CN206495716U - A kind of gas engine multipoint injection system - Google Patents
A kind of gas engine multipoint injection system Download PDFInfo
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- CN206495716U CN206495716U CN201621364502.3U CN201621364502U CN206495716U CN 206495716 U CN206495716 U CN 206495716U CN 201621364502 U CN201621364502 U CN 201621364502U CN 206495716 U CN206495716 U CN 206495716U
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- 238000002347 injection Methods 0.000 title claims abstract description 84
- 239000007924 injection Substances 0.000 title claims abstract description 84
- 239000007789 gas Substances 0.000 claims abstract description 48
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003345 natural gas Substances 0.000 claims abstract description 21
- 239000000567 combustion gas Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 abstract description 18
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 description 41
- 238000009448 modified atmosphere packaging Methods 0.000 description 22
- 230000033228 biological regulation Effects 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
This application discloses a kind of gas engine multipoint injection system, including：Blast tube system and control system；Blast tube system includes：Natural gas tank, the gasifier being connected and the blast tube being connected with gasifier exit are exported with natural gas tank, and blast tube is provided with and the one-to-one injection valve of inlet manifold；Control system includes：ECU ECU and the attached sensors electrically connected with ECU ECU, attached sensors include：Crankshaft rotational speed sensor on crankshaft-flywheel, the top dead centre signal transducer on camshaft, and the single cylinder exhaust gas temperature sensor on each cylinder exhaust manifold；ECU ECU is electrically connected with each injection valve.Compared to existing technologies, the technical scheme that the application is provided takes into full account injection valve installation site, plays the factors such as spray time to discharging the influence with economic performance, engine is effectively ensured fuel economy and discharge performance are lifted under the conditions of even running.
Description
Technical field
The disclosure relates generally to technical field of engine control, and in particular to marine main controllable enters engine control technologies neck
Domain, more particularly to a kind of gas engine multipoint injection system.
Background technology
There is the phenomenon of " rich gas is oil-poor " in China's natural gas reserves relative abundance, energy resource supply, national develops rapidly,
Propose higher requirement to energy resource supply, and the exploitation of natural gas can Optimization of Energy Structure, effectively mitigate oil and disappear
Pressure is consumed, the energy safety of supply, the two fold problem of ecological environmental protection is solved.
In the current generation, the engine for high-volume using diesel oil as fuel is typically to be transform as double fuel to start
Machine, under conventional operating mode, is operated in diesel oil-natural gas pattern, uses portion of natural gas diesel oil substitute, reduce fuel cost；In day
Under the unstable operating mode of right gas source of the gas, pure diesel oil mode of operation is automatically switched back into, keeps power output constant, be that a comparison is applicable
Solution.Found through practice, inlet manifold's air inlet is used existing dual fuel engine, and gas easily occurs for such a intake method more
Door is overlapping, causes natural gas directly to be overflowed from exhaust valve, so as to cause the decline of engine emission and economic performance.
Multipoint sequential injection mode is current state-of-the-art mixture control mode, be can be achieved to each cylinder at regular time and quantity
Supply, can mitigate and eliminate causes discharge increase and combustion gas to waste due to the natural gas directly effusion that valve overlap is caused,
At the same time it can also more accurately control air inflow according to engine speed and load.But, the inlet manifold now used is more
Only natural gas is supplied at each cylinder inlet manifold by extensive style for point injection, and rare consideration injection valve installation site, a spray angle
The factors such as degree, spray angle are to discharging influence and the amendment of each cylinder combustibility difference with economic performance, it would be highly desirable to improve.
The content of the invention
In view of drawbacks described above of the prior art or deficiency, expect to provide a kind of gas engine multipoint injection system.
First aspect compared to existing technologies, can effectively ensure that engine in even running condition there is provided one kind
The gas engine multipoint injection system of lower lifting fuel economy and discharge performance.
