CN104863730B - Suitching type fuel system, engine and generating set - Google Patents
Suitching type fuel system, engine and generating set Download PDFInfo
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- CN104863730B CN104863730B CN201510248981.6A CN201510248981A CN104863730B CN 104863730 B CN104863730 B CN 104863730B CN 201510248981 A CN201510248981 A CN 201510248981A CN 104863730 B CN104863730 B CN 104863730B
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- fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 50
- 239000000567 combustion gas Substances 0.000 claims abstract description 49
- 239000000295 fuel oil Substances 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000002551 biofuel Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Include the combustion gas electrically-controlled valve in engine gas input channel, the fuel oil electrically-controlled valve in engine fuel input channel and the conversion circuit opened and closed for controlling combustion gas electrically-controlled valve and fuel oil electrically-controlled valve the invention discloses a kind of suitching type fuel system；The present invention is using the structure that electrically-controlled valve is arranged on fuel oil and blast tube; and it is controlled using change-over switch; for engine; it can be in the non-stop-machine switching for freely completing fuel of engine; it is easy to use; frequent start-stop engine during switching fuel is avoided, ensures the service life of engine；This system is applied not only to double fuel switching, it may also be used for multi fuel switches, and has well adapting to property.
Description
Technical field
The present invention relates to a kind of generating set and accessory, more particularly to a kind of suitching type fuel system, engine and
Generating set.
Background technology
Dual fuel engine is due to using selectable two kinds of fuel, with stronger adaptability and environmental-protecting performance, therefore,
Obtain relatively broad application；When existing dual fuel engine carries out Fuel switching in use, using manually, electrically
Mode carry out, need after shutting down engine, close the fuel oil or fuel gas supply access in original use, then open again
The supply passageway of combustion gas or fuel oil restarts engine, and this mode use is extremely inconvenient, and frequently shuts down startup pair
Engine impacts, and influences the service life of engine.
Therefore, it is necessary to which existing engine suitching type fuel system to be improved, can not be shut down in engine
In the case of freely complete the switching of fuel, it is easy to use, avoid frequent start-stop engine during switching fuel, ensure
The service life of engine.
Invention content
In view of this, the present invention provides a kind of suitching type fuel system, it is used for engine, can not be stopped in engine
The switching of fuel is freely completed in the case of machine, it is easy to use, frequent start-stop engine during switching fuel is avoided, is protected
Demonstrate,prove the service life of engine.
The suitching type fuel system of the present invention includes that combustion gas in engine gas input channel is automatically controlled
It valve, the fuel oil electrically-controlled valve in engine fuel input channel and is opened and closed for controlling combustion gas electrically-controlled valve and fuel oil electrically-controlled valve
Conversion circuit；The switching between double fuel is realized by the way of combustion gas electrically-controlled valve and fuel oil electrically-controlled valve, is quick on the draw, and is switched
Rapidly, it is ensured that the supply of fuel, to ensure not shut down realization switching；The combustion gas electrically-controlled valve and fuel oil electrically-controlled valve of the present invention is only
To refer to, not necessarily using fuel-firing gas-firing as raw material, may also comprise between bio-fuel and combustion gas or structure between fuel oil
At double fuel, details are not described herein；Conversion circuit can be used general manual switch, motor switch or directly be formed by ECU
Control.
Further, the conversion circuit is included at least for driving power selectively access combustion gas electrically-controlled valve or fuel oil is electric
Control the change-over switch of valve；It is formed and is switched using change-over switch, simple in structure, cost is relatively low.
Further, further include controlling engine start or the startup control switch of stopping, the startup control, which switchs, to be sent out
Driving power is being started by change-over switch selectively access combustion gas electrically-controlled valve or fuel oil electrically-controlled valve when motivation is started and run
Machine cuts off driving power when stopping, to close combustion gas electrically-controlled valve and fuel oil electrically-controlled valve；Switch formation pair is controlled using starting
The chain control of change-over switch, ensure that be formed between the keying and operation and change-over switch of engine and is associated with, and ensure two kinds of combustions
The consistency that the switching of material is opened and closed and run with engine, ensure that the normal operation of engine.
Further, before the combustion gas electrically-controlled valve is connected to the LPG pressure reducing valves of engine gas input channel, it is conducive to ensure defeated
Enter the stationarity of the combustion gas of engine.
