CN101025130A - Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system - Google Patents
Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system Download PDFInfo
- Publication number
- CN101025130A CN101025130A CNA2007100554727A CN200710055472A CN101025130A CN 101025130 A CN101025130 A CN 101025130A CN A2007100554727 A CNA2007100554727 A CN A2007100554727A CN 200710055472 A CN200710055472 A CN 200710055472A CN 101025130 A CN101025130 A CN 101025130A
- Authority
- CN
- China
- Prior art keywords
- lpg
- pipeline
- fuel
- pressure
- jar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention relates to a fuel supply system for automobile engine, especially relating to a mono-fuel LPG automobile fuel tank pressure keeping system, on the basis of a gas supply pipeline composed of LPG cylinder, manual valves, evaporator, LPG fuel rail, adding a pipeline, which is a pipeline for LPG fuel rail to return to gas phase mouth of the LPG cylinder via one manual valve and in which a one-way pressure regulating valve is connected in series. And it mainly solves the problem that in the winter in cold regions, fuel supply is not smooth and the engine power is deficient when the saturated vapour pressure is critically low in the LPG cylinder; in addition, when large amounts of abnormal liquid LPG enters the pipeline between the evaporator and the fuel rail, the evaporated LPG makes pipeline pressure quickly increase, and when the high pressure causes the sprayer can not be opened, the system can avoid pipeline stall, even pipeline explosion and fire happening in this pipeline segment.
Description
Technical field
The present invention relates to motor car engine automotive fuel supply system, particularly relate to a kind of single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system.
Background technique
In single-fuel liquefied petroleum gas (LPG) (LPG) automotive fuel supply system, liquid phase LPG flows out from the LPG jar and enters vaporizer, be subjected to the preheating of high temperature coolant, liquid phase LPG carburation by evaporation also enters the fuel gas rail, quantitatively periodically combustion gas is sprayed into the engine intake place by engine electric-controlled unit control gas nozzle again, enter engine combustion subsequently.But in cold area winter, because ambient air temperature low (can reach subzero 20 ℃ even lower), saturated vapour drops in the LPG jar causes LPG to transport pressure and reduces, and fuel supply is not smooth, the engine power deficiency; In addition, in general LPG system, there is not LPG steam-return line (promptly not from the gas rail through unidirectional pressure regulator valve again to the pipeline of LPG jar), when certain reason has relatively large liquid phase LPG to enter pipeline between the gentle rail of vaporizer, be subjected to the LPG of thermal evaporation that pipeline inner pressure is raise rapidly, but, general LPG sparger just can't be opened when gas rail internal pressure is higher than a certain value, thereby cause between the gentle rail of vaporizer and form dead end, during overpressure, pipeline bursts, breaking out of fire, and domestic had similar incident to take place.Though at present single-fuel LPG automobile has obtained extensive use with the advantage of its energy environment protection on city bus and taxi, above-mentioned drawbacks limit it in the cold area application in winter.
Summary of the invention
The purpose of patent of the present invention is to have designed a cover single-fuel liquefied petroleum gas automobile cylinder pressure-retaining system, and it has the function to pressurize of LPG fuel pot and safety protection.
Above-mentioned purpose of the present invention is achieved in that accompanying drawings is as follows:
A kind of fuel pot pressure-retaining system of single-fuel liquefied petroleum gas automobile, on the supply air line basis of forming by LPG jar 9, hand valve 10, vaporizer 5, LPG gas rail 6 and hand valve 8, increase a pipeline again, this pipeline is for being got back to the pipeline of LPG jar 9 gas phase mouths through unidirectional pressure regulator valve 7 and hand valve 8 by LPG gas rail 6.
When the saturation vapour pressure in the said LPG jar 9 is lower than LPG gas rail 6 normal injection pressure, the LPG steam of process vaporizer 5 preheatings will enter the gas phase mouth of LPG jar 9 by gas rail 6 and unidirectional pressure regulator valve 7, to 9 pressurizations of LPG jar.
Said unidirectional pressure regulator valve 7 ends when saturation vapour pressure in the LPG jar 9 during greater than engine air track 6 normal injection pressure, and LPG steam does not enter LPG jar 9, and a LPG flows backwards from the gas phase mouth in also stoping jar.
