CN110725764A - 液化石油气车辆的燃料注入系统 - Google Patents
液化石油气车辆的燃料注入系统 Download PDFInfo
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- 239000003915 liquefied petroleum gas Substances 0.000 title claims abstract description 211
- 239000000446 fuel Substances 0.000 title claims abstract description 151
- 238000002347 injection Methods 0.000 title claims abstract description 116
- 239000007924 injection Substances 0.000 title claims abstract description 116
- 239000004020 conductor Substances 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明提供一种液化石油气车辆的燃料注入系统。利用燃料泵将LPG罐中剩余的LPG强行输送至燃料喷射管路中,并且其用于向着LPG罐对被喷射进入燃料喷射管路中的新的LPG进行增压。从而,即使在更温暖的天气条件下也可以利用新的LPG再注入LPG罐。
Description
技术领域
本发明涉及液化石油气车辆的燃料注入系统,更具体地涉及这样一种液化石油气车辆的燃料注入系统:即使温度升高,仍使用液化石油气再注入液化石油气罐。
背景技术
通常,如相关技术的图1所示,液化石油气(LPG)车辆的燃料注入过程包括:操作LPG加气站的注入泵2,作为操作注入泵2的结果,从LPG加气站的LPG储存空间1向注入枪3供应LPG,并且利用注入枪3的LPG注入压力将LPG注入车辆的LPG罐。
然而,当外部温度非常高时,例如在炎热的天气,车辆的LPG罐中的压力可能大于LPG注入压力,从而无法注入LPG。换言之,当车辆的LPG罐中的压力大于LPG注入压力时,可能无法利用注入枪给LPG罐注入LPG。
例如,当炎热天气的大气温度约为40℃或更高时,车辆的LPG罐中的压力(例如16.5bar)大于注入枪中的LPG注入压力(例如16.3bar=LPG加气站的LPG储存空间中的压力,该压力为8.3bar+作为操作注入泵的结果的LPG的泵送压力,该泵送压力为8.0bar)。因此,可能无法利用注入枪将LPG再注入LPG罐。
公开于本部分的上述信息仅仅用于加深对发明背景的理解,因此其可以包含的信息并不构成在本国已为本领域技术人员所公知的现有技术。
发明内容
本发明提供一种LPG车辆的燃料注入系统,在该系统中,利用燃料泵将LPG罐中剩余的LPG强行输送至燃料喷射管路,并且该LPG可以用于朝向LPG罐对被喷射进入燃料喷射管路中的新的LPG进行增压,从而即使在炎热的天气也可以更容易地用新的LPG注入LPG罐。
一方面,本发明提供一种LPG车辆的燃料注入系统,该系统包括LPG罐、燃料泵、燃料喷射管路和燃料增压管线,所述LPG罐用于储存供应给该系统的LPG;所述燃料泵安装在LPG罐中以向发动机供应LPG;所述燃料喷射管路将燃料喷射口连接至LPG罐的注入口;所述燃料增压管线安装在燃料泵的出口和燃料喷射管路之间。由于响应于来自控制器的控制信号而工作的燃料泵的泵送力,LPG罐中剩余的LPG可以沿燃料增压管线流动,然后向着LPG罐对被喷射进入燃料喷射管路的新的LPG进行增压。
在示例性实施方案中,燃料注入系统可以进一步包括LPG传感器,其安装在燃料喷射管路的预先确定的位置处,并且所述LPG传感器配置为感测被喷射进入燃料喷射管路的新的LPG并向控制器发送感测信号。在另一个示例性实施方案中,LPG传感器可以安装至设置在燃料喷射管路的预先确定的位置处的燃料过滤器上,并且可以配置为感测被燃料过滤器过滤的新的LPG。
此外,LPG传感器可以包括导体、覆盖构件、装配架和信号传输线,所述导体配置为通过与LPG接触来感测LPG;所述覆盖构件围绕导体;所述装配架围绕覆盖构件的外周表面;所述信号传输线从导体延伸。燃料增压管线可以从燃料供应管线分支,燃料供应管线将燃料泵的出口连接至发动机。三通电磁阀可以安装在燃料增压管线从燃料供应管线分支的点处,所述三通电磁阀可以被控制器操作以接通或关断。
