公开(公告)号：US09638145B2

公开(公告)日：2017-05-02

申请号：US14640143

申请日：2015-03-06

Applicant: DENSO CORPORATION

Inventor： Tomohiro Itoh ,  Shigeru Hasegawa ,  Kosei Takagi ,  Ryoyu Kishi

IPC: F02M25/08

CPC classification number: F02M25/089 ,  F02M25/0809 ,  F02M25/0818 ,  F02M25/0872

Abstract: A housing receiving a switching valve, a pressure sensor, and a pump includes a tubular portion having an inner wall provided with a support portion into which an attachment portion is inserted. The pump includes a pump portion and a motor portion which are connected to the attachment portion. The support portion receives an elastic member abutting on the attachment portion. The elastic member prevents a vibration generated due to an operation of the pump from being transmitted to the tubular portion. Since the pump is supported by a cover through a pressure detection pipe including a pressure detection passage and is supported by the tubular portion through the elastic member and the support portion, the pump prevents from vibrating by its weight. Therefore, a noise radiated out of the housing due to the vibration transmitted from the pump to the housing can be reduced.

公开(公告)号：US09239033B2

公开(公告)日：2016-01-19

申请号：US13970901

申请日：2013-08-20

Applicant: DENSO CORPORATION

Inventor： Shigeru Hasegawa ,  Tomohiro Itoh ,  Kosei Takagi ,  Makoto Kaneko

IPC: F02M25/08

CPC classification number: F02M25/08 ,  F02M25/0818

Abstract: An ECU controls a selector valve so as to connect a first pump passage and a second pump passage, and determines whether a fuel vapor leak from a fuel tank is in an allowable range based on a pressure in the fuel tank which is detected by a pressure sensor while a pump is driven to decrease a pressure in the fuel tank. The ECU opens a purge valve, whereby the fuel vapor adsorbed by a canister is introduce into an engine through an intake passage. The ECU controls the selector valve to connect a first pump passage and the second pump passage so as to circulate an atmospheric air in the pump while the purge valve is opened to introduce the fuel vapor into the internal combustion engine, whereby a foreign matter in the pump can be removed.

Abstract translation: ECU控制选择阀以连接第一泵通道和第二泵通道，并且基于由压力检测到的燃料箱中的压力来确定来自燃料箱的燃料蒸汽泄漏是否在容许范围内 传感器，同时驱动泵来降低燃料箱中的压力。 ECU打开吹扫阀，由此吸附的燃料蒸汽通过进气通道引入发动机。 ECU控制选择阀以连接第一泵通道和第二泵通道，以便在打开排气阀的同时使大气中的空气循环，以将燃料蒸气引入内燃机中，由此在 泵可以拆卸。

公开(公告)号：US10156208B2

公开(公告)日：2018-12-18

申请号：US15738241

申请日：2016-06-16

Applicant: DENSO CORPORATION

Inventor： Ryoyuu Kishi ,  Yasuo Kato ,  Shigeru Hasegawa ,  Tomohiro Itoh ,  Makoto Kaneko ,  Kosei Takagi

IPC: F02M25/08

Abstract: An inspection apparatus includes a pressure sensor, a reference orifice, a pump, and a switching valve. The reference orifice is disposed in a first communication passage communicating a pressure passage receiving the pressure sensor, with a tank passage communicating with a fuel tank. The pump depressurizing or pressurizing the pressure passage includes an intake port and a discharge port, and one of which communicates with an atmospheric passage communicating with the atmosphere and the other one communicates with the pressure passage. The switching valve and switches between a state shutting off a communication of a second communication passage that leads to the pressure passage and passages other than the pressure passage and communicating the atmospheric passage with the tank passage and a state shutting off a communication of the atmospheric passage and passages other than the pump and the atmosphere and communicating the second communication passage with the tank passage.

公开(公告)号：US09683524B2

公开(公告)日：2017-06-20

申请号：US14824166

申请日：2015-08-12

Applicant: DENSO CORPORATION

Inventor： Kosei Takagi ,  Shigeru Hasegawa ,  Tomohiro Itoh

IPC: G01M3/00 ,  F02M25/08

CPC classification number: F02M25/0818 ,  F02M25/089

Abstract: A filter element is accommodated in a filter case. A housing is affixed to the filter case. A partition plate is located between the filter case and the housing. A switching valve is equipped in the housing. The switching valve includes a solenoid actuator, a valve, and a valve seat member. A vibration transmission member is located on one side in a driving direction of the valve relative to the valve seat member. The vibration transmission member is in contact with the switching valve at one end and is in contact with the partition plate at the other end. The vibration transmission member transmits oscillation, which is caused when the valve is seated on the valve seat, to the filter element through the partition plate.

