公开(公告)号：US5398660A

公开(公告)日：1995-03-21

申请号：US71010

申请日：1993-06-02

申请人： Nobuhiko Koyama ,  Kazuto Maeda ,  Yuzi Ishiguro ,  Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Shinichiro Kamohara

发明人： Nobuhiko Koyama ,  Kazuto Maeda ,  Yuzi Ishiguro ,  Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Shinichiro Kamohara

IPC分类号： F02M25/08

CPC分类号： F02M25/0854

摘要： A fuel vapor purging system includes a container in which a set of divided chambers are formed by partition walls. Absorbent is disposed in the divided chambers. The divided chambers are sequentially connected to form a zigzag passage. Fuel vapor can enter the container from a fuel tank via a vapor line connecting the fuel tank and the container. In the container, an end of the vapor line faces the divided chamber which occupies an end of the set of the divided chambers. In the container, the fuel vapor is absorbed by the absorbent. Air can escape from the container via an opening in the container. The fuel vapor can be separated from the absorbent. The separated fuel vapor can be drawn into a suitable drawing device such as an engine air induction device via a purge line connecting the container and the drawing device. Fresh air can flow into the container via an air inlet provided on the container. Among the divided chambers, at least the divided chamber which occupies the end of the set of the divided chambers has a cross-sectional area equal to or smaller than 40 cm.sup.2.

摘要翻译： 燃料蒸气吹扫系统包括容器，其中一组分隔室由分隔壁形成。 吸收剂设置在分隔的室中。 分开的室依次连接形成之字形通道。 燃料蒸汽可以通过连接燃料箱和容器的蒸汽管线从燃料箱进入容器。 在容器中，蒸汽管线的一端面对分隔的室，该分隔室占据了分隔室的一端的一端。 在容器中，燃料蒸气被吸收剂吸收。 空气可以通过容器中的开口从容器逸出。 燃料蒸气可以与吸收剂分离。 分离出的燃料蒸汽可以通过连接容器和抽拉装置的清除管线被吸入合适的绘图装置，例如发动机空气感应装置。 新鲜空气可以通过设置在容器上的空气入口流入容器。 在分隔室中，至少分隔室的占据分隔室的一端的分隔室的截面积等于或小于40cm 2。

公开(公告)号：US5915364A

公开(公告)日：1999-06-29

申请号：US866109

申请日：1997-05-30

申请人： Naoya Katou ,  Hideaki Itakura ,  Tohru Yoshinaga ,  Tokio Kohama ,  Katsuo Azegami ,  Kazuto Maeda ,  Nobuhiko Koyama

发明人： Naoya Katou ,  Hideaki Itakura ,  Tohru Yoshinaga ,  Tokio Kohama ,  Katsuo Azegami ,  Kazuto Maeda ,  Nobuhiko Koyama

IPC分类号： F02M25/08 ,  F02M37/04

CPC分类号： F02M25/0854

摘要： A canister for use in an evaporative emission control system of an automotive vehicle is provided which includes a box-like casing, an inlet port formed in one end wall of the casing through which fuel vapors generated within a fuel tank are drawn into the canister, and a plurality of vapor-adsorbing passages each of which is filled with activated carbon and has a given length through which the fuel vapors drawn through the inlet port flow. The vapor-adsorbing passages are all arranged within said casing in parallel to each other. This arrangement allows the casing to be of a flat shape which facilitates easy installation of the canister within a flat space around a fuel tank.

摘要翻译： 提供一种用于机动车辆的蒸发排放控制系统的罐，其包括盒状壳体，形成在壳体的一个端壁中的入口，通过该入口端口在燃料箱内产生的燃料蒸汽被吸入罐中， 以及多个蒸气吸附通道，每个通过活性炭填充并且具有给定的长度，通过该入口端口吸入的燃料蒸气流过该长度。 蒸汽吸附通道全部彼此平行布置在所述壳体内。 这种布置允许壳体是平坦的形状，其有利于容易地将罐安装在燃料箱周围的平坦空间内。

