CN114320581B - Hydrogen engine system, vehicle, and control method for hydrogen engine system - Google Patents
Hydrogen engine system, vehicle, and control method for hydrogen engine system Download PDFInfo
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- CN114320581B CN114320581B CN202111676535.7A CN202111676535A CN114320581B CN 114320581 B CN114320581 B CN 114320581B CN 202111676535 A CN202111676535 A CN 202111676535A CN 114320581 B CN114320581 B CN 114320581B
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- 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
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention provides a hydrogen engine system, a vehicle and a control method of the hydrogen engine system. The hydrogen engine system includes: the air inlet pipe of the cylinder is communicated with an air inlet system, and the air outlet pipe of the cylinder is communicated with an air outlet main pipe; the air inlet of the exhaust system is communicated with the exhaust manifold, and the exhaust system comprises a first exhaust pipeline and a second exhaust pipeline; the first end of the first heat exchanger is communicated with the first exhaust pipeline, the second end of the first heat exchanger is communicated with the tail pipe system, and the first heat exchanger is used for heating an oil pan of the engine; the energy conversion tank is communicated with the second exhaust pipeline; the condensed water storage tank is provided with a water inlet pipeline and a water spraying pipeline, the water inlet pipeline is communicated with the energy conversion tank, and the water spraying pipeline is communicated with an air inlet pipe of the cylinder. This scheme is used for heating machine oil with the waste gas that the engine produced, realizes quick warm-up, mixes the combustion temperature with the air with comdenstion water in order to reduce the engine.
Description
Technical Field
The invention relates to the technical field of engine design and manufacture, in particular to a hydrogen engine system, a vehicle and a control method of the hydrogen engine system.
Background
At present, the automobile product of the passenger car mainly uses a gasoline engine, and can reduce the emission at a lower speed stage in a hybrid power mode, but still has the emission problem. On the basis of a traditional large-emission natural air suction engine, technologies such as Atkinson cycle, high compression ratio, external cooling EGR, low friction and the like are applied to a Japanese system vehicle enterprise represented by Toyota to research and develop a hybrid power system, and compared with a gasoline engine product of a traditional passenger vehicle, the emission reduction of carbon dioxide is more than 20%, which is the leading level of the industry of the hybrid passenger vehicle, but the emission problem caused by gasoline combustion cannot be fundamentally solved.
Disclosure of Invention
The invention mainly aims to provide a hydrogen engine system, a vehicle and a control method of the hydrogen engine system, so as to solve the problem of exhaust emission caused by gasoline combustion in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a hydrogen engine system comprising: an air intake system; the cylinder is provided with at least one air inlet pipe and at least one exhaust pipe, the cylinder is communicated with an air inlet system through the air inlet pipe, and the exhaust pipe is communicated with an exhaust manifold; the air inlet of the exhaust system is communicated with the exhaust manifold, and the exhaust system comprises a first exhaust pipeline and a second exhaust pipeline; a first heat exchanger, a first end of which is communicated with the first exhaust pipeline; the second end of the first heat exchanger is communicated with the tail pipe system, and the first heat exchanger is used for heating an oil pan of the engine; the energy conversion tank is communicated with the second exhaust pipeline and the tail pipe system; the second heat exchanger is arranged in the energy conversion tank; the condensed water storage tank is provided with a water inlet pipeline and a water spray pipeline, the water inlet pipeline is communicated with the energy conversion tank, the water spray pipeline is communicated with an air inlet pipe of the cylinder, the water spray pipeline is arranged in one-to-one correspondence with the air inlet pipe, and the condensed water storage tank is used for storing condensed water formed in the energy conversion tank.
Further, the hydrogen engine system further includes: the temperature difference power generation system exchanges heat with the second heat exchanger to generate electric energy; the storage battery is electrically connected with the temperature difference power generation system and used for storing electric energy generated by the temperature difference power generation system.
Further, the hydrogen engine system further includes: the first end and the inlet channel intercommunication of force (forcing) pump, the second end and the thermoelectric generation system of force (forcing) pump, at least one electric connection in the battery, the force (forcing) pump is arranged in with the comdenstion water drive in the inlet channel to the comdenstion water storage jar.
Further, the temperature difference power generation system is connected with the pressure pump through a first switch, and the storage battery is connected with the pressure pump through a second switch.
Furthermore, the number of the water spraying pipelines is multiple, the number of the air inlet pipes is multiple, the water spraying pipelines and the air inlet pipes are arranged in a one-to-one correspondence mode, a water sprayer is arranged on each water spraying pipeline, and/or a condensed water sensor is arranged on each water spraying pipeline and is used for detecting the water spraying amount entering each cylinder.
Further, the hydrogen engine system further includes: and the temperature sensor is connected with the oil pan and is used for detecting the temperature of the oil pan.
According to another aspect of the present invention, there is provided a vehicle comprising a hydrogen engine system, the hydrogen engine system being as described above.
According to another aspect of the present invention, there is provided a control method of a hydrogen engine system, the method including the steps of: in the working process of the engine, when the engine oil temperature of the engine is less than or equal to the lower limit value of the preset engine oil temperature, closing the second valve structure, opening the first valve structure, and controlling the first heat exchanger to heat the oil pan of the engine; when the temperature of the engine oil is greater than the preset engine oil temperature lower limit value and less than the preset engine oil temperature upper limit value, the first valve structure and the second valve structure are opened, and the first heat exchanger is controlled to heat an oil pan of the engine; and when the temperature of the engine oil is greater than the preset upper limit value of the temperature of the engine oil, the second valve structure is opened, the first valve structure is closed, the first heat exchanger is controlled to stop working, and the second heat exchanger is controlled to be in a working state.
Further, the method comprises: when the temperature of the engine oil is higher than the preset upper limit value of the engine oil temperature and the residual electric quantity of the storage battery is lower than or equal to the preset lower limit value of the electric quantity, controlling the third valve structure to close and controlling the thermoelectric power generation system to work so that the thermoelectric power generation system charges the storage battery; when the residual electric quantity of the storage battery is larger than the preset electric quantity lower limit value and smaller than the preset electric quantity upper limit value, controlling a third valve structure to be opened, and controlling the thermoelectric power generation system to work so that the thermoelectric power generation system charges the storage battery; and when the residual electric quantity of the storage battery is greater than the preset electric quantity upper limit value, controlling the third valve structure to be opened, and controlling the thermoelectric power generation system to stop working.
