CN102996269A - Fuel feeding control system of dimethyl ether and natural gas co-firing engine - Google Patents
Fuel feeding control system of dimethyl ether and natural gas co-firing engine Download PDFInfo
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- CN102996269A CN102996269A CN2012105206478A CN201210520647A CN102996269A CN 102996269 A CN102996269 A CN 102996269A CN 2012105206478 A CN2012105206478 A CN 2012105206478A CN 201210520647 A CN201210520647 A CN 201210520647A CN 102996269 A CN102996269 A CN 102996269A
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 133
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000000446 fuel Substances 0.000 title claims abstract description 44
- 239000003345 natural gas Substances 0.000 title claims abstract description 24
- 238000010344 co-firing Methods 0.000 title abstract 3
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 43
- 239000011435 rock Substances 0.000 claims description 29
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 230000006837 decompression Effects 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 7
- 239000000567 combustion gas Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002283 diesel fuel Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical group 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention relates to the field of mixed fuel control of engines, and in particular discloses a fuel feeding control system of a dimethyl ether and natural gas co-firing engine, which comprises an ECU (Electronic Control Unit), an engine and a plurality of oil injection valves, and also comprises a dimethyl ether feeding system and a natural gas feeding system which are communicated with an engine, wherein the dimethyl ether feeding system internally comprises a dimethyl ether storage tank and a flow sensor which are communicated with each other, one end of the flow sensor is in communication connection with the ECU, the other end of the flow sensor is respectively communicated with the oil injection valves; and the natural gas feeding system internally comprises a fuel storage tank, an electromagnetic valve, a flow control valve and a mixer which are communicated, the electromagnetic valve and the flow control valve are electrically connected with the ECU, one end of the mixer is communicated with air, and the other end of the mixer is communicated with the engine. By adopting a dimethyl ether and natural gas co-firing mode, the fuel feeding control system has the advantages of easily realizing the control mode, greatly lowering manufacture cost, and realizing that the engine operates economically and stably in an environmentally friendly manner when the compression ignition mode of the original engine can be kept.
Description
Technical field
The present invention relates to motor fuel combination control field, relate in particular to the fuel supply control system of a kind of dimethyl ether, rock gas (shale gas, coal-seam gas) mixing combustion engine.
Background technique
Compression ignition engine normal operation diesel oil acts as a fuel, because its thermal efficiency is high, is subject to people's great attention always.But harmful charcoal cigarette and the oxynitrides of its discharging are very high, and people take a lot of technical measures to reduce its discharging, all are difficult to simultaneously they be reduced.Dimethyl ether (DME) has very high cetane number as a kind of emerging clean alternative fuel, and without the C-C key, atomization is good in its structure of molecule, has good compressibility, therefore is fit to very much compression ignition engine.In addition its wide material sources, boiling point lower, can make motor have good cold starting performance, can not produce black smoke during burning, not sulfur-bearing, so dimethyl ether diesel oil substitute can reduce discharged nitrous oxides, realizing smokeless combustion, is the clean fuel of desirable compression ignition engine.
Rock gas is a kind of multi-component mixed gaseous fossil fuel, and main component is alkane, and wherein methane accounts for the overwhelming majority, and other has a small amount of ethane, propane and butane.Under normal pressure, when being cooled to approximately-162 ℃, then by the gaseous state liquefy, be called LNG Liquefied natural gas (LNG), calorific value is about 9200 kilocalories/m
3, it is present in oil field and gas field, coal seam, is one of safer combustion gas.
Because dimethyl ether on physicochemical property and the difference of diesel oil, so that there are problems in the direct dimethyl ether fuel of diesel engine, affects engine power performance and Economy.And in DME-Diesel Blended Fuel Engine, the lower calorific value of dimethyl ether adds that the substitution rate in system is not high, can only reach about 10%, need to do the oxygenation transformation at engine inlets, so that the thermal efficiency of DME-diesel motor and Economy are not high yet, the value of popularization is little.Existing diesel oil-natural gas double fuel engine then increases a cover diesel oil, rock gas dispensing control mechanism in diesel engine, although its to diesel engine change less, be easy to realize, but when rock gas enters motor in operation process, pushed the oxygen space, reduced flammability, rock gas, diesel oil have 10% the thermal efficiency to be wasted approximately.Moreover, existing diesel oil, natural gas double fuel engine are not high to the proportioning control accuracy between diesel oil and two kinds of fuel of rock gas, can not adapt to the requirement of various complex working conditions, so the power character of motor, fuel economy and exhaust emissions are difficult to the level that reaches higher.