公开(公告)号：US5743943A

公开(公告)日：1998-04-28

申请号：US677370

申请日：1996-07-05

申请人： Kazuto Maeda ,  Nobuhiko Koyama ,  Naoya Kato

发明人： Kazuto Maeda ,  Nobuhiko Koyama ,  Naoya Kato

IPC分类号： B01D53/04

CPC分类号： B01D53/0415 ,  B01D2253/102 ,  B01D2257/702 ,  B01D2259/4145 ,  B01D2259/4516 ,  B01D2259/4566 ,  B01D53/0446

摘要： A canister which can control the diffusion of evaporated fuel to surely prevent the evaporated fuel from blowing through into the atmosphere has a main chamber having therein a first adsorbent layer for adsorbing evaporated fuel and including an evaporated fuel lead-in port and a purge port, a subchamber having therein a second adsorbent layer for adsorbing evaporated fuel and including an atmospheric air lead-in port, and an air chamber communicating with the main chamber and the subchamber are provided in a casing of a canister. The air chamber is divided into three parts: a first chamber at the side of the main chamber, a second chamber at the side of the subchamber and a third chamber between the first and second chambers. A nonlinear communication passage is formed inside of the third chamber by dividing the third chamber with a partition wall having its both ends opened to the first chamber and the second chamber respectively. Since the communication passage can be sufficiently long, a canister with both diffusion prevention and low pressure loss can be obtained.

摘要翻译： 能够控制蒸发燃料扩散的罐能确实地防止蒸发的燃料吹入大气中，其主室具有用于吸附蒸发的燃料的第一吸附剂层，并且包括蒸发的燃料引入口和净化口， 其中具有用于吸附蒸发燃料的第二吸附剂层和包括大气引入口的小室，以及与主室和子室连通的空气室设置在罐的壳体中。 空气室分为三部分：在主室一侧的第一室，在子室一侧的第二室和在第一和第二室之间的第三室。 通过将第三室分隔成两端分别敞开的第一室和第二室的分隔壁，在第三室内形成非线性连通通道。 由于连通通道可以足够长，所以可以获得具有防扩散和低压力损失的罐。

公开(公告)号：US5601065A

公开(公告)日：1997-02-11

申请号：US427908

申请日：1995-04-26

申请人： Hiroshi Tamura ,  Junya Morikawa ,  Kazuto Maeda ,  Nobuhiko Koyama

发明人： Hiroshi Tamura ,  Junya Morikawa ,  Kazuto Maeda ,  Nobuhiko Koyama

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02M37/00 ,  F02M37/04

CPC分类号： F02M25/08 ,  F02D41/0032 ,  F02M25/0809 ,  F02M25/0836 ,  F02D2200/0606

摘要： When refueling is started, a purge valve is closed, and power is supplied to a coil of a solenoid so that a constant pressure operating valve of an atmospheric escape valve is opened. When the temperature of the fuel tank rises while an engine is at a stop, fuel evaporation gas generates and the pressure within the fuel tank increases. When the differential pressure between the in-tank pressure and the atmospheric pressure increases, a first communication passage is opened, and the pressure is released to the outside. Thus, the pressure within the fuel tank can be maintained at an appropriately high pressure level while the vehicle is at a stop, and the quantity of the fuel evaporation gas generating while the vehicle is at a stop can be controlled.

摘要翻译： 当加油开始时，关闭排气阀，向螺线管的线圈供电，使得大气泄放阀的恒压操作阀打开。 当发动机处于停止状态时燃料箱的温度升高，产生燃料蒸发气体，燃料箱内的压力增大。 当舱内压力和大气压力之间的压差增加时，第一连通通道打开，并且压力释放到外部。 因此，能够在车辆停止时将燃料箱内的压力保持在适当的高压位置，并且可以控制在车辆停止时产生的燃料蒸发气体的量。

公开(公告)号：US5564398A

公开(公告)日：1996-10-15

申请号：US317365

申请日：1994-10-04

申请人： Kazuto Maeda ,  Nobuhiko Koyama ,  Hiroshi Tamura ,  Junya Morikawa

发明人： Kazuto Maeda ,  Nobuhiko Koyama ,  Hiroshi Tamura ,  Junya Morikawa

IPC分类号： F02M25/08 ,  F02M37/04

CPC分类号： F02M25/0854

摘要： A canister for preventing diffusion of fuel vapor to atmosphere is disclosed herein. The canister includes a first case having an adsorbent material, such as activated charcoal, therein and a second case also having an adsorbent material therein. The two cases are joined by a passage having a valve disposed therein. The valve regulates the airflow between the two cases. The first case is connected to the valve, a gas tank, and an engine, while the second case is connected to the valve and to atmosphere. During a refueling operation, the valve is operated so as to allow air to flow from the tank, through the first case and out to the atmosphere through the valve, without passing through the second case.

