CN106641699B - 双燃料车辆的燃料装填装置及方法 - Google Patents

双燃料车辆的燃料装填装置及方法 Download PDF

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CN106641699B
CN106641699B CN201610642684.4A CN201610642684A CN106641699B CN 106641699 B CN106641699 B CN 106641699B CN 201610642684 A CN201610642684 A CN 201610642684A CN 106641699 B CN106641699 B CN 106641699B
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fuel
pressure
fuel tank
petroleum gas
liquefied petroleum
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CN106641699A (zh
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金昶翰
金钟棋
朴在和
李在敏
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Hyundai Motor Co
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Hyundai Motor Co
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03519—Valve arrangements in the vent line
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    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
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    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
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Abstract

本发明提供了一种用于使用汽油和液化石油气(LPG)作为燃料的双燃料车辆的燃料装填装置和方法。当双燃料车辆中的LPG燃料箱的内部压力等于或者大于注油枪的LPG装填压力时，上述燃料装填装置和方法能够在使用汽油燃料箱和罐筒收集部分燃料后，暂时地燃烧部分LPG燃料。从而，使LPG燃料箱的内部压力降低到低于注油枪的LPG装填压力的水平，因此，能够使用注油枪更顺畅地将LPG燃料装填到LPG燃料箱中。

Description

双燃料车辆的燃料装填装置及方法
技术领域
本发明涉及一种双燃料车辆的燃料装填装置及方法，且更具体地，涉及一种用于使用汽油和液化石油气(LPG)作为燃料的双燃料车辆的、更容易地将液化石油气(LPG)装填到LPG燃料箱的燃料装填装置和方法。
背景技术
一般地，在使用汽油和液化石油气(LPG)作为燃料的双燃料车辆中，向发动机供应汽油燃料的系统与向发动机供应LPG燃料的系统配置成彼此分开，因此，以单独的方式执行汽油燃料装填和LPG燃料装填。
如图1所示，通过驱动安装在加油站的加油泵，基于加油泵的驱动将LPG燃料从LPG储存箱中传输到注油枪中，并且借助注油枪的LPG装填压力将LPG燃料装填到车辆的LPG燃料箱，来执行双燃料车辆中的LPG燃料装填。然而，在夏天或是在更温暖的温度下，当因高环境温度导致车辆的LPG燃料箱的内部压力升高超过LPG装填压力时，将存在不能装填LPG燃料的问题。
