CN105840349A - Rail type gas injection method for dual-fuel automobile - Google Patents
Rail type gas injection method for dual-fuel automobile Download PDFInfo
- Publication number
- CN105840349A CN105840349A CN201610185142.9A CN201610185142A CN105840349A CN 105840349 A CN105840349 A CN 105840349A CN 201610185142 A CN201610185142 A CN 201610185142A CN 105840349 A CN105840349 A CN 105840349A
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- CN
- China
- Prior art keywords
- groove
- hollow pipe
- combustion gas
- electric heating
- spray
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- 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.)
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Classifications
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
-
- 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 discloses a rail type gas injection method for a dual-fuel automobile. The rail type gas injection method involves a gas inlet pipe and a hollow pipe. A groove with the section being a major arc is formed in the inner wall of the hollow pipe, and injection holes right face the arc bottom of the groove. A plurality of electric heating pipes are installed in the groove. Guide blocks are installed at the bottoms of the electric heating pipes. Guide grooves matched with the guide blocks are formed in the bottom of the groove. Each electric heating pipe comprises a pipe body, an insulating material stuffed into the pipe body, and an electric heating wire arranged in the pipe body. The tail ends of the electric heating wires are connected with binding posts. The wiring posts penetrate through small holes to be connected with a wiring plugboard. The open end of the groove is covered with a heat conducting plate. The electric heating pipes are placed in the arc groove, the lateral end of the groove is sealed with the wiring plugboard, and therefore the electric heating pipes are conveniently taken and placed while heat loss can be reduced, that is, a user can determine the number of the electric heating pipes in real time according to the fuel gas supply quantity, and the effect that stable operation of the fuel gas output flow is completed at the minimum heating cost is guaranteed.
Description
Technical field
The present invention relates to gas injection rail, specifically refer to the rail mounted jet method of a kind of dual-fuel automobile.
Background technology
Gas injection rail is necessaries on CNG-gasoline double-fuel car, but when temperature is relatively low, low temperature makes the contraction of gas in low pressure line, forms negative pressure, make gas injection rail open and be difficult between combustion gas common rail and filter, affects the normal use of gas burning system；By the way of we use hydro-thermal, gas injection rail is heated so that it is can normally work, however it is necessary that installation water route, increase pipeline and interfere, fluid leakage easily occurs, increase maintenance difficulties.
Summary of the invention
It is an object of the invention to provide the rail mounted jet method of a kind of dual-fuel automobile, it is ensured that combustion gas normal through, avoid fuel gas pipeline occurs liquid simultaneously.
The purpose of the present invention is achieved through the following technical solutions:
nullA kind of rail mounted jet method of dual-fuel automobile，Including air inlet pipe and hollow pipe in communication，Multiple spray-hole is had in hollow pipe upper end，And correspondence is provided with electromagnetic valve on described spray-hole，The groove that cross section is major arc is had at described hollow pipe inwall，And at the bottom of described spray-hole just arc to described groove，Multiple electrothermal tube is installed in described groove，Guide pad is installed bottom electrothermal tube，And the gathering sill matched with guide pad is had at bottom portion of groove，Described electrothermal tube includes body、It is filled in the insulant of tubular body and is placed in the heating wire of tubular body，Described heating wire end connects binding post，Groove has, away from one end of air inlet pipe, the aperture being in communication with the outside，Binding post runs through aperture and is connected with wiring plate，And on the open end of groove, it is coated with heat-conducting plate，Described inside grooves is separated by heat-conducting plate with hollow tube；Also including that the overheat protector being placed on hollow pipe inwall, described overheat protector one end are connected with wiring plate, the overheat protector other end is connected with external power source.When the present invention works, combustion gas is injected directly in hollow pipe by air inlet pipe, and after being flowed in electromagnetic valve by spray-hole, accurately regulating and then guaranteeing that combustion gas is maintained at optimal flow output through electromagnetic valve；And relatively low for the air pressure in prior art mesolow pipeline and between the spray rail and the filter that cause, the situation of negative pressure occurs, the present invention just has groove at inwall to spray-hole at hollow pipe, and the cross section of groove is major arc shape, will wrap up in the gas circulation region in hollow pipe, utilize the caloric value of electrothermal tube and the heat transfer of heat-conducting plate, make combustion gas in the ambient temperature entered before hollow pipe in hollow pipe relative to extraneous temperature drift, i.e. pressure in hollow pipe raises, after combustion gas enters hollow pipe, combustion gas is heated up to a certain extent, effectively prevent and produce negative pressure between spray rail and filter and affect the flow velocity of combustion gas, ensure the normal circulation of combustion gas.And, use Electric heating compared with hydro-thermal mode, while there is liquid risk of leakage, the efficiency of heating is greatly improved, and multiple electric heating tube is placed in the groove of arc, is sealed the side of groove by wiring plate, heat loss can be reduced, be also convenient for picking and placeing electrothermal tube, i.e. user can determine the number of electrothermal tube in real time according to the size of fuel gas supply amount simultaneously, it is ensured that completes the stable operation to combustion gas output flow with minimum heating cost；The body bottom of electrothermal tube is provided with guide pad simultaneously; guide pad coordinates with gathering sill; make laying of body more stable; i.e. need not increase new fixed structure and be just capable of the fastening of electrothermal tube; reach optimize spray rail internal structure purpose, and the overheat protector installed can overheated at heating wire or cross stream time timely deenergization, it is to avoid occur heating wire overload and impaired; power supply is reconnected, to ensure continual and steady heating internal to spray rail when temperature keeps stablizing.