A kind of gas engine multipoint injection system, including：Blast tube system and control system；The blast tube system
System includes：Natural gas tank, the gasifier being connected and the blast tube being connected with gasifier exit, the combustion are exported with natural gas tank
Gas passage is provided with and the one-to-one injection valve of inlet manifold；The control system includes：ECU ECU and with the electricity
The attached sensors of unit ECU electrical connections are controlled, the attached sensors include：Speed of crankshaft sensing on crankshaft-flywheel
Device, the top dead centre signal transducer on camshaft, and the single cylinder delivery temperature biography on each cylinder exhaust manifold
Sensor；The ECU ECU is electrically connected with each injection valve.
The technical scheme provided according to the embodiment of the present application：The attached sensors also include：Installed in injection pump rack
Throttle rack position sensor at pull bar.
The technical scheme provided according to the embodiment of the present application：The attached sensors also include：In inlet manifold
The boost-pressure sensor of cooler rear end.
The technical scheme provided according to the embodiment of the present application：The attached sensors also include：On exhaust main
Exhaust main temperature sensor.
The technical scheme provided according to the embodiment of the present application：The blast tube is provided with gas cut off valve.
The technical scheme provided according to the embodiment of the present application：The blast tube is provided with gaseous-pressure sensor.
The technical scheme provided according to the embodiment of the present application：Gas in the airflow direction and inlet manifold of the injection valve outlet
Flow direction contrary.
In summary, the improvement based on above-mentioned technical proposal, the ECU ECU of the application can utilize speed of crankshaft
Sensor and top dead centre signal transducer obtain speed of crankshaft signal and top dead centre signal.According to top dead centre signal of change X cylinders
Rise the spray time；Rotating speed-benchmark fuel gas injection amount MAP is searched further according to speed of crankshaft signal, benchmark under current rotating speed is obtained and fires
Gas jet amount, as drafting fuel gas injection amount；Meanwhile, the application has taken into full account that each cylinder burning of diesel engine is each caused by uneven
Cylinder row's temperature difference is different, and the delivery temperature of each cylinder is obtained using ECU ECU, judges whether to need for the abnormal cylinder of delivery temperature
The row's of progress temperature balance, if without the row's of progress temperature balance, ECU ECU controls X cylinders according to above-mentioned spray time and drafted
Fuel gas injection amount is sprayed；If need to be modified to benchmark fuel gas injection amount, the gas injection by row's temperature balance amendment is obtained
The amount of penetrating, ECU ECU controls X cylinders according to above-mentioned spray time and the fuel gas injection amount by row's temperature balance amendment is sprayed
Penetrate.
Based on the improvement of above-mentioned optimal technical scheme, the application is by setting up other attached sensors so that in the application
The economic performance and security performance of technical scheme operation are more prominent, compared to existing technologies, the technology that the application is provided
Scheme is it can be considered that influence and each cylinder flammability of the factor such as injection valve installation site, spray time to discharge with economic performance
Energy difference, can effectively ensure that engine lifts fuel economy and discharge performance under the conditions of even running.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation (embodiment one) of gas engine multipoint injection system in the application；
Fig. 2 is the structural representation (embodiment one) of gas engine multipoint injection system in the application.
In figure：1st, natural gas gas tank, 2, gasifier, 3, gas cut off valve, 4, gaseous-pressure sensor, 5, inlet manifold,
6th, inlet manifold, 7, injection valve, 8, single cylinder exhaust gas temperature sensor, 9, exhaust main, 10, exhaust main temperature sensor, 11,
Boost-pressure sensor, 12, charge air cooler, 13, crankshaft rotational speed sensor, 14, top dead center position sensor, 15, throttle rack position
Put sensor.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that, in order to
It is easy to illustrate only the part related to invention in description, accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment one：
Refer to and a kind of gas engine multipoint injection system is specifically disclosed in Fig. 1 and Fig. 2, the present embodiment, including：
Blast tube system and control system；The blast tube system includes：Natural gas tank 1, the gas being connected is exported with natural gas tank 1
Change device 2 and export the blast tube being connected with gasifier 2, the blast tube is provided with to be sprayed correspondingly with inlet manifold 6
Penetrate valve 7；The control system includes：ECU ECU and the attached sensors electrically connected with the ECU ECU, it is described
Attached sensors include：Crankshaft rotational speed sensor 13 on crankshaft-flywheel, the top dead centre signal on camshaft
Sensor 14, and the single cylinder exhaust gas temperature sensor 8 on each cylinder exhaust manifold；The ECU ECU and each spray
Penetrate valve electrical connection.