当三通电磁阀接通时,燃料泵的出口和燃料增压管线可以彼此连通,而当三通电磁阀关断时,燃料泵的出口和发动机可以彼此连通。燃料注入系统可以进一步包括止回阀,其安装在燃料增压管线中以防止LPG流回LPG罐。此外,燃料注入系统可以包括过度注入防止阀,其安装至LPG罐的注入口处;以及喷洒单元,其安装至所述过度注入防止阀的出口处以雾化并以雾的形式喷洒LPG。
附图说明
将参考附图中说明的某些示例性实施方案对本发明的以上和其它特点进行详细的描述,以下给出的附图仅用作说明而不限制本发明,在附图中:
图1是示出了根据相关技术的LPG车辆的燃料注入过程的示意图;
图2是示出了根据本发明的示例性实施方案的LPG车辆的燃料注入系统的结构图;
图3是示出了根据本发明的示例性实施方案的LPG车辆的燃料注入系统的LPG传感器的示意图;
图4是示出了根据本发明的示例性实施方案的LPG车辆的燃料注入系统在炎热的天气用LPG再注入LPG罐的操作的结构图;以及
图5是示出了根据本发明的示例性实施方案的LPG车辆的燃料注入系统的操作和控制过程的流程图。
应当了解,附图不必按比例绘制,而是呈现各种示例性特征的简化表示,以对本发明的基本原理进行说明。本发明所公开的具体设计特征(例如包括具体尺寸、方向、位置和形状)将部分地由具体所要应用和使用的环境来确定。在图中,附图标记在附图的几个图中表示本发明的同样的或等同的部件。
具体实施方式
应当理解,此处所使用的术语“车辆”或“车辆的”或其它类似术语一般包括机动车辆,例如包括运动型多用途车辆(SUV)、大客车、卡车、各种商用车辆的乘用汽车,包括各种舟艇、船舶的船只,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、氢动力车辆以及其它替代性燃料车辆(例如源于非石油的能源的燃料)。
虽然示例性的实施方案描述为使用多个单元以执行示例性的过程,但是应当理解,示例性的过程也可以由一个或多个模块执行。此外,应当理解的是术语控制器/控制单元指代的是包含有存储器和处理器的硬件设备。该存储器被配置为储存模块,并且处理器具体配置为执行所述模块以执行以下进一步描述的一个或多个过程。
本文所使用的术语仅用于描述具体实施方案的目的并且不旨在限制本发明。正如本文所使用的,单数形式“一”、“一个”和“该”旨在也包括复数形式,除非上下文另有清楚地指示。进一步可理解地,当在本说明书中使用词语“包括”和/或“包含”时,特指所陈述的特征、数值、步骤、操作、元件和/或组件存在,但不排除存在或额外存在一个或多个其它特征、数值、步骤、操作、元件、组件和/或及其组合。正如本文所使用的,术语“和/或”包括一种或多种相关列举项的任何和所有组合。
除非特别声明或者从上下文显而易见的,本文所使用的术语“约”被理解为在本领域的正常公差范围内,例如在平均值的2个标准偏差内。“大约”可被理解为在指定值的10%、9%、8%、7%、6%、5%、4%、3%、2%、1%、0.5%、0.1%、0.05%或0.01%之内。除非从上下文清楚的,本文提供的所有数值通过术语“大约”来进行修改。
下文将详细引用本发明的各个示例性实施方案,示例性实施方案的示例显示在附图中并描述如下。尽管本发明将结合示例性实施方案进行描述,但是可以理解本说明书并不旨在将本发明限制在这些示例性实施方案中。正相反,本发明旨在不仅覆盖示例性实施方案,还包括各种替代的实施方案、修改的实施方案、等价的实施方案或其它示例性实施方案,所述实施方案包含在由所附权利要求所定义的本发明的精神和范围中。
图2是示出了根据本发明的液化石油气(LPG)车辆的燃料注入系统的结构图。如图2所示,用于供应LPG的燃料喷射管路14将安装在车辆的外侧板中的燃料喷射口12连接至LPG罐10的注入口。LPG罐10的注入口可以包括过度注入防止阀16,其用于不断调节供应至罐的LPG量。燃料泵18用于将LPG输送至发动机30,燃料泵18可以安装在LPG罐10中。
当外部温度非常高时,例如在炎热天气,LPG罐10中的压力可能大于从注入枪喷射进入燃料喷射口12和燃料喷射管路14的LPG的注入压力,从而可能无法给LPG罐注入LPG。因此,根据本发明,燃料增压管线20可以安装在燃料泵18的出口和燃料喷射管路14的入口之间。由于燃料泵18的泵送力(响应于来自控制器24的控制信号而工作),LPG罐10中剩余的LPG(例如高压罐中现存的高温LPG)可以沿燃料增压管线20流动,然后向着LPG罐10对从注入枪喷射进入燃料喷射管路14的新的LPG进行增压。因此,即使在炎热的天气也可以更容易地用LPG再注入LPG罐。
