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公开(公告)号：US5850819A
公开(公告)日：1998-12-22
申请号：US569994
申请日：1995-12-08
IPC分类号： B60K15/035 , B60K15/04 , F02M25/08 , F02M37/04
CPC分类号： F02M25/089 , B60K15/035 , B60K15/04 , B60K2015/03576
摘要： A fuel evaporative emission treatment system includes a canister which has an evaporative fuel introduction part arranged for communication with a fuel tank, an evaporative fuel emission part arranged for communication with an intake system of an engine, and a vent part arranged for communication with the atmosphere, and which absorbs the evaporative fuel. The fuel evaporative emission treatment system includes a vent pipe having a first passage communicating to the vent part of the canister and to the atmosphere, a first solenoid valve for opening and closing the first passage, an air filter for cleaning atmospheric air flowing thereinto, the filter being provided on the first passage on the side remote from the canister with respect to the first solenoid valve, and a one-way valve or lead valve which defines a second passage communicating to the vent part of the canister. The valve is opened at fueling. The evaporative fuel generated in the fuel tank upon fueling contains a fuel component which is eliminated by the canister and emitted into the atmosphere through the second passage. As a result, the fueling performance will not deteriorate even if the air filter is provided.
摘要翻译： 一种燃料蒸发排放处理系统，包括：罐，其具有布置成与燃料箱连通的蒸发燃料导入部，布置成与发动机的进气系统连通的蒸发燃料排出部，以及与气氛连通的排气部 ，并吸收蒸发燃料。 燃料蒸发排放处理系统包括：通气管，其具有与罐的排气部分和大气连通的第一通道，用于打开和关闭第一通道的第一电磁阀，用于清洁流入其中的大气的空气过滤器， 过滤器相对于第一电磁阀设置在远离罐的一侧的第一通道上，以及限定与罐的排气部分连通的第二通道的单向阀或引导阀。 阀门在加油时打开。 在加油时在燃料箱中产生的蒸发燃料包含燃料成分，该燃料成分被罐排出并通过第二通道排放到大气中。 因此，即使设置空气过滤器，燃料供给性能也不会劣化。
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公开(公告)号：US5819796A
公开(公告)日：1998-10-13
申请号：US622165
申请日：1996-03-27
IPC分类号： B60K15/077 , B60K15/035 , B60K15/04 , F02M37/00 , F02M39/00
CPC分类号： B60K15/03519 , B60K15/04 , B60K15/03504 , Y10T137/86324
摘要： The fuel storage system includes a control valve having a valve body which is movable along the inner circumferential wall surface of a filler pipe and which defines a passage isolated from the inner space of the filler pipe. A fuel tank and a canister communicate with each other via a main vapor line. When a fuel cap is attached to the filler port of the filler pipe, the valve body of the control valve is pushed by the fuel cap to be shifted away from the filler port, whereby a first sub-vapor line extending between the fuel tank and the control valve via the passage defined by the valve body is communicated to a second sub-vapor line extending between the control valve and the middle part of the main vapor line, permitting evaporative fuel gas to be introduced from the fuel tank into the canister. When a feed nozzle is inserted into the filler pipe to open a lid disposed therein, the valve body is shifted toward the filler port to allow the second sub-vapor line to communicate to the inner space of the filler pipe, to permit evaporative fuel gas to be introduced from the fuel tank into the filler pipe, preventing inflow of the outside air through the filler port attributed to drop in the internal pressure of the filler pipe, and generation of fresh evaporative fuel gas. Lowering in the refueling performance and over-refueling can be also prevented.
摘要翻译： 燃料储存系统包括具有阀体的控制阀，该阀体可沿着加注管的内周壁表面移动，并且限定了与填充管的内部空间隔离的通道。 燃料箱和罐通过主蒸汽管线彼此连通。 当燃料盖附接到加油口的加料口时，控制阀的阀体被燃料帽推动以从加料口移开，由此在燃料箱和燃料箱之间延伸的第一副蒸气管线 通过由阀体限定的通道的控制阀连通到在控制阀和主蒸汽管线的中间部分之间延伸的第二副蒸气管线，允许蒸发燃料气体从燃料箱引入罐中。 当将进料喷嘴插入到加注管中以打开设置在其中的盖时，阀体朝向填料口移动，以允许第二副蒸气管线与填料管的内部空间连通，以允许蒸发燃料气体 从燃料箱引入加油管，防止由于加注管的内压下降导致的外部空气通过填料口的流入，以及产生新鲜的蒸发燃料气体。 降低加油性能和过度加油也可以防止。
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公开(公告)号：US5570672A
公开(公告)日：1996-11-05
申请号：US508560
申请日：1995-07-28
IPC分类号： B60K15/035 , F02M25/08
CPC分类号： B60K15/03519 , B60K15/035 , B60K15/03504 , B60K2015/03561 , Y10T137/86324
摘要： A fuel evaporative emission treatment system installed in an engine fuel system has a canister for adsorbing evaporative fuel, a vent hose connecting a fuel tank and the canister, and a vent circulation hose connecting the vent hose and a filler neck of the fuel tank, and the sectional areas of the vent hose and vent circulation hose are set so that the ratio thereof may be a proper value. The negative pressure produced in the filler neck due to aspiration induced by refueling is canceled out by the pressure of fuel gas circulated to the filler neck through the vent circulation hose, whereby the internal pressure of the filler neck is controlled to a value appropriately smaller than the atmospheric pressure. Thus, inflow of the outside air into the filler neck, and thus generation of evaporative fuel gas, can be suppressed, and also the outflow of evaporative fuel gas from the filler neck is suppressed.
