公开(公告)号：US20140060498A1

公开(公告)日：2014-03-06

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：US20180187632A1

公开(公告)日：2018-07-05

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

CPC classification number: F02M25/0809 ,  F02M25/08 ,  F02M25/0818 ,  F02M25/0872 ,  F02M25/089 ,  F02M2025/0845

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：US20170328806A1

公开(公告)日：2017-11-16

申请号：US15592671

申请日：2017-05-11

Applicant: DENSO CORPORATION

Inventor： Makoto KANEKO ,  Yasuo KATO

IPC: G01M3/26 ,  B60K15/035 ,  F02M25/08 ,  F02M37/04 ,  B60K15/03

CPC classification number: G01M3/26 ,  B60K15/03504 ,  B60K2015/0321 ,  B60K2015/03256 ,  B60K2015/03328 ,  B60K2015/03514 ,  F02M25/0818 ,  F02M25/0854 ,  F02M25/089 ,  F02M37/045

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.

公开(公告)号：US20150135805A1

公开(公告)日：2015-05-21

申请号：US14524317

申请日：2014-10-27

Applicant: DENSO CORPORATION

Inventor： Makoto KANEKO

IPC: G01M3/26 ,  F02M25/08

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.

Abstract translation: 第一壳体具有将第一内部与罐连通的罐通道。 第二壳体具有将第二内部与大气连通的大气通道。 切换阀容纳在第一壳体中以选择性地压力检测通道和大气通道中的一个来切换罐通道的连通。 切换阀旁通通道将罐通道与压力检测通道连通，并绕过切换阀。 分隔构件将第一内部与第二内部分开，并具有使第一内部与第二内部连通的连通孔。 接触构件装配到分隔构件的端部并且与第一壳体和第二壳体中的至少一个接触。 分隔构件与第一壳体和第二壳体形成间隙。

公开(公告)号：US20130263648A1

公开(公告)日：2013-10-10

申请号：US13856742

申请日：2013-04-04

Applicant: DENSO CORPORATION

Inventor： Makoto KANEKO

IPC: G01M3/32

CPC classification number: G01M3/3272 ,  F16K1/36 ,  Y10T137/8593

Abstract: A valve device includes a first valve body including a first seat portion that defines a first opening, a shaft reciprocatable in a direction of a center axis of the first opening, and a first valve member supported by the shaft to contact or be separated from the first seat portion in accordance with the reciprocation of the shaft. The first valve member contacts the first seat portion in an entire circumference of the first seat portion with deforming elastically due to a force from the first seat portion when the first valve member contacts the first seat portion in a state where a reciprocation direction of the shaft is inclined from the center axis of the first opening. Accordingly, air sealing of the valve device can be ensured even when the reciprocation direction of the shaft is inclined from the center axis of the first opening.

Abstract translation: 阀装置包括：第一阀体，其包括限定第一开口的第一座部分，可在第一开口的中心轴线方向上往复运动的轴;以及由轴支撑以接触或与其分离的第一阀构件 第一座椅部分根据轴的往复运动。 第一阀构件在第一座椅部分的整个圆周中接触第一座部分，当第一阀构件在轴的往复运动方向接触第一座部时，由于来自第一座部的力而弹性地变形 从第一开口的中心轴倾斜。 因此，即使当轴的往复运动方向从第一开口的中心轴线倾斜时，也可以确保阀装置的空气密封。