Summary of the invention
The object of the invention is to, propose a kind of dimethyl ether rock gas mixing combustion engine fuel supply control system, it can under the compression-ignition mode that keeps former motor, realize motor economy, environmental protection, steady running.
For achieving the above object, the invention provides a kind of dimethyl ether rock gas mixing combustion engine fuel supply control system, it comprises: ECU, motor, and with respect to the motor setting and with a plurality of injection valves of ECU control connection, it also comprises dimethyl ether air supply system and the natural gas supply system that is communicated with respectively setting with motor, include in this dimethyl ether air supply system and be communicated with dimethyl ether storage tank and the flow transducer that arranges, this flow transducer one end and ECU communication connection, the flow transducer the other end is communicated with setting with a plurality of injection valves respectively; Include in the described natural gas supply system and be communicated with combustion gas storage tank, solenoid valve, flow control valve and the mixer that arranges, this solenoid valve and flow control valve all with the ECU electric connection, this mixer one end is connected with air, the mixer the other end is communicated with setting with motor; Described ECU is when motor moves, the frequency pulse width signal that the dimethyl ether flux signal at acquisition stream quantity sensor place or injection valve are opened, program and data through the ECU internal memory are carried out computing, processing, judgement, change the result of computing into control signal, and the output signal instruction, so that injection valve, solenoid valve and flow control valve are controlled.
Wherein, comprise also in the described dimethyl ether air supply system being communicated with the first filter cleaner and the suction booster that arranges that this first filter cleaner one end is communicated with setting with the dimethyl ether storage tank, suction booster one end is communicated with setting with flow transducer.
Also comprise a Decompression valves in the dimethyl ether air supply system of the present invention, this Decompression valves one end connection is arranged between the first filter cleaner and the suction booster, and the other end connection is arranged between suction booster and the flow transducer.
Further, also be communicated with between described flow transducer and a plurality of injection valves and be provided with a surge tank.
Among the present invention, described injection valve front end is provided with oil nozzle, and this oil nozzle tip is stretched into and is arranged in the motor.
Concrete, also be communicated with successively between the solenoid valve of described natural gas supply system and the flow control valve and be provided with decompressor and final cleaner, be provided with the first pressure transducer between this solenoid valve and the decompressor, be provided with the second pressure transducer between this decompressor and the final cleaner.
Moreover the mixer of described natural gas supply system is connected with air by a free-air diffuser, is provided with a turbosupercharger between this mixer and the free-air diffuser.
In addition, described motor one end is connected with air by an air outlet flue, is provided with successively exhaust gas temperature sensor and broad domain oxygen sensor between this motor and the air outlet flue, and this broad domain oxygen sensor all is connected with air by turbosupercharger with mixer.
Further, be provided with speed probe, cooling-water temperature sensor and crankshaft sensor in the described motor, described the first pressure transducer, the second pressure transducer, exhaust gas temperature sensor, broad domain oxygen sensor, speed probe, cooling-water temperature sensor and crankshaft sensor all communicate to connect with ECU.
Among the present invention, described ECU also communicates to connect with a throttle position switch.