摘要翻译： 安装在发动机燃料系统中的燃料蒸发排放处理系统具有用于吸附蒸发燃料的罐，连接燃料箱和罐的排气软管以及连接排气软管和燃料箱的填充口的排气循环软管，以及 排气软管和排气循环软管的截面面积被设定为使其比例可以是适当的值。 由加油引起的抽吸引起的填料颈部产生的负压由通过排气循环软管循环到填充管颈的燃料气体的压力抵消，由此将填充管颈的内部压力控制在适当小于 大气压力。 因此，可以抑制外部空气进入填充管颈，从而抑制蒸发燃料气体的产生，并且抑制蒸发燃料气体从填充管颈的流出。
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公开(公告)号：US06738709B2
公开(公告)日：2004-05-18
申请号：US10153637
申请日：2002-05-24
申请人： Kenji Saito , Satoshi Nagashima , Yoichiro Ando , Hidetsugu Kanao
发明人： Kenji Saito , Satoshi Nagashima , Yoichiro Ando , Hidetsugu Kanao
IPC分类号： G06F1900
CPC分类号： F02M25/0809
摘要： A failure diagnostic system reduces the internal pressure of a fuel tank to a predetermined negative pressure, seals off the fuel tank from the air, and then determines whether an evaporated fuel processing system has failed or not by monitoring an increase in pressure in the fuel tank. In determination, the failure diagnostic system compares a detected pressure in the fuel tank with a reference value that is increased by a predetermined rate. The failure diagnostic system stops update of the detected pressure if the detected pressure becomes higher than the reference value, and resumes update of the detected pressure if the detected pressure becomes lower than the reference value. It is therefore possible to accurately determine whether the evaporated fuel processing system has failed or not even if the pressure in the fuel tank is rapidly increased.
摘要翻译： 故障诊断系统将燃料箱的内部压力降低到预定的负压，将燃料箱与空气密封，然后通过监视燃料箱中的压力增加来确定蒸发燃料处理系统是否发生故障 。 在确定时，故障诊断系统将检测到的燃料箱中的压力与以预定速率增加的参考值进行比较。 如果检测到的压力高于参考值，则故障诊断系统停止检测到的压力的更新，并且如果检测到的压力变得低于参考值，则恢复检测到的压力的更新。 因此，即使燃料箱中的压力快速增加，也可以精确地确定蒸发燃料处理系统是否发生故障。
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公开(公告)号：US06651491B2
公开(公告)日：2003-11-25
申请号：US10153793
申请日：2002-05-24
申请人： Kenji Saito , Satoshi Nagashima , Yoichiro Ando , Hidetsugu Kanao
发明人： Kenji Saito , Satoshi Nagashima , Yoichiro Ando , Hidetsugu Kanao
IPC分类号： G01L326
CPC分类号： F02M25/0809 , F02M25/0836
摘要： There is provided a failure diagnostic system of an evaporated fuel processing system, which comprises a first failure diagnostic device that shuts off an evaporated fuel purge passage connecting a fuel tank and an engine intake passage from the air and determines whether there is any leakage from a large hole by monitoring the degree of increase in pressure in the fuel tank in which engine intake negative pressure is introduced; and a second failure diagnostic device that reduces a pressure the fuel tank to a predetermined negative pressure and seals off the fuel tank from the air to carry out failure diagnosis as to whether there is any leakage from a small hole by monitoring the degree of increase in pressure in the fuel tank. An operating range of the second failure diagnostic device is set to substantially include an operating range of the first failure diagnostic device and to be extended from the operating range of the first failure diagnostic device to include a lower intake negative pressure range.
摘要翻译： 提供了一种蒸发燃料处理系统的故障诊断系统，其包括第一故障诊断装置，其关闭从空气连接燃料箱和发动机进气通道的蒸发燃料吹扫通道，并确定是否存在来自 通过监测引入发动机进气负压的燃料箱中的压力增加程度来监测大孔; 以及第二故障诊断装置，其将燃料箱的压力减小到预定的负压，并且将燃料箱与空气密封，以通过监视来自小孔的泄漏程度进行故障诊断 燃油箱内的压力。 第二故障诊断装置的操作范围被设定为基本上包括第一故障诊断装置的操作范围，并且从第一故障诊断装置的操作范围延伸到包括较低的进气负压范围。
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