Between multiple described electrothermal tubes parallel with one another.During the lasting use of electrothermal tube, the loss of electrothermal tube is relatively large, the most multiple electrothermal tubes there will be the faults such as damage or short circuit, and multiple electrothermal tubes are arranged to parallel connection by the present invention, i.e. when single electrothermal tube breaks down, do not interfere with the normal use of remaining electrothermal tube, to prevent from spraying the output flow deficiency forming negative pressure between rail and filter and cause combustion gas at low ambient temperatures.
Multiple described electrothermal tubes are evenly distributed in the circular arc passage that described groove and heat-conducting plate are formed.As preferably, multiple electrothermal tubes are uniformly distributed so that in hollow pipe, the circulation environment of combustion gas is all the time by the homogeneous radiation of heat, there is not the situation that local temperature is too high or too low, thoroughly stop to spray at low ambient temperatures and negative pressure condition occurs between rail and filter, improve the circulation efficiency of combustion gas.
Being also equipped with aluminium bar at described tubular body, described heating wire winding is on described aluminium bar.When heating wire transships or crosses stream, it is easily caused power of heating wire decline or directly produce fusing, and the aluminium bar installed in body is wound around by heating wire, can ensure that within the regular hour heating wire works on, it is to avoid between spray rail and filter, again form the output flow deficiency of negative pressure and combustion gas.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention uses Electric heating compared with hydro-thermal mode, while there is liquid risk of leakage, the efficiency of heating is greatly improved, and multiple electric heating tube is placed in the groove of arc, by wiring plate, the side of groove is sealed, heat loss can be reduced, be also convenient for electrothermal tube is picked and placeed simultaneously, i.e. user can determine the number of electrothermal tube in real time according to the size of fuel gas supply amount, it is ensured that completes the stable operation to combustion gas output flow with minimum heating cost；
2, the present invention uses Electric heating compared with hydro-thermal mode, while there is liquid risk of leakage, the efficiency of heating is greatly improved, and multiple electric heating tube is placed in the groove of arc, by wiring plate, the side of groove is sealed, heat loss can be reduced, be also convenient for electrothermal tube is picked and placeed simultaneously, i.e. user can determine the number of electrothermal tube in real time according to the size of fuel gas supply amount, it is ensured that completes the stable operation to combustion gas output flow with minimum heating cost；
3, multiple electrothermal tubes are uniformly distributed by the present invention, make in hollow pipe the circulation environment of combustion gas all the time by the homogeneous radiation of heat, there is not the situation that local temperature is too high or too low, thoroughly stop to spray at low ambient temperatures negative pressure condition occurs between rail and filter, improve the circulation efficiency of combustion gas.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the structural representation of electrothermal tube；
Labelling and corresponding parts title in accompanying drawing:
1-air inlet pipe, 2-hollow pipe, 3-spray-hole, 4-groove, 5-heat-conducting plate, 6-electromagnetic valve, 7-electrothermal tube, 8-wiring plate, 9-overheat protector, 10-body, 11-insulant, 12-heating wire, 13-guide pad, 14-aluminium bar, 15-binding post.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
nullAs shown in Fig. 1 ~ Fig. 3，The present embodiment includes air inlet pipe 1 and hollow pipe 2 in communication，Multiple spray-hole 3 is had in hollow pipe 2 upper end，And correspondence is provided with electromagnetic valve 6 on described spray-hole 3，The groove 4 that cross section is major arc is had at described hollow pipe 2 inwall，And at the bottom of described spray-hole 3 just arc to described groove 4，Multiple electrothermal tube 7 is installed in described groove 4，Guide pad 13 is installed bottom electrothermal tube 7，And bottom groove 4, have the gathering sill matched with guide pad 13，Described electrothermal tube 7 includes body 10、It is filled in the insulant 11 within body 10 and is placed in the heating wire 12 within body 10，Described heating wire 12 end connects binding post 15，Groove 4 has, away from one end of air inlet pipe 1, the aperture being in communication with the outside，Binding post 15 runs through aperture and is connected with wiring plate 8，And on the open end of groove 4, it is coated with heat-conducting plate 5，Heat-conducting plate 5 is by described groove 4 inside and spaced-apart in hollow pipe 2；Also including that the overheat protector 9 being placed on hollow pipe 2 inwall, described overheat protector 9 one end are connected with wiring plate 8, overheat protector 9 other end is connected with external power source.