Further, when the remaining capacity of the storage battery is greater than a preset capacity lower limit value, the method controls the pressure pump to drive the condensed water into the condensed water storage tank, and further comprises the following steps: when the required power of the pressure pump is larger than the power of the temperature difference power generation system, controlling the first switch and the second switch to be closed so that the storage battery and the temperature difference power generation system jointly provide electric energy for the pressure pump to drive condensed water into the condensed water storage tank; when the required power of the booster pump is smaller than or equal to the power of the thermoelectric generation system, the second switch is controlled to be switched off, and the first switch is controlled to be switched on, so that the thermoelectric generation system independently provides electric energy for the booster pump.
By applying the technical scheme of the invention, the engine taking hydrogen as a main power source can reduce exhaust emission, the exhaust system of the hydrogen engine is provided with the first exhaust pipeline and the second exhaust pipeline, the first exhaust pipeline can use the exhaust generated by the engine to heat engine oil of the engine, so that the engine can be quickly warmed up, the second exhaust pipeline can circularly use condensed water generated after the exhaust of the engine is condensed, the condensed water is mixed with the intake air of the engine, and the combustion temperature of the engine is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic diagram of an embodiment of a hydrogen engine system according to the present invention;
fig. 2 shows a schematic flow diagram of an embodiment of the control method of the hydrogen engine system according to the invention.
Wherein the figures include the following reference numerals:
1. an air intake system;
2. a cylinder; 21. an air inlet pipe; 22. an exhaust pipe;
3. an exhaust manifold;
4. an exhaust system; 41. a first exhaust line; 410. a temperature sensor; 411. a first heat exchanger; 412. a first valve structure; 42. a second exhaust line; 421. a second heat exchanger; 422. a second valve structure; 43. an energy conversion tank;
5. a tail pipe system;
6. a condensed water storage tank; 61. a water inlet pipeline; 611. a third valve structure; 62. a water spray pipeline; 621. a water sprayer; 622. a condensate water sensor;
7. a thermoelectric power generation system; 71. a first switch;
8. a storage battery; 81. a second switch;
9. a pressure pump.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1-2, a hydrogen engine system is provided according to an embodiment of the present application.
The hydrogen engine system includes: an air intake system 1; the number of the cylinders 2 is at least one, each cylinder 2 is provided with at least one air inlet pipe 21 and at least one exhaust pipe 22, each cylinder 2 is communicated with the air inlet system 1 through the air inlet pipe 21, and each exhaust pipe 22 is communicated with the exhaust manifold 3; an exhaust system 4, an air inlet of the exhaust system 4 is communicated with the exhaust manifold 3, and the exhaust system 4 comprises a first exhaust pipeline 41 and a second exhaust pipeline 42; a first heat exchanger 411, a first end of the first heat exchanger 411 being in communication with the first exhaust line 41; a tail pipe system 5, a second end of the first heat exchanger 411 is communicated with the tail pipe system 5, and the first heat exchanger 411 is used for heating an oil pan of the engine; an energy conversion tank 43, the energy conversion tank 43 being in communication with the second exhaust line 42, the energy conversion tank 43 being in communication with the tail pipe system 5; a second heat exchanger 421, the second heat exchanger 421 being disposed in the energy conversion tank 43; and the condensed water storage tank 6 is provided with a water inlet pipeline 61 and a water spraying pipeline 62, the water inlet pipeline 61 is communicated with the energy conversion tank 43, the water spraying pipeline 62 is communicated with the air inlet pipe 21 of the cylinder 2, the water spraying pipeline 62 and the air inlet pipe 21 are arranged in a one-to-one correspondence manner, and the condensed water storage tank 6 is used for storing condensed water formed in the energy conversion tank 43.
Use the technical scheme of this embodiment, use the reducible exhaust emission of engine of hydrogen as main power supply, the exhaust system of hydrogen engine has first exhaust pipeline and second exhaust pipeline, first exhaust pipeline can be used for the machine oil of heating the engine with the waste gas that the engine produced, make the engine realize quick warm-up, the second exhaust pipeline can be with the comdenstion water recycling that produces behind the engine exhaust condensation, make comdenstion water and engine intake mix, reduce the combustion temperature of engine, the hydrogen engine in this scheme is when solving the exhaust emission problem, can realize quick warm-up, promote the dynamic behavior and the economic nature of engine.
In one embodiment of the present application, to facilitate control of the first exhaust pipe 41 and the second exhaust pipe 42, valve structures may be respectively disposed on the first exhaust pipe 41 and the second exhaust pipe 42, as shown in fig. 1, a first valve structure 412 is disposed on the first exhaust pipe 41, and a second valve structure 422 is disposed on the second exhaust pipe 42, and by controlling the opening degrees of the first valve structure 412 and the second valve structure 422, the amount of exhaust gas entering the first exhaust pipe 41 and the second exhaust pipe 42 can be adjusted.
In one embodiment of the present application, the number of the cylinders 2 may be four, the four cylinders 2 respectively have one intake pipe 21 and one exhaust pipe 22, and the four exhaust pipes 22 communicate with the exhaust manifold 3. Preferably, one cylinder exhaust gas sensor may be provided on each of the four exhaust pipes 22 so as to detect the amount of exhaust gas of each cylinder 2 of the engine system in real time.
In one embodiment of the present application, an air cleaner is provided in front of the intake system 1 for improving engine performance, and as shown in fig. 1, the air cleaner is used to filter impurities contained in air introduced into the cylinder 2.
Specifically, the hydrogen engine system further comprises a thermoelectric generation system 7 and a storage battery 8, the thermoelectric generation system 7 exchanges heat with the second heat exchanger 421 to generate electric energy, the storage battery 8 is electrically connected with the thermoelectric generation system 7, and the storage battery 8 is used for storing the electric energy generated by the thermoelectric generation system 7. The energy recovery of the engine system can be realized through the arrangement of the storage battery 8, and meanwhile, the storage battery 8 can be used for providing electric energy required by a hybrid vehicle to form intelligent controllable circulation. The thermoelectric generation system 7 may be a thermoelectric converter.