In the present embodiment, the blast tube system is as follows：
Natural gas tank 1, as the storage device of natural gas, for providing natural gas.
Gasifier 2, is connected with natural gas tank, the gasification for realizing liquified natural gas.
Blast tube, for by natural gas transmission to the inlet manifold of engine by gasification, its end also to be installed
Have with the one-to-one injection valve of inlet manifold, with realize gas spraying is incident upon inlet manifold under control of the control system
It is interior, realize multi-point injection.
In the present embodiment, the control system is as follows：
ECU ECU, the core control part of the application, it is electrically connected with all attached sensors in the system.
The attached sensors are specific as follows：
Crankshaft rotational speed sensor 13, on the fluted disc side of engine crankshaft flywheel, for measuring speed of crankshaft, with side
Just ECU ECU obtains speed of crankshaft in real time.
Top dead centre signal transducer 14, near camshaft, for measuring engine tope center signal, to facilitate electricity
Control unit ECU obtains top dead centre signal in real time.
In engine operation process, piston is lifted off position as top dead centre during crankshaft center ultimate range；By disk
Car determines that piston is in top dead center position in the intake stroke for the air inlet top dead centre of the 1st cylinder, i.e. the 1st cylinder.To stop in the 1st cylinder air inlet
On the basis of point, further according to the ECU ECU speeds of crankshaft obtained in real time and the ignition order of engine.Example：Using R6160 as
Example, its firing order is 1-5-3-6-2-4, can calculate every cylinder air inlet top dead centre.
When judging air inlet after top dead center, every cylinder exhaust valve closing time can be calculated according to the angle overlap of diesel engine
Point, determines fuel gas injection scope and plays spray angle degree, the spray time can be scaled by playing spray angle degree.
Example：By taking R6160 as an example, its exhaust valve closing time is 48 degree of air inlet after top dead center, it is contemplated that during the circulation of combustion gas
Between, show that 24 degree of spray angle Selection after top dead center is that the engine combustion effect is best according to experiment, discharge is preferably also, different
Model diesel engine may be different, it is necessary to be determined in actual tests.
Single cylinder exhaust gas temperature sensor 8, it is automatically controlled to facilitate for gathering single cylinder row's temperature at each cylinder exhaust manifold
Unit ECU normal acquisitions are with monitoring each cylinder delivery temperature.When ECU ECU collects single cylinder delivery temperature, it can obtain accordingly
To the average of each cylinder delivery temperature, it then can determine whether single cylinder with the difference of each cylinder delivery temperature average whether in prescribed limit.
In any preferred embodiment, the attached sensors also include：Oil at injection pump rack pull bar
Front tooth bar position sensor 15.Throttle rack position sensor, at injection pump rack pull bar, for judging that engine is worked as
Preload.Injection pump rack position represents a certain amount of distributive value, can judge current loads according to instantaneous oil consumption.When in prominent
Plus it is prominent when unloading operating mode, throttle rack position respective change can occur due to instantaneous oil changes, instantaneous oil consumption during impact operating mode
Can quickly it increase, instantaneous oil consumption when unloading operating mode of dashing forward can quickly reduce.
Certainly, in view of it is in dependency relation that marine main controllable, which enters the rotating speed of engine and load, rotating speed, which is sharply increased, may determine that
Impact operating mode, rotating speed, which is drastically reduced, may determine that and prominent unload operating mode.
