CN118391148A - Ignition chamber type engine and control method thereof - Google Patents
Ignition chamber type engine and control method thereof Download PDFInfo
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- CN118391148A CN118391148A CN202410455188.2A CN202410455188A CN118391148A CN 118391148 A CN118391148 A CN 118391148A CN 202410455188 A CN202410455188 A CN 202410455188A CN 118391148 A CN118391148 A CN 118391148A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 138
- 239000007789 gas Substances 0.000 claims abstract description 124
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 80
- 239000001257 hydrogen Substances 0.000 claims abstract description 80
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 238000005336 cracking Methods 0.000 claims abstract description 55
- 230000001105 regulatory effect Effects 0.000 claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 29
- 239000002828 fuel tank Substances 0.000 claims abstract description 28
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000002309 gasification Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 5
- 238000000197 pyrolysis Methods 0.000 abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 229910052799 carbon Inorganic materials 0.000 description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 238000004891 communication Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention relates to an ignition chamber type engine and a control method thereof, belonging to the technical field of internal combustion engines. The cracking heater is provided with a heating spark plug, a heating injector, an air valve and a heating spray hole, the cylinder is provided with an ignition chamber, an air inlet passage and an air exhaust passage, the exhaust regulating valve is arranged on the air exhaust passage, the exhaust regulating valve and the cracking heater are communicated with the fuel cracker, a fuel gasification device is arranged between the fuel tank and the fuel cracker, a separator is arranged between the fuel cracker and a hydrogen storage tank, the separator separates hydrogen and other gases, the separator and the hydrogen storage tank are respectively communicated with the mixed gas injector, the fuel tank is also connected with the air inlet injector and the heating injector, and the hydrogen storage tank is connected with the ignition injector. By arranging the ignition chamber, the ignition energy is improved, and the lean combustion is realized; through setting up exhaust regulating valve and schizolysis heater, the fuel pyrolysis efficiency under the different operating modes is effectively controlled to reach the purpose of high-efficient clean burning.
Description
Technical Field
The invention relates to an ignition chamber type engine and a control method thereof, belonging to the technical field of internal combustion engines.
Background
In recent years, new low-carbon and zero-carbon fuels are becoming the main direction of the development of internal combustion engines, and in this context, the combustion and emission control technologies for low-carbon and zero-carbon combustion engines are becoming hot spots, and at present, typical low-carbon and zero-carbon fuels include methanol, ammonia and the like, but at the same time, problems such as slow combustion speed and difficult cold start exist. The ignition chamber has high ignition energy, is mostly applied to a lean-burn engine, and can effectively improve the thermal efficiency of the engine. The spark plug ignites a slightly rich mixture in the ignition chamber suitable for ignition and flame propagation, and the rich mixture in the ignition chamber burns rapidly, so that a short-time high pressure difference and a short-time temperature difference are formed between the ignition chamber and the main combustion chamber. At this time, flame in the ignition chamber can be quickly injected into the main combustion chamber through the small holes connected with the main combustion chamber through the pre-combustion chamber due to the pressure difference effect, so as to ignite the mixed gas in the main combustion chamber, and many researches are carried out on the ignition chamber system at home and abroad. After cracking, the hydrogen-containing fuel such as methanol, ammonia and the like contains hydrogen, carbon monoxide and a small amount of gas fuel, and the cracking gas is introduced into an engine cylinder or an ignition chamber, so that lean and rapid combustion can be realized, and the engine efficiency is further improved. However, the low-carbon fuel cracker needs to obtain higher cracking efficiency at high temperature, and in the field of automotive application, high-temperature tail gas is usually used as a main heating mode and electric heating is usually used as an auxiliary heating mode when an automobile runs. During cold start, due to insufficient temperature of automobile exhaust, the problems of too slow heating, large energy consumption and overlong cold start time exist, and how to increase the temperature of the fuel cracker and further improve the cracking efficiency becomes a key for solving the problems.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides an ignition chamber type engine and a control method thereof, wherein ignition energy is improved by arranging an ignition chamber, and lean combustion is realized; the exhaust regulating valve and the cracking heater are arranged, the flow of tail gas entering the fuel cracker is dynamically regulated, and when the temperature of the tail gas is low, the fuel cracker is heated by adopting high-temperature gas burnt by the cracking heater, so that the fuel cracking efficiency under different working conditions is effectively controlled; according to the running condition of the engine and the type of the fuel, different fuel types are selected, so that the high-flexibility fuel is realized, the quick ignition and stable combustion of the low-carbon/zero-carbon fuel engine are realized, and the aim of high-efficiency clean combustion is fulfilled.