This pressure-retaining system is when ambient temperature is low, when if the saturation vapour pressure in the LPG jar 9 is lower than LPG gas rail 6 normal injection pressure, LPG steam through vaporizer 5 preheatings will enter the gas phase mouth of LPG jar 9 by gas rail 6 and unidirectional pressure regulator valve 7, to jar 9 pressurizations, guarantee the pressure that transports of LPG; When saturation vapour pressure in the LPG jar 9 during greater than engine air track 6 normal injection pressure, unidirectional pressure regulator valve 7 ends, and LPG steam does not enter LPG jar 9, and a LPG flows backwards from the gas phase mouth in also stoping jar;
This pressure-retaining system also has safety protection function; when certain reason has relatively large liquid phase LPG to enter pipeline between the vaporizer 5 gentle rails 6; be subjected to the LPG of thermal evaporation that pipeline inner pressure is raise rapidly; LPG steam in the gas rail 6 flows back to the LPG jar by unidirectional pressure regulator valve 7; avoided between LPG gas rail and vaporizer, forming dead end; pressure height to LPG sparger can't be opened, even cause pipeline to burst, the phenomenon of breaking out of fire.
Patent of the present invention has low cost of manufacture, characteristics that investment for trnasforming urban land is few, helps large-scale promotion application.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
Among the figure: 1. motor 2. thermostat valves 3. radiators 4. water pumps 5. vaporizers 6. gas rails 7. unidirectional pressure regulator valve 8. hand valve 9.LPG jars 10. hand valves
Embodiment
When ambient temperature is low, when if the saturation vapour pressure in the LPG jar 9 is lower than LPG gas rail 6 normal injection pressure, LPG steam through vaporizer 5 preheatings will enter the gas phase mouth of LPG jar 9 by gas rail 6 and unidirectional pressure regulator valve 7, to jar 9 pressurizations, guarantee the pressure that transports of LPG; When saturation vapour pressure in the LPG jar 9 during greater than engine air track 6 normal injection pressure, unidirectional pressure regulator valve 7 ends, and LPG steam does not enter LPG jar 9, and a LPG flows backwards from the gas phase mouth in also stoping jar;
This pressure-retaining system also has safety protection function; when certain reason has relatively large liquid phase LPG to enter pipeline between the vaporizer 5 gentle rails 6; be subjected to the LPG of thermal evaporation that pipeline inner pressure is raise rapidly; LPG steam in the gas rail 6 flows back to the LPG jar by unidirectional pressure regulator valve 7; avoided between LPG gas rail and vaporizer, forming dead end; pressure height to LPG sparger can't be opened, even cause pipeline to burst, the phenomenon of breaking out of fire.
Claims (3)
1, a kind of fuel pot pressure-retaining system of single-fuel liquefied petroleum gas automobile, it is characterized in that on the supply air line basis of forming by LPG jar (9), hand valve (10), vaporizer (5), LPG gas rail (6) and hand valve (8), increase a pipeline again, this pipeline is connected in series unidirectional pressure regulator valve (7) therebetween for to handle the pipeline that valve (8) is got back to LPG jar (9) gas phase mouth by LPG gas rail (6).
2, the fuel pot pressure-retaining system of single-fuel liquefied petroleum gas automobile according to claim 1, when it is characterized in that saturation vapour pressure in the said LPG jar (9) is lower than LPG gas rail (6) normal injection pressure, LPG steam through vaporizer (5) preheating will enter the gas phase mouth of LPG jar (9) by gas rail (6) and unidirectional pressure regulator valve (7), and LPG jar (9) is pressurizeed.
