公开(公告)号：KR100444384B1

公开(公告)日：2004-08-16

申请号：KR1020010073120

申请日：2001-11-22

Applicant: (주)모토닉

Inventor： 이병호 ,  박명수 ,  안효찬 ,  박상욱 ,  이상준

IPC: B60K15/06

Abstract: PURPOSE: A gas fuel vehicle is provided to prevent leak of fuel from an injector by supplying residual fuel to an oil tank directly in stopping an engine, to improve start ability of the engine, and to reduce exhaust gas. CONSTITUTION: A gas fuel vehicle has a fuel supply line in which liquid gas fuel stored in a fuel tank(30) is pressurized by a fuel pump(32) and a regulator unit(20), supplied to an injector(11) of an engine(10) through a supply pipe(40), and burned. Non-burnt fuel re-flows in the fuel tank through a return pipe(50), passing through a pressure regulator(22) of the regulator unit and a return valve(51). The gas fuel vehicle includes a bypass pipe(100) communicated with the return pipe, bypassing the pressure regulator; a bypass valve(200) disposed on a side of the outer peripheral surface of the bypass pipe and controlled by an ECU(Electronic Control Unit,70); and a check valve(300) disposed on the bypass pipe to be separated from the bypass valve. The bypass valve opens a passage of the bypass pipe just when the engine stops. The check valve prevents countercurrent of fuel coming in the fuel tank.

Abstract translation: 目的：提供一种气体燃料车，其通过在停止发动机时直接向油箱供应残余燃料来防止燃料从喷射器泄漏，从而提高发动机的启动能力并减少排气。 一种气体燃料车辆具有燃料供应管线，其中储存在燃料箱（30）中的液态气体燃料由燃料泵（32）和调节器单元（20）加压，供应到喷射器 发动机10通过供给管40被燃烧。 未燃烧的燃料通过回流管（50）在燃料箱中回流，流过调节器单元的压力调节器（22）和回流阀（51）。 气体燃料车辆包括绕过压力调节器的与回流管连通的旁通管（100） 设置在旁通管的外周面侧并由ECU（电子控制单元70）控制的旁通阀200; 和布置在旁路管上以与旁路阀分开的止回阀（300）。 当发动机停止时，旁通阀打开旁路管道。 止回阀可防止燃油进入燃油箱的逆流。

公开(公告)号：KR1020030042380A

公开(公告)日：2003-05-28

申请号：KR1020010073121

申请日：2001-11-22

Applicant: (주)모토닉

Inventor： 이병호 ,  임재규 ,  신용남 ,  박상욱 ,  이상준

IPC: B60K15/077

Abstract: PURPOSE: A fuel leakage prevention system of an LPG(Liquefied Petroleum Gas) vehicle is provided to prevent fuel leakage from an injector by forcibly returning the remaining fuel in a fuel reversion line, the injector, and a fuel supplying line to a fuel storing tank through a control unit and the reduction of startability by optimally supplying fuel to a starting system according to the elapsed time after stopping an engine. CONSTITUTION: A system for preventing fuel leakage comprises a fuel storing tank(115) storing LPG fuel and having a fuel supplying pump; an injector(120) deciding a fuel injection period by controlling compressed fuel from the fuel supplying pump with a control unit; a fuel supplying line(130) connecting an outlet of the fuel supplying tank and an inlet of the injector and having plural solenoid valves opened and shut by the control of the control unit; a pressure sensor(135) coupling an outlet of the injector and an inlet of the fuel supplying tank, measuring the pressure of supplied fuel, and applying a measured value to the control unit; and a fuel reversion line(145) having a pressure controller controlling the pressure of supplied fuel. In addition, a solenoid valve for a bypass(155) and a driving pump(160) which are opened and closed by the control of the control unit are installed to the bypass line. The solenoid valves and the driving pump forcibly return charged fuel on the line to the fuel storing tank in stopping the engine.

Abstract translation: 目的：提供液化石油气（液化石油气）车辆的燃油泄漏防止系统，以通过强制将燃料回流管路中的剩余燃料，喷射器和燃料供给管路强制返回到燃料储存罐来防止燃料从喷射器泄漏 通过控制单元和通过根据停止发动机之后的经过时间向起动系统最佳地供给燃料来降低起动性。 构成：用于防止燃料泄漏的系统包括储存LPG燃料并具有燃料供给泵的燃料储存箱（115） 喷射器（120），其通过控制单元控制来自所述燃料供应泵的压缩燃料来确定燃料喷射周期; 燃料供给管线（130），其连接所述燃料供给箱的出口和所述喷射器的入口，并且具有通过所述控制单元的控制而打开和关闭的多个电磁阀; 联接喷射器的出口和燃料供给箱的入口的压力传感器（135），测量供应燃料的压力，并将测量值应用于控制单元; 和具有控制供给燃料的压力的压力控制器的燃料回流管线（145）。 此外，通过控制单元的控制来打开和关闭用于旁路（155）和驱动泵（160）的电磁阀安装在旁路管路上。 在停止发动机时，电磁阀和驱动泵将带电燃料在管路上强制返回到储油箱。

