Post-treatment device, method and equipment of hydrogen fuel internal combustion engine and vehicle

Abstract

The invention discloses an after-treatment device, method and equipment of a hydrogen fuel internal combustion engine and a vehicle, and relates to the field of tail gas treatment.The after-treatment device is characterized in that a first outlet of a three-way valve communicates with an inlet of a first reactor through a second gas guide pipeline, and a second outlet of the three-way valve communicates with an inlet of a second reactor through a third gas guide pipeline; an outlet of the first reactor is communicated with an inlet of the second reactor through a fourth gas guide pipeline, the first reactor and the second reactor are used for waste gas treatment, the concentration of a catalyst in the first reactor is increased in the waste gas flowing direction, and the three-way valve is used for closing the second outlet and conducting the first outlet in a high-concentration discharge state. The high-concentration discharge state is a state that the hydrogen concentration in the waste gas is greater than a safety threshold value. Based on the first reactor with the catalyst concentration increasing in the waste gas flowing direction, the first reactor firstly makes contact with waste gas in the high-concentration discharging state to inhibit the reaction activity, local excessive heat release is avoided, and the operation reliability of the aftertreatment device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, and in particular to a post-processing device, method, equipment and vehicle of a hydrogen fuel internal combustion engine. BACKGROUND

[0002] The hydrogen fuel internal combustion engine is an internal combustion engine that uses hydrogen fuel (such as hydrogen or hydrogen-containing compounds) as energy. Due to the risks of incomplete combustion of hydrogen fuel, participation of lubricating oil in combustion, and hydrogen fuel spillage during combustion, the hydrogen content or hydrocarbon content in the exhaust gas emitted by the hydrogen fuel internal combustion engine increases. Therefore, in order to avoid environmental pollution caused by the exhaust gas of the hydrogen fuel internal combustion engine, a post-processing device needs to be configured for the hydrogen fuel internal combustion engine to treat the exhaust gas.

[0003] The existing post-processing device is designed based on the composition of the exhaust gas of a traditional internal combustion engine. However, there is a large difference between the composition characteristics of the exhaust gas of the hydrogen fuel internal combustion engine and the exhaust gas of the traditional internal combustion engine, which causes the existing post-processing device to have the problem of local overheating and internal ablation after being adapted to the hydrogen fuel internal combustion engine, thereby reducing the operation reliability of the post-processing device. SUMMARY

[0004] In view of the above problems, the present application provides a post-processing device, method, equipment and vehicle of a hydrogen fuel internal combustion engine to achieve the purpose of improving the operation reliability of the post-processing device. The specific scheme is as follows:

[0005] The first aspect of the present application provides a post-processing device of a hydrogen fuel internal combustion engine, comprising:

[0006] a three-way valve, a first reactor, a second reactor, a first gas guide pipeline, a second gas guide pipeline, a third gas guide pipeline and a fourth gas guide pipeline; the inlet of the three-way valve is in communication with the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide pipeline, the first outlet of the three-way valve is in communication with the inlet of the first reactor through the second gas guide pipeline, the second outlet of the three-way valve is in communication with the inlet of the second reactor through the third gas guide pipeline, and the outlet of the first reactor is in communication with the inlet of the second reactor through the fourth gas guide pipeline;

[0007] The first reactor and the second reactor are used for exhaust gas treatment, and the catalyst concentration inside the first reactor increases along the flow direction of the exhaust gas.

[0008] The three-way valve is used to close the second outlet and open the first outlet in a high-concentration emission state, and the high-concentration emission state is a state in which the hydrogen concentration in the exhaust gas is greater than a safety threshold.

[0009] In one possible implementation, the first reactor is further configured to:

[0010] The first reactor is internally divided into multiple catalyst laying zones, wherein the catalyst activity in the catalyst laying zone located downstream of the exhaust gas flow is higher than the catalyst activity in the catalyst laying zone located upstream of the exhaust gas flow and adjacent to the catalyst laying zone.

[0011] In a possible implementation, the three-way valve is further configured to, in the non-high-concentration emission state, close the first outlet and open the second outlet.