The technical scheme adopted by the invention is that the ignition chamber type engine comprises an air cylinder, an exhaust regulating valve, a cracking heater, a fuel cracker, a hydrogen storage tank, an air storage tank and a fuel tank; the cracking heater is provided with a heating spark plug, a heating injector, an air valve and a heating spray hole, the cylinder is provided with an ignition chamber, an air inlet passage and an exhaust passage, the ignition chamber is provided with an ignition spray hole, the ignition spark plug and the ignition injector, the air inlet passage is provided with an air inlet injector and/or a mixed gas injector, the exhaust regulating valve is arranged on the exhaust passage and is communicated with the fuel cracker through a pipeline, the heating spray hole of the cracking heater is communicated with the pipeline, the air storage tank is communicated with the cracking heater through the air valve, a fuel gasification device is arranged between the fuel tank and the fuel cracker, a separator is arranged between the fuel cracker and the hydrogen storage tank, a hydrogen-containing gas outlet of the separator is connected with the hydrogen storage tank, other gas outlets of the separator and the hydrogen storage tank are respectively communicated with the mixed gas injector, the fuel tank is also connected with the air inlet injector and the heating injector, and the hydrogen storage tank is connected with the ignition injector.
Further, the fuel cracker is divided into an inner shell and an outer shell, a cavity of the inner shell is a reaction zone, a cavity between the inner shell and the outer shell is a heating zone, two ends of the outer shell are respectively provided with a tail gas inlet and a tail gas outlet, the tail gas inlet is communicated with a pipeline, two ends of the inner shell are respectively provided with a fuel inlet and a fuel outlet, the fuel gasification device is communicated with the fuel inlet, and the fuel outlet is communicated with a separation inlet of the separator.
Further, the exhaust regulating valve comprises a valve body, a first valve core, a second valve core, a third valve core and a driving shaft, wherein the first valve core, the second valve core and the third valve core are arranged in the valve body at intervals to form an air inlet, an air outlet and a cracking heating port, the air inlet, the air outlet and the cracking heating port are communicated with each other, the driving shaft is fixedly connected with the first valve core, the second valve core and the third valve core, the air inlet is communicated with the exhaust passage, the cracking heating port is connected with the fuel cracker through a pipeline, and when the communication area of the cracking heating port and the pipeline is enlarged, the communication area of the air outlet is reduced; when the communication area between the cracking heating port and the pipeline is reduced, the communication area of the exhaust port is increased.
Further, a mixed gas pressure regulating device is arranged between the separator and the mixed gas injector, and the hydrogen storage tank is connected with the mixed gas injector after passing through the mixed gas pressure regulating device.
Further, a hydrogen pressure regulating device is arranged between the hydrogen storage tank and the ignition injector.
Further, the cylinder is also provided with an in-cylinder direct injection injector, and the fuel tank is connected with the in-cylinder direct injection injector.
Further, a direct injection fuel supply pump is arranged between the fuel tank and the in-cylinder direct injection injector.
Further, the main fuel tank is filled with low-carbon hydrogen-containing fuel such as methanol, ammonia and the like.
Further, an air pressure adjusting device is arranged between the air storage tank and the air valve.