公开(公告)号：KR1020030042379A

公开(公告)日：2003-05-28

申请号：KR1020010073120

申请日：2001-11-22

Applicant: (주)모토닉

Inventor： 이병호 ,  박명수 ,  안효찬 ,  박상욱 ,  이상준

IPC: B60K15/06

Abstract: PURPOSE: A gas fuel vehicle is provided to prevent leak of fuel from an injector by supplying residual fuel to an oil tank directly in stopping an engine, to improve start ability of the engine, and to reduce exhaust gas. CONSTITUTION: A gas fuel vehicle has a fuel supply line in which liquid gas fuel stored in a fuel tank(30) is pressurized by a fuel pump(32) and a regulator unit(20), supplied to an injector(11) of an engine(10) through a supply pipe(40), and burned. Non-burnt fuel re-flows in the fuel tank through a return pipe(50), passing through a pressure regulator(22) of the regulator unit and a return valve(51). The gas fuel vehicle includes a bypass pipe(100) communicated with the return pipe, bypassing the pressure regulator; a bypass valve(200) disposed on a side of the outer peripheral surface of the bypass pipe and controlled by an ECU(Electronic Control Unit,70); and a check valve(300) disposed on the bypass pipe to be separated from the bypass valve. The bypass valve opens a passage of the bypass pipe just when the engine stops. The check valve prevents countercurrent of fuel coming in the fuel tank.

Abstract translation: 目的：提供一种燃气车辆，通过在发动机停止时直接向油箱供油，提高发动机起动能力，减少排气，防止燃油从喷油器泄漏。 构成：气体燃料车辆具有燃料供给管线，其中存储在燃料箱（30）中的液体燃料燃料通过燃料泵（32）和调节器单元（20）加压，供给到喷射器 发动机（10）通过供给管（40），并被燃烧。 未燃烧的燃料通过返回管（50）在燃料箱中流动，通过调节器单元的压力调节器（22）和回流阀（51）。 气体燃料车辆包括与回流管连通的旁通管（100），绕过压力调节器; 旁通阀（200），其设置在旁通管的外周面的一侧，由ECU（电子控制单元）70控制; 以及设置在旁通管上以与旁通阀分离的止回阀（300）。 旁路阀在发动机停止时打开旁通管的通道。 止回阀防止燃料箱内的燃料逆流。

公开(公告)号：KR3006614310000S

公开(公告)日：2012-09-27

申请号：KR3020100052601

申请日：2010-12-06

Applicant: (주)모토닉

Designer： 강명권 ,  유해찬 ,  김태우 ,  박상욱

公开(公告)号：KR100444383B1

公开(公告)日：2004-08-16

申请号：KR1020010073121

申请日：2001-11-22

Applicant: (주)모토닉

Inventor： 이병호 ,  임재규 ,  신용남 ,  박상욱 ,  이상준

IPC: B60K15/077

Abstract: PURPOSE: A fuel leakage prevention system of an LPG(Liquefied Petroleum Gas) vehicle is provided to prevent fuel leakage from an injector by forcibly returning the remaining fuel in a fuel reversion line, the injector, and a fuel supplying line to a fuel storing tank through a control unit and the reduction of startability by optimally supplying fuel to a starting system according to the elapsed time after stopping an engine. CONSTITUTION: A system for preventing fuel leakage comprises a fuel storing tank(115) storing LPG fuel and having a fuel supplying pump; an injector(120) deciding a fuel injection period by controlling compressed fuel from the fuel supplying pump with a control unit; a fuel supplying line(130) connecting an outlet of the fuel supplying tank and an inlet of the injector and having plural solenoid valves opened and shut by the control of the control unit; a pressure sensor(135) coupling an outlet of the injector and an inlet of the fuel supplying tank, measuring the pressure of supplied fuel, and applying a measured value to the control unit; and a fuel reversion line(145) having a pressure controller controlling the pressure of supplied fuel. In addition, a solenoid valve for a bypass(155) and a driving pump(160) which are opened and closed by the control of the control unit are installed to the bypass line. The solenoid valves and the driving pump forcibly return charged fuel on the line to the fuel storing tank in stopping the engine.

Abstract translation: 目的：提供一种LPG（液化石油气）车辆的燃料泄漏防止系统，其通过强制性地将燃料回流管路中的剩余燃料，喷射器和燃料供应管路返回到燃料储存罐来防止燃料从喷射器泄漏 通过控制单元并根据停止发动机之后经过的时间通过向起动系统最优地供应燃料来降低起动性。 构成：一种防止燃料泄漏的系统包括一个储存LPG燃料并具有一个燃料供应泵的燃料储存罐（115） 喷射器（120），其通过利用控制单元控制来自所述燃料供给泵的压缩燃料来决定燃料喷射期间; 连接所述燃料供应箱的出口和所述喷射器的入口并且具有通过所述控制单元的控制而打开和关闭的多个电磁阀的燃料供应管线（130） 连接喷射器的出口和燃料供应箱的入口的压力传感器（135），测量供应的燃料的压力并将测量值施加到控制单元; 和具有控制供应的燃料的压力的压力控制器的燃料回流管线（145）。 另外，通过控制单元的控制打开和关闭的用于旁路（155）和驱动泵（160）的电磁阀被安装到旁路管线。 在停止发动机时，电磁阀和驱动泵强制地将管线上的加载燃料返回到燃料储存罐。