[0012] In a possible implementation, the catalyst concentration in the second reactor decreases along the exhaust gas flow direction.

[0013] In a possible implementation, the catalyst concentration in the second reactor remains uniform along the exhaust gas flow direction.

[0014] In a possible implementation, the exhaust treatment device of the hydrogen fuel internal combustion engine further includes:

[0015] a hydrogen concentration sensor disposed in the first gas guide pipeline, and a signal output end of the hydrogen concentration sensor is electrically connected to the three-way valve;

[0016] The hydrogen concentration sensor is configured to collect the hydrogen concentration of the exhaust gas discharged from the exhaust port of the hydrogen fuel internal combustion engine.

[0017] The second aspect of the present application provides an exhaust treatment method of a hydrogen fuel internal combustion engine, applied to the exhaust treatment device of the hydrogen fuel internal combustion engine according to the first aspect or any implementation manner of the first aspect, and the exhaust treatment method of the hydrogen fuel internal combustion engine includes:

[0018] In the high-concentration emission state, the second outlet of the three-way valve is controlled to be closed, and the first outlet of the three-way valve is controlled to be open, wherein the catalyst concentration in the first reactor increases along the exhaust gas flow direction, the inlet of the first reactor is communicated with the first outlet through a second gas guide pipeline, the second outlet is communicated with the inlet of the second reactor through a third gas guide pipeline, and the outlet of the first reactor is communicated with the inlet of the second reactor through a fourth gas guide pipeline.

[0019] In a possible implementation, the exhaust treatment method of the hydrogen fuel internal combustion engine further includes:

[0020] In the non-high-concentration emission state, the first outlet is closed and the second outlet is open.

[0021] The third aspect of the present application provides an electronic device, including at least one processor and a memory connected to the processor, wherein:

[0022] The memory is configured to store a computer program.

[0023] The processor is configured to execute the computer program to enable the electronic device to implement the hydrogen fuel internal combustion engine aftertreatment method of the second aspect or any implementation manner of the second aspect.

[0024] The fourth aspect of the present application provides a vehicle comprising the hydrogen fuel internal combustion engine aftertreatment device of the first aspect or any implementation manner of the first aspect.

[0025] According to the above technical solution, the hydrogen fuel internal combustion engine aftertreatment device, method, equipment and vehicle provided by the present application are configured as follows: the inlet of the three-way valve is communicated with the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide pipeline, the first outlet of the three-way valve is communicated with the inlet of the first reactor through the second gas guide pipeline, the second outlet of the three-way valve is communicated with the inlet of the second reactor through the third gas guide pipeline, the outlet of the first reactor is communicated with the inlet of the second reactor through the fourth gas guide pipeline, and the three-way valve is configured to close the second outlet and open the first outlet in the high-concentration emission state, so that the exhaust gas with a higher hydrogen concentration first passes through the first reactor and then passes through the second reactor. Since the catalyst concentration inside the first reactor is configured to increase along the flow direction of the exhaust gas, the catalyst concentration contacted by the hydrogen after entering the inside of the first reactor is lower, thereby inhibiting the reaction intensity and reducing the heat generation. Moreover, as the catalyst concentration contacted by the exhaust gas flow gradually increases, the hydrogen concentration in the exhaust gas gradually decreases, further inhibiting the reaction intensity when the exhaust gas flows into the rear end of the first reactor and the second reactor. It can be seen that the present application improves the operation reliability of the aftertreatment device adapted to the hydrogen fuel internal combustion engine. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, same or similar reference numerals can represent same or similar elements. It should be understood that the drawings are schematic, and elements and features are not necessarily drawn to scale.