The invention also provides a control method of the dual-fuel engine, in particular to a control method of the dual-fuel engine, when the engine is started or operated under low load, the air inlet injector sprays fuel in the fuel tank into the air inlet channel and/or the gas separated by the separator is sprayed into the air inlet channel by the mixed gas injector, the gas in the hydrogen storage tank is sprayed into the ignition chamber by the ignition injector, the ignition spark plug ignites the combustible gas, the flame is sprayed into the engine cylinder through the ignition spray hole, and the combustion of the fuel in the cylinder is triggered; the driving shaft of the exhaust regulating valve is controlled to rotate so as to enlarge the flow area among the air inlet, the cracking heating port and the pipeline, reduce the flow area of the air outlet or close the air outlet, meanwhile, an air valve is opened, an air storage tank sprays air into the cracking heater, a heating injector sprays fuel in the fuel tank into the cracking heater, the air is ignited by a heating spark plug, and high-temperature and high-pressure air after combustion is sprayed into a heating area of the fuel cracker through a heating spray hole to heat a reaction area of the fuel cracker; the fuel gasified by the fuel gasification device enters a reaction zone of the fuel cracker through a fuel inlet, the reacted hydrogen-containing gas is stored in a hydrogen storage tank, and other gases separated by the separator are sprayed into an air inlet channel by means of a mixed gas injector;
When the engine is in a high-load operation condition, the fuel in the fuel tank is injected into the air inlet passage by the air inlet injector and/or the gas separated by the separator is injected into the air inlet passage by the mixed gas injector, the gas in the hydrogen storage tank is injected into the ignition chamber by the ignition injector, the ignition spark plug ignites the combustible gas, and the flame is injected into the engine cylinder through the ignition spray hole to trigger the combustion of the fuel in the cylinder; the driving shaft of the exhaust regulating valve is controlled to rotate so as to reduce the flow area among the air inlet, the cracking heating port and the pipeline, meanwhile, the flow area of the exhaust port is increased, the air valve and the heating injector are closed, and the reaction area of the fuel cracker is heated through the tail gas in the exhaust passage; the fuel gasified by the fuel gasification device enters the reaction zone of the fuel cracker through the fuel inlet, the reacted hydrogen-containing gas is stored in the hydrogen storage tank, and other gases separated by the separator are sprayed into the air inlet channel by means of the mixed gas injector.
Compared with the prior art, the ignition chamber type engine has the beneficial effects that the exhaust regulating valve and the cracking heater are arranged between the exhaust passage and the fuel cracker, and the tail gas flow of the engine and the temperature of the reaction zone of the fuel cracker are regulated according to different working conditions, so that the fuel cracking efficiency under different working conditions is effectively controlled; the ignition chamber is arranged, the ignition energy is improved, and the ignition stability of the engine is further improved by introducing pyrolysis gas, so that the lean combustion limit is effectively expanded, and the effect of improving the thermal efficiency of the engine is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic illustration of an ignition chamber engine;
FIG. 2 is a schematic cross-sectional view of an exhaust gas control valve;
fig. 3 is a partial schematic view of fig. 1.
The figure shows:
1. An intake air injector; 2. an air inlet channel; 3. an ignition spark plug; 4. an ignition chamber; 5. an ignition injector; 6. in-cylinder direct injection injectors; 7. a direct injection feed pump; 8. an exhaust passage; 9. an exhaust gas regulating valve; 10. a fuel gasification device; 11. heating the spark plug; 12. heating the injector; 13. an air valve; 14. a pyrolysis heater; 15. a fuel cracker; 16. a separator; 17. a hydrogen storage tank; 18. an air storage tank; 19. a hydrogen pressure regulating device; 20. a fuel tank; 21. a mixed gas pressure regulating device; 22. a gas mixture injector; 23. a pipeline; 24. a cylinder; 25. igniting the spray holes; 91. an air inlet; 92. an exhaust port; 93. a cracking heating port; 94. a valve body; 95. a drive shaft; 96. a first valve core; 97. a second valve core; 98. a third valve core; 141. heating the spray holes; 151. a tail gas inlet; 152. a tail gas outlet; 153. a fuel inlet; 154. a fuel outlet; 155. a reaction zone; 156. a heating zone; 161. a separation inlet; 162. a hydrogen-containing gas outlet; 163. other gas outlets.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to further understand the present invention, the following description will further explain the present invention in conjunction with the specific embodiments.