In any preferred embodiment, the attached sensors also include：Installed in the rear end of 5 charge air cooler of inlet manifold 12
Boost-pressure sensor 11.In cold rear boost-pressure sensor, at engine intake manifold, installation site supercharging
After device and charge air cooler, for measuring boost pressure after charge air cooler, to facilitate ECU ECU to judge engine load.In it is cold
Pressure is boost pressure after device；Engine is under different operating modes, i.e., under different rotating speeds, and its boost pressure is different；Work as monitoring
When changing to boost pressure, it can be determined that engine load changes.
In any preferred embodiment, the attached sensors also include：Exhaust main on exhaust main 9
Temperature sensor 10.Exhaust main temperature sensor, on the exhaust main of engine, for gathering exhaust main temperature
Degree, judges whether delivery temperature is abnormal to facilitate row's temperature of ECU ECU combination single cylinders.It is automatically controlled if excessive discharge temperature
Unit ECU can control alarm module to start sound and light alarm.
In any preferred embodiment, the blast tube is provided with gas cut off valve.Gas cut off valve is being installed
On the basis of, if exhaust main temperature exceeds prescribed limits, control gas cut off valve is closed, and stops supply；If exhaust main
Temperature is failure to actuate without departing from prescribed limits, then gas cut off valve, normal supply.
In any preferred embodiment, the blast tube is provided with gaseous-pressure sensor 4.Gaseous-pressure is sensed
Device, on blast tube, for gathering fuel gas supply pressure in real time, is led to facilitating ECU ECU to gather combustion gas in real time
Gaseous-pressure signal on road, to facilitate ECU ECU to judge whether fuel gas supply pressure is normal；If gaseous-pressure signal is high
In prescribed limits, then gas cut off valve is failure to actuate, normal supply；If gaseous-pressure signal is less than prescribed limits, ECU ECU
Control gas cut off valve to close, stop supply.
In any preferred embodiment, the airflow direction and inlet manifold interior air-flow direction phase of the injection valve outlet
It is inverse, combustion gas and the mixing of air are realized in maximum efficiency.
Operation principle：
The fuel gas injection time can be converted to fuel gas injection amount, which determine above-mentioned gas engine multipoint injection system
Diesel oil substitution rate, and its power is directly proportional to rotating speed cube for ship main engine.
Whole diesel engine speed scope is divided into some sections, passes through the fuel gas injection in the range of experimental calibration every speed
Amount, MAP is set up by demarcation, then draws relevant parameter by linear interpolation, forms rotating speed and the MAP of fuel gas injection relation
Figure, i.e.,：Rotating speed-benchmark fuel gas injection amount MAP, carries out the fiducial time that linear interpolation draws every cylinder gas inlet.
Whole diesel engine speed scope is divided into some sections, passes through the reference oil front tooth in the range of experimental calibration every speed
Bar position, MAP is set up by demarcation, then draws relevant parameter by linear interpolation, is formed rotating speed and is closed with throttle rack position
The MAP of system, i.e.,：Rotating speed-reference oil door rack position MAP.
Whole diesel engine speed scope is divided into some sections, passes through the throttle rack position in the range of experimental calibration every speed
Pid parameter is put, MAP is set up by demarcation, then relevant parameter is drawn by linear interpolation, rotating speed and throttle rack position is formed
The MAP of pid parameter relation, i.e.,：Rotating speed-throttle rack position pid parameter MAP.
Whole diesel engine speed scope is divided into some sections, passes through the delivery temperature in the range of experimental calibration every speed
Pid parameter, MAP is set up by demarcation, then draws relevant parameter by linear interpolation, forms the MAP of delivery temperature pid parameter
Figure, i.e.,：Rotating speed-delivery temperature pid parameter MAP.
Whole diesel engine speed scope is divided into some sections, meanwhile, boost range is divided into some sections, passes through experiment
Each range of speeds and the fuel gas injection amount limit value in each boost range are demarcated, MAP is set up by demarcation, then by linear
Interpolation draws relevant parameter, forms the two-dimentional MAP of fuel gas injection amount limit value, i.e.,：Rotating speed-boost pressure-fuel gas injection amount limit
It is worth two dimension MAP.