摘要翻译： 本文公开了一种用于防止燃料蒸气扩散到大气中的罐。 所述罐包括在其中具有吸附剂材料（例如活性炭）的第一壳体和在其中还具有吸附剂材料的第二壳体。 这两种情况通过其中设置有阀的通道连接。 阀调节两种情况下的气流。 第一种情况连接到阀门，气罐和发动机，而第二种情况则连接到阀门和大气。 在加油操作期间，阀被操作以允许空气从罐流过第一壳体并通过阀流出到大气中，而不通过第二壳体。

公开(公告)号：US5535719A

公开(公告)日：1996-07-16

申请号：US313836

申请日：1994-09-28

申请人： Junya Morikawa ,  Kazuto Maeda ,  Nobuhiko Koyama ,  Hiroshi Tamura

发明人： Junya Morikawa ,  Kazuto Maeda ,  Nobuhiko Koyama ,  Hiroshi Tamura

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02D41/04 ,  F02M3/06

CPC分类号： F02M25/08 ,  F02D41/0045 ,  F02D41/0042

摘要： A canister is provided between a fuel tank and an intake conduit of an engine so that fuel vapor generated in the tank and adsorbed in the canister is purged into the intake conduit. In correcting a fuel quantity in accordance with a purge quantity, the fuel quantity is compensated for by a canister piping condition such as a pressure loss and/or a purge delay. A first fuel correction coefficient is calculated from canister pressure, intake pressure and atmospheric pressure. The first coefficient may be calculated in association with an idling speed control value. A second fuel correction coefficient is calculated from changes in purge flow quantity and canister pressure. The second coefficient may be calculated in association with an air-fuel ratio feedback control value.

摘要翻译： 在燃料箱和发动机的进气管道之间设置有罐，使得在罐中产生并吸附在罐中的燃料蒸气被吹扫到进气管道中。 在根据吹扫量校正燃料量时，通过诸如压力损失和/或吹扫延迟的罐管道条件来补偿燃料量。 从罐压力，进气压力和大气压力计算第一燃料校正系数。 可以与空转速度控制值相关联地计算第一系数。 根据吹扫流量和罐压力的变化计算第二燃料校正系数。 可以与空燃比反馈控制值相关联地计算第二系数。

公开(公告)号：US20070289365A1

公开(公告)日：2007-12-20

申请号：US11889241

申请日：2007-08-10

申请人： Noriyasu Amano ,  Takanobu Kawano ,  Nobuhiko Koyama

发明人： Noriyasu Amano ,  Takanobu Kawano ,  Nobuhiko Koyama

IPC分类号： G01N7/00

CPC分类号： G01N7/00 ,  F02D41/0045 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0612 ,  F02M25/0818 ,  G01N33/22

摘要： A fuel nature measuring device for measuring the nature of fuel stored in a fuel tank includes a measurement passage, a gas flow generator, a pressure detector, an concentration operator, a temperature detector, and a volatility calculator. The measurement passage has an orifice. The gas flow generator generates gas flow in the measurement passage. The pressure detector detects a differential pressure between opposite ends of the orifice. The concentration operator determines a concentration of evaporated fuel in the fuel tank based on the differential pressure detected when the opposite ends of the measurement passage communicate with the fuel tank and the fuel flows in the measurement passage. The temperature detector determines a temperature of the fuel in the fuel tank. The volatility calculator calculates a volatility of the fuel in the fuel tank based on the concentration of the evaporated fuel and the temperature of the fuel in the tank.

摘要翻译： 用于测量存储在燃料箱中的燃料性质的燃料性质测量装置包括测量通道，气流发生器，压力检测器，浓度计算器，温度检测器和挥发性计算器。 测量通道具有孔口。 气流发生器在测量通道中产生气流。 压力检测器检测孔口两端之间的差压。 集中操作者基于当测量通道的相对端与燃料箱连通并且燃料在测量通道中流动时检测到的压差来确定燃料箱中蒸发燃料的浓度。 温度检测器确定燃料箱中的燃料的温度。 挥发性计算器基于蒸发的燃料的浓度和罐中的燃料的温度来计算燃料箱中的燃料的挥发性。

公开(公告)号：US06394074B1

公开(公告)日：2002-05-28

申请号：US09978582

申请日：2001-10-18

申请人： Kingo Okada ,  Nobuhiko Koyama ,  Toshihiko Muramatsu ,  Susumu Kojima

发明人： Kingo Okada ,  Nobuhiko Koyama ,  Toshihiko Muramatsu ,  Susumu Kojima

IPC分类号： F03M3704

CPC分类号： F02M25/089 ,  F02M37/106 ,  F02M2025/0881

摘要： A fuel pump suctions fuel from a fuel tank and discharges it into a pressure tank. Then, the fuel pump suctions the fuel from the pressure tank and pressurizes it. Then, the fuel pump discharges the pressurized fuel toward an engine side through a fuel discharge pipeline. A pressure control valve is opened to communicate an inside of the fuel tank and an inside of the pressure tank when a pressure in the pressure tank becomes equal to or greater than a predetermined pressure. A canister receives activated carbons for absorbing vapor fuel from the fuel tank. A pressurizing pump suctions the vapor fuel from the canister and pressurizes it. The pressurized vapor fuel is then discharged from the pressurizing pump into the pressure tank, so that the vapor fuel is dissolved into the fuel in the pressure tank.