During work, combustion gas is injected directly in hollow pipe 2 by air inlet pipe 1, and is flowed into after in electromagnetic valve 6 by spray-hole 3, accurately regulating and then guaranteeing that combustion gas is maintained at optimal flow output through electromagnetic valve 6；And relatively low for the air pressure in prior art mesolow pipeline and between the spray rail and the filter that cause, the situation of negative pressure occurs, the present embodiment just has groove 4 at inwall to spray-hole 3 at hollow pipe 2, and the cross section of groove 4 is major arc shape, will wrap up in the gas circulation region in hollow pipe 2, utilize caloric value and the heat transfer of heat-conducting plate 5 of electrothermal tube 7, make combustion gas in the ambient temperature entered before hollow pipe 2 in hollow pipe 2 relative to extraneous temperature drift, i.e. pressure in hollow pipe 2 raises, after combustion gas enters hollow pipe 2, combustion gas is heated up to a certain extent, effectively prevent and produce negative pressure between spray rail and filter and affect the flow velocity of combustion gas, ensure the normal circulation of combustion gas.
And, use Electric heating compared with hydro-thermal mode, while there is liquid risk of leakage, the efficiency of heating is greatly improved, and multiple electric heating tube is placed in the groove 4 of arc, is sealed the side of groove 4 by wiring plate 8, heat loss can be reduced, it is also convenient for picking and placeing electrothermal tube 7, i.e. user simultaneously and can determine the number of electrothermal tube 7 according to the size of fuel gas supply amount in real time, it is ensured that complete the stable operation to combustion gas output flow with minimum heating cost；Body 10 bottom of electrothermal tube 7 is provided with guide pad 13 simultaneously; guide pad 13 coordinates with gathering sill; make laying of body 10 more stable; i.e. need not increase new fixed structure and be just capable of the fastening of electrothermal tube 7; reach to optimize the purpose of spray rail internal structure; and the overheat protector 9 installed can overheated at heating wire 12 or cross stream time timely deenergization; avoid the occurrence of heating wire 12 to transship and impaired; power supply is reconnected, to ensure continual and steady heating internal to spray rail when temperature keeps stablizing.
Wherein, during the lasting use of electrothermal tube 7, the loss of electrothermal tube 7 is relatively large, the most multiple electrothermal tubes 7 there will be the faults such as damage or short circuit, and multiple electrothermal tubes 7 are arranged to parallel connection by the present embodiment, i.e. when single electrothermal tube 7 breaks down, do not interfere with the normal use of remaining electrothermal tube 7, to prevent from spraying the output flow deficiency forming negative pressure between rail and filter and cause combustion gas at low ambient temperatures.
As preferably, multiple electrothermal tubes 7 are uniformly distributed, make in hollow pipe 2 circulation environment of combustion gas all the time by the homogeneous radiation of heat, there is not the situation that local temperature is too high or too low, thoroughly stop to spray at low ambient temperatures and negative pressure condition occurs between rail and filter, improve the circulation efficiency of combustion gas.