Further, the startup control switch passes through change-over switch and connects with the flame-out port and startup control switch being grounded
It is connected to the ignition coil of engine and starts putting out for control switch when the fuel oil electrically-controlled valve is connected engine operation and need to be stopped
Fire end mouth passes sequentially through startup control switch, change-over switch connection ignition coil, starts control switch cutoff driving power；Start
When control switch is positioned at engine start and operating status, starts control switch and disconnect flame-out port and be connected to driving power
Change-over switch simultaneously passes through change-over switch selectively access combustion gas electrically-controlled valve or fuel oil electrically-controlled valve；Flame-out port is typically grounded, to arrive
Ground stops working structure；Above-mentioned startup control switch can be used existing contact switch and realize its function, i.e., will stop, starting and running
It is integrated in same switch, and carries out selection use as needed, details are not described herein；Certainly, it can also be realized by ECU automatic
Control.
Further, when the combustion gas electrically-controlled valve is connected engine operation and need to be stopped, starting control switch cutoff driving electricity
Source can close combustion gas electrically-controlled valve only in such a way that starting switch disconnects driving power, air inlet be disconnected, due to electromagnetic coil
It is not connect with flame-out port, therefore, ignition coil continues to light a fire, and engine will continue to the remaining fuel gas of after-flame, to protect
Card safety.
Further, the combustion gas electrically-controlled valve and fuel oil electrically-controlled valve are normally closed solenoid valve, easily controllable, are had preferable
Sensitivity.
Further, the change-over switch includes switch I and switch II, and the switch I is automatically controlled for selectivity access combustion gas
Valve or fuel oil electrically-controlled valve, switch II is for being connected to or disconnecting ignition coil.
Further, linkage is formed between the switch I and switch II；As shown, the switch I includes two stationary contacts
It is connect with the control circuit of fuel oil electrically-controlled valve with a movable contact DN2, wherein stationary contact N1, stationary contact N2 and combustion gas electrically-controlled valve
Control circuit connects, and movable contact DN1 optionally contacts electrical connection with stationary contact N1 and stationary contact N2；Switch II includes stationary contact
Point N3 and movable contact DN2, the stationary contact N3 are connected to the ignition coil of engine, and the movable contact DN2 is controlled by starting
Switch is electrically connected to flame-out port (ground connection)；It is movable contact DN2 and movable contact DN1 shapes that linkage is formed between switch I and switch II
At linkage structure；It includes contact point FS, contact point IG, contact point ST, contact point BA and contact point E, institute to start control switch
It states contact point FS to connect with movable contact DN1 as power supply output point, the contact point IG is as tie point and the movable contact DN2 of stopping working
Connection, contact point ST are connect with engine primer control circuit, and contact point BA is connect with power output end, and contact point E, which connects, to be put out
Fire end mouth (ground connection)；It is easily operated using the change-over switch and startup control switch, more simplification structure of above-mentioned contact structure
And cost is relatively low；It is relatively reasonable formation linkage, chain, with reach expected engine open and close and operational process in fired with double
The matching linkage effect of material, is conducive to the engine weight reduced and volume.
The invention also discloses a kind of engine with suitching type fuel system, the engine is using described
Suitching type fuel system.
The invention also discloses a kind of generating set, generating set is using described with suitching type fuel system
Engine.
Beneficial effects of the present invention：Suitching type fuel system, engine and the generating set of the present invention, using firing
The structure of electrically-controlled valve is set on oil and blast tube, and is controlled using change-over switch, engine is used for, it can be in engine
The switching of fuel is freely completed in the case of non-stop-machine, it is easy to use, avoid frequent start-stop during switching fuel from starting
Machine ensures the service life of engine；This system is applied not only to double fuel switching, it may also be used for multi fuel switches, and has preferable
Adaptability.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is circuit diagram of the present invention.
Specific implementation mode
Fig. 1 is schematic structural view of the invention, and Fig. 2 is circuit diagram of the present invention, as shown in the figure：The suitching type of the present embodiment
Fuel system includes combustion gas electrically-controlled valve 1 in 5 combustion gas input channel 2 of engine, is mounted on 5 fuel oil of engine
Fuel oil electrically-controlled valve 7 in input channel 12 and the conversion circuit for controlling combustion gas electrically-controlled valve 1 and the keying of fuel oil electrically-controlled valve 7；Combustion
Gas input channel 2 and fuel oil input channel 12 are communicated in carburetor 4, belong to existing structure；Using combustion gas electrically-controlled valve 1 and fuel oil
The mode of electrically-controlled valve 7 realizes the switching between double fuel, is quick on the draw, and switching is rapid, it is ensured that the supply of fuel, to ensure
Do not shut down realization switching；The present invention combustion gas electrically-controlled valve 1 and fuel oil electrically-controlled valve 7 be only refer to, not necessarily using fuel oil fire
Gas may also comprise between bio-fuel and combustion gas as raw material or constitute double fuel between fuel oil, details are not described herein；Conversion electricity
Road can be used general manual switch, motor switch or directly form control by ECU.