Example 1:
As shown in fig. 1 to 3, the present embodiment provides an ignition chamber engine including a cylinder 24, an exhaust gas regulating valve 9, a cracking heater 14, a fuel cracker 15, a hydrogen storage tank 17, an air storage tank 18, a fuel tank 20; the cracking heater 14 is provided with a heating spark plug 11, a heating injector 12, an air valve 13 and a heating spray hole 141, the cylinder 24 is provided with an ignition chamber 4, an air inlet passage 2 and an air outlet passage 8, the ignition chamber 4 is provided with an ignition spray hole 25, an ignition spark plug 3 and an ignition injector 5, and the ignition injector 5 sprays pure hydrogen or hydrogen-containing mixture into the cylinder 24; an air inlet injector 1 and/or a gas mixture injector 22 are arranged on the air inlet channel 2, and different injection modes are selected according to the type of engine fuel and the operation condition; the exhaust gas regulating valve 9 is arranged on the exhaust passage 8, the exhaust gas regulating valve 9 is communicated with the fuel cracker 15 through a pipeline 23, specifically, the exhaust gas regulating valve 9 comprises a valve body 94, a first valve core 96, a second valve core 97, a third valve core 98 and a driving shaft 95, the first valve core 96, the second valve core 97 and the third valve core 98 are arranged in the valve body 94 at intervals, an air inlet 91 is formed between the first valve core 96 and the second valve core 97, an air outlet 92 is formed between the second valve core 97 and the third valve core 98, a cracking heating port 93 is formed between the first valve core 96 and the third valve core 98, the air inlet 91, the air outlet 92 and the inside of the cracking heating port 93 are communicated, the driving shaft 95 is fixedly connected with the first valve core 96, the second valve core 97 and the third valve core 98, the air inlet 91 is communicated with the exhaust passage 8, and the cracking heating port 93 is connected with the fuel cracker 15 through the pipeline 23;
Specifically, the fuel cracker 15 is divided into an inner shell and an outer shell, a cavity of the inner shell is a reaction zone 155, a cavity between the inner shell and the outer shell is a heating zone 156, two ends of the outer shell are respectively provided with a tail gas inlet 151 and a tail gas outlet 152, and the tail gas inlet 151 is communicated with the pipeline 23; at both ends of the inner housing are a fuel inlet 153 and a fuel outlet 154, respectively, the fuel gasification device 10 communicates with the fuel inlet 153, and the fuel outlet 154 communicates with the separation inlet 161 of the separator 16. The heating spray hole 141 of the cracking heater 14 is communicated with the pipeline 23, the air storage tank 18 is communicated with the cracking heater 14 through the air valve 13, and an air pressure regulating device is arranged between the air storage tank 18 and the air valve 13. One end of the fuel tank 20 is connected with the fuel gasification device 10, the other end of the fuel gasification device 10 is connected with the fuel cracker 15, a separator 16 is arranged between the fuel cracker 15 and the hydrogen storage tank 17, a hydrogen-containing gas outlet 162 of the separator 16 is connected with the hydrogen storage tank 17, other gas outlets 163 of the separator 16 are communicated with the gas mixture injector 22 or alternatively, a gas mixture pressure regulating device 21 is arranged between the other gas outlets 163 of the separator 16 and the gas mixture injector 22, the hydrogen storage tank 17 is communicated with the gas mixture injector 22 or alternatively, the hydrogen storage tank 17 is connected with the gas mixture injector 22 after passing through the gas mixture pressure regulating device 21, the fuel tank 20 is also connected with the air inlet injector 1 and the heating injector 12, the hydrogen storage tank 17 is connected with the ignition injector 5 or a hydrogen pressure regulating device 19 is also arranged between the hydrogen storage tank 17 and the ignition injector 5.
The main fuel tank 20 is filled with a low-carbon hydrogen-containing fuel such as methanol and ammonia.