Dimethyl ether rock gas mixing combustion engine fuel supply control system of the present invention, it is applied widely, can use at automobile-used, peculiar to vessel, diesel generating set etc. multi-field; It can be under the compression-ignition mode that keeps former motor, only increase by a tricks control gas supply system, supply the problem of hypoxia when not only having remedied combustion of natural gas, the not high problem of calorific value when having remedied again DME combustion, motor is improved to greatest extent in effect, Economy, greatly reduce manufacture cost; Simultaneously, its by to motor natural fuel consumption under various conditions carry out Real-Time Monitoring, accurately control as the control parameter with this fuel consumption, thereby guarantee that motor can realize all that in all cases dimethyl ether and rock gas supply with the accurate control of proportioning, the total consumption of fuel, control mode is easy to realize, finally reaches the purpose of stable engine power, raising fuel economy, reduction exhaust emissions.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of specific embodiment of dimethyl ether rock gas mixing combustion engine fuel supply control system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
As shown in Figure 1, the invention provides a kind of dimethyl ether rock gas mixing combustion engine fuel supply control system, it comprises: ECU10, motor 20, and with respect to motor 20 arrange and with a plurality of injection valves 31 of ECU10 control connection, it also comprises dimethyl ether air supply system and the natural gas supply system that is communicated with respectively setting with motor 20.The present invention can use at automobile-used, peculiar to vessel, diesel generating set etc. multi-field, it adopts dimethyl ether and the mixed combustion mode of natural gas double-fuel, in engine combustion process, carry 34.8% oxygen because of dimethyl ether, after entering motor 20 and rock gas mixing, mutually remedy, supply the problem of hypoxia when making dimethyl ether remedy combustion of natural gas, the not high problem of calorific value when rock gas has remedied DME combustion, mixed combustion is comparatively abundant, but presses present market price cut the cost of fuel cost more than 35% than full diesel oil operation.Simultaneously, because dimethyl ether without the C-C key, only has C-O and c h bond, and oxygen content is high, and therefore, the particulate that generates after the burning is little, start the function to bear higher exhaust cycle rate, thoroughly solved the contradiction that conventional diesel engine can not reduce particle and oxynitride discharge simultaneously.
Among the present invention, include the dimethyl ether storage tank 30(top that is communicated with setting in the described dimethyl ether air supply system and be gas phase, the below is liquid phase) and flow transducer 32, these flow transducer 32 1 ends and ECU10 communication connection, flow transducer 32 the other ends are communicated with setting with a plurality of injection valves 31 respectively; Include in the described natural gas supply system and be communicated with combustion gas storage tank 40, solenoid valve 41, flow control valve 42 and the mixer 43 that arranges, this solenoid valve 41 and flow control valve 42 all are electrically connected with ECU10.These mixer 43 1 ends are connected with air, and mixer 43 the other ends are communicated with setting with motor 20.Described ECU10 is the computing center of this control system, it is when motor 20 operation, dimethyl ether flux signal that can acquisition stream quantity sensor 32 places, perhaps gather the frequency pulse width signal that injection valve 31 is opened, program and data according to the ECU10 internal memory are carried out computing, processing, judgement, change the result of computing into control signal, and the output signal instruction, by injection valve 31, solenoid valve 41 and flow control valve 42 are controlled, finish the running of motor under power demand.
Wherein, comprise also in the described dimethyl ether air supply system being communicated with the first filter cleaner 33 and the suction booster 34 that arranges that these the first filter cleaner 33 1 ends are communicated with setting with dimethyl ether storage tank 30, suction booster 34 1 ends are communicated with setting with flow transducer 32.This first filter cleaner 33 can filtering will enter the objectionable impurities in the dimethyl ether in the motor 20, to reduce the premature wear of cylinder, piston, piston ring, valve and valve seat.Simultaneously, because the vapor pressure of solid dimethyl ether can raise with the rising of temperature, therefore need to install suction booster, and meet accident in order to prevent that equipment or manifold pressure are excessive, the present invention also is provided with a Decompression valves 35 in the dimethyl ether air supply system, this Decompression valves 35 1 ends connection is arranged between the first filter cleaner 33 and the suction booster 34, and the other end connection is arranged between suction booster 34 and the flow transducer 32.When equipment or manifold pressure surpass Decompression valves 35 setting pressure, namely automatically open pressure release, guarantee in the e-quipment and pipe pressure medium under setting pressure, the protection e-quipment and pipe.Moreover the present invention also is communicated with between described flow transducer 32 and a plurality of injection valves 31 and is provided with a surge tank 36, and the transient equiliblium of e-quipment and pipe internal pressure can be further guaranteed in the setting of this surge tank 36.
Among the present invention, described injection valve 31 front ends are provided with oil nozzle 21, and these oil nozzle 21 tips are stretched into and are arranged in the motor 20.In the specific embodiment of the invention, described injection valve 31 is 6 with the quantity of oil nozzle 21, and the setting of these a plurality of injection valves 31 and oil nozzle 21 can be under the isodose oil condition, can shorten the time of injection, the more time of fuel and air of being convenient to goes to mix; Simultaneously, many injection valves 31 and oil nozzle 21 can reach thinner mist of oil, are convenient to fuel and air and mix, and improve the quality of burning, guarantee the abundant and fuel-economizing of power.
