CN103448534A - Natural gas leakage control device for CNG (compressed natural gas) automobile - Google Patents
Natural gas leakage control device for CNG (compressed natural gas) automobile Download PDFInfo
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- CN103448534A CN103448534A CN2013103588167A CN201310358816A CN103448534A CN 103448534 A CN103448534 A CN 103448534A CN 2013103588167 A CN2013103588167 A CN 2013103588167A CN 201310358816 A CN201310358816 A CN 201310358816A CN 103448534 A CN103448534 A CN 103448534A
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Abstract
The invention provides a natural gas leakage control device for a CNG (compressed natural gas) automobile. The device comprises at least two gas concentration sensors, a warning unit and a fuel gas ECU (electronic control unit), wherein the fuel gas ECU is connected with a CNG change-over switch, an electromagnetic bottleneck valve, a pressure reducer high-pressure electromagnetic valve, a fuel injector, the warning unit and a gas track assembly respectively; at least one gas concentration sensor is arranged in an engine nacelle of the CNG automobile, and at least one gas concentration sensor is arranged in a trunk for placing a CNG bottle. The device has the beneficial effects that leaking gas can be rapidly detected through the gas concentration sensors in the running process of the CNG automobile, the warning unit is controlled through the fuel gas ECU to transmit an alarming signal when gas concentration reaches a set value, the pressure reducer high-pressure electromagnetic valve and the electromagnetic bottleneck valve are closed, power supply to the gas track assembly is stopped, and power is supplied to the fuel injector, so that the CNG automobile can run to a safety place for detection and maintenance.
Description
[technical field]
The present invention relates to a kind of warning device, particularly a kind of CNG automotive natural gas is revealed control setup.
[background technology]
The English full name of current CNG(: Compressed Natural Gas, Chinese: the steel cylinder that compression natural gas) automobile generally will store CNG is arranged in the luggage compartment of vehicle, when the steel bottle mouth valve occurs to leak, natural fuels may be assembled in luggage compartment or engine cabin, causes potential safety hazard.According in GB GB7258-2012 to the safety precaution requirement of gaseous fuel special purpose device, gas vehicle should be installed leakage warning device, all pipe joints place phenomenon that all should not leak air.
Most CNG automobile is not all installed leakage warning device, during Leakage Gas, easily in confined space, assembles, and for example luggage compartment or engine cabin, when gas is constantly assembled, concentration increases, and can cause potential safety hazard.
Publication number is 202834354U, open day for the utility model patent of 2013-03-27, a kind of burnt gas valve with gas leakage warning function is disclosed, comprise valve and valve handle, be provided with housing on described valve, be provided with control module in housing, power module, alarm module and sensor, housing outer surface also is provided with the detection of natural gas module, the signal input part of the signal output part link control module of sensor, the signal output part of control module connects the signal input part of alarm module, the signal input part of the signal output part link control module of detection of natural gas module, power module is control module, alarm module, detection of natural gas module and sensor power supply.This patent is that move the position of detecting valve handle by sensor, then by control module, controls the work of detection of natural gas module, when natural fuels content surpasses safety value, sends a signal to alarm module.This patent only can play the effect of reminding the user, is a kind of burnt gas valve that simply has warning function, can't realize more complicated automation control, and therefore, this patent can't solve the CNG automotive natural gas leakage problem that the present invention proposes.
[summary of the invention]
The technical problem to be solved in the present invention, be to provide a kind of CNG automotive natural gas to reveal control setup, the technical matters that can not warn when it not only solves CNG automobile generation Leakage Gas, the power that can also further control the CNG automobile switches to the fuel oil state from the combustion gas state, increases the safety of natural gas-powered car simultaneously.
The present invention is achieved in that
A kind of CNG automotive natural gas is revealed control setup, comprise at least two gas concentration sensors, warning unit and a combustion gas ECU, described combustion gas ECU connects respectively CNG change-over swith, electromagnetism bottle-jack valve, pressure reducer high-pressure solenoid valve, fuel injector, warning unit and gas rail assembly, at least one described gas concentration sensor is located in CNG car engine cabin, and at least one described gas concentration sensor is located in the luggage compartment for placing the CNG gas cylinder.
Further, described gas concentration sensor is the CH4 gas concentration sensor.
Further, described warning unit is a Warning light, and described Warning light is located on automobile IP panel.