The embodiment also provides a control method of the dual-fuel engine, specifically, when the engine is started or operated under low load, the air inlet injector 1 injects fuel in the fuel tank 20 into the air inlet channel 2, the mixed gas injector 22 injects pure hydrogen or hydrogen-containing mixed gas or other gases except hydrogen into the air inlet channel 2, the ignition injector 5 injects gas in the hydrogen storage tank 17 into the ignition chamber 4, the ignition spark plug 3 ignites the combustible gas, and flame is injected into the engine cylinder 24 through the ignition jet orifice 25 to trigger the combustion of the in-cylinder fuel; when the engine is started or operated under low load, the temperature of the tail gas of the engine is low, the high-efficiency working temperature of the fuel cracker 15 cannot be met, the driving shaft 95 is connected with the stepping motor, the rotation angle of the driving shaft 95 is controlled by the stepping motor, and the driving shaft 95 rotates to drive the first valve core 96, the second valve core 97 and the third valve core 98 to rotate along with the rotation angle, so that the flow area among the air inlet 91, the cracking heating port 93 and the pipeline 23 is enlarged, the flow area of the air outlet 92 is reduced, or the air outlet 92 is closed, and particularly, when the stepping motor drives the driving shaft 95 to rotate leftwards, the flow area of the air inlet 91 and the air outlet 92 is reduced, and the flow area of the air inlet 91 and the cracking heating port 93 is increased. At the same time, the air valve 13 is opened, the air storage tank 18 sprays air into the cracking heater 14, the heating injector 12 sprays fuel into the fuel tank 20 into the cracking heater 14, the air is ignited by the heating spark plug 11, and the air with high temperature and high pressure after combustion is sprayed into the heating zone 156 of the fuel cracker 15 through the heating spray hole 141 to heat the reaction zone 155 of the fuel cracker 15; the fuel gasified by the fuel gasification device 10 enters a reaction zone 155 of the fuel cracker 15 through a fuel inlet 153, the reacted hydrogen-containing gas is stored in a hydrogen storage tank 17, and other gases separated by a separator 16 except hydrogen are sprayed into the air inlet channel 2 by a mixed gas injector 22;
During the high-load operation condition of the engine, the fuel in the fuel tank 20 is injected into the air inlet passage 2 by the air inlet injector 1, pure hydrogen or hydrogen-containing mixed gas or other gases except hydrogen are injected into the air inlet passage 2 by the mixed gas injector 22, the gas in the hydrogen storage tank 17 is injected into the ignition chamber 4 by the ignition injector 5, the ignition spark plug 3 ignites combustible gas, flame is injected into the engine cylinder 24 through the ignition jet orifice 25, and the combustion of the in-cylinder fuel is triggered; when the engine is operated under high load, the temperature of the engine exhaust is high, the flow area among the air inlet 91, the cracking heating port 93 and the pipeline 23 is reduced by controlling the rotation of the driving shaft 95 of the exhaust regulating valve 9, and meanwhile, the flow area of the air outlet 92 is increased, specifically, when the stepping motor drives the driving shaft 95 to rotate rightwards, the communication area between the air inlet 91 and the air outlet 92 is increased, and the communication area between the air inlet 91 and the cracking heating port 93 is reduced. Closing the air valve 13 and the heating injector 12, and heating the reaction zone 155 of the fuel cracker 15 by the exhaust gas in the exhaust passage 8; the fuel gasified by the fuel gasification device 10 enters the reaction zone 155 of the fuel cracker 15 through the fuel inlet 153, the reacted hydrogen-containing gas is stored in the hydrogen storage tank 17, and the other gases separated by the separator 16 except hydrogen are injected into the air inlet channel 2 by the mixed gas injector 22.
The air valve 13 of the cracking heater 14 sprays high-pressure air into the cracking heater 14, the heating injector 12 sprays fuel, or pure hydrogen or hydrogen-containing mixed gas in the hydrogen storage tank 17, the heating spark plug 11 ignites the mixed gas, the high-temperature mixed gas after combustion enters from the tail gas inlet 151 of the fuel cracker 15 and passes through the heating zone 156 of the fuel cracker 15 after being sprayed out through the heating spray hole 141, the reaction zone 155 of the fuel cracker 15 is heated in the circulation process, and finally the mixed gas is discharged from the tail gas outlet 152 of the fuel cracker 15.
The fuel gasification device 10 adopts an electric heating or tail gas heating mode, the fuel after gasification heating enters a fuel inlet 153 of a fuel cracker 15 in a gaseous form and passes through a reaction zone 155 of the fuel cracker 15, the cracked hydrogen-containing mixed gas enters a separation inlet 161 of a separator 16 through a fuel outlet 154 of the fuel cracker 15, the separator 16 separates the entering gas and is divided into hydrogen-containing mixed gas or pure hydrogen and other gases except hydrogen, and the hydrogen-containing mixed gas or the pure hydrogen is directly stored in a hydrogen storage tank 17; the hydrogen-containing mixed gas or pure hydrogen can also be injected into the air inlet channel 2 through the mixed gas pressure regulating device 21 and the mixed gas injector 22.