[0027] Figure 1 A structural schematic diagram of the hydrogen fuel internal combustion engine aftertreatment device provided by the present application;

[0028] Figure 2 A first reactor catalyst laying structure schematic diagram provided by the present application;

[0029] Figure 3 A heat release amount schematic diagram provided by the present application;

[0030] Figure 4 A first reactor multi-stage catalyst laying area structure schematic diagram provided by the present application;

[0031] Figure 5 Another heat release amount schematic diagram provided by the present application;

[0032] Figure 6 A flow chart of a post-processing method of a hydrogen fuel internal combustion engine provided for the present application;

[0033] Figure 7 A structural schematic diagram of an electronic device provided for the present application. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described below in conjunction with the accompanying drawings. The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0035] The embodiments of the present application are described below in conjunction with the accompanying drawings. It is known to those of ordinary skill in the art that, as technology develops and new scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0036] The terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is only a distinguishing way used in the description of the embodiments of the present application to describe the objects with the same attributes. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that the processes, methods, systems, products or devices containing a series of units do not have to be limited to those units, but can include other units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] It should be noted that, in actual application scenarios, the aftertreatment device of the hydrogen internal combustion engine provided in the present application improves the operation safety of the hydrogen fuel internal combustion engine system compared with the existing aftertreatment device. Specifically, the exhaust gas of the traditional internal combustion engine includes a large amount of nitrogen oxides, carbon oxides, hydrocarbons and particulate matters. Due to the complex chemical composition of the above-mentioned pollutants, the activity of the catalyst of the aftertreatment device is low when treating the pollutants in the exhaust gas. Therefore, in order to ensure the treatment efficiency of the pollutants under a single reactor configuration, the existing aftertreatment device usually reduces the catalyst laying density along the flow direction of the exhaust gas to ensure that the exhaust gas uniformly reacts with the catalyst in the process of flowing through the aftertreatment device. However, since the main component of the exhaust gas of the hydrogen fuel internal combustion engine is hydrogen and carbon oxides, the chemical composition of hydrogen is simpler than that of the exhaust gas of the traditional internal combustion engine, which makes the activity of the reaction between hydrogen and the catalyst higher than that of the traditional internal combustion engine exhaust gas. When the exhaust gas with high hydrogen concentration flows through the existing aftertreatment device, the catalyst concentration at the inlet of the existing aftertreatment device is the highest at this time, and the hydrogen in the exhaust gas will react violently with the catalyst at the inlet of the aftertreatment device, causing local overheating, thereby causing the risk of local ablation of the aftertreatment device, affecting the operation safety of the hydrogen fuel internal combustion engine system. The present application is configured with a three-way valve, the inlet of the three-way valve is communicated with the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide pipeline, the first outlet of the three-way valve is communicated with the inlet of the first reactor through the second gas guide pipeline, the second outlet of the three-way valve is communicated with the inlet of the second reactor through the third gas guide pipeline, the outlet of the first reactor is communicated with the inlet of the second reactor through the fourth gas guide pipeline, and the three-way valve is configured to close the second outlet and open the first outlet under high concentration emission state, so that the exhaust gas with high hydrogen concentration first passes through the first reactor and then passes through the second reactor. Since the catalyst concentration inside the first reactor is configured to increase along the flow direction of the exhaust gas, the hydrogen contacts the catalyst with low concentration after entering the first reactor, thereby inhibiting the reaction intensity and reducing the heat generation. Moreover, as the catalyst concentration contacted by the exhaust gas gradually increases, the hydrogen concentration in the exhaust gas gradually decreases, further inhibiting the reaction intensity when the exhaust gas flows into the rear end of the first reactor and the second reactor. It can be seen that the present application improves the operation reliability of the aftertreatment device adapted to the hydrogen fuel internal combustion engine.

[0038] The first aspect of the present application provides an aftertreatment device for a hydrogen fuel internal combustion engine, as shown in the figure, the aftertreatment device for the hydrogen fuel internal combustion engine comprises: Figure 1 The first aspect of the present application provides an aftertreatment device for a hydrogen fuel internal combustion engine, as shown in the figure, the aftertreatment device for the hydrogen fuel internal combustion engine comprises:

[0039] Three-way valve 101, first reactor 102, second reactor 103, first gas guide pipeline 104, second gas guide pipeline 105, third gas guide pipeline 106 and fourth gas guide pipeline 107; the inlet of the three-way valve 101 is communicated with the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide pipeline 104, the first outlet of the three-way valve 101 is communicated with the inlet of the first reactor 102 through the second gas guide pipeline 105, the second outlet of the three-way valve 101 is communicated with the inlet of the second reactor 103 through the third gas guide pipeline 106, and the outlet of the first reactor 102 is communicated with the inlet of the second reactor 103 through the fourth gas guide pipeline 107;

[0040] The first reactor 102 and the second reactor 103 are used for exhaust gas treatment, and the catalyst concentration inside the first reactor 102 increases along the exhaust gas flow direction;

[0041] The three-way valve 101 is used to close the second outlet and open the first outlet in the high concentration discharge state, and the high concentration discharge state is a state in which the hydrogen concentration in the exhaust gas is greater than the safety threshold.

