公开(公告)号：US20180045127A1

公开(公告)日：2018-02-15

申请号：US15583326

申请日：2017-05-01

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: F02D41/00 ,  F02M25/08

CPC classification number: F02D41/003 ,  B60K15/035 ,  B60K15/03519 ,  B60K2015/03217 ,  B60K2015/03296 ,  B60K2015/03576 ,  B60K2015/03585 ,  F02M25/0809 ,  F02M25/0854 ,  F02M25/089

Abstract: The present disclosure provides a fuel vapor processing system. The system includes a tank passage, a canister, a purge passage, an air passage, a purge valve, a controller, a fuel vapor processing portion, a pressure sensor, a fuel refill detecting portion, and an abnormality detecting portion. The fuel refill detecting portion detects that fuel refill to the fuel tank is started or fuel refill to the fuel tank is being performed by executing a fuel refill detecting process. An abnormality detecting portion detects, by executing an abnormality detecting process, a clogged situation where the tank passage is clogged based on a signal from the pressure sensor received after the fuel refill detecting portion detected that the fuel refill to the fuel tank was started.

公开(公告)号：US20150330514A1

公开(公告)日：2015-11-19

申请号：US14713200

申请日：2015-05-15

Applicant: DENSO CORPORATION

Inventor： Hiroyuki HARADA ,  Yuichiro MIURA

IPC: F16K1/52 ,  F16K31/06 ,  F16K31/12 ,  F02M25/08

CPC classification number: F16K1/526 ,  B60K15/03504 ,  B60K15/03519 ,  B60K2015/03302 ,  B60K2015/03576 ,  B60K2015/03585 ,  F02M25/08 ,  F02M25/0836 ,  F02M25/089 ,  F02M2025/0845 ,  F16K1/34 ,  F16K1/52 ,  F16K27/029 ,  F16K31/06 ,  F16K31/0655 ,  F16K31/12 ,  Y10T137/7754 ,  Y10T137/88062

Abstract: A first valve chamber, which receives a valve assembly of a tank closing solenoid valve, and a second valve chamber, which receives a valve assembly of a pressure responsive valve, are formed between a first flow passage and a second flow passage of a first housing by fitting a second peripheral wall of a second housing into a radially inner side of a first peripheral wall of the first housing. Thereby, it is not required to heat-weld and bond between a connecting end surface of the first housing and a connecting end surface of the second housing.

Abstract translation: 接收阀闭合电磁阀的阀组件的第一阀室和接收压力响应阀的阀组件的第二阀室形成在第一壳体的第一流动通道和第二流动通道之间， 通过将第二壳体的第二周壁装配到第一壳体的第一周壁的径向内侧。 因此，不需要在第一壳体的连接端面与第二壳体的连接端面之间进行热焊接。

公开(公告)号：US20150226348A1

公开(公告)日：2015-08-13

申请号：US14619333

申请日：2015-02-11

Applicant: DENSO CORPORATION

Inventor： Hirofumi ONODERA ,  Yuichiro MIURA

IPC: F16K31/06

CPC classification number: F16K39/024 ,  F02M25/0836 ,  F02M2025/0845 ,  F16K31/0655

Abstract: A two-stage electro-magnetic valve maintains a pressing force applied onto a switch valve body from a press member after a lifting of an open-close valve body from a valve seat by an introduction of a pressure of a valve chamber. In such manner, the switch valve body need not be put in a pressure receiving state when the switch valve body is completely closed. In other words, it is not necessary for a pressure receiving diameter of the switch valve body to be smaller than a pressure receiving diameter of the open-close valve body. Such configuration increases design freedom of the pressure receiving diameter for the open-close valve body because it separates the diameter of the valve body from a diameter restriction of the switching valve body, which allows both valve bodies to have the same diameter, which maximizes the effect of a pressure cancel mechanism.

