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公开(公告)号：US10794342B2
公开(公告)日：2020-10-06
申请号：US16323003
申请日：2017-06-09
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koji Maruyama , Shingo Fukuoka , Rui Adachi , Tetsuro Okazono , Norihiro Hayashi , Atsushi Kamiyama , Junichi Takatsuji
Abstract: A pump unit includes an insertion guide member that extends in a longitudinal direction of the pump unit and is used to guide the pump unit at a time of inserting the pump unit into an opening portion of a fuel tank. The insertion guide member includes a stopper portion and a guide portion that are arranged along an edge part of the insertion guide member. When the pump unit is projected in the longitudinal direction onto a plane of projection, the stopper portion protrudes outward from an imaginary circle, which has a fitting portion's diameter, on the plane of projection. The guide portion guides the pump unit in a rotational direction relative to a stay. A cross section of the pump unit taken along a guide portion orthogonal plane is set to be within the imaginary circle, which has the fitting portion's diameter.
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公开(公告)号：US10766357B2
公开(公告)日：2020-09-08
申请号：US16080326
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Rui Adachi , Kiyomori Kobayashi , Norihiro Hayashi
Abstract: In a fuel tank, a pressure regulator is placed at an outside of a sub-tank and regulates a pressure of fuel of a pressure-regulation path, which is discharged from a fuel pump and is fed toward an outside of the fuel tank. A fuel recovery passage portion recovers excess fuel, which becomes excess at the pressure-regulation path, to the sub-tank. The sub-tank has an opening at a location that is higher than the suction filter. The fuel recovery passage portion is inserted from the outside of the sub-tank into the inside of the sub-tank through the opening while a gap is formed between the fuel recovery passage portion and the opening, so that the fuel recovery passage portion has an excess fuel outlet that discharges the excess fuel at a location that is on an inner side of the opening where an inside of the sub-tank is placed.
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公开(公告)号：US10753329B2
公开(公告)日：2020-08-25
申请号：US15745762
申请日：2016-06-29
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi
Abstract: A filter element is installed in an inside of a fuel tank to filter stored fuel by passing the stored fuel into an inside space through the filter element. A partition wall element is exposed in the inside space. The partitioning portion includes: a partitioning portion that is placed to partially partition the inside space into a first space, into which filtered fuel filtered through the filter element is supplied, and a second space, in which a suction inlet for suctioning the filtered fuel opens, wherein the partitioning portion conducts the filtered fuel from the first space to the second space; and a communication window that is formed in the partitioning portion at a location, which is offset to a side that is away from the suction inlet, wherein the communication window communicates between the first space and the second space while bypassing the partitioning portion.
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公开(公告)号：US09850865B2
公开(公告)日：2017-12-26
申请号：US15305171
申请日：2015-10-06
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi , Kiyomori Kobayashi
CPC classification number: F02M37/025 , B60K15/01 , B60K15/03 , B60K2015/03111 , B60K2015/03144 , B60K2015/0325 , F02M37/0088 , F02M37/106
Abstract: A swirling wall structure-extends from a lower side toward an upper side in a sub-tank, and a fuel flow, which is outputted into an inside of the sub-tank from a flow outlet of a diffuser passage opened toward a lateral side, is swirled by the swirling wall structure. The swirling wall structure-includes a curved wall surface and a U-turn wall surface. The curved wall surface is curved about a longitudinal axis, which extends from the lower side toward the upper side in the sub-tank, to bend the fuel flow outputted from the flow outlet. The U-turn wall surface extends continuously from the curved wall surface to make a U-turn of the fuel flow, which is bent by the curved wall surface.
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公开(公告)号：US10794343B2
公开(公告)日：2020-10-06
申请号：US16418111
申请日：2019-05-21
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi
IPC: F02M37/22 , F02M37/50 , B01D29/31 , B01D35/027 , F02M37/10 , F02M37/00 , B01D29/27 , B01D35/26 , B01D35/00 , B60K15/03
Abstract: A suction filter includes a filter element disposed in a fuel tank and filtering a stored fuel that is a fuel stored in the fuel tank by allowing the stored fuel passing the filter element into an inner space, a dividing wall element disposed to divide the inner space into a first space, into which a filtered fuel that is the fuel filtered by the filter element flows, and a second space, to which an intake port drawing in the filtered fuel is opened, and enclosing the first space together with the filter element and enclosing the second space together with the filter element, and a passage element including an inflow port opened to the second space and an outflow port to which an intake pressure is applied by the intake port and defining a flow passage through which filtered fuel flows from the inflow port toward the outflow port.