Specifically, the hydrogen engine system further comprises a pressure pump 9, a first end of the pressure pump 9 is communicated with the water inlet pipeline 61, a second end of the pressure pump 9 is electrically connected with at least one of the thermoelectric generation system 7 and the storage battery 8, and the pressure pump 9 is used for driving the condensed water in the water inlet pipeline 61 into the condensed water storage tank 6. The arrangement of the pressure pump 9 is beneficial to the condensed water in the water inlet pipeline 61 to enter the condensed water storage tank 6, and the full recycling of the energy of the hydrogen engine system is realized. In one embodiment of the present application, the second end of the pressure pump 9 is connected to the thermoelectric generation system 7 and the battery 8 through two switches, so that when the thermoelectric generation system 7 is short of power, the power stored in the battery 8 can be used to drive the pressure pump 9.
The thermoelectric generation system 7 is connected to the pressure pump 9 through a first switch 71, and the battery 8 is connected to the pressure pump 9 through a second switch 81. When the first switch 71 and the second switch 81 are both closed, the thermoelectric generation system 7 and the storage battery 8 jointly provide electric energy for the booster pump 9, when the first switch 71 is closed and the second switch 81 is opened, a part of electric energy of the thermoelectric generation system 7 is provided for the booster pump 9, and a part of electric energy is stored in the storage battery 8, so that reasonable distribution and utilization of energy can be realized, and energy conservation and emission reduction are realized.
Preferably, there are a plurality of water spraying pipes 62, a plurality of air inlet pipes 21, a plurality of water spraying pipes 62 and a plurality of air inlet pipes 21 are arranged in one-to-one correspondence, each water spraying pipe 62 is provided with a water sprayer 621, and/or each water spraying pipe 62 is provided with a condensed water sensor 622, and the condensed water sensor 622 is used for detecting the amount of water sprayed into each cylinder 2. In practical applications, the water spraying pipe 62 may be provided with a water sprayer 621 and a condensed water sensor 622. Taking a hydrogen engine system with four cylinders 2 as an example, the number of the water spraying pipes 62 may be four, the hydrogen engine system has four air inlet pipes 21, the four water spraying pipes 62 are arranged corresponding to the four air inlet pipes 21, and each water spraying pipe 62 is provided with a water sprayer 621 and a condensed water sensor 622. The water sprayer 621 can be used for spraying water into each air inlet pipe 21 in the water spraying pipeline 62, so that air entering each cylinder is mixed with condensed water, the combustion temperature of each cylinder is reduced, and the condensed water sensor 622 can be used for detecting and feeding back the water spraying amount entering each cylinder, so that the water spraying amount entering each cylinder can be adjusted according to actual needs, and too much or too little condensed water sprayed into each cylinder is avoided. Each cylinder 2 is provided with a water sprayer 621 and a condensed water sensor 622, so that the amount of condensed water entering each cylinder 2 can be independently adjusted according to actual needs, and the accurate control of the amount of water sprayed by each cylinder 2 is achieved.
In one embodiment of the present application, PID control may be used to control the amount of water sprayed from each water sprayer 621, so as to achieve precise control of the amount of water sprayed from the intake pipe 21 of each cylinder 2. For the convenience of control, a preset target water spraying ratio may be set, and the water spraying amount of each water sprayer 621 is adjusted according to the feedback value of each condensed water sensor 622.
Specifically, the hydrogen engine system further includes a temperature sensor 410, the temperature sensor 410 is connected to the oil pan, and the temperature sensor 410 is configured to detect the temperature of the oil pan. The temperature sensor 410 can detect and feed back the temperature of an oil pan of the engine in real time, and the situation that the engine performance is influenced by too high oil temperature or the engine is started slowly due to too low oil temperature is avoided.
The hydrogen engine system provided by the scheme takes hydrogen as a main power source to replace the traditional gasoline or diesel power generation mode, so that the emission problem can be fundamentally solved; the hydrogen engine system generates electricity by utilizing exhaust energy temperature difference to realize quick warming; water in the condensed exhaust is recycled and guided into the engine, so that the temperature in the cylinder is effectively reduced, the heat transfer loss is reduced, and the economy is further improved. The application provides a hydrogen engine can also compromise dynamic property and economic nature when solving the emission problem.
According to another specific embodiment of the present application, there is provided a vehicle including a hydrogen engine system, the hydrogen engine system being the hydrogen engine system described above.
The vehicle with the hydrogen engine system uses the fuel which is mainly hydrogen, and the combustion product is only water, so that the problem of emission of passenger vehicle products can be solved; utilize thermoelectric generation mode to collect the exhaust energy of hydrogen engine, can realize quick warm-up, collect the comdenstion water in the exhaust, through the leading-in engine of recirculation system, further reduce combustion temperature, reduce heat transfer loss, promote economic performance. The storage battery in the hydrogen engine system can enable the vehicle to adopt a hybrid power mode, and the power performance is improved. The vehicle has wide application prospect in the future environmental protection field and the green trip field.
According to another specific embodiment of the present application, there is provided an SUV (Sport Utility Vehicle) Vehicle whose engine has the hydrogen engine system in the above-described embodiment. As shown in fig. 1, the hydrogen engine system includes: an air cleaner; the air inlet system 1 is connected with the air filter, and the air inlet system 1 is connected with the air filter; the number of the cylinders 2 is four, each cylinder 2 is provided with an air inlet pipe 21 and an air outlet pipe 22, the cylinders 2 are communicated with the air inlet system 1 through the air inlet pipes 21, and the air outlet pipes 22 are communicated with the air outlet manifold 3; an exhaust system 4, an air inlet of the exhaust system 4 is communicated with the exhaust manifold 3, and the exhaust system 4 comprises a first exhaust pipeline 41 and a second exhaust pipeline 42; a first heat exchanger 411, a first end of the first heat exchanger 411 communicating with the first exhaust line 41; a tail pipe system 5, a second end of the first heat exchanger 411 is communicated with the tail pipe system 5, and the first heat exchanger 411 is used for heating an oil pan of the engine; an energy conversion tank 43, the energy conversion tank 43 being in communication with the second exhaust line 42, the energy conversion tank 43 being in communication with the tail pipe system 5; a second heat exchanger 421, the second heat exchanger 421 being disposed in the energy conversion tank 43; and the condensed water storage tank 6 is provided with a water inlet pipeline 61 and a water spraying pipeline 62, the water inlet pipeline 61 is communicated with the energy conversion tank 43, the water spraying pipeline 62 is communicated with the air inlet pipe 21 of the cylinder 2, the water spraying pipeline 62 and the air inlet pipe 21 are arranged in a one-to-one correspondence manner, and the condensed water storage tank 6 is used for storing condensed water formed in the energy conversion tank 43.