The present invention has following advantage: the CNG automobile is in traveling process, if luggage compartment and engine cabin generation natural gas leaking, but arrive gas leakage by the gas concentration sensor fast detecting, when gas concentration reaches setting value, combustion gas ECU controls alarm unit and sends alerting signal, close pressure reducer high-pressure solenoid valve and electromagnetism bottle-jack valve simultaneously, and stop gas rail assembly is powered, then according to certain power supply order, to fuel injector, power, avoided potential safety hazard, the combustion gas state is switched to the fuel oil state simultaneously, ensure that the CNG automobile can drive to safety place and detect maintenance.
[accompanying drawing explanation]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention.
[specific embodiment]
Refer to Fig. 1, a kind of CNG automotive natural gas is revealed control setup, comprise at least two gas concentration sensors, warning unit and a combustion gas ECU, described combustion gas ECU connects respectively CNG change-over swith, electromagnetism bottle-jack valve, pressure reducer high-pressure solenoid valve, fuel injector, warning unit and gas rail assembly, at least one described gas concentration sensor is located in CNG car engine cabin, and at least one described gas concentration sensor is located in the luggage compartment for placing the CNG gas cylinder.Described warning unit is a Warning light, is located on automobile IP panel that (described IP full name: instrument panel, Chinese: instrument carrier panel), facilitate chaufeur to check, described Warning light plays reminds the driver to carry out malfunction elimination.
When described gas concentration sensor is CH
4during gas concentration sensor, can improve CH
4the detection sensitivity of gas.
Described gas concentration sensor is for detection of the concentration of gas, and concentration signal is changed into to electric signal, and when gas concentration sensor detects in air that the CH4 gas concentration reaches setting value, gas concentration sensor output low level signal is to combustion gas ECU; Described combustion gas ECU receiver gases concentration sensor signal, and judge and control CNG change-over swith, electromagnetism bottle-jack valve, pressure reducer high-pressure solenoid valve, fuel injector, warning unit and gas rail assembly by logic; Described CNG change-over swith receives the signal of combustion gas ECU, switching combustion gas state and fuel oil state; Described warning unit receives the signal of combustion gas ECU, no matter the CNG automobile is in combustion gas state or fuel oil state, combustion gas ECU, under power-up state, as long as receive the low level signal of gas concentration sensor output, controls immediately Warning light and is glimmered with specific frequency; With setpoint frequency, glimmer; Described electromagnetism bottle-jack valve receives the signal of combustion gas ECU, controls the opening and closing of CNG gas cylinder; Described pressure reducer high-pressure solenoid valve receives the signal of combustion gas ECU, controls pressure reducer by high pressure air reducing and passes into the process of low pressure line; Described fuel injector receives combustion gas ECU signal, and the power supply order of based on fuel transfer relay carries out oil spout; Described gas rail assembly receives combustion gas ECU signal, and the power supply of based on fuel transfer relay is carried out jet.
The regulate and control method of this control setup is as follows:
When the CNG automobile is using natural fuels, when if combustion gas ECU detects the low level signal of sensor, combustion gas ECU not only controls Warning light and continues flicker with characteristic frequency, closes pressure reducer high-pressure solenoid valve and electromagnetism bottle-jack valve simultaneously, and system is switched to the fuel oil state.Now the Fuel switching relay in combustion gas ECU stops gas rail assembly is powered (it should be noted that, include the Fuel switching relay in combustion gas ECU), then according to certain power supply order, to fuel injector, powers.Again open and reveal control setup after getting rid of leakage failure, gas concentration sensor does not detect the natural fuels of leakage, and Warning light no longer glimmers with characteristic frequency; If sensor detects the natural fuels of leakage again, Warning light still glimmers with characteristic frequency; The initial condition of combustion gas ECU after at every turn powering on is all to open the natural gas leakage control setup, if need for a change use state of natural gas leakage control setup of people, can be enabled and close several seconds by the CNG change-over swith by long.
The CNG automobile is in traveling process, if luggage compartment and engine cabin generation natural gas leaking, but arrive gas leakage by the gas concentration sensor fast detecting, when gas concentration reaches setting value, combustion gas ECU controls alarm unit and sends alerting signal, close pressure reducer high-pressure solenoid valve and electromagnetism bottle-jack valve simultaneously, and stop gas rail assembly is powered, then according to certain power supply order, to fuel injector, power, avoided potential safety hazard, the combustion gas state is switched to the fuel oil state simultaneously, ensure that the CNG automobile can drive to safety place and detect maintenance.
Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (3)
1. a CNG automotive natural gas is revealed control setup, it is characterized in that: comprise at least two gas concentration sensors, warning unit and a combustion gas ECU, described combustion gas ECU connects respectively CNG change-over swith, electromagnetism bottle-jack valve, pressure reducer high-pressure solenoid valve, fuel injector, warning unit and gas rail assembly, at least one described gas concentration sensor is located in CNG car engine cabin, and at least one described gas concentration sensor is located in the luggage compartment for placing the CNG gas cylinder.
2. a kind of CNG automotive natural gas according to claim 1 is revealed control setup, and it is characterized in that: described gas concentration sensor is CH
4gas concentration sensor.
3. a kind of CNG automotive natural gas according to claim 1 is revealed control setup, and it is characterized in that: described warning unit is a Warning light, and described Warning light is located on automobile IP panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103588167A CN103448534A (en) | 2013-08-16 | 2013-08-16 | Natural gas leakage control device for CNG (compressed natural gas) automobile |
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| CN2013103588167A CN103448534A (en) | 2013-08-16 | 2013-08-16 | Natural gas leakage control device for CNG (compressed natural gas) automobile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153894A (en) * | 2014-09-05 | 2014-11-19 | 杭州易随科技有限公司 | Fuel gas dual-fuel electrical control device with fuel gas leakage alarm function, and fuel gas leakage detection and alarming method |
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
| CN104565818A (en) * | 2015-01-27 | 2015-04-29 | 张家港亚楠汽车电器有限公司 | Vehicular natural gas detection device |
| CN105096538A (en) * | 2014-05-19 | 2015-11-25 | 浙江道为尔科技有限公司 | Gas leakage alarm device for gas car |
| CN106128044A (en) * | 2016-08-23 | 2016-11-16 | 重庆盟讯电子科技有限公司 | A kind of gas combustion automobile tolerance display leakage alarm |
| CN107054064A (en) * | 2017-01-17 | 2017-08-18 | 深圳明创自控技术有限公司 | A kind of vehicle-mounted gas bomb state monitoring apparatus |
| CN112590554A (en) * | 2020-12-23 | 2021-04-02 | 武汉格罗夫氢能汽车有限公司 | Safety control system for fuel gas leakage of hydrogen energy automobile |
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| CN201532688U (en) * | 2009-07-27 | 2010-07-21 | 靳宝婷 | Gas leakage alarm control safe device for gas-fired automobile |
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| CN203449920U (en) * | 2013-08-16 | 2014-02-26 | 东南（福建）汽车工业有限公司 | Natural gas leakage control device for CNG (Compressed Natural Gas) automobile |
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| KR20020018768A (en) * | 2000-09-04 | 2002-03-09 | 이계안 | An alarm system of gas leakage for cng vehicles |
| CN2536433Y (en) * | 2002-03-25 | 2003-02-19 | 四川华油天然气汽车开发有限责任公司 | Gas vehicle electric controller |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096538A (en) * | 2014-05-19 | 2015-11-25 | 浙江道为尔科技有限公司 | Gas leakage alarm device for gas car |
| CN104153894A (en) * | 2014-09-05 | 2014-11-19 | 杭州易随科技有限公司 | Fuel gas dual-fuel electrical control device with fuel gas leakage alarm function, and fuel gas leakage detection and alarming method |
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
| CN104494443B (en) * | 2014-12-11 | 2017-02-01 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
| CN104565818A (en) * | 2015-01-27 | 2015-04-29 | 张家港亚楠汽车电器有限公司 | Vehicular natural gas detection device |
| CN106128044A (en) * | 2016-08-23 | 2016-11-16 | 重庆盟讯电子科技有限公司 | A kind of gas combustion automobile tolerance display leakage alarm |
| CN107054064A (en) * | 2017-01-17 | 2017-08-18 | 深圳明创自控技术有限公司 | A kind of vehicle-mounted gas bomb state monitoring apparatus |
| CN112590554A (en) * | 2020-12-23 | 2021-04-02 | 武汉格罗夫氢能汽车有限公司 | Safety control system for fuel gas leakage of hydrogen energy automobile |
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Application publication date: 20131218 |