Pump pressure control valve with shock reduction features
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04B-049/22
F04B-053/10
F02M-055/04
F02M-059/36
F04B-007/00
F04B-011/00
출원번호
US-0355963
(2012-01-23)
등록번호
US-8979514
(2015-03-17)
발명자
/ 주소
Furuhashi, Tsutomu
Ramamurthy, Dhyana
Lubinski, Joseph
Spence, Rebecca
출원인 / 주소
DENSO International America, Inc.
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
A pump includes a pump casing defining a first chamber and a second chamber, and fluid moves from the first chamber to the second chamber during a stroke. The pump also includes a needle that is movably disposed in the first chamber and a valve carriage that is movably disposed in the second chamber
A pump includes a pump casing defining a first chamber and a second chamber, and fluid moves from the first chamber to the second chamber during a stroke. The pump also includes a needle that is movably disposed in the first chamber and a valve carriage that is movably disposed in the second chamber. The valve carriage includes an internal stop, and the valve carriage also includes a cavity therein that is partially defined by the internal stop. The pump further includes a valve that is movably disposed within the cavity of the valve carriage, and the valve is operable to be impacted by the needle during the stroke. Also, the needle is operable to impact the valve carriage during the stroke. Moreover, the valve is operable to impact the internal stop during the stroke at a time different from the needle impacting the valve carriage.
대표청구항▼
1. A pump having a stroke for moving a fluid comprising: a pump casing defining a first chamber and a second chamber, the fluid moving from the first chamber to the second chamber during the stroke;a needle that is movably disposed in the first chamber;a valve carriage that is movably disposed in th
1. A pump having a stroke for moving a fluid comprising: a pump casing defining a first chamber and a second chamber, the fluid moving from the first chamber to the second chamber during the stroke;a needle that is movably disposed in the first chamber;a valve carriage that is movably disposed in the second chamber, the valve carriage including an internal stop, the valve carriage also including a cavity therein that is partially defined by the internal stop; anda valve that is movably disposed within the cavity of the valve carriage, the valve operable to be impacted by the needle during the stroke, the needle operable to impact the valve carriage during the stroke, and the valve operable to impact the internal stop during the stroke at a time different from the needle impacting the valve carriage. 2. The pump according to claim 1, further comprising a solenoid coil that is disposed within the first chamber, wherein energization and deenergization of the solenoid coil selectively causes movement of the needle. 3. The pump according to claim 1, further comprising a needle biasing member that biases the needle toward the valve. 4. The pump according to claim 1, further comprising a valve carriage damper operable to dampen at least one of a first load resulting from the needle impacting the valve carriage and a second load resulting from the valve impacting the internal stop. 5. The pump according to claim 4, wherein the pump casing defines a third chamber, the pump further comprising a wall that demarcates a division between the second chamber and the third chamber, the valve carriage damper being disposed between the valve carriage and the wall. 6. The pump according to claim 4, wherein the valve carriage damper is operable to dampen both the first and second loads. 7. The pump according to claim 1, wherein the valve carriage further defines at least one fluid passageway for movement of the fluid into and out of the cavity of the valve carriage. 8. The pump according to claim 7, wherein the at least one fluid passageway includes a first fluid passageway allowing flow of the fluid from outside the valve carriage into the cavity during the stroke and a second fluid passageway allowing flow of the fluid from inside the cavity to outside the cavity during the stroke. 9. The pump according to claim 7, wherein the at least one fluid passageway includes a valve seat, the valve selectively seating on and unseating from the valve seat to thereby control flow of the fluid through the at least one fluid passageway. 10. The pump according to claim 9, further comprising a valve biasing member that applies a biasing load on the valve toward a position in which the valve is seated on the valve seat, the impact of the needle against the valve moving the valve against the biasing load to unseat the valve from the valve seat. 11. The pump according to claim 10, wherein the valve carriage includes a sleeve opening through which the valve projects, wherein impact of the needle against the valve advances the valve into the sleeve opening and into the cavity. 12. The pump according to claim 11, wherein the needle has a needle width, and wherein the sleeve opening has a sleeve opening width, the needle width being larger than the sleeve opening width such that, after impacting the valve and advancing the valve into the sleeve opening and cavity, the needle impacts the valve carriage. 