例如，在夏天，环境温度约为40℃或以上的情况下，车辆的LPG燃料箱的内部压力(例如，约16.5巴)可升高超过注油枪的LPG装填压力(例如，16.3巴＝8.3巴(在加油站处的LPG储箱中的内部压力)+8.0巴(基于加油泵的驱动的LPG泵压))。因此，可存在不能通过注油枪将LPG燃料装填进LPG燃料箱的问题。
发明内容
本发明提供了一种用于双燃料车辆的燃料装填装置和方法，当双燃料车辆中的LPG燃料箱的内部压力大于注油枪的LPG装填压力时，其能够在使用汽油燃料箱和罐筒(canister)收集部分液化石油气(LPG)燃料后，暂时燃烧该部分燃料，来将LPG燃料箱的内部压力降低至低于注油枪的LPG装填压力的水平，从而，能够更顺畅地利用注油枪来将LPG燃料装填到LPG燃料箱中。
在一方面，本发明提供了一种用于双燃料车辆的燃料装填装置，该装置可包括：电磁阀(solenoid valve)，其安装到双燃料车辆中的液化石油气(LPG)燃料箱，其中该电磁阀开启或关闭；排放管道(venting line)，其与电磁阀的出口连接；压力传感器，其配置成感测燃料箱的压力；控制器，其配置成当由压力传感器感测的燃料箱的压力等于或者高于注油枪(filling gun)的装填压力时，操作电磁阀使其暂时开启，并收集燃料箱中的部分LPG燃料；以及，收集器，其与排放管道的尾端连接，来收集通过电磁阀排放的部分LPG燃料，并向发动机供应收集的LPG燃料，用于发动机的暂时起动。
在示例性实施例中，收集器可包括：止回阀，其安装到汽油燃料箱，同时与排放管道的尾端连接；罐筒，其用于收集在经过止回阀后被引导至汽油燃料箱的上部扩展空间中的LPG燃料，并随后向发动机供应收集的LPG燃料；以及，放气阀(purge valve)，其安装到进气歧管来将从罐筒供应的LPG燃料引导至发动机的燃烧室。在另一示例性实施例中，燃料装填装置还可包括：电动门(motor-driven door)，其安装到通过装填管道与燃料箱连接的装填口(filling port)的入口部，当燃料箱的压力降低到低于注油枪的装填压力的水平时，可通过控制器开启电动门。
此外，燃料装填装置还可包括：电动门开启传感器(door opening sensor)，其安装到装填口的入口部，来感测电动门的开启状态。压力传感器可安装到调节器(regulator；稳压器)，该调节器配置成调节从燃料箱供应到发动机的燃料的压力。燃料装填装置还可包括：仪表盘，其配置成提供关于燃料装填的待机的警告，直到燃料箱压力降低到低于注油枪的装填压力的水平。
在另一方面，本发明提供了一种用于双燃料车辆的燃料装填方法，该方法可包括以下步骤：感测储存液化石油气(LPG)燃料的燃料箱的压力；当燃料箱压力等于或大于注油枪的装填压力时，收集燃料箱中的部分LPG燃料；向发动机供应收集的LPG燃料，并基于发动机的起动燃烧供应的LPG燃料，从而调节燃料箱的压力使其降低到低于注油枪的装填压力的水平；以及，当燃料箱压力降低到低于注油枪的装填压力的水平时，操作装填口的电动门，使其开启来将LPG燃料装填进燃料箱。
在示例性实施例中，收集燃料箱中的部分LPG燃料的步骤可包括：将燃料箱中的部分LPG燃料引导至汽油燃料箱的上部扩展空间中，并且将存在于汽油燃料箱的上部扩展空间中的LPG燃料收集进罐筒中，来向发动机的燃烧室供应收集的LPG燃料。此外，上述燃料装填方法还可包括以下步骤：通过安装在装填口的电动门开启传感器感测电动门的开启状态，从而确定电动门的故障。燃料装填方法还可包括：提供与燃料装填的待机有关的警告，直到燃料箱的压力降低到低于注油枪的装填压力的水平。
通过上述配置，本发明提供以下效果。