3, the fuel pot pressure-retaining system of single-fuel liquefied petroleum gas automobile according to claim 1, it is characterized in that said when saturation vapour pressure in the LPG jar (9) during greater than engine air track (6) normal injection pressure, unidirectional pressure regulator valve (7) ends, LPG steam does not enter LPG jar (9), stops a jar interior LPG to flow backwards from the gas phase mouth yet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100554727A CN101025130A (en) | 2007-04-02 | 2007-04-02 | Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100554727A CN101025130A (en) | 2007-04-02 | 2007-04-02 | Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101025130A true CN101025130A (en) | 2007-08-29 |
Family
ID=38743690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100554727A Pending CN101025130A (en) | 2007-04-02 | 2007-04-02 | Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101025130A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220921A (en) * | 2010-04-13 | 2011-10-19 | 上海格令汽车电子有限公司 | Integrated gas supply device for gaseous propellant engine system |
| CN102374013A (en) * | 2010-08-16 | 2012-03-14 | 福特环球技术公司 | Method for operating an internal combustion engine with gas as a fuel, and internal combustion engine executing the method |
| CN102733996A (en) * | 2012-06-28 | 2012-10-17 | 奇瑞汽车股份有限公司 | Gas injection rail arrangement structure for vehicle |
| CN103122809A (en) * | 2011-11-17 | 2013-05-29 | 现代自动车株式会社 | Pressure sustaining system for lpg bombe |
-
2007
- 2007-04-02 CN CNA2007100554727A patent/CN101025130A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220921A (en) * | 2010-04-13 | 2011-10-19 | 上海格令汽车电子有限公司 | Integrated gas supply device for gaseous propellant engine system |
| CN102374013A (en) * | 2010-08-16 | 2012-03-14 | 福特环球技术公司 | Method for operating an internal combustion engine with gas as a fuel, and internal combustion engine executing the method |
| US9175599B2 (en) | 2010-08-16 | 2015-11-03 | Ford Global Technologies, Llc | Method for operating an internal combustion engine with gas as a fuel |
| CN102374013B (en) * | 2010-08-16 | 2016-06-29 | 福特环球技术公司 | Use gas as the How It Works of the internal combustion engine of fuel and the internal combustion engine performing described method |
| CN103122809A (en) * | 2011-11-17 | 2013-05-29 | 现代自动车株式会社 | Pressure sustaining system for lpg bombe |
| CN102733996A (en) * | 2012-06-28 | 2012-10-17 | 奇瑞汽车股份有限公司 | Gas injection rail arrangement structure for vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203702377U (en) | High-power LNG engine gas supply system | |
| CN104564393A (en) | Usage strategy for mixed gasoline and CNG fueled vehicles | |
| WO2015098092A1 (en) | Liquefied fuel gas evaporation promoting device and fuel gas supply system for ships | |
| CN101025130A (en) | Single-fuel liquified-petroleum-gas automobile fuel cylinder pressure-retaining system | |
| CN105089857A (en) | LNG-CNG dual fuel power gas supply system and natural gas automobile | |
| US20130333666A1 (en) | Internal combustion engine | |
| CN106401714A (en) | Mechanical spray nozzle type ammonia gas injection system used for tail gas treatment of automobile diesel engine | |
| CN102733997A (en) | LNG (Liquid Natural Gas) passenger bus provided with gas heater | |
| CN202381978U (en) | Lossless single-pipeline refueling station | |
| CN106401712A (en) | Electric-control spray nozzle type ammonia gas injection system used for tail gas treatment of diesel engine | |
| KR20140052815A (en) | Hybrid fuel supply system | |
| CN103528260B (en) | A kind of automotive air-conditioning system utilizing residual heat of tail gas of automobile | |
| CN203730162U (en) | Inlet gas temperature control system of liquefied natural gas engine | |
| EP3548794B1 (en) | A fuel tank arrangement | |
| KR20030073975A (en) | Boil off gas management method and system assembly of Liquefied Natural Gas Carrier | |
| CN101353993A (en) | Intelligent heat exchange system of diesel | |
| CA2365521C (en) | Systems for delivering liquified natural gas to an engine | |
| CN201190605Y (en) | Water cooled fuel cooling vessel | |
| CN205446280U (en) | Oil tank cooling device suitable for LNG bull -dozer | |
| CN202659376U (en) | LNG (liquefied natural gas) passenger car provided with gas-fuel heater | |
| CN206016915U (en) | A kind of automatically controlled nozzle-type ammonia spraying system for diesel engine vent gas process | |
| CN104100412A (en) | Automobile gasoline carburetor and operation method thereof | |
| CN103527356A (en) | Gasoline vaporizer | |
| CN2791285Y (en) | Fuel return-oil cooling device for light hydrocarbon LPG fuel automobile | |
| RU2525778C2 (en) | Method for internal combustion engine starting at low temperatures and device for its implementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |