IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0469018
(2012-05-10)
|
등록번호 |
US-8887748
(2014-11-18)
|
우선권정보 |
DE-10 2011 101 187 (2011-05-11) |
발명자
/ 주소 |
|
출원인 / 주소 |
- MAGNA STEYR Fahrzeugtechnik AG & Co KG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A pressure reducer having a high-pressure inlet, a low-pressure outlet and a valve having a valve seat and a valve plunger, which interacts therewith and can be displaced in a direction of displacement. When displaced away from the valve seat, the valve plunger opens a first path between the high-pr
A pressure reducer having a high-pressure inlet, a low-pressure outlet and a valve having a valve seat and a valve plunger, which interacts therewith and can be displaced in a direction of displacement. When displaced away from the valve seat, the valve plunger opens a first path between the high-pressure inlet and the low-pressure outlet. The pressure reducer furthermore includes a second path, which connects the high-pressure inlet and the low-pressure outlet, a first control valve, which is arranged in the course of the second path, and a first effective area of the valve plunger, which is arranged in the course of the second path and is aligned in such a way that a first control pressure acting thereon results in a first force on the valve plunger in the direction of displacement.
대표청구항
▼
1. A method for operating a pressure reducer, the method comprising: providing a pressure reducer having a high-pressure inlet, a low-pressure outlet, a valve having a valve seat and a valve plunger which interacts therewith, the valve plunger configured for displacement in a displacement direction
1. A method for operating a pressure reducer, the method comprising: providing a pressure reducer having a high-pressure inlet, a low-pressure outlet, a valve having a valve seat and a valve plunger which interacts therewith, the valve plunger configured for displacement in a displacement direction such that, when displaced away from the valve seat, the valve plunger opens a first path between the high-pressure inlet and the low-pressure outlet, and a second path operatively connecting the high-pressure inlet and the low-pressure outlet;adjusting, via a first control valve, a first control pressure acting on a first effective area of the valve plunger and resulting in a first force acting on the first effective area in the displacement direction away from the valve seat, wherein the first effective area and the first control valve are arranged in the second path; andadjusting, via a second control valve, a second control pressure on a second effective area of the valve plunger which is spatially arranged in the second path, thereby resulting in a second force acting on the second effective area in a second displacement direction towards the valve seat, the second force acting counter to the first force. 2. The method of claim 1, wherein: the first control pressure is adjusted using the first control valve, the first control valve being provided in the second path; andthe first control valve is controlled using a pulse-width-modulated signal. 3. The method of claim 2, wherein: the second control valve is provided in the second path; andthe second control valve is controlled using a pulse-width-modulated signal. 4. A pressure reducer comprising: a housing having a high-pressure inlet and a low-pressure outlet;a valve arranged in the housing, the valve having a valve seat and a valve plunger which interacts with the valve seat, the valve plunger configured for displacement in a displacement direction such that, when displaced away from the valve seat, the valve plunger opens a first path between the high-pressure inlet and the low-pressure outlet;a second path which operatively connects the high-pressure inlet and the low-pressure outlet;a first control valve which is arranged in the second path; anda second control valve which is arranged in the second path,wherein a rear area of the valve plunger has a first effective area which is spatially arranged in the second path between the first control valve and the second control valve and is spatially aligned such that a first control pressure acting thereon results in a first force on the valve plunger in the displacement direction, and a second effective area of the valve plunger which is spatially arranged in the second path and spatially aligned such that a second control pressure acting thereon results in a second force on the valve plunger in a second displacement direction towards the valve seat, the second force acting counter to the first force. 5. The pressure reducer of claim 4, further comprising a restriction provided in the second path, wherein the first effective area is arranged spatially between the restriction and the first control valve. 6. The pressure reducer of claim 4, wherein the second control valve is arranged in the course of the second path between the first effective area and the second effective area, and in that the second force and a spring force are directed in a closing direction of the valve plunger. 7. The pressure reducer of claim 4, further comprising an open-loop controller which controls at least one of the first control valve and the second control valve. 8. The pressure reducer of claim 4, further comprising a closed-loop controller which detects at least one of the first control pressure and the second control pressure and also controls at least one of the first control valve and the second control valve. 9. The pressure reducer of claim 4, wherein at least one of the first control valve and the second control valve comprises a proportional valve. 10. The pressure reducer of claim 4, wherein at least one of the first control valve and the second control valve comprises an on-off valve. 11. The pressure reducer of claim 4, wherein at least one of the first control valve and the second control valve is configured such that when a pressure difference is applied between the high-pressure inlet and the low-pressure outlet, a medium flowing through the pressure reducer flows through at least one of the first control valve and the second control valve even in a closed position of the at least one of the first control valve and the second control valve. 12. The pressure reducer of claim 4, wherein the first control valve and the second control valve comprises a 3/3-way valve or a 3/2-way valve. 13. The pressure reducer of claim 4, wherein the first control valve and the second control valve comprises a 3/2-way valve. 14. The pressure reducer of claim 4, wherein one of the first control valve, the second control valve and the restriction is arranged spatially in the second path between the first effective area and the second effective area. 15. The pressure reducer of claim 4, further comprising: a first measuring device which measures the first control pressure; anda second measuring device which measures the second control pressure. 16. The pressure reducer of claim 4, further comprising a bias mechanism which exerts a force on the valve plunger in a direction of one of the first force and the second force. 17. A pressure reducer comprising: a valve arranged in a housing having a high-pressure inlet and a low-pressure outlet, the valve having a valve seat and a valve plunger valve plunger to be displaced in a displacement direction from the valve seat which opens a first path between the high-pressure inlet and the low-pressure outlet;a second path to operatively connect the high-pressure inlet and the low-pressure outlet, the second path having a first connecting line which extends from the high-pressure inlet to a first rear plunger chamber, a second connecting line which extends from a second rear plunger chamber to the low-pressure outlet, and a third connecting line which extends from the first rear plunger chamber to the second rear plunger chamber;a first control valve arranged in the first connecting line;a second control valve provided in the third connecting line,wherein the valve plunger has: a first effective area at a rear area thereof which faces the first rear plunger chamber such that a first control pressure acting thereon is to result in a first force on the valve plunger in the displacement direction away from the valve seat, anda second effective area at a rear area thereof which faces the second rear plunger chamber such that a second control pressure acting thereon is to result in a second force on the valve plunger that is to act counter to the first force. 18. The pressure reducer of claim 17, further comprising a controller to detect the first control pressure and the second control pressure and also control the first control valve and the second control valve based upon one of the detected first control pressure and the second control pressure.
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