Abstract translation: 两级电磁阀通过引入阀室的压力而从打开关闭阀体从阀座提起后，保持从压力构件施加到开关阀体上的按压力。 以这种方式，当开关阀体完全关闭时，开关阀体不需要处于受压状态。 换句话说，开关阀体的受压直径不必小于开关阀体的受压直径。 这种构造增加了开关阀体的压力接收直径的设计自由度，因为它将阀体的直径与切换阀体的直径限制分开，这允许两个阀体具有相同的直径，这使得阀体的直径最大化 压力消除机构的作用。

公开(公告)号：US20200282825A1

公开(公告)日：2020-09-10

申请号：US16884080

申请日：2020-05-27

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: B60K15/035 ,  B67D7/04

Abstract: A tank passage is connected at its one end to a fuel tank, which stores fuel. A canister is connected to the other end of the tank passage and adsorbs evaporated fuel generated by evaporation of fuel in the fuel tank. An electric control valve is operable with current supply to control an amount of fluid flowing through the tank passage by varying an open rate of the tank passage. A fill-up detection part detects that the fuel tank is filled up with fuel based on a fuel level in the fuel tank. A control part controls an operation of the electric control valve. The control part controls the electric control valve in the valve closing direction, which decreases the open rate, when the fill-up detection part detects that the fuel tank is filled up with fuel.

公开(公告)号：US20190041292A1

公开(公告)日：2019-02-07

申请号：US16037329

申请日：2018-07-17

Applicant: DENSO CORPORATION

Inventor： Keiichirou ISHIHARA ,  Yuichiro MIURA ,  Ryoyu KISHI ,  Tomohiro ITOH

IPC: G01M3/28

Abstract: A fuel vapor processing device includes a canister, a first purge pipe that forms a first purge path that communicatively connects the inside of the canister and the inside of a fuel tank, a pressure pipe that forms a pressure detection path configured to communicatively connect a first switching valve and a pump, the first switching valve, a sealing valve disposed in the first purge pipe and configured to isolate the inside of the canister from the inside of the fuel tank, a differential pressure sensor, and an ECU. The differential pressure sensor is capable of detecting a difference between a pressure of the first purge path and a pressure of the pressure detection path. The ECU determines presence or absence of a fuel vapor leak while controlling the first switching valve, the pump, and the sealing valve based on a signal output from the differential pressure sensor.

公开(公告)号：US20180272861A1

公开(公告)日：2018-09-27

申请号：US15910154

申请日：2018-03-02

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: B60K15/035 ,  B67D7/04

CPC classification number: B60K15/03519 ,  B60K2015/0319 ,  B60K2015/03217 ,  B60K2015/03302 ,  B60K2015/03361 ,  B60K2015/03368 ,  B60K2015/03514 ,  B60K2015/03576 ,  B60K2015/0358 ,  B60K2015/0359 ,  B67D7/048 ,  B67D7/0492

Abstract: A tank passage is connected at its one end to a fuel tank, which stores fuel. A canister is connected to the other end of the tank passage and adsorbs evaporated fuel generated by evaporation of fuel in the fuel tank. An electric control valve is operable with current supply to control an amount of fluid flowing through the tank passage by varying an open rate of the tank passage. A fill-up detection part detects that the fuel tank is filled up with fuel based on a fuel level in the fuel tank. A control part controls an operation of the electric control valve. The control part controls the electric control valve in the valve closing direction, which decreases the open rate, when the fill-up detection part detects that the fuel tank is filled up with fuel.

公开(公告)号：US20170036532A1

公开(公告)日：2017-02-09

申请号：US15227087

申请日：2016-08-03

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: B60K15/035 ,  F02D41/00 ,  F02M25/08

CPC classification number: B60K15/03519 ,  B60K15/03504 ,  B60K2015/03302 ,  B60K2015/03514 ,  F02D41/004 ,  F02M25/0836 ,  F02M25/0854 ,  F02M25/0872 ,  F02M2025/0845

Abstract: A tank sealing valve arranged in a passage network through which a fluid flows between a fuel tank and a canister includes a first valve unit and a second valve unit. A first port and a second port of three ports included in an outer case body of the first valve unit are open toward a first chamber of two chambers divided by a diaphragm or a bellows of the first valve unit, and a third port of the three ports is open toward a second chamber of the two chambers. A valve body of the first valve unit includes a through passage penetrating a valve portion and a column portion of the valve body. The valve portion communicates with the first port and the second chamber through the through passage in a case where the first port is closed. The second valve unit opens and closes the third port.