根据本发明，当因例如，在夏天，环境温度过度升高，导致双燃料车辆的LPG燃料箱的压力等于或大于注油枪的LPG装填压力时，燃料箱中的部分LPG燃料可被引导至汽油箱的上部扩展空间，并可在被罐筒收集后在发动机中燃烧。因此，能够降低燃料箱的压力，使其低于注油枪的装填压力，因此，可更顺畅地使用注油枪将LPG燃料装填到燃料箱中。
附图说明
现在将参考在附图中示出的本发明的示例性实施例详细地描述本发明的上述及其他特征，在下文中仅以例示的方式给出附图，因此其不限制本发明，其中：
图1是简要地示出了根据现有技术将液化石油气(LPG)燃料装填进双燃料车辆中的过程的图；
图2和图3是示出根据本发明的示例性实施例的用于双燃料车辆的燃料装填装置的配置的图；以及
图4是示出根据本发明的示例性实施例的用于双燃料车辆的燃料装填方法的流程图。
应当理解的是，附图不需要按比例绘制，其呈现的是能说明本发明的基本原理的各种示例性特征的某些简化表述。如本文所公开的，本发明的特定的设计特征，包括，例如，特定尺寸、方向、位置，和形状在某种程度上将由特定预期应用和使用环境确定。在附图中，贯穿附图中若干幅图，相同的附图标记指代本发明的相同或等效的部分。
具体实施方式
应当理解的是，本文所使用的术语“车辆”或“车辆的”或者其他相似术语通常包括机动车辆，例如包括运动型多用途车(SUV)、公交车、卡车、各式商用车辆在内的载客车辆，包括各种艇和船在内的水运工具，以及航空器等等，并且包括混合动力车辆、电动车辆、插电式混合动力电动车辆、氢动力车辆以及其他代用燃料车辆(例如，从石油以外的资源取得的燃料)。如本文所述，混合动力车辆是同时具有两种或多种动力源的车辆，例如，同时汽油驱动和电驱动的车辆。
尽管示例性实施例描述成使用多个单元来执行示例性流程，但应当理解的是，示例性流程也可通过一个或者多个模块执行。此外，应当理解的是，术语“控制器/控制单元”可指代包括存储器和处理器的硬件设备。存储器配置成存储模块，并且处理器特别地配置成执行上述模块从而执行一个或者多个下文进一步描述的过程。
此外，本发明的控制逻辑可实施为包括由处理器、控制器/控制单元等执行的可执行程序指令的计算机可读介质上的非暂时性计算机可读介质。计算机可读介质的示例包括但不限于ROM、RAM、光盘(CD)-ROM、磁带、软盘、闪存盘、智能卡和光学数据存储设备。计算机可读记录介质也可分布在网络连接的计算机系统中，以便以分布方式，例如通过远程信息处理服务器或控制器局域网络(CAN)，存储和执行计算机可读介质。
本文所使用的专有名词仅是为了说明特定实施例的目的，而非意在限制本发明。如本文所使用的，除非上下文另外清楚表明，单数形式“一个”、“一种”和“该”意在也包括复数形式。还将理解的是，当在本说明书中使用时，词语“包括”和/或“包含”规定所述特征、整数、步骤、操作、元件和/或部件的存在，但不排除一个或多个其他特征、整数、步骤、操作、元件、部件和/或其集合的存在或添加。如本文所使用的，词语“和/或”包括一个或多个相关列出项目的任何或全部组合。
除非特别陈述或从上下文显而易见，如本文所使用的，词语“约”被理解为处在本领域的正常容差范围内，例如在平均值的2倍标准差内。“约”可理解为在所述值的10％、9％、8％、7％、6％、5％、4％、3％、2％、1％、0.5％、0.1％、0.05％或0.01％内。除非从上下文另外明确，本文提供的所有数值均由词语“约”修饰。
在下文中，现将详细参考本发明的各种示例性实施例，其示例在附图中示出并将在下文中进行描述。尽管将结合示例性实施例描述本发明，但是应当理解的是，本说明书不意图于将本发明限制于这些示例性实施例。正相反，本发明旨在不仅覆盖这些示例性实施例，而且也覆盖可包括在由所附权利要求界定的本发明的精神和范围内的各种变化、修改、等效和其他示例性实施例。
图2和图3是示出根据本发明的示例性实施例的用于双燃料车辆的燃料装填装置的配置的视图。在图2和图3中，附图标记“10”表示将装填液化石油气(LPG)燃料以将其储存的燃料箱。配置成向发动机30供应LPG燃料的燃料泵12可布置在燃料箱10内。调节器14可安装在将燃料箱10与发动机30连接的燃料供应管道处以调节燃料供应压力，因此燃料供应压力可具有大致恒定的水平。
