IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0216772
(2011-08-24)
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등록번호 |
US-8726886
(2014-05-20)
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발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Michael Best & Friedrich LLP
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인용정보 |
피인용 횟수 :
1 인용 특허 :
15 |
초록
▼
A fuel supply system includes a fuel supply pump and a jet pump utilizing flow from the supply pump to supply fuel to a fuel pump reservoir from a main fuel tank. The jet pump includes a body with a main inlet coupled to an outlet of the supply pump provided at its upper end. A nozzle is positioned
A fuel supply system includes a fuel supply pump and a jet pump utilizing flow from the supply pump to supply fuel to a fuel pump reservoir from a main fuel tank. The jet pump includes a body with a main inlet coupled to an outlet of the supply pump provided at its upper end. A nozzle is positioned on an interior of the body. A mixing tube is defined by the body downstream of the nozzle, and defines a channel extending along an axis. A suction inlet of the body is in fluid communication with the mixing tube channel. A jet pump outlet formed in the body is positioned at or above an upper portion of the reservoir such that fuel pours down into the reservoir. The body redirects fuel in a direction away from the axis for discharge through the jet pump outlet.
대표청구항
▼
1. A fuel supply system for delivering fuel from a tank to an engine of a motor vehicle, the fuel supply system comprising: a reservoir configured to be positioned within the tank;a supply pump positioned at least partially within the reservoir, the supply pump including an inlet positioned adjacent
1. A fuel supply system for delivering fuel from a tank to an engine of a motor vehicle, the fuel supply system comprising: a reservoir configured to be positioned within the tank;a supply pump positioned at least partially within the reservoir, the supply pump including an inlet positioned adjacent a bottom wall of the reservoir, and an outlet positioned at an upper end of the supply pump; anda jet pump coupled to the supply pump and configured to utilize a flow of pressurized fuel pumped from the reservoir by the supply pump to draw fuel from the tank and discharge fuel into the reservoir, the jet pump including a body,a main inlet of the body coupled to the outlet of the supply pump, the main inlet positioned closer to a top edge of the reservoir than a bottom wall of the reservoir,a nozzle positioned on an interior of the body,a mixing tube defined by the body downstream of the nozzle, the mixing tube defining a channel extending along an axis,a suction inlet of the body in fluid communication with the mixing tube channel, andan outlet formed in the body and positioned at or above an upper portion of the reservoir such that fuel pours down into the reservoir, wherein the body is configured to take fuel flowing along the axis through the channel and redirect the fuel in a direction away from the axis for discharge through the jet pump outlet. 2. The fuel supply system of claim 1, wherein the jet pump body further includes an inlet chamber adjacent the main inlet of the jet pump, and a second outlet in communication with the inlet chamber, the second outlet being configured to connect with a fuel supply line, and wherein the outlet of the supply pump that is coupled to the main inlet of the jet pump is the sole outlet of the supply pump. 3. The fuel supply system of claim 2, wherein the jet pump further includes a check valve positioned between the inlet chamber and the second outlet and configured to prevent flow of fuel from the second outlet into the inlet chamber. 4. The fuel supply system of claim 1, wherein the outlet of the jet pump is positioned directly over the reservoir. 5. The fuel supply system of claim 1, wherein an outlet conduit extends upwardly from the channel of the mixing tube at about a 90 degree angle with the axis. 6. The fuel supply system of claim 1, wherein the outlet of the jet pump is one of a plurality of outlets formed in an outlet conduit that extends in a direction away from the axis. 7. The fuel supply system of claim 1, wherein the suction inlet of the jet pump is positioned directly over the reservoir, the fuel supply system further comprising a suction tube coupled to the suction inlet and extending through the bottom wall of the reservoir to a suction location, without establishing fluid communication between the suction inlet and the reservoir. 8. The fuel supply system of claim 7, wherein a suction flow passage is defined between the mixing tube channel and the suction location at least in part by the suction tube and the suction inlet, and wherein the suction flow passage is non-check-valve-regulated. 9. The fuel supply system of claim 7, wherein the suction tube and the bottom wall of the reservoir are unitarily formed as a single piece. 10. The fuel supply system of claim 1, wherein the body is unitarily formed as a single piece with the main inlet, the mixing tube, the suction inlet, an outlet conduit extending away from the axis to the outlet, and the outlet. 11. The fuel supply system of claim 1, wherein the outlet is an open-discharge type outlet. 12. The fuel supply system of claim 1, wherein the outlet is spaced away from the channel along an outlet conduit extending from the channel at least partially in a direction away from the axis. 13. A jet pump comprising: a body;a main inlet of the body configured to receive a flow of pressurized fuel;a nozzle positioned on an interior of the body in fluid communication with the main inlet and configured to receive the flow of pressurized fuel and to convert the flow from a high pressure, low velocity flow to a low pressure, high velocity flow;a mixing tube defined by the body downstream of the nozzle and configured to receive the low pressure, high velocity flow of fuel, wherein the mixing tube defines a channel extending along an axis, and wherein a distal end of the mixing tube channel is closed to prevent flow from discharging axially from the channel;a suction inlet of the body in fluid communication with the mixing tube channel, the suction inlet being configured to be fluidly coupled to a fuel source so that fuel from the fuel source can be drawn into the jet pump through the suction inlet by the pressure differential across the nozzle;an outlet conduit of the body protruding outwardly from the mixing tube at least partially in a direction away from the axis; andan outlet of the body positioned remotely from the mixing tube channel along the outlet conduit. 14. The jet pump of claim 13, wherein the suction inlet defines an axis that is substantially parallel to and offset from the direction of protrusion of the outlet conduit from the channel. 15. The jet pump of claim 14, wherein the suction inlet and the outlet conduit are both located along the mixing tube channel on the same side of the nozzle. 16. The jet pump of claim 13, wherein the body is unitarily formed as a single piece with the main inlet, the mixing tube, the suction inlet, the outlet conduit, and the outlet. 17. The jet pump of claim 13, wherein the body further includes an inlet chamber adjacent the main inlet of the jet pump, and a second outlet in communication with the inlet chamber configured to be coupled with a fuel supply line. 18. The jet pump of claim 17, further comprising a check valve positioned between the inlet chamber and the second outlet and configured to prevent flow of fuel from the second outlet into the inlet chamber. 19. The jet pump of claim 13, wherein the outlet is an open-discharge type outlet configured to enable fuel to pour freely from the jet pump body. 20. The jet pump of claim 19, wherein the outlet is a hole in a wall of the outlet conduit.
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