Abstract translation: 布置在流体网络中的储罐密封阀，流体在燃料箱和罐之间流动的通道网络包括第一阀单元和第二阀单元。 包括在第一阀单元的外壳体中的三个端口的第一端口和第二端口朝向由第一阀单元的隔膜或波纹管分隔开的两个室的第一室敞开，并且三个第三端口 端口朝向两个室的第二室打开。 第一阀单元的阀体包括穿过阀体的通孔和阀体的柱部。 在第一端口关闭的情况下，阀部分通过贯通通道与第一端口和第二室连通。 第二阀单元打开和关闭第三端口。

公开(公告)号：US20140183389A1

公开(公告)日：2014-07-03

申请号：US14197827

申请日：2014-03-05

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: F16K31/06

CPC classification number: F16K31/0675 ,  F16K31/06 ,  F16K31/0658 ,  H01F2007/085

Abstract: An electromagnetic valve includes a valve seat, a valving element, and a solenoid part. The valve seat has an annular shape and defines a valve hole. The solenoid part includes a coil, a core guide part, a fixed core, and a movable core. The coil becomes an electromagnet upon energization thereof. The core guide part is arranged radially inward of the coil. The movable core is accommodated and reciprocated inside the core guide part in accordance with whether the electromagnet is turned on or off. The valving element moves integrally with the movable core to open or close the valve hole. The core guide part includes a magnetic unbalance part where magnetic force applied between the core guide part and the movable core is different between on one side and the other side of the core guide part in its radial direction.

Abstract translation: 电磁阀包括阀座，阀元件和螺线管部件。 阀座具有环形形状并且限定了阀孔。 螺线管部件包括线圈，芯引导部，固定芯和可动芯。 线圈在通电时变为电磁铁。 芯引导部分布置在线圈的径向内侧。 可动铁芯根据电磁铁是否接通而被容纳在芯引导部分的内部并往复运动。 阀元件与可动铁芯一体移动以打开或关闭阀孔。 芯引导部包括在芯引导部和可动芯之间施加的磁力在芯引导部的径向的一侧和另一侧之间不同的磁不平衡部。

公开(公告)号：US20220074364A1

公开(公告)日：2022-03-10

申请号：US17466962

申请日：2021-09-03

Applicant: DENSO CORPORATION

Inventor： Yuichiro MIURA

IPC: F02D41/22 ,  F02M25/08 ,  F02M35/10

Abstract: An evaporative fuel processing device for determining a leak of an evaporation piping system also determined pump abnormality by including a pump, a pressure sensor and an abnormality determiner, i.e., by pressuring/de-pressuring the system to a positive/negative value against an atmospheric pressure for leak determination, by detecting a pressure of the system, and by determining a leak hole in a normal leak determination mode based on an absolute value of the detected pressure reaching or not reaching a target value after pump operation and based on an assumption that the pump is normal. Specifically, after lapse of a determination time from a pump stop, the absolute value equal to or less than a normal leak determination threshold value is determined that a leak hole is present in the system. Further, the absolute value not reaching the target value even after pump operation triggers a pump abnormality determination mode.

公开(公告)号：US20160370812A1

公开(公告)日：2016-12-22

申请号：US15157659

申请日：2016-05-18

Applicant: DENSO CORPORATION

Inventor： Hiroyuki HARADA ,  Yuichiro MIURA ,  Hirofumi ONODERA ,  Kimio UCHIDA

IPC: G05D16/10 ,  F16K31/122 ,  F02M25/08 ,  F16K31/06

CPC classification number: G05D16/106 ,  B60K15/03519 ,  B60K2015/03302 ,  B60K2015/03585 ,  F02M25/0836 ,  F02M25/0854 ,  F16K1/526 ,  F16K31/06 ,  F16K31/0644 ,  F16K31/1221 ,  F16K31/1226 ,  G05D16/103 ,  G05D16/2086

Abstract: A valve device includes a valve seat forming member, a case, a first O-ring, and a second O-ring. The valve seat forming member is fit into a passage defining and forms a valve seat. The case houses an electromagnetic solenoid and is connected to the passage defining member. The first O-ring is interposed between an inner circumferential surface of the passage defining member and an outer circumferential surface of the valve seat forming member. The first O-ring prohibits the fluid from flowing through a space between the passage defining member and the valve seat forming member when the main valve body seats on the valve seat. The second O-ring is interposed between the case and the passage defining member. The second O-ring prohibits the fluid from flowing from the passage to an outside of the passage defining member.

Abstract translation: 阀装置包括阀座形成部件，壳体，第一O形环和第二O形环。 阀座形成构件配合到限定并形成阀座的通道中。 壳体容纳电磁螺线管并且连接到通道限定构件。 第一O形环插入在通道限定构件的内周表面和阀座形成构件的外周表面之间。 当主阀体位于阀座上时，第一O形环禁止流体流过通道限定构件和阀座形成构件之间的空间。 第二O形环插入在壳体和通道限定构件之间。 第二O形环禁止流体从通道流到通道限定构件的外部。