Since the lubricity extreme difference of pure Dimethyl ether, after motor 20 moves a period of times, motor 20 serious wear.Therefore as a kind of selectivity embodiment of the present invention, can when 30 can of dimethyl ether storage tank, add a certain amount of lubricating additive, to improve the abrasion condition of motor.
Further, also be communicated with successively between the solenoid valve 41 of natural gas supply system and the flow control valve 42 among the present invention and be provided with decompressor 44 and final cleaner 45, be provided with the first pressure transducer 46 between this solenoid valve 41 and the decompressor 44, be provided with the second pressure transducer 47 between this decompressor 44 and the final cleaner 45.Wherein, this first pressure transducer 46 is a high pressure sensor, and it is used for carrying out Pressure testing through the high-pressure natural gas behind the solenoid valve 41; This second pressure transducer 47 is a low pressure sensor, and it is used for carrying out Pressure testing through decompressor 44 post-decompression low pressure natural gas.
Moreover the mixer 43 of natural gas supply of the present invention system is connected with air by a free-air diffuser 51, is provided with a turbosupercharger 48 between this mixer 43 and the free-air diffuser 51.In addition, described motor 20 1 ends are connected with air by an air outlet flue 52, be provided with successively exhaust gas temperature sensor 22 and broad domain oxygen sensor 23 between this motor 20 and the air outlet flue 52, this broad domain oxygen sensor 23 all is connected with air by turbosupercharger 48 with mixer 43.
Further, be provided with speed probe 24, cooling-water temperature sensor 25 and crankshaft sensor 26 in the described motor 20, described the first pressure transducer 46, the second pressure transducer 47, exhaust gas temperature sensor 22, broad domain oxygen sensor 23, speed probe 24, cooling-water temperature sensor 25 and crankshaft sensor 26 all communicate to connect with ECU10.As a kind of specific embodiment of the present invention, described ECU10 also communicates to connect with a throttle position switch 27.
Dimethyl ether rock gas mixing combustion engine fuel supply control system of the present invention is in concrete the application, dimethyl ether by dimethyl ether storage tank 30, the first filter cleaner 33, suction booster 34, Decompression valves 35, flow transducer 32, surge tank 36, injection valve 31, enters motor 20 through oil nozzle 21 successively.In this process, both can come the output signal to ECU10 by flow transducer 32, perhaps, can also be by the open frequency of injection valve 31, pulse width signal to the ECU10 output signal.Rock gas is then successively by combustion gas storage tank 30, solenoid valve 41, the first pressure transducer 46, decompressor 44, the second pressure transducer 47, final cleaner 45, flow control valve 42, mixed at free-air diffuser 51 and after turbosupercharger 48 with air by mixer 43, thereby enter motor 20.In above-mentioned working procedure, maximum difficulty is exactly motor 20 controls to dimethyl ether and the supply of rock gas proportioning in service.In the present invention, ECU10 is when motor 20 operation, the frequency pulse width signal that dimethyl ether flux signal that can acquisition stream quantity sensor 32 places or injection valve 31 are opened, so that injection valve 31, solenoid valve 41 and flow control valve 42 are controlled, control mode is easy to realize, and can guarantee that motor can realize all that in all cases dimethyl ether and rock gas supply with the accurate control of proportioning, the total consumption of fuel, finally reach stable engine power, improve fuel economy, reduce the purpose of exhaust emissions.In the specific embodiment of the invention, the frequency pulse width signal that described ECU10 can open by gathering dimethyl ether flux signal or injection valve 31, while is in conjunction with the throttle position signal at throttle position switch 27 places, the tach signal at speed probe 24 places, the oxygen sensor signal at broad domain oxygen sensor 23 places, the engine temperature signal at cooling-water temperature sensor 25 places, row's temperature signal at exhaust gas temperature sensor 22 places, the engine crankshaft signals at crankshaft sensor 26 places, the combustion gas high-voltage signal at the first pressure transducer 46 places, the second pressure transducer 47 Low Pressure Gas Network signals, utilize above-mentioned input signal to determine the information such as the fuel gas supply of motor 20 current working and air inflow, by basic data and data correction formula current each operating mode is loaded, rotating speed compares calculating, export correct command information control injection valve 31, solenoid valve 41 and flow control valve 42, thus control engine 20 has suitable gas flow to obtain the desirable target air-fuel ratio under each operating mode.