By arranging the exhaust regulating valve 9 and the cracking heater 14 between the exhaust passage 8 and the fuel cracker 15, according to different working conditions of engine operation, the tail gas flow of the engine is regulated, and the temperature of the reaction area 155 of the fuel cracker 15 is controlled by the cracking heater 14, so that the fuel cracker 15 is ensured to always work in a high-efficiency cracking temperature range, the fuel cracking efficiency under different working conditions is further effectively controlled, the problems of difficult cold start and poor ignition stability of low-carbon/zero-carbon fuels such as methanol and ammonia are solved, and high-efficiency clean combustion is realized.
Example 2:
As shown in fig. 1 to 3, unlike in embodiment 1, the cylinder 24 is further provided with an in-cylinder direct injection injector 6, and the fuel tank 20 is connected to the in-cylinder direct injection injector 6 via a direct injection fuel feed pump 7. During the engine starting working condition or the low-load operation working condition, the direct in-cylinder injection injector 6 is added to inject fuel into the cylinder 24, so that the engine combustion modes under different working conditions are further optimized.
Example 3:
As shown in fig. 1 to 3, unlike embodiment 1 and embodiment 2, the intake port 2 is not provided with the intake injector 1, and fuel is injected into the cylinder 24 by the in-cylinder direct injector 6 during the engine start-up condition or the low load operation condition.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. An ignition chamber engine is characterized by comprising a cylinder (24), an exhaust gas regulating valve (9), a cracking heater (14), a fuel cracker (15), a hydrogen storage tank (17), an air storage tank (18) and a fuel tank (20); wherein the cracking heater (14) is provided with a heating spark plug (11), a heating injector (12), an air valve (13) and a heating spray hole (141), the cylinder (24) is provided with an ignition chamber (4), an air inlet passage (2) and an exhaust passage (8), the ignition chamber (4) is provided with an ignition spray hole (25), an ignition spark plug (3) and an ignition injector (5), the air inlet passage (2) is provided with an air inlet injector (1) and/or a mixed gas injector (22), the exhaust regulating valve (9) is arranged on the exhaust passage (8), the exhaust regulating valve (9) is communicated with the fuel cracker (15) through a pipeline (23), the heating spray hole (141) of the cracking heater (14) is communicated with the pipeline (23), the air storage tank (18) is communicated with the cracking heater (14) through the air valve (13), a fuel gasification device (10) is arranged between the fuel tank (20) and the fuel cracker (15), a separator (16) is arranged between the fuel cracker (15) and the hydrogen storage tank (17), a hydrogen-containing gas outlet (162) of the separator (16) is connected with the hydrogen storage tank (17), the hydrogen-containing gas outlet (17) of the separator (16) is communicated with the other hydrogen storage tank (17), the hydrogen outlet (17) is communicated with the mixed gas (17) respectively, the fuel tank (20) is also connected to the intake injector (1) and the heating injector (12), and the hydrogen storage tank (17) is connected to the ignition injector (5).
2. The ignition chamber engine according to claim 1, wherein the exhaust gas regulating valve (9) comprises a valve body (94), a first valve core (96), a second valve core (97), a third valve core (98) and a driving shaft (95), the first valve core (96), the second valve core (97) and the third valve core (98) are arranged in the valve body (94) at intervals to form an air inlet (91), an air outlet (92) and a cracking heating port (93), the air inlet (91), the air outlet (92) and the cracking heating port (93) are communicated, the driving shaft (95) is fixedly connected with the first valve core (96), the second valve core (97) and the third valve core (98), the air inlet (91) is communicated with the exhaust passage (8), and the cracking heating port (93) is connected with the fuel cracker (15) through a pipeline (23).