公开(公告)号：US5501198A

公开(公告)日：1996-03-26

申请号：US384487

申请日：1995-02-01

申请人： Nobuhiko Koyama

发明人： Nobuhiko Koyama

IPC分类号： F02M25/08 ,  F02M37/04

CPC分类号： F02M25/0809

摘要： Operation of a fuel vapor control apparatus having a canister and a fuel vapor purging passage is detected occasionally by a pressure sensor which is disposed in a fuel tank of an engine. The sensor detects pressure changes in the purging passage caused by closing or opening the passage between the canister and a suction pipe of the engine, and by introducing or by interrupting the air flowing into the canister. A computer calculates signals generated by the sensor and decides whether or not any failure has occurred in the fuel vapor control apparatus. An air intake unit which has an air filter and an air switching valve is detachably installed close to the canister. When the air switching valve is controlled to introduce the air into the canister, the air passes the filter before the switching valve so that the valve may not be subject to dust or foreign particles contained in the air and good sealing of the valve is ensured for long time. As a result, highly reliable failure detection is attained, and the apparatus is easy to be installed in a vehicle.

摘要翻译： 通过设置在发动机的燃料箱中的压力传感器偶尔检测具有罐和燃料蒸气吹扫通道的燃料蒸气控制装置的操作。 传感器检测通过关闭或打开罐和发动机的吸入管之间的通道以及通过中断流入罐中的空气引起​​的清洗通道中的压力变化。 电脑计算由传感器产生的信号，并判断在燃料蒸汽控制装置中是否发生故障。 具有空气过滤器和空气切换阀的进气单元可拆卸地安装在罐附近。 当空气切换阀被控制为将空气引入到罐中时，空气在​​切换阀之前通过过滤器，使得阀不会被灰尘或包含在空气中的异物，并且确保阀的良好密封性 长时间。 结果，实现了高度可靠的故障检测，并且该装置易于安装在车辆中。

公开(公告)号：US07219660B2

公开(公告)日：2007-05-22

申请号：US11259108

申请日：2005-10-27

申请人： Noriyasu Amano ,  Takanobu Kawano ,  Koichi Inagaki ,  Nobuhiko Koyama ,  Masao Kano ,  Shinsuke Takakura ,  Yoshichika Yamada

发明人： Noriyasu Amano ,  Takanobu Kawano ,  Koichi Inagaki ,  Nobuhiko Koyama ,  Masao Kano ,  Shinsuke Takakura ,  Yoshichika Yamada

IPC分类号： F02M33/02 ,  G01L3/26

CPC分类号： F02M25/089 ,  F02M25/0809 ,  F02M25/0827 ,  F02M25/0872

摘要： A pump generates a gas flow within a measurement passage having an orifice. A differential pressure sensor detects a pressure difference between both ends of the orifice. Switching valves are disposed in the measurement passage to create a first concentration measurement state in which the measurement passage is opened at both ends thereof and the gas flowing through the measurement passage is the atmosphere, and a second concentration measurement state in which the measurement passage is in communication at both ends thereof with a canister and the gas flowing through the measurement passage is a fuel vapor-containing air-fuel mixture provided from the canister. An ECU calculates a fuel vapor concentration by based on a pressure difference detected in the first concentration measurement state and a pressure difference detected in the second concentration measurement state.

摘要翻译： 泵在具有孔口的测量通道内产生气流。 差压传感器检测孔口两端之间的压力差。 切换阀设置在测量通道中以产生第一浓度测量状态，其中测量通道在其两端开口，并且流过测量通道的气体是大气;以及第二浓度测量状态，其中测量通道是 在其两端与罐连通，并且流过测量通道的气体是从罐提供的含燃料蒸气的空气 - 燃料混合物。 ECU根据在第一浓度测量状态下检测的压力差和在第二浓度测量状态下检测的压力差来计算燃料蒸气浓度。