As preferably, being also equipped with aluminium bar 14 inside described body 10, described heating wire 12 is wrapped on described aluminium bar 14.When heating wire 12 transships or crosses stream, it is easily caused heating wire 12 power drop or directly produces fusing, and the aluminium bar 14 installed in body 10 is wound around by heating wire 12, can ensure that within the regular hour heating wire 12 works on, it is to avoid between spray rail and filter, again form the output flow deficiency of negative pressure and combustion gas.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (4)
- null1. the rail mounted jet method of a dual-fuel automobile，Including air inlet pipe (1) and hollow pipe (2) in communication，Multiple spray-hole (3) is had in hollow pipe (2) upper end，And in described spray-hole (3) upper correspondence, electromagnetic valve (6) is installed，It is characterized in that: have, at described hollow pipe (2) inwall, the groove (4) that cross section is major arc，And at the bottom of described spray-hole (3) just arc to described groove (4)，Multiple electrothermal tube (7) is installed in described groove (4)，Electrothermal tube (7) bottom is provided with guide pad (13)，And have, in groove (4) bottom, the gathering sill matched with guide pad (13)，Described electrothermal tube (7) includes body (10)、It is filled in the internal insulant (11) of body (10) and is placed in the heating wire (12) that body (10) is internal，Described heating wire (12) end connects binding post (15)，Groove (4) has, away from one end of air inlet pipe (1), the aperture being in communication with the outside，Binding post (15) runs through aperture and is connected with wiring plate (8)，And on the open end of groove (4), it is coated with heat-conducting plate (5)，Heat-conducting plate (5) is by internal for described groove (4) and hollow pipe (2) interior spaced-apart；Also including the overheat protector (9) being placed on hollow pipe (2) inwall, described overheat protector (9) one end is connected with wiring plate (8), and overheat protector (9) other end is connected with external power source；Combustion gas is injected directly in hollow pipe by air inlet pipe, and after being flowed in electromagnetic valve by spray-hole, accurately regulating and then guaranteeing that combustion gas is maintained at optimal flow output through electromagnetic valve；And relatively low for the air pressure in prior art mesolow pipeline and between the spray rail and the filter that cause, the situation of negative pressure occurs, just groove is had at inwall to spray-hole at hollow pipe, and the cross section of groove is major arc shape, will wrap up in the gas circulation region in hollow pipe, utilize the caloric value of electrothermal tube and the heat transfer of heat-conducting plate, make combustion gas in the ambient temperature entered before hollow pipe in hollow pipe relative to extraneous temperature drift, i.e. pressure in hollow pipe raises, after combustion gas enters hollow pipe, combustion gas is heated up to a certain extent, effectively prevent and produce negative pressure between spray rail and filter and affect the flow velocity of combustion gas, ensure the normal circulation of combustion gas.
- The rail mounted jet method of a kind of dual-fuel automobile the most according to claim 1, it is characterised in that: parallel with one another between multiple described electrothermal tubes (7).
- The rail mounted jet method of a kind of dual-fuel automobile the most according to claim 1, it is characterised in that: multiple described electrothermal tubes (7) are evenly distributed in the circular arc passage that described groove (4) and heat-conducting plate (5) are formed.
- The most according to claim 1 a kind of have the anti-gas injection rail gradually freezing function, it is characterised in that: being also equipped with aluminium bar (14) described body (10) is internal, described heating wire (12) is wrapped on described aluminium bar (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185142.9A CN105840349A (en) | 2016-03-29 | 2016-03-29 | Rail type gas injection method for dual-fuel automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185142.9A CN105840349A (en) | 2016-03-29 | 2016-03-29 | Rail type gas injection method for dual-fuel automobile |
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| Publication Number | Publication Date |
|---|---|
| CN105840349A true CN105840349A (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610185142.9A Pending CN105840349A (en) | 2016-03-29 | 2016-03-29 | Rail type gas injection method for dual-fuel automobile |
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| Country | Link |
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| CN (1) | CN105840349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387266A (en) * | 2017-09-07 | 2017-11-24 | 广西玉柴机器股份有限公司 | A kind of fuel gas ejecting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604743A (en) * | 2016-01-29 | 2016-05-25 | 成都杜嘉机电有限公司 | Gas injection device for automobile |
-
2016
- 2016-03-29 CN CN201610185142.9A patent/CN105840349A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604743A (en) * | 2016-01-29 | 2016-05-25 | 成都杜嘉机电有限公司 | Gas injection device for automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387266A (en) * | 2017-09-07 | 2017-11-24 | 广西玉柴机器股份有限公司 | A kind of fuel gas ejecting device |
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Application publication date: 20160810 |
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| RJ01 | Rejection of invention patent application after publication |