公开(公告)号：US09140197B2

公开(公告)日：2015-09-22

申请号：US14247515

申请日：2014-04-08

Applicant: DENSO CORPORATION

Inventor： Shinya Nakata ,  Kazuhiro Sasao ,  Takashi Ooga ,  Takehiro Tanaka ,  Kosei Takagi ,  Yuusuke Yasuki ,  Shuhei Oe

IPC: F01L1/34 ,  F02D13/02 ,  F01L31/06

CPC classification number: F02D13/02 ,  F01L1/3442 ,  F01L31/06 ,  F01L2001/34423 ,  F01L2001/34426 ,  F01L2001/34453 ,  F01L2013/116 ,  Y02T10/18

Abstract: A valve timing control apparatus includes a temperature sensing member which expands at a main lock phase when a temperature of an engine is higher than or equal to a predetermined temperature so as to prohibit a main lock component from moving out of a main lock hole to a guide slot. The temperature sensing member shrinks at the main lock phase when the temperature of the engine is lower than the predetermined temperature so as to allow the main lock component to move out of the main lock hole toward the guide slot.

Abstract translation: 气门正时控制装置包括温度检测构件，其在发动机的温度高于或等于预定温度时在主锁定阶段膨胀，以便禁止主锁定部件从主锁孔移出到 导槽 当发动机的温度低于预定温度时，温度感测部件在主锁定阶段收缩，从而允许主锁定部件朝向引导槽移出主锁定孔。

公开(公告)号：US09046060B2

公开(公告)日：2015-06-02

申请号：US13768646

申请日：2013-02-15

Applicant: Denso Corporation

Inventor： Kosei Takagi ,  Mitsuyuki Kobayashi

IPC: F02M25/08

CPC classification number: F02M25/08 ,  F02M25/0818

Abstract: An operation of a change valve is changeable between a valve closing state, in which the change valve is closed to close connection between a pump passage and a canister passage and to open connection between an atmosphere passage and the canister passage, and a valve opening state, in which the change valve is opened to open the connection between the pump passage and the canister passage and to close the connection between the atmosphere passage and the canister passage. An ECU determines that the change valve is abnormal when a value, which is obtained by subtracting a second reference pressure measured in an (n−1)th execution of a fuel vapor leakage sensing process from a first reference pressure measured in an nth execution of the fuel vapor leakage sensing process, is equal to or larger than a predetermined threshold value.

Abstract translation: 换向阀的操作可以在闭阀状态之间改变，在该关闭状态下，换向阀关闭以闭合泵通道和罐通道之间的连接，并且打开大气通道和罐通道之间的连接，以及阀打开状态 ，其中打开所述换向阀以打开所述泵通道和所述罐通道之间的连接并且关闭所述大气通道和所述罐通道之间的连接。 当通过从第n次执行中测量的第（n-1）次执行燃料蒸汽泄漏检测处理中测量的第二参考压力减去获得的值，ECU确定换向阀异常 燃料蒸气泄漏检测处理等于或大于预定阈值。

公开(公告)号：US10422303B2

公开(公告)日：2019-09-24

申请号：US14852165

申请日：2015-09-11

Applicant: DENSO CORPORATION

Inventor： Ryoyu Kishi ,  Shigeru Hasegawa ,  Tomohiro Itoh ,  Kosei Takagi

IPC: F04C29/12 ,  F02M25/08 ,  F04C18/344

Abstract: A first plate portion covers one opening of a pump chamber of a tubular portion, and a second plate portion covers the other opening of the pump chamber along a center axis of the tubular portion. A hole forming portion is equipped to an outside of the tubular portion to form a connection hole. A length of the hole forming portion along the center axis is less than or equal to a length of the tubular portion along the center axis. A first imaginary line connects a center of an outer opening of the connection hole with a point on the center axis. The first imaginary line intersects perpendicularly with the center axis. A length of the connection hole in a direction perpendicular to both the first imaginary line and the center axis is greater than a length of the connection hole along the center axis.