In the present embodiment, the conversion circuit is included at least for 11 selectivity of driving power to be accessed combustion gas electrically-controlled valve 1
Or the change-over switch 13 of fuel oil electrically-controlled valve 7；It is formed and is switched using change-over switch 13, simple in structure, cost is relatively low；Driving power 11
For combustion gas electrically-controlled valve 1 and the driving power of fuel oil electrically-controlled valve 7, accumulator is generally used, details are not described herein.
Further include the startup control switch 10 for controlling engine 5 and starting or stoping in the present embodiment, the startup control is opened
It closes 10 and driving power 11 is passed through into 13 selectivity access combustion gas electrically-controlled valve 1 of change-over switch or combustion when engine 5 is started and run
Oily electrically-controlled valve 7 cuts off driving power 11 when engine 5 stops, to close combustion gas electrically-controlled valve 1 and fuel oil electrically-controlled valve 7；Profit
The chain control formed to change-over switch is switched with control is started, between the keying and operation and change-over switch that ensure that engine
Association is formed, ensures the consistency that the switching of two kinds of fuel is opened and closed and run with engine, ensure that the normal operation of engine.
In the present embodiment, before the combustion gas electrically-controlled valve 1 is connected to the LPG pressure reducing valves 3 of engine gas input channel 2, profit
In the stationarity for the combustion gas for ensureing input engine.
In the present embodiment, the control switch 10 that starts passes through with the flame-out port 9 and startup control switch 10 being grounded
Change-over switch 13 is connected to the ignition coil of engine 5 and is opened when the fuel oil electrically-controlled valve 7 is connected the operation of engine 5 and need to be stopped
The flame-out port 9 of dynamic control switch 10 passes sequentially through startup control switch 10, change-over switch 13 is connected to ignition coil, starts control
Switch 10 cuts off driving power；When starting control switch 10 and being located at engine 5 and start and run state, starts and control switch 10 and break
Open flame-out port and driving power is connected to change-over switch 13 and by the selectivity of change-over switch 13 access combustion gas electrically-controlled valve or
Fuel oil electrically-controlled valve；Flame-out port 9 is typically grounded, for structure of stopping working；Existing touch can be used in above-mentioned startup control switch 10
Point switch realizes its function, i.e., will close, starts and runs and be integrated in same switch, and carry out selection use as needed,
Details are not described herein；Certainly, it can also be realized and be automatically controlled by ECU.
In the present embodiment, when the combustion gas electrically-controlled valve 1 is connected the operation of engine 5 and need to be stopped, starting control switch 10 and cut
Disconnected driving power, driving power is only disconnected by starting switch rather than to structure of stopping working combustion gas halt mode, can will fire
Gas electrically-controlled valve 1 is closed, and air inlet is disconnected, since electromagnetic coil is not connect with flame-out port, ignition coil continues to light a fire,
Engine will continue to the remaining fuel gas of after-flame, to ensure safety.
In the present embodiment, the combustion gas electrically-controlled valve 1 and fuel oil electrically-controlled valve 7 are normally closed solenoid valve, easily controllable, are had
Preferable sensitivity.
In the present embodiment, the change-over switch includes switch I and switch II, and the switch I accesses combustion gas for selectivity
Electrically-controlled valve or fuel oil electrically-controlled valve, switch II is for being connected to or disconnecting ignition coil.
In the present embodiment, linkage is formed between the switch I and switch II；As shown, the switch I includes two quiet
Contact and a movable contact DN2, wherein stationary contact N1 are connect with the control circuit of fuel oil electrically-controlled valve, and stationary contact N2 and combustion gas are automatically controlled
The control circuit of valve connects, and movable contact DN1 optionally contacts electrical connection with stationary contact N1 and stationary contact N2；Switch II includes
Stationary contact N3 and movable contact DN2, the stationary contact N3 are connected to the ignition coil of engine, and the movable contact DN2 passes through startup
Control switch is electrically connected to flame-out port (ground connection)；It is movable contact DN2 and movable contact that linkage is formed between switch I and switch II
DN1 forms linkage structure；It includes contact point FS, contact point IG, contact point ST, contact point BA and contact point to start control switch
E, the contact point FS are connect as power supply output point with movable contact DN1, and the contact point IG is touched as the tie point that stops working with dynamic
Point DN2 connections, contact point ST are connect with engine primer control circuit, and contact point BA is connect with power output end, contact point E
Connect flame-out port (ground connection)；
Above structure is when in use：
A, normal operation：When Fuel switching is combustion gas, movable contact DN1 is connected to stationary contact N2, movable contact DN2 and stationary contact
(vacant) connections of point N4, when being switched to fuel oil, movable contact DN1 and DN2 linkage, movable contact DN1 is connected to stationary contact N1, at this time
Movable contact DN2 is connected to stationary contact N3；
When b, needing to shut down：When fuel oil runs and need to shut down, the contact point IG for starting control switch is connected with contact point E,
Driving power is simultaneously switched off, fuel solenoid valve is closed, to form engine igniting coil, stationary contact N3, movable contact DN2, connect
The short circuit path of contact IG and contact point E keep ignition coil short-circuit, to close engine；Combustion gas runs and takes, and starts
Control switch disconnects driving power, closes gas electromagnetic valve, to which the residual combustion gases afterburnt closes engine in system；Start
Control switch can be controlled by controller, such as engine controller, automobile ECU etc., certainly, start control switch can also
By manually controlling, and it is existing structure to start control switch, and not in this to go forth；
C, when engine start：Contact point BA connect to form igniting access with contact point ST and contact point FS, to start
Engine, at this point, movable contact DN1 alternatives electrical connection contact stationary contact N1 or stationary contact N2.