3. An ignition chamber engine according to claim 1 or 2, characterized in that the fuel cracker (15) is divided into an inner shell and an outer shell, the cavity of the inner shell is a reaction zone (155), the cavity between the inner shell and the outer shell is a heating zone (156), the two ends of the outer shell are respectively a tail gas inlet (151) and a tail gas outlet (152), the tail gas inlet (151) is communicated with the pipeline (23), the two ends of the inner shell are respectively a fuel inlet (153) and a fuel outlet (154), the fuel gasifying device (10) is communicated with the fuel inlet (153), and the fuel outlet (154) is communicated with a separation inlet (161) of the separator (16).
4. An ignition chamber engine according to any one of claims 1-3, characterized in that a gas mixture pressure regulating device (21) is further arranged between the separator (16) and the gas mixture injector (22), and the hydrogen storage tank (17) is connected with the gas mixture injector (22) after passing through the gas mixture pressure regulating device (21); a hydrogen pressure regulating device (19) is arranged between the hydrogen storage tank (17) and the ignition injector (5).
5. An ignition chamber engine according to claim 4, characterized in that the cylinder (24) is further provided with an in-cylinder direct injection injector (6), that the fuel tank (20) is connected to the in-cylinder direct injection injector (6), and that a direct injection feed pump (7) is further provided between the fuel tank (20) and the in-cylinder direct injection injector (6).
6. A control method of an ignition chamber engine according to claim 3, characterized in that, in particular in the case of engine starting conditions or low-load operating conditions, the inlet injector (1) injects fuel in the fuel tank (20) into the inlet channel (2) and/or the gas separated by the separator (16) is injected into the inlet channel (2) by the gas injector (22), the ignition injector (5) injects gas in the hydrogen storage tank (17) into the ignition chamber (4), the ignition spark plug (3) ignites the combustible gas, and the flame is injected into the engine cylinder (24) through the ignition nozzle (25) to trigger the combustion of the in-cylinder fuel; the driving shaft (95) of the exhaust regulating valve (9) is controlled to rotate so as to enlarge the flow area between the air inlet (91), the cracking heating port (93) and the pipeline (23), reduce the flow area of the exhaust port (92) or close the exhaust port (92), meanwhile, the air valve (13) is opened, the air storage tank (18) sprays air into the cracking heater (14), the heating injector (12) sprays fuel in the fuel tank (20) into the cracking heater (14), the heating spark plug (11) ignites the air, and the air with high temperature and high pressure after combustion is sprayed into the heating zone (156) of the fuel cracker (15) through the heating spray hole (141) to heat the reaction zone (155) of the fuel cracker (15); the fuel gasified by the fuel gasification device (10) enters a reaction zone (155) of the fuel cracker (15) through a fuel inlet (153), the reacted hydrogen-containing gas is stored in a hydrogen storage tank (17), and other gases separated by a separator (16) are sprayed into an air inlet channel (2) by means of a mixed gas injector (22);
During high-load operation conditions of the engine, the air inlet injector (1) injects fuel in the fuel tank (20) into the air inlet channel (2) and/or the mixed gas injector (22) injects gas separated by the separator (16) into the air inlet channel (2), the ignition injector (5) injects gas in the hydrogen storage tank (17) into the ignition chamber (4), the ignition spark plug (3) ignites combustible gas, and flame is injected into the engine cylinder (24) through the ignition jet orifice (25) to trigger in-cylinder fuel combustion; the driving shaft (95) of the exhaust regulating valve (9) is controlled to rotate so as to reduce the flow area among the air inlet (91), the cracking heating port (93) and the pipeline (23), meanwhile, the flow area of the air outlet (92) is increased, the air valve (13) and the heating injector (12) are closed, and the tail gas in the exhaust passage (8) is used for heating the reaction zone (155) of the fuel cracker (15); the fuel gasified by the fuel gasification device (10) enters a reaction zone (155) of the fuel cracker (15) through a fuel inlet (153), the reacted hydrogen-containing gas is stored in a hydrogen storage tank (17), and other gases separated by a separator (16) are sprayed into an air inlet channel (2) by means of a mixed gas injector (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410455188.2A CN118391148A (en) | 2024-04-16 | 2024-04-16 | Ignition chamber type engine and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410455188.2A CN118391148A (en) | 2024-04-16 | 2024-04-16 | Ignition chamber type engine and control method thereof |
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