In one embodiment, to facilitate control of the first and second vent lines 41, 42, valve structures may be provided on the first and second vent lines 41, 42, respectively. In order to facilitate real-time detection of the amount of exhaust gas of each cylinder 2 of the engine system, a cylinder exhaust gas sensor is provided on each of the four exhaust pipes 22.
Specifically, the hydrogen engine system further comprises a thermoelectric generation system 7 and a storage battery 8, the thermoelectric generation system 7 exchanges heat with the second heat exchanger 421 to generate electric energy, the storage battery 8 is electrically connected with the thermoelectric generation system 7, and the storage battery 8 is used for storing the electric energy generated by the thermoelectric generation system 7. The energy recovery of the engine system can be realized through the arrangement of the storage battery 8, and meanwhile, the storage battery 8 can be used for providing electric energy required by a hybrid vehicle to form intelligent controllable circulation. The thermoelectric generation system 7 may be a thermoelectric converter.
Specifically, the hydrogen engine system further comprises a pressure pump 9, a first end of the pressure pump 9 is communicated with the water inlet pipeline 61, a second end of the pressure pump 9 is electrically connected with at least one of the thermoelectric generation system 7 and the storage battery 8, and the pressure pump 9 is used for driving the condensed water in the water inlet pipeline 61 into the condensed water storage tank 6. The arrangement of the pressure pump 9 is beneficial to the condensed water in the water inlet pipeline 61 to enter the condensed water storage tank 6, and the full recycling of the energy of the hydrogen engine system is realized. In one embodiment of the present application, the second end of the pressure pump 9 is connected to the thermoelectric generation system 7 and the battery 8 through two switches, so that when the thermoelectric generation system 7 is short of power, the power stored in the battery 8 can be used to drive the pressure pump 9.
The thermoelectric generation system 7 is connected to the pressure pump 9 through a first switch 71, and the battery 8 is connected to the pressure pump 9 through a second switch 81. When the first switch 71 and the second switch 81 are both closed, the thermoelectric generation system 7 and the storage battery 8 jointly provide electric energy for the booster pump 9, when the first switch 71 is closed and the second switch 81 is opened, a part of electric energy of the thermoelectric generation system 7 is provided for the booster pump 9, and a part of electric energy is stored in the storage battery 8, so that reasonable distribution and utilization of energy can be realized, and energy conservation and emission reduction are realized.
In one embodiment of the present application, the number of the water spraying pipes 62 is four, the hydrogen engine system has four air inlet pipes 21, the four water spraying pipes 62 are disposed in one-to-one correspondence with the four air inlet pipes 21, and meanwhile, each water spraying pipe 62 is provided with a water sprayer 621 and a condensed water sensor 622. The water sprayer 621 can be used for spraying water in the water spraying pipeline 62 into each air inlet pipe 21, so that air entering each cylinder is mixed with condensed water, the combustion temperature of each cylinder is reduced, the condensed water sensor 622 can be used for detecting and feeding back the water spraying amount entering each cylinder, the water spraying amount entering each cylinder is convenient to adjust according to actual needs, and too much or too little condensed water sprayed into each cylinder is avoided. Each cylinder 2 is provided with a water sprayer 621 and a condensed water sensor 622, so that the amount of condensed water entering each cylinder 2 can be independently adjusted according to actual needs, and the accurate control of the amount of water sprayed by each cylinder 2 is achieved.
In one embodiment of the present application, the water injection amount of each water injector 621 may be controlled using PID to achieve precise control of the water injection amount of the intake pipe 21 of each cylinder 2. For the convenience of control, a preset target water spraying ratio may be set, and the water spraying amount of each water sprayer 621 is adjusted according to the feedback value of each condensed water sensor 622.
Specifically, the hydrogen engine system further includes a temperature sensor 410, the temperature sensor 410 is connected to the oil pan, and the temperature sensor 410 is configured to detect the temperature of the oil pan. The temperature sensor 410 can detect and feed back the temperature of an oil pan of the engine in real time, and the situation that the engine performance is influenced by too high oil temperature or the engine is started slowly due to too low oil temperature is avoided.
The hydrogen engine system provided by the scheme takes hydrogen as a main power source to replace the traditional gasoline or diesel power generation mode, so that the emission problem can be fundamentally solved; the hydrogen engine system generates electricity by utilizing exhaust energy temperature difference to realize quick warming; water in the condensed exhaust is recycled and guided into the engine, so that the temperature in the cylinder is effectively reduced, the heat transfer loss is reduced, and the economy is further improved. The SUV vehicle with the hydrogen engine system can solve the emission problem and simultaneously can also take both the dynamic property and the economical efficiency into consideration.
According to another embodiment of the present application, there is provided a sedan having the hydrogen engine system of the above embodiment. As shown in fig. 1, the hydrogen engine system includes: an air cleaner; the air inlet system 1 is connected with the air filter 1; the number of the cylinders 2 is four, each cylinder 2 is provided with an air inlet pipe 21 and an air outlet pipe 22, the cylinders 2 are communicated with the air inlet system 1 through the air inlet pipes 21, and the air outlet pipes 22 are communicated with the air outlet manifold 3; an exhaust system 4, an air inlet of the exhaust system 4 is communicated with the exhaust manifold 3, and the exhaust system 4 comprises a first exhaust pipeline 41 and a second exhaust pipeline 42; a first heat exchanger 411, a first end of the first heat exchanger 411 communicating with the first exhaust line 41; a tail pipe system 5, a second end of the first heat exchanger 411 is communicated with the tail pipe system 5, and the first heat exchanger 411 is used for heating an oil pan of the engine; an energy conversion tank 43, the energy conversion tank 43 being in communication with the second exhaust line 42, the energy conversion tank 43 being in communication with the tail pipe system 5; a second heat exchanger 421, the second heat exchanger 421 being disposed in the energy conversion tank 43; and the condensed water storage tank 6 is provided with a water inlet pipeline 61 and a water spraying pipeline 62, the water inlet pipeline 61 is communicated with the energy conversion tank 43, the water spraying pipeline 62 is communicated with the air inlet pipe 21 of the cylinder 2, the water spraying pipeline 62 and the air inlet pipe 21 are arranged in a one-to-one correspondence manner, and the condensed water storage tank 6 is used for storing condensed water formed in the energy conversion tank 43.