此外，装填管道16可与燃料箱10连接。装填口18可安装到装填管道16的入口处。可将加油站的注油枪插入装填口18来执行填料。具体地，调节器14可包括配置成感测从燃料箱10供应的燃料的压力，即，燃料箱10的内部压力(例如，燃料压力)的压力传感器15。此外，电磁阀20可以以可开闭的方式安装到燃料箱10的燃料出口处。
具体地，电磁阀20可以以可开关闭的方式(例如，能够通过控制器的操作开启和关闭)安装在安装在燃料箱10中的燃料泵12的出口位置处。排放管道(venting line)22可与电磁阀20的出口连接。此外，当电磁阀20开启时，排放管道22可配置成从燃料箱10引导部分LPG燃料，使其排向汽油燃料箱40。此外，当通过压力传感器15感测的燃料箱压力等于或者大于注油枪的装填压力(例如，当因例如，在夏天，环境温度过度升高，导致车辆中的燃料箱的LPG压力升高超过注油枪的LPG装填压力时)时，可通过控制器24暂时地开启电磁阀20。具体地，可通过排放管道22向收集器排放燃料箱10中的LPG燃料。
换句话说，控制器24可配置成接收来自压力传感器15的感测信号，并可配置成在基于该感测信号确定燃料箱压力等于或大于注油枪的装填压力时，暂时开启电磁阀20。因此，可通过开启的电磁阀20和排放管道22将燃料箱10中的LPG燃料排放到收集器中。收集器可与排放管道22的尾端(例如，自由端)连接，并且可收集通过电磁阀20排放的部分LPG燃料，随后，将收集的LPG燃料供应至发动机用于暂时起动发动机。
此外，收集器可包括：止回阀42，其安装到汽油燃料箱40，同时与排放管道22的尾端连接；以及，罐筒46(canister)，其用于收集在经过止回阀42后被引导至汽油燃料箱40的上部扩展空间44中的LPG燃料，并随后向发动机供应收集的LPG燃料。收集器还可包括：放气阀48，其安装到进气歧管来将从罐筒供应的LPG燃料引导至发动机的燃烧室。
根据上述布置，排放管道可连接在安装到燃料箱10的电磁阀20与安装到汽油燃料箱40的止回阀42之间。具体地，可在汽油燃料箱40的上部空间处布置未装填燃料的剩余扩展空间。通过排放管道22和止回阀42被引入汽油燃料箱40的LPG燃料可暂时保留在扩展空间44中。此外，收集蒸发的汽油等的罐筒46可与汽油燃料箱40连接。因此，被引入扩展空间44中的LPG燃料可在被收集在罐筒46中后，被供应至发动机。
作为参考，由于汽油和LPG都是烃类化合物，因此罐筒46可配置成收集任何蒸发的汽油和LPG的气体。最终，可通过安装到进气歧管的放气阀48将从罐筒46供应的LPG燃料引入发动机的燃烧室，并且随后可进行燃烧。具体地，控制器24可配置成执行发动机的起动，同时向发动机供应LPG燃料。例如，发动机控制单元(ECU)(未示出)可配置成当控制器24向ECU发送用于电磁阀20的开启控制信号时，执行发动机的起动。
如上所述，当燃料箱压力等于或大于注油枪的装填压力时，燃料箱中的部分LPG燃料将被引导至汽油燃料箱40的上部扩展空间44中，并且可在被被罐筒46收集后，在发动机中燃烧。因此，能够降低燃料箱压力，使其低于注油枪的装填压力，因此，可更顺畅地使用注油枪将LPG燃料装填进燃料箱中。另一方面，电动门26可安装在通过装填管道16与燃料箱10连接的装填口18的入口部。当燃料箱压力降低到低于注油枪的装填压力的水平时，可通过控制器24开启电动门26。
当不能进行LPG燃料装填时(例如，当因例如，在夏天，环境温度过度升高，导致车辆的LPG燃料箱压力升高超过注油枪的LPG装填压力时)，电动门26可保持关闭状态。具体地，驾驶员可识别出不可装填的状态。在另一方面，当由于燃料箱压力降低到低于注油枪的装填压力的水平，从而达到装填可行状态时，可通过控制器24开启电动门26，从而允许驾驶员识别出装填可行状态。