公开(公告)号：US09567946B2

公开(公告)日：2017-02-14

申请号：US14590160

申请日：2015-01-06

Applicant: DENSO CORPORATION

Inventor： Shigeru Hasegawa ,  Tomohiro Itoh ,  Kosei Takagi ,  Ryoyu Kishi

IPC: F04B49/00 ,  F02M25/08 ,  F16J15/06

CPC classification number: F02M25/0809 ,  F02M25/0836 ,  F16J15/06 ,  Y10T137/85986

Abstract: A first tubular portion has a cross sectional shape which is a non-perfect circle relative to an axis thereof. A second tubular portion is disposed concentrically with the first tubular portion. The second tubular portion has a cross sectional shape relative to its axis, which is a congruent shape of the cross sectional shape of the first tubular portion. A sealing member is disposed between the first tubular portion and the second tubular portion for sealing therebetween. The sealing member has a cross sectional shape of which length parallel to its axis is greater than length which is perpendicular to the axis.

Abstract translation: 第一管状部分具有相对于其轴线的非完整圆的横截面形状。 第二管状部分与第一管状部分同心地设置。 第二管状部分具有相对于其轴线的横截面形状，其是第一管状部分的横截面形状的一致形状。 密封构件设置在第一管状部分和第二管状部分之间用于在其间密封。 密封构件具有与其轴线平行的长度大于垂直于轴线的长度的横截面形状。

公开(公告)号：US20160160809A1

公开(公告)日：2016-06-09

申请号：US14959504

申请日：2015-12-04

Applicant: DENSO CORPORATION

Inventor： Shigeru HASEGAWA ,  Yasuo Kato ,  Tomohiro Itoh ,  Kosei Takagi ,  Ryoyu Kishi

IPC: F02M25/08 ,  F04C29/00 ,  F04C18/344

CPC classification number: F02M25/0818 ,  F02M25/0854 ,  F04C18/3442 ,  F04C18/3448 ,  F04C29/0085 ,  F04C2210/1044 ,  F05C2253/20

Abstract: The vane pump has a pump chamber, in which a first inner plate and a second inner plate are movably accommodated at each of axial ends of a rotor. In a case that an electric motor is arranged at a lower side of the vane pump, the first inner plate is moved in a direction to the second inner plate by a force of gravity, so that the first inner plate is brought into contact with a first axial end of the rotor. As a result, an upper side axial open end of each pumping room, which is respectively defined by multiple vanes, is closed by the first inner plate. An amount of air leaking from one of the pumping rooms to the other pumping rooms can be reduced.

Abstract translation: 叶片泵具有泵室，其中第一内板和第二内板可移动地容纳在转子的每个轴向端部处。 在电动机布置在叶片泵的下侧的情况下，第一内板通过重力沿与第二内板的方向移动，使得第一内板与第一内板接触 转子的第一轴向端。 结果，由多个叶片分别限定的每个泵房的上侧轴向开口端由第一内板封闭。 可以减少从其中一个抽水室泄漏到另一个抽水室的空气量。

公开(公告)号：US09097216B2

公开(公告)日：2015-08-04

申请号：US13945973

申请日：2013-07-19

Applicant: DENSO CORPORATION

Inventor： Tomohiro Itoh ,  Kosei Takagi ,  Shigeru Hasegawa

IPC: F02M25/08

CPC classification number: F02M25/0854 ,  F02M25/0809 ,  F02M25/0818

Abstract: A fuel vapor purge device includes a canister connected to an internal combustion engine and a fuel tank via a purge passage to adsorb and hold a part of fuel vapor, a switch valve connected to the canister and to an atmosphere, and a pump connected to the switch valve via a pump passage and to the atmosphere via an atmosphere passage. The pump is capable of depressurizing or pressurizing an interior of the fuel tank, and the switch valve switches connection of the canister between with the atmosphere and with the pump. The fuel vapor purge device further includes a seal valve provided in the pump passage to open or close the pump passage depending on a pressure in the atmosphere passage.

Abstract translation: 燃料蒸气吹扫装置包括通过净化通道连接到内燃机和燃料箱的罐，用于吸附和保持燃料蒸汽的一部分，连接到罐和大气的开关阀，以及连接到罐的泵 开关阀通过泵通道并通过大气通道传递到大气。 泵能够对燃料箱的内部进行减压或加压，并且开关阀切换罐与大气和泵之间的连接。 燃料蒸气吹扫装置还包括设置在泵通道中的密封阀，以根据大气通道中的压力打开或关闭泵通道。