In one embodiment, to facilitate control of the first and second vent lines 41, 42, valve structures may be provided on the first and second vent lines 41, 42, respectively. In order to facilitate real-time detection of the amount of exhaust gas of each cylinder 2 of the engine system, a cylinder exhaust gas sensor is provided on each of the four exhaust pipes 22.
Specifically, the hydrogen engine system further comprises a thermoelectric generation system 7 and a storage battery 8, the thermoelectric generation system 7 exchanges heat with the second heat exchanger 421 to generate electric energy, the storage battery 8 is electrically connected with the thermoelectric generation system 7, and the storage battery 8 is used for storing the electric energy generated by the thermoelectric generation system 7. The energy recovery of the engine system can be realized through the arrangement of the storage battery 8, and meanwhile, the storage battery 8 can be used for providing electric energy required by a hybrid vehicle to form intelligent controllable circulation. The thermoelectric generation system 7 may be a thermoelectric converter.
Specifically, the hydrogen engine system further comprises a pressure pump 9, a first end of the pressure pump 9 is communicated with the water inlet pipeline 61, a second end of the pressure pump 9 is electrically connected with at least one of the thermoelectric generation system 7 and the storage battery 8, and the pressure pump 9 is used for driving the condensed water in the water inlet pipeline 61 into the condensed water storage tank 6. The arrangement of the pressure pump 9 is beneficial to the condensed water in the water inlet pipeline 61 to enter the condensed water storage tank 6, and the full recycling of the energy of the hydrogen engine system is realized. In one embodiment of the present application, the second end of the pressure pump 9 is connected to the thermoelectric generation system 7 and the battery 8 through two switches, so that when the thermoelectric generation system 7 is short of power, the power stored in the battery 8 can be used to drive the pressure pump 9.
The thermoelectric generation system 7 is connected to the pressure pump 9 through a first switch 71, and the battery 8 is connected to the pressure pump 9 through a second switch 81. When the first switch 71 and the second switch 81 are both closed, the thermoelectric generation system 7 and the storage battery 8 jointly provide electric energy for the booster pump 9, when the first switch 71 is closed and the second switch 81 is opened, a part of electric energy of the thermoelectric generation system 7 is provided for the booster pump 9, and a part of electric energy is stored in the storage battery 8, so that reasonable distribution and utilization of energy can be realized, and energy conservation and emission reduction are realized.
In one embodiment of the present application, the number of the water spraying pipes 62 is four, the hydrogen engine system has four air inlet pipes 21, the four water spraying pipes 62 are disposed in one-to-one correspondence with the four air inlet pipes 21, and meanwhile, each water spraying pipe 62 is provided with a water sprayer 621 and a condensed water sensor 622. The water sprayer 621 can be used for spraying water in the water spraying pipeline 62 into each air inlet pipe 21, so that air entering each cylinder is mixed with condensed water, the combustion temperature of each cylinder is reduced, the condensed water sensor 622 can be used for detecting and feeding back the water spraying amount entering each cylinder, the water spraying amount entering each cylinder is convenient to adjust according to actual needs, and too much or too little condensed water sprayed into each cylinder is avoided. Each cylinder 2 is provided with a water sprayer 621 and a condensed water sensor 622, so that the amount of condensed water entering each cylinder 2 can be independently adjusted according to actual needs, and the accurate control of the amount of water sprayed by each cylinder 2 is achieved.
In one embodiment of the present application, PID control may be used to control the amount of water sprayed from each water sprayer 621, so as to achieve precise control of the amount of water sprayed from the intake pipe 21 of each cylinder 2. For the convenience of control, a preset target water spraying ratio may be set, and the water spraying amount of each water sprayer 621 is adjusted according to the feedback value of each condensed water sensor 622.
Specifically, the hydrogen engine system further includes a temperature sensor 410, the temperature sensor 410 is connected to the oil pan, and the temperature sensor 410 is configured to detect the temperature of the oil pan. The temperature sensor 410 can detect and feed back the temperature of an oil pan of the engine in real time, and the situation that the engine performance is influenced by too high oil temperature or the engine is started slowly due to too low oil temperature is avoided.
The hydrogen engine system provided by the scheme takes hydrogen as a main power source to replace the traditional gasoline or diesel power generation mode, so that the emission problem can be fundamentally solved; the hydrogen engine system generates electricity by utilizing exhaust energy temperature difference to realize quick warming; water in the condensed exhaust is recycled and guided into the engine, so that the temperature in the cylinder is effectively reduced, the heat transfer loss is reduced, and the economy is further improved. The car with the hydrogen engine system can solve the problem of emission and simultaneously can also take power performance and economy into consideration.