According to theory analysis and rating test, obtain after above-mentioned all MAPs, its typing ECU ECU facilitates
ECU ECU is searched.
Based on above-mentioned design, the ECU ECU in the application gas engine multipoint injection system can utilize bent axle
Speed probe and top dead centre signal transducer obtain speed of crankshaft signal and top dead centre signal.According to top dead centre signal of change
A spray time for X cylinders；Rotating speed-benchmark fuel gas injection amount MAP is searched further according to speed of crankshaft signal, benchmark under current rotating speed is obtained
Fuel gas injection amount L.
ECU ECU obtains benchmark fuel gas injection amount L, as drafting fuel gas injection amount L1, meanwhile, ECU
ECU judges whether to need to start the warm balance module of row：ECU ECU gathers each cylinder delivery temperature TX(X=1,2 ... ..n), together
When calculate obtain each cylinder average exhaust T=∑s TX/ n (n=1,2 ...)；According to X cylinder delivery temperatures TXWith average exhaust temperature
Degree T obtains the two difference △ t.
If △ t are located in prescribed limit, ECU ECU directly obtains a spray time for X cylinders, and will draft combustion gas
Emitted dose L1It is used as final fuel gas injection amount LFinally, ECU ECU is by final fuel gas injection amount LFinallyIt is used as startup fuel gas injection
Measure LStart；Start the injection valve of X cylinders according to a spray time and start fuel gas injection amount LStartSprayed.
If △ t exceed prescribed limit, start the warm balance module of row, calculate the fuel gas injection amount by row's temperature balance amendment：
Rotating speed-delivery temperature pid parameter MAP ECU the ECU of being also stored with obtains delivery temperature under current rotating speed by searching
Pid parameter；ECU ECU carries out PID regulations according to delivery temperature pid parameter to △ t, calculates the warm balance fuel gas of the row of obtaining and repaiies
Positive quantity △ LRow's temperature, the fuel gas injection amount L by amendmentRow's temperature=L1+△LRow's temperature；ECU ECU directly obtains when playing spray of X cylinders
Between, and the fuel gas injection amount L that will be corrected by row's temperature balanceRow's temperatureIt is used as final fuel gas injection amount LFinally, ECU ECU will be final
Fuel gas injection amount LFinallyIt is used as startup fuel gas injection amount LStart；Start the injection valve of X cylinders according to a spray time and start gas injection
The amount of penetrating LStartSprayed.
Circulation performs above-mentioned steps, until engine completes to start.
Preferably, in the above-mentioned course of work, obtain after benchmark fuel gas injection amount, can also calculate by throttle rack position
Put the fuel gas injection amount of feedback modifiers：ECU ECU searches rotating speed-reference oil door rack position MAP and rotating speed-throttle rack
Position pid parameter MAP, obtains reference oil door rack position and the throttle rack position pid parameter under current rotating speed；ECU
ECU gathers the real-time throttle rack position under current rotating speed；ECU ECU is according to throttle rack position pid parameter to current
Difference under rotating speed between real-time throttle rack position and reference oil door rack position carries out PID regulations, and calculating obtains throttle tooth
Bar position combustion gas correction △ LThrottle, therefore draft fuel gas injection amount L1=L+ △ LThrottle.Afterwards, ECU ECU, which continues judgement, is
It is no to need to start the warm balance module of row, i.e., whether need to drafting fuel gas injection amount L1The temperature balance amendment of the row of progress.
Preferably, in the above-mentioned course of work, final fuel gas injection amount L is obtainedFinallyAfterwards, ECU ECU can also pass through
Current booster pressure signal and rotating speed are gathered, and searches rotating speed-boost pressure-fuel gas injection amount limit value two dimension MAP, obtains current
Rotating speed and the fuel gas injection amount limit value L under current booster pressurelim, by final fuel gas injection amount LFinallyWith fuel gas injection amount limit value
LlimIt is compared, takes smaller value as startup fuel gas injection amount LStart。
Preferably, ECU ECU can also gather the real-time parameter of all attached sensors, judge whether to be located at regulation
In the range of；If being respectively positioned in prescribed limit, S is directly performed1；If the real-time parameter of any attached sensors is beyond regulation model
Enclose, then ECU ECU controls alarm module to start.
