IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0679032
(1991-05-15)
|
우선권정보 |
DE-3937708 (1989-11-13) |
국제출원번호 |
PCT/DE90/00802
(1990-10-24)
|
§371/§102 date |
1991May1
(1991May1)
|
국제공개번호 |
WO-9107586
|
발명자
/ 주소 |
- Oberl Johann (Murr DEX) Schmidt Hermann (Reutlingen DEX) Lutz Rolf (Reutlingen DEX)
|
출원인 / 주소 |
- Robert Bosch GmbH (Stuttgart DEX 03)
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
▼
A pressure valve, which is installed in the delivery line leading from a fuel injection pump to a fuel injection valve, and which has a valve closing member opening in the direction of delivery, which is provided with a return collar. To achieve uniform injection, particularly a uniform curve of inj
A pressure valve, which is installed in the delivery line leading from a fuel injection pump to a fuel injection valve, and which has a valve closing member opening in the direction of delivery, which is provided with a return collar. To achieve uniform injection, particularly a uniform curve of injection at a given load plotted against the speed, the opening rate of the connecting cross-section at the valve closing member is controlled by the guide part being provided immediately adjacent to the return collar, which guide part has three excisions at its circumference. These excisions are bounded by a flow channel guiding the valve closing member and have a defined flow cross-section of equal size, which in total is of the order of magnitude of the cross-section of the delivery line. With increasing stroke a total connecting cross-section is freed at the excisions by the boundary edge which limits the excisions at the side of the return collar and by the outlet edge of the flow channel, which connecting cross-section never becomes greater than the flow cross-section.
대표청구항
▼
A pressure valve for installation in a delivery line (7, 7′) between a pump working space of a fuel injection pump and a fuel injection point (8) in an internal combustion engine supplied by the fuel injection pump, said pressure valve includes a valve seat body (14) which has a valve seat (19) and
A pressure valve for installation in a delivery line (7, 7′) between a pump working space of a fuel injection pump and a fuel injection point (8) in an internal combustion engine supplied by the fuel injection pump, said pressure valve includes a valve seat body (14) which has a valve seat (19) and a flow channel (20, 120), a closing member (21, 121) of the pressure valve (1) guided in said flow channel (20, 120) which closing member (21, 121) has a sealing surface (25) with which it is pressed in a closed position of the pressure valve onto the valve seat (19) adjoining the flow channel (20, 120) by a compression spring (26) braced in a fixed manner in a spring space (28) located on a side of the closing member facing away from the pump working space, which closing member further has a return collar (35, 135) which can be moved in a leak-proof manner in the flow channel (20, 120), which is immersed therein in a closed position and emerges from the flow channel (20, 120) on the spring space side when the pressure valve opens and with a passage part with a control collar matching the diameter of the flow channel, at the circumference of which control collar there are several excisions (38, 138) extending over the whole length of the control collar, which excisions (38, 138) together with the wall of the flow channel (20, 120) forms each flow cross-section, said excisions being distributed at equal angular spacings on the circumference of the closing member and having flow cross-sections of equal size, which excisions (38, 138) extend over the whole length of the closing member adjacent to the pump working space side and which together with an outlet edge (22) bounding the flow channel (20, 120) on the spring space side form a connecting cross-section between the pump working space and the delivery line 7 and the restoring force together with the cross-section of the flow channel and the total flow cross-section are so matched that with increasing fuel delivery rate the connecting cross-section is enlarged by the movement of the closing member (21, 121) against the force of the compression spring (26), whereby the connecting cross-section is always smaller than or the same size as the total flow cross-section.
이 특허를 인용한 특허 (10)
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Muramatsu, Toshihiko; Furukawa, Takashi; Takase, Shinji, Fuel pressure regulating valve.
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Reda Rizk DE, Injection device for a direct-injection internal combustion engine.
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De Matthaeis, Sisto Luigi, Internal combustion engine high-pressure fuel delivery valve.
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Chappel, Eric; Neftel, Frédéric, Passive fluid flow regulator.
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Momont Timothy W. ; Wilfong Philip, Pressure regulator for watering system.
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Momont Timothy W. ; Wilfong Philip, Pressure regulator for watering system.
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Momont Timothy W. ; Wilfong Philip, Pressure regulator for watering system.
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Katz Oded,ILX, Water supply system and method particularly useful for poultry houses, and water pressure reducer for use in such syste.
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