13. A pump having a suction stroke for moving a fluid comprising: a pump casing defining a first chamber and a second chamber, the fluid moving from the first chamber to the second chamber during the suction stroke;a needle that is movably disposed in the first chamber;a valve carriage that is movably disposed in the second chamber, the valve carriage including an internal stop, the valve carriage also including a cavity therein that is partially defined by the internal stop, a sleeve opening defined in the valve carriage and providing access to the cavity;a fluid passageway defined through the valve carriage, the fluid passageway including a valve seat; anda valve that is movably disposed within the cavity to seat on and unseat from the valve seat to control flow of the fluid into the cavity, the valve operable to protrude partially from the sleeve opening,the needle operable, during the suction stroke, to move toward the valve and the valve carriage and eventually impact the valve,the needle operable, during the suction stroke and after impacting the valve, to advance the valve into the cavity and unseat the valve from the valve seat,the needle operable, during the suction stroke and after unseating the valve from the valve seat, to impact the valve carriage, andthe valve operable, during the suction stroke and after the needle impacts the valve carriage, to advance further into the cavity and impact the internal stop. 14. The pump according to claim 13, further comprising a valve carriage damper operable to dampen both of a first load resulting from the needle impacting the valve carriage and a second load resulting from the valve impacting the internal stop. 15. The pump according to claim 13, further comprising a valve biasing member that applies a biasing load on the valve toward a position in which the valve is seated on the valve seat, the impact of the needle against the valve moving the valve against the biasing load to unseat the valve from the valve seat. 16. The pump according to claim 13, wherein the needle has a needle width and the sleeve opening having a sleeve opening width, the needle width being larger than the sleeve opening width such that, after impacting the valve and advancing the valve into the sleeve opening and cavity, the needle impacts the valve carriage. 17. The pump according to claim 13, wherein the pump casing further defines a third chamber that is fluidly connected to the second chamber, and further comprising a plunger that is movably disposed within the third chamber, the plunger moving within the third chamber during the suction stroke such that the fluid moves from the first chamber, into the second chamber, and into the third chamber. 18. The pump according to claim 17, wherein the pump casing further defines a fourth chamber that is fluidly connected to the third chamber, and further comprising a check valve that controls flow of the fluid from the third chamber to the fourth chamber. 19. The pump according to claim 18, wherein the pump further includes a pump stroke, and further including a solenoid that is operable, during the pump stroke, to energize to prevent impact of the needle against the valve such that the valve remains seated against the valve seat to prevent flow of fluid within the second chamber to the first chamber, the plunger operable, during the pump stroke, to move within the third chamber to open the check valve and pump the fluid within the third chamber into the fourth chamber. 20. A vehicle fuel pump having a suction stroke and a pump stroke for moving a fuel comprising: a pump casing defining a first chamber, a second chamber, a third chamber, and a fourth chamber;a needle that is movably disposed in the first chamber and that is biased toward the second chamber, movement of the needle being selectively controlled by a solenoid;a valve carriage that is movably disposed in the second chamber, the valve carriage including an internal stop, the valve carriage also including a cavity therein that is partially defined by the internal stop, a sleeve opening defined within the valve carriage and providing access to the cavity;a first fluid passageway defined through the valve carriage, the first fluid passageway including a valve seat;a second fluid passageway defined through the internal stop;a valve that is movably disposed within the cavity and that is biased to seat against the valve seat and to protrude partially from the sleeve opening;a plunger that is movably disposed within the third chamber; anda check valve that controls flow from the third chamber to the fourth chamber;the needle operable, during the suction stroke, to move toward the valve and the valve carriage and eventually impact the valve,the needle operable, during the suction stroke, to advance the valve into the cavity and unseat the valve from the valve seat after impacting the valve,the needle operable, during the suction stroke, to impact the valve carriage after unseating the valve from the valve seat,the valve operable, during the suction stroke, to advance further into the cavity and impact the internal stop after the needle impacts the valve carriage,the plunger operable, during the suction stroke, to move within the third chamber to draw fuel along a flow path extending from the first chamber, through the first fluid passageway, through the cavity, through the second fluid passageway, and into the third chamber,the check valve operable, during the suction stroke, to prevent flow of fuel from the third chamber into the fourth chamber,the solenoid operable, during the pump stroke, to energize to prevent impact of the needle against the valve such that the valve remains seated on the valve seat to prevent flow of fuel from within the second chamber to the first chamber, andthe plunger operable, during the pump stroke, to move within the third chamber to open the check valve and pump the fluid within the third chamber into the fourth chamber.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Tatsuo Ozaki JP; Satomi Muto JP; Takaaki Sakane JP, Compound heat exchanger having two cores.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.