此外，可通过布置在驾驶员座位前方的仪表盘(未示出)显示提供关于燃料装填的待机状态(standby state)的通知的警告文本或信息，直到燃料箱压力从与不能进行LPG燃料装填的状态对应的水平降低到与能进行LPG燃料装填的状态对应的水平为止。因此，驾驶员可更清楚地识别出是否能够进行LPG燃料装填。
此外，电动门开启传感器28可安装在装填口18的入口部，来感测电动门26的开启状态。电动门开启传感器28可配置成确定电动门26是否处于开启状态，以及是否发生电动门26的故障。换句话说，当在通过控制器24操作电动门26使其开启的条件下，电动门开启传感器28未能感测到电动门26的开启状态时，控制器24可配置成确定电动门26发生故障，并且通过仪表盘显示警告文本等。因此，驾驶员可识别出电动门26的故障。
在下文中，将参考图2至图4描述根据本发明的示例性实施例的用于具有上述配置的双燃料车辆的燃料装填方法。首先，可通过用户或驾驶员操作用于LPG燃料装填的装填开关(S101)。在操作装填开关时，控制器可配置成确定发动机是处于开启状态还是关闭状态(S102)。当发动机不处于关闭状态时，可通过仪表盘显示停止发动机的警告文本(S103)。此外，当发动机处于关闭状态时，可感测储存LPG燃料的燃料箱的压力。
具体地，可通过安装在用于调节燃料供应压力的调节器14内的压力传感器15执行燃料箱压力的感测。换句话说，在调节器14的入口与燃料箱10的内部连通的条件下，压力传感器15可配置成将从燃料箱10向调节器14供应的LPG燃料的压力感测为燃料箱的内部压力。此后，控制器24可配置成接收由压力传感器15感测的燃料箱压力，并将接收的燃料箱压力与基准压力进行比较(例如，LPG加油站中提供的装填设备或注油枪的装填压力，例如，约为10巴)(S104)。
响应于基于比较结果确定燃料箱压力等于或大于注油枪的装填压力，可基于来自控制器24的控制命令开启电磁阀20(S105)。当电磁阀20开启时，燃料箱10中的LPG燃料可通过排放管道22和止回阀42被引入汽油燃料箱40的上部扩展空间44中(S106)。所引入的LPG燃料可被收集在罐筒46中，并随后可通过安装到进气歧管的放气阀被引入发动机燃烧室中。供应至发动机燃烧室的LPG燃料可根据发动机的起动而燃烧，因此可被消耗(S107)。
由于燃料箱中的部分LPG燃料被供应至发动机，并随后进行燃烧，因此能够将燃料箱的内部压力降低到等于或小于注油枪的装填压力的水平(例如，约为8巴或以下)。具体地，可暂时地执行发动机的起动，来降低燃料箱的内部压力，因此，不存在失火或LPG的过度消耗的问题。此后，控制器可配置成确定燃料箱的内部压力是否降低到低于注油枪的装填压力的水平(S108)。当燃料箱的内部压力小于注油枪的装填压力时，可通过控制器24开启装填口18的电动门26(S109)。在此状态下，能够通过将装填设备插入装填口18中以更顺畅地将LPG燃料装填进燃料箱。
此外，控制器可配置成提供关于燃料装填待机的警告，直到燃料箱的内部压力降低到低于注油枪的装填压力的水平。换句话说，可通过布置在驾驶员座椅前方的仪表盘(未示出)显示提供关于燃料注入待机的通知的警告文本，直到燃料箱的内部压力降低到低于注油枪的装填压力的水平，即，燃料箱达到装填可行状态。因此，驾驶员可更清楚地识别出是否能进行LPG燃料装填。
此外，可通过安装到装填口18的电动门开启传感器28感测电动门26的开启状态，从而确定是否发生电动门26的故障。例如，当在通过控制器24操作电动门26使其开启的条件下，电动门开启传感器28未能感测到电动门26的开启状态时，控制器24可配置成确定电动门26的故障，随后，控制器24可配置成通过仪表盘显示警告文本，等。因此，驾驶员可识别出电动门26的故障。