Preferably, ECU ECU gathers exhaust main temperature signal in real time, if exhaust main temperature is limited higher than regulation
Value, then ECU ECU controls gas cut off valve closing.
Preferably, ECU ECU gathers detonation signal in real time, if knock value exceedes setting, ECU ECU is opened
Dynamic sound and light alarm and control gas cut off valve closing.
Preferably, the prescribed limit of the △ t is ± (5-10) DEG C.
Preferably, if | △ t | >=100 DEG C, ECU ECU control gas cut off valve close.
In summary, the technical scheme that the application is provided is it can be considered that the factor pair such as injection valve installation site, spray time
Influence and each cylinder combustibility difference of the discharge with economic performance, can effectively ensure that engine is carried under the conditions of even running
Rise fuel economy and discharge performance.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes formed by any combination.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical characteristic of energy carries out technical scheme formed by replacement mutually.
Claims (7)
1. a kind of gas engine multipoint injection system, it is characterised in that：Including：Blast tube system and control system；It is described
Blast tube system includes：Natural gas tank, the gasifier being connected and the combustion gas being connected with gasifier exit are exported with natural gas tank
Passage, the blast tube is provided with and the one-to-one injection valve of inlet manifold；
The control system includes：ECU ECU and the attached sensors electrically connected with the ECU ECU, it is described attached
Category sensor includes：Crankshaft rotational speed sensor on crankshaft-flywheel, the top dead centre sensing on camshaft
Device, and the single cylinder exhaust gas temperature sensor on each cylinder exhaust manifold；The ECU ECU is electrically connected with each injection valve
Connect.
2. a kind of gas engine multipoint injection system according to claim 1, it is characterised in that：The attached sensors
Also include：Throttle rack position sensor at injection pump rack pull bar.
3. a kind of gas engine multipoint injection system according to claim 1 or 2, it is characterised in that：The attached biography
Sensor also includes：Boost-pressure sensor installed in inlet manifold's charge air cooler rear end.
4. a kind of gas engine multipoint injection system according to claim 1 or 2, it is characterised in that：The attached biography
Sensor also includes：Exhaust main temperature sensor on exhaust main.
5. a kind of gas engine multipoint injection system according to claim 1 or 2, it is characterised in that：The combustion gas is led to
Road is provided with gas cut off valve.
6. a kind of gas engine multipoint injection system according to claim 5, it is characterised in that：On the blast tube
Provided with gaseous-pressure sensor.
7. a kind of gas engine multipoint injection system according to claim 1 or 2, it is characterised in that：The injection valve
The airflow direction of outlet and inlet manifold interior air-flow direction contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364502.3U CN206495716U (en) | 2016-12-13 | 2016-12-13 | A kind of gas engine multipoint injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364502.3U CN206495716U (en) | 2016-12-13 | 2016-12-13 | A kind of gas engine multipoint injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206495716U true CN206495716U (en) | 2017-09-15 |
Family
ID=59801315
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621364502.3U Expired - Fee Related CN206495716U (en) | 2016-12-13 | 2016-12-13 | A kind of gas engine multipoint injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438025A (en) * | 2016-12-13 | 2017-02-22 | 中国船舶重工集团公司第七研究所 | Gas engine multi-point injection system and control method thereof |
-
2016
- 2016-12-13 CN CN201621364502.3U patent/CN206495716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438025A (en) * | 2016-12-13 | 2017-02-22 | 中国船舶重工集团公司第七研究所 | Gas engine multi-point injection system and control method thereof |
| CN106438025B (en) * | 2016-12-13 | 2019-07-16 | 中国船舶重工集团公司第七一一研究所 | A kind of gas engine multipoint injection system and its control method |
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