According to another specific embodiment of the present application, there is provided an MPV (Multi-Purpose Vehicle) Vehicle having the hydrogen engine system in the above-described embodiment. As shown in fig. 1, the hydrogen engine system includes: an air cleaner; the air inlet system 1 is connected with the air filter 1; the number of the cylinders 2 is four, each cylinder 2 is provided with an air inlet pipe 21 and an air outlet pipe 22, the cylinders 2 are communicated with the air inlet system 1 through the air inlet pipes 21, and the air outlet pipes 22 are communicated with the air outlet manifold 3; an exhaust system 4, an air inlet of the exhaust system 4 is communicated with the exhaust manifold 3, and the exhaust system 4 comprises a first exhaust pipeline 41 and a second exhaust pipeline 42; a first heat exchanger 411, a first end of the first heat exchanger 411 communicating with the first exhaust line 41; a tail pipe system 5, a second end of the first heat exchanger 411 is communicated with the tail pipe system 5, and the first heat exchanger 411 is used for heating an oil pan of the engine; an energy conversion tank 43, the energy conversion tank 43 being in communication with the second exhaust line 42, the energy conversion tank 43 being in communication with the tail pipe system 5; a second heat exchanger 421, the second heat exchanger 421 being disposed in the energy conversion tank 43; and the condensed water storage tank 6 is provided with a water inlet pipeline 61 and a water spraying pipeline 62, the water inlet pipeline 61 is communicated with the energy conversion tank 43, the water spraying pipeline 62 is communicated with the air inlet pipe 21 of the cylinder 2, the water spraying pipeline 62 and the air inlet pipe 21 are arranged in a one-to-one correspondence manner, and the condensed water storage tank 6 is used for storing condensed water formed in the energy conversion tank 43.
In one embodiment, to facilitate control of the first and second vent lines 41, 42, valve structures may be provided on the first and second vent lines 41, 42, respectively. In order to facilitate real-time detection of the amount of exhaust gas of each cylinder 2 of the engine system, a cylinder exhaust gas sensor is provided on each of the four exhaust pipes 22.
Specifically, the hydrogen engine system further comprises a thermoelectric generation system 7 and a storage battery 8, the thermoelectric generation system 7 exchanges heat with the second heat exchanger 421 to generate electric energy, the storage battery 8 is electrically connected with the thermoelectric generation system 7, and the storage battery 8 is used for storing the electric energy generated by the thermoelectric generation system 7. The energy recovery of the engine system can be realized through the arrangement of the storage battery 8, and meanwhile, the storage battery 8 can be used for providing electric energy required by a hybrid vehicle to form intelligent controllable circulation. The thermoelectric generation system 7 may be a thermoelectric converter.
Specifically, the hydrogen engine system further comprises a pressure pump 9, a first end of the pressure pump 9 is communicated with the water inlet pipeline 61, a second end of the pressure pump 9 is electrically connected with at least one of the thermoelectric generation system 7 and the storage battery 8, and the pressure pump 9 is used for driving the condensed water in the water inlet pipeline 61 into the condensed water storage tank 6. The arrangement of the pressure pump 9 is beneficial to the condensed water in the water inlet pipeline 61 to enter the condensed water storage tank 6, and the full recycling of the energy of the hydrogen engine system is realized. In one embodiment of the present application, the second end of the pressure pump 9 is connected to the thermoelectric generation system 7 and the battery 8 through two switches, so that when the thermoelectric generation system 7 is short of power, the power stored in the battery 8 can be used to drive the pressure pump 9.
The thermoelectric generation system 7 is connected to the pressure pump 9 through a first switch 71, and the battery 8 is connected to the pressure pump 9 through a second switch 81. When the first switch 71 and the second switch 81 are both closed, the thermoelectric generation system 7 and the storage battery 8 jointly provide electric energy for the booster pump 9, when the first switch 71 is closed and the second switch 81 is opened, a part of electric energy of the thermoelectric generation system 7 is provided for the booster pump 9, and a part of electric energy is stored in the storage battery 8, so that reasonable distribution and utilization of energy can be realized, and energy conservation and emission reduction are realized.
In one embodiment of the present application, the number of the water spraying pipes 62 is four, the hydrogen engine system has four air inlet pipes 21, the four water spraying pipes 62 are disposed in one-to-one correspondence with the four air inlet pipes 21, and meanwhile, each water spraying pipe 62 is provided with a water sprayer 621 and a condensed water sensor 622. The water sprayer 621 can be used for spraying water in the water spraying pipeline 62 into each air inlet pipe 21, so that air entering each cylinder is mixed with condensed water, the combustion temperature of each cylinder is reduced, the condensed water sensor 622 can be used for detecting and feeding back the water spraying amount entering each cylinder, the water spraying amount entering each cylinder is convenient to adjust according to actual needs, and too much or too little condensed water sprayed into each cylinder is avoided. Each cylinder 2 is provided with a water sprayer 621 and a condensed water sensor 622, so that the amount of condensed water entering each cylinder 2 can be independently adjusted according to actual needs, and the accurate control of the amount of water sprayed by each cylinder 2 is achieved.
In one embodiment of the present application, PID control may be used to control the amount of water sprayed from each water sprayer 621, so as to achieve precise control of the amount of water sprayed from the intake pipe 21 of each cylinder 2. For the convenience of control, a preset target water spraying ratio may be set, and the water spraying amount of each water sprayer 621 is adjusted according to the feedback value of each condensed water sensor 622.
Specifically, the hydrogen engine system further includes a temperature sensor 410, the temperature sensor 410 is connected to the oil pan, and the temperature sensor 410 is configured to detect the temperature of the oil pan. The temperature sensor 410 can detect and feed back the temperature of an oil pan of the engine in real time, and the situation that the engine performance is influenced by too high oil temperature or the engine is started slowly due to too low oil temperature is avoided.
The hydrogen engine system provided by the scheme takes hydrogen as a main power source to replace the traditional gasoline or diesel power generation mode, so that the emission problem can be fundamentally solved; the hydrogen engine system generates electricity by utilizing exhaust energy temperature difference to realize quick warming; water in the condensed exhaust is recycled and guided into the engine, so that the temperature in the cylinder is effectively reduced, the heat transfer loss is reduced, and the economy is further improved. The MPV vehicle with the hydrogen engine system can solve the emission problem and simultaneously can also take both the dynamic property and the economical efficiency into consideration.