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. dimethyl ether rock gas mixing combustion engine fuel supply control system, comprise ECU, motor, and with respect to the motor setting and with a plurality of injection valves of ECU control connection, it is characterized in that, also comprise and be communicated with respectively dimethyl ether air supply system and the natural gas supply system that arranges with motor, include in this dimethyl ether air supply system and be communicated with dimethyl ether storage tank and the flow transducer that arranges, this flow transducer one end and ECU communication connection, the flow transducer the other end is communicated with setting with a plurality of injection valves respectively; Include in the described natural gas supply system and be communicated with combustion gas storage tank, solenoid valve, flow control valve and the mixer that arranges, this solenoid valve and flow control valve all with the ECU electric connection, this mixer one end is connected with air, the mixer the other end is communicated with setting with motor; Described ECU is when motor moves, the frequency pulse width signal that the dimethyl ether flux signal at acquisition stream quantity sensor place or injection valve are opened, program and data through the ECU internal memory are carried out computing, processing, judgement, change the result of computing into control signal, and the output signal instruction, so that injection valve, solenoid valve and flow control valve are controlled.
2. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 1, it is characterized in that, also comprise in the described dimethyl ether air supply system and be communicated with the first filter cleaner and the suction booster that arranges, this the first filter cleaner one end is communicated with setting with the dimethyl ether storage tank, and suction booster one end is communicated with setting with flow transducer.
3. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 2, it is characterized in that, also comprise a Decompression valves in the described dimethyl ether air supply system, this Decompression valves one end connection is arranged between the first filter cleaner and the suction booster, and the other end connection is arranged between suction booster and the flow transducer.
4. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 3 is characterized in that, also is communicated with between described flow transducer and a plurality of injection valves to be provided with a surge tank.
5. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 4 is characterized in that described injection valve front end is provided with oil nozzle, and this oil nozzle tip is stretched into and is arranged in the motor.
6. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 1, it is characterized in that, also be communicated with successively between the solenoid valve of described natural gas supply system and the flow control valve and be provided with decompressor and final cleaner, be provided with the first pressure transducer between this solenoid valve and the decompressor, be provided with the second pressure transducer between this decompressor and the final cleaner.
7. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 6, it is characterized in that, the mixer of described natural gas supply system is connected with air by a free-air diffuser, is provided with a turbosupercharger between this mixer and the free-air diffuser.
8. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 7, it is characterized in that, described motor one end is connected with air by an air outlet flue, be provided with successively exhaust gas temperature sensor and broad domain oxygen sensor between this motor and the air outlet flue, this broad domain oxygen sensor all is connected with air by turbosupercharger with mixer.
9. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 8, it is characterized in that, be provided with speed probe, cooling-water temperature sensor and crankshaft sensor in the described motor, described the first pressure transducer, the second pressure transducer, exhaust gas temperature sensor, broad domain oxygen sensor, speed probe, cooling-water temperature sensor and crankshaft sensor all communicate to connect with ECU.
10. dimethyl ether rock gas mixing combustion engine fuel supply control system as claimed in claim 9 is characterized in that, described ECU also communicates to connect with a throttle position switch.
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| CN2012105206478A CN102996269A (en) | 2012-12-07 | 2012-12-07 | Fuel feeding control system of dimethyl ether and natural gas co-firing engine |
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| CN115523026A (en) * | 2022-09-22 | 2022-12-27 | 哈尔滨工程大学 | A device and method for improving natural gas engine misfire |
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| CN115523026A (en) * | 2022-09-22 | 2022-12-27 | 哈尔滨工程大学 | A device and method for improving natural gas engine misfire |
| CN115523026B (en) * | 2022-09-22 | 2025-03-25 | 哈尔滨工程大学 | Device and method for improving misfire of natural gas engine |
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