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1.发明授权公开(公告)号：US10234356B2
公开(公告)日：2019-03-19
申请号：US15592671
申请日：2017-05-11
Applicant: DENSO CORPORATION
Inventor： Makoto Kaneko , Yasuo Kato
Abstract: An evaporation leakage checking system includes a pump, a pump passage unit, a tank passage unit, a specified passage unit, an atmosphere passage unit, a flow-passage area changing unit, an atmosphere valve unit, a pressure sensing unit, and a control unit. The control unit includes a calculating unit that calculates a leakage threshold, based on a first pressure, a first area, an Nth pressure, an Nth area, and a reference area that is predetermined, and a leakage checking unit that activates the pump, closes the atmosphere passage unit by changing the flow-passage area of the atmosphere passage unit by using the atmosphere valve unit, and checks the existence of the evaporation leakage based on the leakage threshold and a checking pressure that is the pressure sensed by the pressure sensor in a case where a communication between the tank passage unit and the pump passage unit is allowed.
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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。
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Patent Agency Ranking
公开(公告)号：US20140346719A1
公开(公告)日：2014-11-27
申请号：US14261463
申请日：2014-04-25
Applicant: DENSO CORPORATION
Inventor： Makoto Kaneko , Taiki Yasuzaka
IPC: F16F15/04
Abstract: A vibration insulating member is equipped between one component and an other component. The vibration insulating member includes a through hole forming portion and a contact portion. The through hole forming portion is formed of an elastic material to have a through hole in which a connection member is inserted to connect the one component with the other component. The contact portion is projected radially inward from an inner wall of the through hole forming portion. The contact portion has an inner wall on a radially inside. When the connection member is inserted in the through hole, an outer wall of the connection member forms a gap with the inner wall of the through hole forming portion and is in contact with the inner wall of the contact portion.
Abstract translation: 在一个部件和另一个部件之间安装有隔振部件。 隔振构件包括通孔形成部分和接触部分。 通孔形成部分由弹性材料形成，以具有通孔，连接构件插入其中，以将一个部件与另一个部件连接。 接触部分从通孔形成部分的内壁径向向内突出。 接触部分在径向内侧具有内壁。 当连接构件插入通孔时，连接构件的外壁与通孔形成部分的内壁形成间隙，并与接触部分的内壁接触。
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公开(公告)号：US11286889B2
公开(公告)日：2022-03-29
申请号：US16710579
申请日：2019-12-11
Applicant: DENSO CORPORATION
Inventor： Makoto Kaneko
Abstract: In an evaporative fuel treatment device, a differential pressure specifying unit specifies a differential pressure between a pressure in a diagnosis target system and the atmosphere, and a pressure target setting unit sets a pressure target value so that the differential pressure attains a predetermined differential pressure value. A pump pressurizes or depressurizes the pressure in the diagnosis target system to the pressure target value, and a leakage diagnosis unit performs a leakage diagnosis based on a pressure change relation value related to the pressure change in the diagnosis target system and the leakage diagnosis threshold value. The fuel partial pressure estimation unit estimates a first partial pressure of fuel vapor in the fuel tank from a tank inside concentration and a tank absolute pressure of a specific component. A corresponding partial pressure specifying unit specifies a second partial pressure of the fuel vapor in the fuel tank based on a relation between the tank absolute pressure and the first partial pressure when the second partial pressure of the fuel vapor in the fuel tank when the pressure is increased or reduced to the target pressure value. A comparison unit compares the first partial pressure and the second partial pressure. A correction unit corrects, based on a comparison result of the comparison unit, a leakage diagnosis threshold value or the pressure change relation value used for the leakage diagnosis.
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公开(公告)号：US09309949B2
公开(公告)日：2016-04-12
申请号：US14261463
申请日：2014-04-25
Applicant: DENSO CORPORATION
Inventor： Makoto Kaneko , Taiki Yasuzaka
Abstract: A vibration insulating member is equipped between one component and an other component. The vibration insulating member includes a through hole forming portion and a contact portion. The through hole forming portion is formed of an elastic material to have a through hole in which a connection member is inserted to connect the one component with the other component. The contact portion is projected radially inward from an inner wall of the through hole forming portion. The contact portion has an inner wall on a radially inside. When the connection member is inserted in the through hole, an outer wall of the connection member forms a gap with the inner wall of the through hole forming portion and is in contact with the inner wall of the contact portion.
Abstract translation: 在一个部件和另一个部件之间安装有隔振部件。 隔振构件包括通孔形成部分和接触部分。 通孔形成部分由弹性材料形成，以具有通孔，连接构件插入其中，以将一个部件与另一个部件连接。 接触部分从通孔形成部分的内壁径向向内突出。 接触部分在径向内侧具有内壁。 当连接构件插入通孔时，连接构件的外壁与通孔形成部分的内壁形成间隙，并与接触部分的内壁接触。
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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.
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公开(公告)号：US09644577B2
公开(公告)日：2017-05-09
申请号：US14524317
申请日：2014-10-27
Applicant: DENSO CORPORATION
Inventor： Makoto Kaneko
CPC classification number: F02M25/0818 , G01M3/26
Abstract: A first housing has a canister passage communicating a first interior with a canister. A second housing has an atmospheric passage communicating a second interior with an atmosphere. A switching valve is accommodated in the first housing to switch communication of the canister passage with selectively one of a pressure detection passage and the atmospheric passage. A switching valve bypass passage communicates the canister passage with the pressure detection passage and bypasses the switching valve. A partition member separates the first interior from the second interior and has a communication hole communicating the first interior with the second interior. A contact member is equipped to an end of the partition member and is in contact with at least one of the first housing and the second housing. The partition member forms a clearance with the first housing and the second housing.
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