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Patent Agency Ranking
公开(公告)号：US10669976B2
公开(公告)日：2020-06-02
申请号：US16077553
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Shingo Fukuoka , Norihiro Hayashi , Tetsuro Okazono
Abstract: A fuel supply device includes: a cover attached to an upper wall of a fuel tank; a pump unit disposed on a bottom wall of the fuel tank; and a connecting strut that connects the cover and the pump unit with each other. The pump unit includes: a unit body supported by the connecting strut in a radial direction and a thrust direction, and a fuel pump arranged on the unit body to pump fuel drawn from the fuel tank toward an internal-combustion engine. The fuel pump is located offset toward the connecting strut from a width center of a width from a thrust support part where the unit body is supported by the connecting strut to an end part of the unit body opposite from the connecting strut in a specific transverse direction.
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公开(公告)号：US10648436B2
公开(公告)日：2020-05-12
申请号：US16076819
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Rui Adachi , Tadashi Hazama , Norihiro Hayashi , Takashi Akiba , Shingo Fukuoka
Abstract: A fuel supply device configured to supply fuel from an inside of a fuel tank to an internal combustion engine includes: a cover body that is installed to an upper wall of the fuel tank; a pump unit that is placed on a bottom wall of the fuel tank and is configured to discharge the fuel from the inside of the fuel tank toward the internal combustion engine; and a coupling stay that couples between the cover body and the pump unit. The coupling stay includes: an upper stay that extends on a lower side of the cover body; and a lower stay that is installed to the pump unit and is slidably fitted to the upper stay in a top-to-bottom direction. A stress concentrating portion, which reduces a section modulus to concentrate a stress around the stress concentrating portion, is formed at a specific location of the lower stay.
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公开(公告)号：US10590894B2
公开(公告)日：2020-03-17
申请号：US15750573
申请日：2016-07-01
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi
IPC: F02M37/22 , F02M37/10 , B01D35/26 , B01D29/31 , B01D35/00 , F02M37/50 , B01D29/27 , B01D35/027 , F02M37/00 , B60K15/03
Abstract: A suction filter includes a filter element disposed in a fuel tank and filtering a stored fuel that is a fuel stored in the fuel tank by allowing the stored fuel passing the filter element into an inner space, a dividing wall element disposed to divide the inner space into a first space, into which a filtered fuel that is the fuel filtered by the filter element flows, and a second space, to which an intake port drawing in the filtered fuel is opened, and enclosing the first space together with the filter element and enclosing the second space together with the filter element, and a passage element including an inflow port opened to the second space and an outflow port to which an intake pressure is applied by the intake port and defining a flow passage through which filtered fuel flows from the inflow port toward the outflow port.
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公开(公告)号：US10443551B2
公开(公告)日：2019-10-15
申请号：US16211733
申请日：2018-12-06
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi
Abstract: A valve member is movable with first and second partition member and opens and closes a first pressure chamber with respect to a return passage. The first partition member partitions the first pressure chamber from a second pressure chamber. The second partition member partitions the second pressure chamber from a third pressure chamber. The first, second, and third pressure chambers cause fuel from a fuel flow passage to flow therethrough. A switching unit switches an opening and closing state of the second pressure chamber and the third pressure chamber with respect to the fuel flow passage and the return passage.
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公开(公告)号：US10138906B2
公开(公告)日：2018-11-27
申请号：US14876164
申请日：2015-10-06
Applicant: DENSO CORPORATION
Inventor： Norihiro Hayashi , Kiyomori Kobayashi
Abstract: A common width direction, along which a passage width of a communication passage section and a passage width of a pressurizing passage are defined, is perpendicular to an extending direction of a flow restricting passage section. A first passage wall surface and a second passage wall surface, which define the communication passage section therebetween, are opposed to each other in the common width direction. The flow restricting passage section opens in the first passage wall surface. The second passage wall surface is concavely curved relative to the first passage wall surface toward the flow restricting passage section, so that the passage width of the communication passage section is progressively reduced toward the flow restricting passage section within a predetermined range that is equal to or smaller than the passage width of the pressurizing passage.
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