19)
발명자
/ 주소
Briggs, Paul F.
Milton, Jeffery J.
출원인 / 주소
Continental Automotive Systems, Inc.
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A jet and venturi tube arrangement is provided for a fuel delivery module. The arrangement includes a venturi tube 14 having an opening 15, an internal wall 24 and a central axis C. A jet 10′ is provided that has an exit 22. The jet 10′ is constructed and arranged to spray a stream 12 of fuel from t
A jet and venturi tube arrangement is provided for a fuel delivery module. The arrangement includes a venturi tube 14 having an opening 15, an internal wall 24 and a central axis C. A jet 10′ is provided that has an exit 22. The jet 10′ is constructed and arranged to spray a stream 12 of fuel from the exit 22 into the opening 15 of the venturi tube 14 substantially along the central axis C. The jet 10′ has surface features 20, near the exit, constructed and arranged to divert a portion 12′ of the stream 12 of fuel so that the portion 12′ contacts the internal wall 24 of the venturi tube 14 thereby limiting back flow of fuel through the opening of the venturi tube.
대표청구항▼
1. A jet and venturi tube arrangement for a fuel delivery module, the arrangement comprising: a venturi tube having an opening, internal wall, and a central axis, anda jet having a non-tapered exit opening disposed on the central axis, the jet being constructed and arranged to spray a stream of fuel
1. A jet and venturi tube arrangement for a fuel delivery module, the arrangement comprising: a venturi tube having an opening, internal wall, and a central axis, anda jet having a non-tapered exit opening disposed on the central axis, the jet being constructed and arranged to spray a stream of fuel from the exit opening into the opening of the venturi tube substantially along the central axis, the jet having surface features associated with the exit and constructed and arranged to divert a portion of the stream of fuel so that the portion contacts the internal wall of the venturi tube thereby limiting back flow of fuel through the opening of the venturi tube,wherein the surface features include a plurality of channels in a body of the jet, andwherein each channel is provided about a periphery of the exit opening and communicating therewith, each channel tapers outwardly toward the internal wall of the venturi tube so as to be at an acute angle with respect to the central axis so as to guide the portion of fuel to the internal wall, the channels being constructed and arranged in the body so that a solid, continuous arc-shaped wall is defined in the body between surfaces that define adjacent channels so that fuel can flow only through the channels and the exit opening. 2. The arrangement of claim 1, wherein the exit opening is annular and four surface features are provided. 3. The arrangement of claim 2, wherein the four surface features are evenly spaced about the periphery of the annular exit opening. 4. A method of limiting back flow through a venturi tube of a fuel delivery module, the method including: providing a reservoir having an opening and a valve associated with the opening, the valve being movable to control passing of fuel through the opening to fill the reservoir,providing a venturi tube in the reservoir, the venturi tube having an opening, internal wall, and a central axis,providing a jet in the reservoir associated with the venturi tube, the jet having a non-tapered exit opening disposed on the central axis, the jet being constructed and arranged to spray a stream of fuel from the exit opening into the opening of the venturi tube substantially along the central axis thereby creating a vacuum to move the valve to permit fuel to enter the reservoir through the opening, andensuring that the jet diverts a portion of the stream of fuel so that the portion contacts the internal wall of the venturi tube thereby limiting back flow of fuel through the opening of the venturi tube,wherein the ensuring step includes the provision of surface features in a body of the jet, the surface features including channels provided about a periphery of the exit opening and communicating therewith, each channel tapering outwardly toward the internal wall of the venturi tube so as to be at an acute angle with respect to the central axis to divert the portion of fuel, the channels being constructed and arranged in the body so that a solid, continuous arc-shaped wall is defined in the body between surfaces that define adjacent channels so that fuel can flow only through the channels and the exit opening. 5. The method of claim 4, wherein the exit opening is annular and four channels are provided. 6. The method of claim 5, wherein the four channels are evenly spaced about the periphery of the annular exit opening. 7. A jet for a fuel delivery module, the jet comprising: a hollow body having an interior, the body defining a non-tapered exit opening in direct communication with the interior and disposed on and extending along a central axis of the body, the exit opening extending through a distal end face of the body, the jet being constructed and arranged to spray a stream of fuel from the exit opening substantially along the central axis, the body having surface features associated with the exit opening, the surface features being constructed and arranged to divert a portion of the stream of fuel away from the central axis,wherein the surface features include a plurality of channels provided about a periphery of the exit opening and communicating therewith at the distal end face of the body, andwherein each channel tapers outwardly and away from the central axis so as to be at an acute angle with respect to the central axis to guide fuel away from the central axis, the channels being constructed and arranged in the body so that a solid, continuous arc-shaped wall is defined in the body between surfaces that define adjacent channels so that fuel can flow only through the channels and the exit opening. 8. The jet of claim 7, wherein the exit opening is annular and four, evenly spaced, surface features are provided about the periphery of the exit opening.
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이 특허에 인용된 특허 (10)
Kleppner Stephan (Bretten DEX) Frank Kurt (Schorndorf DEX) Seitz Ansgar (Neuhausen DEX) Scheerer Hannelore (Moeglingen DEX) Ballier Guenter-Paul (Schwieberdingen DEX) Fischerkeller Rolf (Walheim DEX), Device for delivering fuel from a fuel tank to the internal combustion engine of a motor vehicle.
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