According to another specific embodiment of the present application, there is provided a control method of a hydrogen engine system, the method including the steps of: in the operation process of the engine, when the oil temperature of the engine is less than or equal to the lower limit value of the preset oil temperature, the second valve structure 422 is closed, the first valve structure 412 is opened, and the first heat exchanger 411 is controlled to heat the oil pan of the engine; when the oil temperature is greater than the preset oil temperature lower limit and less than the preset oil temperature upper limit, the first valve structure 412 and the second valve structure are openedA valve structure 422 for controlling the first heat exchanger 411 to heat the oil pan of the engine; when the temperature of the engine oil is higher than the preset upper limit value of the temperature of the engine oil, the second valve structure 422 is opened, the first valve structure 412 is closed, the first heat exchanger 411 is controlled to stop working, and the second heat exchanger 421 is controlled to be in a working state. As shown in FIG. 2, when the engine is started, due to the oil temperature (T shown in FIG. 2) W ) And at the moment, the second valve structure 422 is closed, the first valve structure 412 is opened, and the first heat exchanger 411 is controlled to heat the oil pan of the engine, so that the engine can be quickly warmed up, and the fuel consumption is reduced. When the oil temperature is greater than the preset oil temperature lower limit value (T shown in FIG. 2) WL ) And is less than a preset upper limit oil temperature value (T shown in FIG. 2) WH ) When the first valve structure 412 and the second valve structure 422 are both open, part of the exhaust energy is used for heating the engine oil, and the other part of the exhaust energy is exhausted to the tail pipe system 5 through the second exhaust pipe 42 or stored and recycled, and the exhaust gas quantity ratio entering the first exhaust pipe 41 and the second exhaust pipe 42 can be distributed by adjusting the opening degrees of the first valve structure 412 and the second valve structure 422. When the temperature of the engine oil is higher than the preset upper limit of the temperature of the engine oil, the engine oil does not need to be heated, the second valve structure 422 is opened, the first valve structure 412 is closed, and the whole exhaust energy is recycled or discharged out of the engine through the second exhaust pipeline 42.
Specifically, the method further comprises: when the temperature of the engine oil is greater than the preset upper limit value of the engine oil temperature and the residual electric quantity of the storage battery 8 is less than or equal to the preset lower limit value of the electric quantity, the third valve structure 611 is controlled to be closed, and the thermoelectric power generation system 7 is controlled to work, so that the thermoelectric power generation system 7 charges the storage battery 8; when the residual electric quantity of the storage battery 8 is greater than the preset electric quantity lower limit value and less than the preset electric quantity upper limit value, controlling the third valve structure 611 to be opened, and controlling the thermoelectric generation system 7 to work so that the thermoelectric generation system 7 charges the storage battery 8; and when the residual electric quantity of the storage battery 8 is larger than the preset electric quantity upper limit value, controlling the third valve structure 611 to open, and controlling the thermoelectric generation system 7 to stop working. As shown in fig. 2, the remaining capacity (SOC shown in fig. 2) of the battery 8 is less than or equal toPresetting a power lower limit value (SOC shown in fig. 2) L ) At this time, the third valve structure 611 is closed, and the electric energy generated by the thermoelectric generation system 7 is all stored in the battery 8. The remaining capacity of the storage battery 8 is greater than a preset capacity lower limit value and less than a preset capacity upper limit value (SOC shown in fig. 2) H ) At this time, part of the electric power generated by the thermoelectric generation system 7 is stored in the storage battery 8, and the other part of the electric power is used to be supplied to the pressurizing pump 9 so that the pressurizing pump 9 drives the condensed water into the condensed water storage tank 6. When the remaining capacity of the storage battery 8 is greater than the preset capacity upper limit value, the thermoelectric generation system 7 stops supplying electric energy to the storage battery 8, and the electric energy generated by the thermoelectric generation system 7 is entirely supplied to the pressurizing pump 9 so that the pressurizing pump 9 drives the condensed water into the condensed water storage tank 6. The exhaust energy generated by the engine can be fully utilized, the exhaust energy is converted into electric energy to be stored in the storage battery 8 to be used for supplying power to a vehicle system, and reasonable distribution and recycling of the energy are achieved.
Specifically, the method further comprises: when the residual capacity of the storage battery 8 is greater than the preset capacity lower limit value, the method controls the pressure pump 9 to drive the condensed water into the condensed water storage tank 6, and further comprises the following steps: when the required power of the pressure pump 9 is larger than the power of the temperature difference power generation system, controlling the first switch 71 and the second switch 81 to be closed so that the storage battery 8 and the temperature difference power generation system 7 jointly supply electric energy to the pressure pump 9 to drive the condensed water into the condensed water storage tank 6; when the required power of the booster pump 9 is less than or equal to the thermoelectric generation system power, the second switch 81 is controlled to be opened, and the first switch 71 is controlled to be closed, so that the thermoelectric generation system 7 independently supplies electric energy to the booster pump 9. As shown in fig. 2, the required power (P shown in fig. 2) of the booster pump 9 is larger than the thermoelectric generation system power (P shown in fig. 2) W ) When the first switch 71 and the second switch 81 are controlled to be closed, the storage battery 8 and the thermoelectric generation system 7 jointly supply electric energy to the pressure pump 9 to drive the condensed water into the condensed water storage tank 6, so that the electric energy stored in the storage battery 8 can be fully utilized, and the energy is saved; when the power required by the booster pump 9 is less than or equal to the power of the thermoelectric generation system, the second switch 81 is opened, the first switch 71 is closed, and part of the electric power generated by the thermoelectric generation system 7 is supplied to the booster pump 9 to cause the booster pump 9 to generate electric powerThe pressure pump 9 drives the condensed water to the condensed water storage tank 6, and the other part of electric energy generated by the temperature difference power generation system 7 is stored in the storage battery 8, so that reasonable distribution and utilization of energy can be realized, and energy conservation and emission reduction are realized.
In one embodiment of the present application, the control method of a hydrogen engine system further includes: the PID controller is adopted to spray water through each water spray pipeline 62, the PID controller controls each water sprayer 621 to spray water to each cylinder 2 according to a preset target water spray proportion, water spray quantity actually entering each cylinder 2 and detected by each condensed water sensor 622 is obtained, and the PID controller adjusts the water spray quantity of each water sprayer 621 in real time according to the actual water spray quantity, so that the accurate control of the mixing proportion of air and condensed water entering each cylinder is achieved.