Using above-mentioned contact structure change-over switch and start control switch, more simplification structure, it is easily operated and at
This is relatively low；It is relatively reasonable formation linkage, chain, with reach expected engine open and close and operational process in double fuel
Matching linkage effect, is conducive to the engine weight reduced and volume.
The invention also discloses a kind of engine with suitching type fuel system, the engine is using described
Suitching type fuel system.
The invention also discloses a kind of generating set, generating set is using described with suitching type fuel system
Engine
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (5)
1. a kind of suitching type fuel system, it is characterised in that：It include the combustion gas in engine gas input channel
Electrically-controlled valve, the fuel oil electrically-controlled valve in engine fuel input channel and for controlling combustion gas electrically-controlled valve and fuel oil electrically-controlled valve
The conversion circuit of keying；
The conversion circuit includes at least the conversion for driving power selectively to be accessed to combustion gas electrically-controlled valve or fuel oil electrically-controlled valve
Switch；
Further include controlling engine start or the startup control switch of stopping, the startup control switch is in engine start and fortune
Driving power will be driven by change-over switch selectively access combustion gas electrically-controlled valve or fuel oil electrically-controlled valve in engine stop when row
Dynamic dump；When the combustion gas electrically-controlled valve connects engine operation and needs to stop, starting control switch cutoff driving power；
The startup control switch is connected to engine with the flame-out port and startup control switch being grounded by change-over switch
Ignition coil start the flame-out port of control switch successively when the fuel oil electrically-controlled valve is connected engine operation and need to be stopped
By starting control switch, change-over switch is connected to ignition coil；When starting control switch positioned at engine start and operating status,
Start control to switch the flame-out port of disconnection and driving power is connected to change-over switch and is fired by change-over switch selectively access
Gas electrically-controlled valve or fuel oil electrically-controlled valve；
Before the combustion gas electrically-controlled valve is connected to the LPG pressure reducing valves of engine gas input channel.
2. suitching type fuel system according to claim 1, it is characterised in that：The change-over switch includes switch I
With switch II, the switch I accesses combustion gas electrically-controlled valve or fuel oil electrically-controlled valve for selectivity, and switch II is for connection or cut-off point
Firewire circle.
3. suitching type fuel system according to claim 2, it is characterised in that：Between the switch I and switch II
Form linkage；Combustion gas electrically-controlled valve and fuel oil electrically-controlled valve are normally closed solenoid valve.
4. a kind of engine with suitching type fuel system, it is characterised in that：The engine using claim 1 to
The suitching type fuel system of 3 any claims.
5. a kind of generating set, it is characterised in that：Generating set has suitching type fuel supply system using described in claim 4
The engine of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248981.6A CN104863730B (en) | 2015-05-15 | 2015-05-15 | Suitching type fuel system, engine and generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248981.6A CN104863730B (en) | 2015-05-15 | 2015-05-15 | Suitching type fuel system, engine and generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863730A CN104863730A (en) | 2015-08-26 |
| CN104863730B true CN104863730B (en) | 2018-07-27 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510248981.6A Active CN104863730B (en) | 2015-05-15 | 2015-05-15 | Suitching type fuel system, engine and generating set |
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| Country | Link |
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| CN (1) | CN104863730B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863884B (en) * | 2016-05-18 | 2018-07-03 | 浙江康思特动力机械有限公司 | A kind of decompression valve controling circuit and its control method |
| CN109681334B (en) * | 2018-11-02 | 2022-01-21 | 浙江吉利新能源商用车有限公司 | Control method and device for starting and stopping dual-fuel engine and vehicle |
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| CN101024406A (en) * | 2006-02-23 | 2007-08-29 | 罗达莱克斯阀门(上海)有限公司 | Fuel switching device and method for motorcycle or moped |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104863730A (en) | 2015-08-26 |
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