从上文描述中显而易见的是，当因例如，在夏天，环境温度过度升高，导致车辆的LPG燃料箱压力等于或者大于注油枪的LPG装填压力时，可将燃料箱中的部分LPG燃料引导至汽油箱的上部扩展空间中，并且在通过罐筒收集该部分LPG燃料后，可将其在发动机中燃烧。因此，能够降低燃料箱压力使其低于注油枪的装填压力，因此，可更顺畅地使用注油枪将LPG燃料装填进燃料箱。因此，能够解决在传统情况中遇到的问题，即，当因在夏天发生的环境温度过度升高，导致LPG燃料箱的压力等于或者大于注油枪的LPG装填压力时发生不能装填LPG燃料的问题。
已经参考本发明的示例性实施例详细地描述了本发明。然而，本领域的技术人员应当理解的是，在不违背所附权利要求和其等效所界定的本发明的原理、精神和范围的情况下，可在这些示例性实施例中做出修改。

Claims (8)

1.一种用于双燃料车辆的燃料装填装置，包括：
电磁阀，其安装到双燃料车辆中的液化石油气燃料箱；
排放管道，其与所述电磁阀的出口连接；
压力传感器，其配置成感测燃料箱的压力；
控制器，其配置成当由所述压力传感器感测的燃料箱压力等于或者大于注油枪的装填压力时，操作所述电磁阀使其暂时开启，并收集燃料箱中的部分液化石油气燃料；以及
收集器，其与所述排放管道的尾端连接，来收集通过所述电磁阀排放的部分液化石油气燃料，并向发动机供应所收集的液化石油气燃料，用于所述发动机的暂时起动，
其中所述收集器包括：
止回阀，其安装到汽油燃料箱，同时直接与所述排放管道的尾端连接；
罐筒，其配置成收集在经过所述止回阀后被引入所述汽油燃料箱的上部扩展空间中的液化石油气燃料，并且随后配置成向发动机供应所收集的液化石油气燃料；以及
放气阀，其安装到进气歧管以将从所述罐筒供应的液化石油气燃料引导至所述发动机的燃烧室，
其中，所述排放管道配置在所述电磁阀和所述止回阀之间，当所述电磁阀开启时，从液化石油气燃料箱引导部分液化石油气燃料通过所述止回阀向汽油燃料箱排放。
2.根据权利要求1所述的燃料装填装置，还包括：
电动门，其安装在通过装填管道与燃料箱连接的装填口的入口部，当燃料箱的压力降低到低于所述注油枪的装填压力的水平时，通过所述控制器开启所述电动门。
3.根据权利要求1所述的燃料装填装置，还包括：
电动门开启传感器，其安装在通过装填管道与所述燃料箱连接的装填口的入口部，并被配置成感测电动门的开启状态。
4.根据权利要求1所述的燃料装填装置，其中，所述压力传感器安装到调节器，所述调节器配置成调节从燃料箱供应到所述发动机的燃料的压力。
5.根据权利要求1所述的燃料装填装置，还包括：
仪表盘，其配置成输出关于燃料装填的待机的警告，直到所述燃料箱压力降低到低于所述注油枪的装填压力的水平。
6.一种通过权利要求1所述的用于双燃料车辆的燃料装填装置，用于双燃料车辆的燃料装填方法，包括以下步骤：
通过传感器，感测储存液化石油气燃料的燃料箱的压力；
当所述燃料箱压力等于或大于注油枪的装填压力时，通过控制器，将所述燃料箱中的部分液化石油气燃料收集到罐筒中；
通过所述控制器，向发动机供应所收集的液化石油气燃料，并基于所述发动机的起动燃烧所供应的液化石油气燃料，从而调节所述燃料箱的压力使其降低到低于所述注油枪的装填压力的水平；以及
当所述燃料箱压力降低到低于所述注油枪的装填压力的水平时，通过所述控制器，操作装填口的电动门，使其开启来进行所述燃料箱的液化石油气燃料装填，
其中收集所述燃料箱中的部分液化石油气燃料的步骤包括：
将所述燃料箱中的部分液化石油气燃料引导至汽油燃料箱的上部扩展空间中；以及
将存在于所述汽油燃料箱的上部扩展空间中的液化石油气燃料收集进所述罐筒中，用于向所述发动机的燃烧室供应所收集的液化石油气燃料。
7.根据权利要求6所述的燃料装填方法，还包括以下步骤：
通过传感器，感测所述电动门的开启状态，以确定所述电动门的故障，其中所述传感器安装到所述装填口。
8.根据权利要求6所述的燃料装填方法，还包括以下步骤：
通过所述控制器，显示关于所述燃料装填的待机的警告，直到所述燃料箱的压力降低到低于所述注油枪的装填压力的水平。
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