燃料增压管线20可以从燃料供应管线22分支,燃料供应管线22将燃料泵18的出口连接至发动机30。换言之,燃料增压管线20的第一端可以连接至燃料供应管线22,而燃料增压管线20的第二端(例如相对端)可以经由快速接合连接至燃料喷射管路14的入口。此外,三通电磁阀26通过控制器24接通或关断,三通电磁阀26可以设置在燃料增压管线20从供应管线22分支的点处。
在发动机启动状态下,三通电磁阀26可以通过控制器24关断,从而燃料泵18的出口和发动机30可以彼此连通。因此,LPG罐10中的LPG可以通过燃料泵18的操作经由燃料供应管线22供应至发动机30。当在发动机关闭的状态下需要用LPG注入LPG罐时,控制器24可以配置为响应于接收的发动机关闭信号和来自位置传感器(未图示)的信号接通三通电磁阀26,所述位置传感器配置为感测燃料注入帽(未图示)的打开或关闭,从而燃料泵18的出口和燃料增压管线20可以彼此连通。
因此,由于燃料泵18的泵送力(响应于来自控制器24的控制信号而工作),在发动机关闭的状态下,LPG罐10中剩余的LPG(例如高压罐中现存的高温LPG)可以经由三通电磁阀26沿燃料增压管线20流动,然后向着LPG罐10对从注入枪喷射进入燃料喷射管路14的新的LPG进行增压。此外,止回阀28可以安装在燃料增压管线20中以防止从LPG罐10流动至燃料喷射管路14的剩余的LPG流回至LPG罐10。为了确定新的LPG是否从注入枪喷射进入燃料喷射管路14,LPG传感器32可以安装至预先确定的燃料喷射管路14的位置以向控制器24发送LPG感测信号。
如图3所示,LPG传感器32可以包括导体32-1、覆盖构件32-2、装配架32-3和信号传输线32-4,所述导体32-1配置为通过与LPG接触感测LPG;所述覆盖构件32-2围绕并保护除了导体32-1的远端部分的导体32-1的外周表面;所述装配架32-3围绕覆盖构件32-2的外周表面以接合至燃料喷射管路14的外周表面;所述信号传输线32-4从导体32-1延伸以从导体32-1向控制器24发送信号。
LPG传感器32可以用燃料过滤器34模块化,燃料过滤器34设置在燃料喷射管路14的预先确定的位置以从LPG中去除杂质,从而LPG传感器32可以配置为感测被燃料过滤器34过滤的新的LPG。燃料喷射管路14的远端部分可以连接至LPG罐的注入口。用于不断调节供应至罐的液化石油气的量的过度注入防止阀16可以安装至注入口的一部分(该部分位于罐中)上。
喷洒单元36配置为雾化并且以雾的形式喷洒LPG,喷洒单元36可以安装至过度注入防止阀16的出口处。喷洒单元36可以配置为通过高速喷射使液态LPG雾化为气相,并且将雾化燃料以雾的形式喷洒进入罐10中。因此,可以更容易地实现喷洒的LPG和高温罐中的热量之间的热交换,稍后将进行描述。
下文中,将对根据本发明的具有上述结构的LPG注入系统的操作进行描述。图4是示出了根据本发明的LPG车辆的燃料注入系统在炎热的天气(例如高于40℃)用LPG再注入罐的操作的结构图。图5是示出了根据本发明的LPG车辆的燃料注入系统的操作和控制过程的流程图。
首先,LPG罐10中的压力可以利用压力传感器(未图示)进行感测,并且感测的压力值可以被发送至控制器。随后,控制器可以配置为将LPG罐10中的压力与参考压力(例如约12bar)进行比较(S101)。响应于确定LPG罐中的压力小于参考压力(例如燃料枪的LPG注入压力),控制器24可以配置为保持三通电磁阀26处于关断状态(S102)。
由于LPG罐中的压力小于燃料枪的LPG注入压力,从燃料枪被喷射进入燃料喷射口12的新的LPG可以经由燃料喷射管路14和过度注入防止阀16供应至LPG罐10(S103)。响应于确定LPG罐中的压力等于或大于参考压力(例如燃料枪的LPG注入压力),控制器24可以配置为强行将LPG罐10中剩余的LPG(例如在高压罐中现存的高温LPG)沿燃料增压管线20输送进入燃料喷射管路14,从而向着LPG罐10对新的LPG进行增压。
因此,LPG传感器32可以配置为感测实际上LPG是否被供应,即LPG是否被喷射进入燃料喷射管路14(S104)。具体地,由于LPG罐10中相对高的压力,从燃料枪喷射进入燃料喷射口12的新的LPG可能无法被供应至LPG罐10,但是可以向燃料喷射管路14流动。因此,LPG传感器32可以配置为感测被喷射进入燃料喷射管路14的LPG并且向控制器24发送感测信号。
随后,控制器24可以配置为响应于来自LPG传感器32的感测信号操作燃料泵18(S105),并且接通三通电磁阀26(S106)。作为接通三通电磁阀26的结果,燃料泵18的出口和燃料增压管线20彼此连通。随后,由于燃料泵18的泵送力,LPG罐10中剩余的LPG(在高压罐中现存的高温LPG)可以经由三通电磁阀26沿燃料增压管线20流动,然后可以移动进入燃料喷射管路14(S107)。
