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公开(公告)号：US10054089B2
公开(公告)日：2018-08-21
申请号：US15523776
申请日：2015-11-02
CPC分类号： F02M37/106 , F02M37/0029 , F02M37/025 , F02M37/103 , F02M55/04
摘要： A fuel supply device includes a sub-tank, a pump unit, a jet pump, and a connection structure connected with the pump unit and the jet pump. The connection structure has a guide part that is provided to the pump unit and guides the pressurized fuel toward the bottom in an axial direction, a pressurizing part that is provided to the jet pump and is fitted to the guide part from a side of the bottom in an axially slidable manner, to which the pressurized fuel is guided from the guide part, a shock-absorbing member that has a low spring constant that is predetermined and mitigates an axial impact between the guide part and the pressurizing part, and a sealing member that has a high spring constant higher than the low spring constant of the shock-absorbing member and radially seals a space between the guide part and the pressurizing part.
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公开(公告)号：US10024282B2
公开(公告)日：2018-07-17
申请号：US15031094
申请日：2014-11-03
发明人： Yutaka Niwa , Hideto Takahashi , Tetsuro Okazono , Hironobu Oki , Akinari Sugiyama , Akihiro Ishitoya
摘要： A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.
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公开(公告)号：US10145342B2
公开(公告)日：2018-12-04
申请号：US15506041
申请日：2015-08-26
摘要： A fuel supply device includes a fuel pump, a filter case, a fuel passage, a discharge passage, and a residual pressure holding valve. A communication port opens at a shifted position of the fuel passage that is positionally shifted from the residual pressure holding valve toward the discharge passage. The fuel passage includes an outside passage part through which fuel flows from the communication port toward the discharge passage, and an inside passage part that throttles a flow of fuel flowing from the communication port toward the residual pressure holding valve more than the outside passage part. When a passage cross-sectional area of the inside passage part is converted into a passage cross-sectional area of a circular pipe, D which is a passage diameter of the circular pipe, and L which is a length of the inside passage part satisfy a relational expression of L/D≥3.
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公开(公告)号：US10054088B2
公开(公告)日：2018-08-21
申请号：US15031136
申请日：2014-11-03
发明人： Yutaka Niwa , Hideto Takahashi , Tetsuro Okazono , Hironobu Oki , Akihiro Ishitoya , Akinari Sugiyama
CPC分类号： F02M37/106 , F02M37/0023 , F02M37/0029 , F02M37/025 , F02M37/14 , F02M37/22 , F02M37/44 , F02M37/46 , F02M37/50 , F02M2037/087
摘要： A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.
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公开(公告)号：US10578063B2
公开(公告)日：2020-03-03
申请号：US15512935
申请日：2015-09-08
发明人： Shingo Fukuoka , Hideto Takahashi , Hiromi Sakai , Minoru Edura
摘要： A valve element includes: a loosely insertable wall portion that is loosely inserted in an inside of a connecting portion on a downstream side of a valve seat; a fittable tubular portion that is fitted to the inside of the connecting portion on a downstream side of the loosely insertable wall portion; and a projecting annular portion-that projects from the fittable tubular portion toward a radially inner side of the fittable tubular portion. An outlet portion projects into the fittable tubular portion. A valve spring is located on a radially outer side of the outlet portion and on the radially inner side of the fittable tubular portion to urge the valve element toward the valve seat.
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