By adopting the control method, the distribution and the utilization of the exhaust energy can be adjusted according to the real-time monitored engine oil temperature, the influence on the performance of the engine caused by overhigh or overlow engine oil temperature is avoided, meanwhile, the distribution of the electric energy generated by the thermoelectric power generation system can be adjusted according to the residual electric quantity of the storage battery 8, and the reasonable distribution, the utilization and the recovery of the energy are realized. The control method adopts the PID controller to spray water through each water spray pipeline 62, can control the water spray quantity of each water sprayer 621 according to the preset target water spray proportion, and avoids that too little condensed water enters each cylinder, so that the cooling effect is not obvious or the performance of the engine is influenced by too much condensed water entering each cylinder.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A hydrogen engine system, comprising:
an air intake system (1);
the number of the cylinders (2) is at least one, the cylinders (2) are provided with at least one air inlet pipe (21) and at least one exhaust pipe (22), the cylinders (2) are communicated with the air inlet system (1) through the air inlet pipes (21), and the exhaust pipes (22) are communicated with an exhaust manifold (3);
-an exhaust system (4), the intake of which exhaust system (4) communicates with the exhaust manifold (3), the exhaust system (4) comprising a first exhaust line (41) and a second exhaust line (42);
a first heat exchanger (411), a first end of said first heat exchanger (411) being in communication with said first exhaust line (41);
a tail pipe system (5), a second end of the first heat exchanger (411) being in communication with the tail pipe system (5), the first heat exchanger (411) being for heating an oil pan of an engine;
an energy conversion tank (43), said energy conversion tank (43) being in communication with said second exhaust line (42), said energy conversion tank (43) being in communication with said tailpipe system (5);
a second heat exchanger (421), the second heat exchanger (421) disposed within the energy conversion tank (43);
a condensed water storage tank (6), wherein the condensed water storage tank (6) is provided with a water inlet pipeline (61) and a water spraying pipeline (62), the water inlet pipeline (61) is communicated with the energy conversion tank (43), the water spraying pipeline (62) is communicated with the air inlet pipe (21) of the cylinder (2), the water spraying pipeline (62) and the air inlet pipe (21) are arranged in a one-to-one correspondence manner, and the condensed water storage tank (6) is used for storing condensed water formed in the energy conversion tank (43);
a thermoelectric generation system (7), the thermoelectric generation system (7) exchanging heat with the second heat exchanger (421) to generate electrical energy;
the storage battery (8), the storage battery (8) is electrically connected with the thermoelectric generation system (7), and the storage battery (8) is used for storing electric energy generated by the thermoelectric generation system (7);
a pressure pump (9), a first end of the pressure pump (9) is communicated with the water inlet pipeline (61), a second end of the pressure pump (9) is electrically connected with at least one of the thermoelectric power generation system (7) and the storage battery (8), and the pressure pump (9) is used for driving condensed water in the water inlet pipeline (61) into the condensed water storage tank (6);
the first exhaust pipeline (41) is provided with a first valve structure (412), the second exhaust pipeline (42) is provided with a second valve structure (422), and the water inlet pipeline (61) is provided with a third valve structure (611).
2. A hydrogen engine system according to claim 1, characterized in that the thermoelectric generation system (7) is connected to the pressurizing pump (9) through a first switch (71), and the storage battery (8) is connected to the pressurizing pump (9) through a second switch (81).
3. A hydrogen engine system according to claim 2, characterized in that the number of the water injection lines (62) is plural, the number of the intake pipes (21) is plural, the plural water injection lines (62) are provided in one-to-one correspondence with the plural intake pipes (21), a water injector (621) is provided on each water injection line (62), and/or a condensed water sensor (622) is provided on each water injection line (62), the condensed water sensor (622) being used to detect the amount of water injection into each cylinder (2).
4. A hydrogen engine system according to claim 1, characterized in that the hydrogen engine system further comprises:
a temperature sensor (410), the temperature sensor (410) is connected with the oil pan, the temperature sensor (410) is used for detecting the temperature of the oil pan.
5. A vehicle comprising a hydrogen engine system, characterized in that the hydrogen engine system is a hydrogen engine system according to any one of claims 1 to 4.
6. A control method of a hydrogen engine system for controlling the hydrogen engine system according to claim 2 or claim 3, characterized by comprising the steps of:
when the oil temperature of the engine is less than or equal to a preset oil temperature lower limit value in the working process of the engine, closing the second valve structure (422), opening the first valve structure (412), and controlling the first heat exchanger (411) to heat an oil pan of the engine;
when the oil temperature is greater than the preset oil temperature lower limit value and less than a preset oil temperature upper limit value, opening the first valve structure (412) and the second valve structure (422) to control the first heat exchanger (411) to heat the oil pan of the engine;
when the engine oil temperature is higher than the preset engine oil temperature upper limit value, the second valve structure (422) is opened, the first valve structure (412) is closed, the first heat exchanger (411) is controlled to stop working, and the second heat exchanger (421) is controlled to be in a working state.
7. The method of claim 6, wherein the method comprises:
when the engine oil temperature is greater than the preset engine oil temperature upper limit value and the residual electric quantity of the storage battery (8) is less than or equal to the preset electric quantity lower limit value, controlling the third valve structure (611) to close, and controlling the thermoelectric power generation system (7) to work so that the thermoelectric power generation system (7) charges the storage battery (8);
when the residual electric quantity of the storage battery (8) is larger than the preset electric quantity lower limit value and smaller than the preset electric quantity upper limit value, controlling the third valve structure (611) to be opened, and controlling the thermoelectric generation system (7) to work, so that the thermoelectric generation system (7) charges the storage battery (8);
and when the residual electric quantity of the storage battery (8) is larger than the preset electric quantity upper limit value, controlling the third valve structure (611) to be opened, and controlling the thermoelectric power generation system (7) to stop working.
8. The method according to claim 7, characterized in that when the residual charge of the accumulator (8) is greater than the preset charge lower limit, a pressurizing pump (9) is controlled to drive condensed water into a condensed water storage tank (6), the method further comprising:
when the required power of the pressure pump (9) is larger than the power of the temperature difference power generation system, controlling a first switch (71) and a second switch (81) to be closed so that the storage battery (8) and the temperature difference power generation system (7) jointly supply electric energy to the pressure pump (9) to drive the condensed water into the condensed water storage tank (6);
when the required power of the pressure pump (9) is less than or equal to the power of the temperature difference power generation system, the second switch (81) is controlled to be switched off, and the first switch (71) is controlled to be switched on, so that the temperature difference power generation system (7) independently provides electric energy for the pressure pump (9).
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