此外,已经移动进入燃料喷射管路14的剩余的LPG(在高压罐中现存的高温LPG)向着LPG罐10对从注入枪经过燃料喷射口12被喷射进入燃料喷射管路14的新的LPG进行增压,因此尽管温度升高,但是还是可以给LPG罐10注入新的LPG(S108)。LPG可以通过高速喷射雾化为气相,并且通过喷洒单元36以雾的形式喷洒进入LPG罐10中。因此,可以更容易地实现喷洒的LPG和高温罐中的热量之间的热交换(S109)。由于该热交换,可以减小LPG罐10中的温度和压力(S110)。由于上述热交换,当LPG罐10中的压力小于参考压力时(S111),控制器24可以配置为使燃料泵18停止工作,并且同时关断三通电磁阀26(S112)。
从上述描述明显可知,本发明具有以下效果。
首先,当外部温度非常高时,例如在炎热的天气(即在夏天),即使当LPG罐中的压力大于注入枪的LPG注入压力时,也可以利用燃料泵强行将LPG罐中剩余的LPG输送至燃料喷射管路,并且可以用于向着LPG罐对从注入枪喷射进入燃料喷射管路的新的LPG进行增压。因此,即使在炎热的天气也可以更容易地用LPG再注入LPG罐。
其次,当与LPG罐中的温度相比温度相对较低的LPG(例如,储存在LPG加气站的地下LPG储存空间中的LPG)可以被增压并供应至LPG罐时,LPG可以通过高速喷射雾化为气相并且通过喷洒单元以雾的形式喷洒进入LPG罐中,从而可以减小LPG罐中的温度和压力。因此,即使在炎热的天气也可以更容易地用LPG再注入LPG罐。
本发明已经参考本发明的示例性实施方案进行了详细的描述。然而,本领域的技术人员将理解对这些示例性实施方案进行的改变不背离本发明的原则和精神,其范围在所附权利要求及其等价形式中定义。
Claims (8)
1.一种液化石油气车辆的燃料注入系统,其包括:
液化石油气罐,其配置为储存供应至所述液化石油气罐的液化石油气;
燃料泵,其安装在所述液化石油气罐中以向发动机供应液化石油气;
燃料喷射管路,其将燃料喷射口连接至液化石油气罐的注入口;
燃料增压管线,其安装在所述燃料泵的出口和燃料喷射管路之间;
其中,由于响应于来自控制器的控制信号而工作的燃料泵的泵送力,液化石油气罐中剩余的液化石油气沿燃料增压管线流动,然后向着液化石油气罐对被喷射进入燃料喷射管路的新的液化石油气进行增压。
2.根据权利要求1所述的液化石油气车辆的燃料注入系统,其进一步包括:
液化石油气传感器,其安装在燃料喷射管路的预先确定的位置处,并且配置为感测被喷射进入燃料喷射管路的新的液化石油气并向控制器发送感测信号。
3.根据权利要求2所述的液化石油气车辆的燃料注入系统,其中,所述液化石油气传感器安装至设置在燃料喷射管路的预先确定的位置处的燃料过滤器上,并且配置为感测被燃料过滤器过滤的新的液化石油气。
4.根据权利要求2所述的液化石油气车辆的燃料注入系统,其中,所述液化石油气传感器包括:
导体,其配置为通过与液化石油气接触来感测液化石油气;
覆盖构件,其围绕所述导体;
装配架,其围绕所述覆盖构件的外周表面;
信号传输线,其从所述导体延伸。
5.根据权利要求1所述的液化石油气车辆的燃料注入系统,其中,所述燃料增压管线从将燃料泵的出口连接至发动机的燃料供应管线分支,并且三通电磁阀安装在燃料增压管线从燃料供应管线分支的点处,所述三通电磁阀在控制器的控制下接通/关断。
6.根据权利要求5所述的液化石油气车辆的燃料注入系统,其中,当三通电磁阀接通时,燃料泵的出口和燃料增压管线彼此连通,而当三通电磁阀关断时,燃料泵的出口和发动机彼此连通。
7.根据权利要求1所述的液化石油气车辆的燃料注入系统,其进一步包括:
止回阀,其安装在燃料增压管线中以防止液化石油气流回液化石油气罐。
8.根据权利要求1所述的液化石油气车辆的燃料注入系统,其进一步包括:
过度注入防止阀,其安装至液化石油气罐的注入口处;
喷洒单元,其安装至所述过度注入防止阀的出口处以雾化并以雾的形式喷洒液化石油气。
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US10808886B2 (en) | 2020-10-20 |
KR102602413B1 (ko) | 2023-11-14 |
KR20200008697A (ko) | 2020-01-29 |
US20200025335A1 (en) | 2020-01-23 |
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