[0042] It should be noted that in actual application scenarios, the above-mentioned way that the outlet of the first reactor 102 is communicated with the inlet of the second reactor 103 through the fourth gas guide pipeline 107 has many forms, for example, two inlets are arranged in the second reactor 103, and the third gas guide pipeline 106 and the fourth gas guide pipeline 107 are connected respectively; or a three-way valve is additionally arranged at the inlet of the second reactor 103, the first inlet of the three-way valve is communicated with the third gas guide pipeline 106, the second inlet of the three-way valve is communicated with the fourth gas guide pipeline 107, and the outlet of the three-way valve is communicated with the inlet of the second reactor 103; or as shown in Figure 1 , the gas outlet end of the fourth gas guide pipeline 107 is bypassed to the third gas guide pipeline 106.

[0043] It should be noted that in actual application scenarios, the above-mentioned first reactor 102 and second reactor 103 are reactor devices that are internally coated with catalysts to catalytically treat pollutants (such as hydrogen, hydrocarbons, carbon oxides, etc.) in the exhaust gas. The appearance shape of the above-mentioned first reactor 102 and second reactor 103 is subject to the need for catalyst coating in this scheme, such as a cylinder, a cube, an oval body, a tower type, etc., and this application does not make too much description on the appearance shape of the above-mentioned first reactor 102 and second reactor 103.

[0044] It should be noted that in actual application scenarios, the above-mentioned catalyst coating method inside the first reactor 102 can have many forms, and one is exemplarily provided as shown in Figure 2 , which is a first reactor catalyst coating structure schematic diagram. For the convenience of description, in Figure 2The catalyst is partitioned into a first partition, a second partition, and a third partition. The catalyst types in the first partition, the second partition, and the third partition are the same, but the concentrations gradually increase along the flow direction of the exhaust gas (e.g. Figure 2 the arrow direction), i.e., the catalyst concentration （第一分区） < catalyst concentration （第二分区） < catalyst concentration （第三分区） .

[0045] It should be noted that after the simulation test of the first reactor 102 using the laying mode shown in FIG. Figure 2 , the heat release diagram is shown in FIG. Figure 3 . Figure 3 In the coordinate system, the horizontal coordinate represents different partitions (i.e., the first partition, the second partition, and the third partition) of the first reactor 102, and the vertical coordinate represents the heat release. Figure 3 In the coordinate system, the dashed curve represents the heat release of a reactor of an existing aftertreatment device that has the same size and catalyst type as the first reactor 102 that is subjected to the simulation test, Figure 3 In the coordinate system, the solid curve represents the heat release of the first reactor 102. As can be seen from FIG. Figure 3 , since the catalyst concentration in the reactor of the existing aftertreatment device decreases along the flow direction of the exhaust gas, the reaction intensity in the first partition is the highest, and the heat release is also the highest. Subsequently, since the hydrogen in the exhaust gas is largely consumed in the first partition, and the catalyst concentrations in the second and third partitions of the reactor of the existing aftertreatment device are lower than the catalyst concentration at the inlet, the reaction intensity in the second and third partitions is relatively low, and the heat release continuously decreases. At the same time, since the catalyst concentrations in the second and third partitions of the reactor of the existing aftertreatment device gradually decrease, the treatment effect on the pollutants in the exhaust gas decreases. Since the hydrogen concentration in the exhaust gas entering the first partition of the first reactor 102 is high, and the catalyst concentration in the first partition is the lowest, although the heat release in the first partition is large, it is still lower than the heat release in the first partition of the reactor of the existing aftertreatment device, thereby avoiding the risk of local high temperature at the inlet of the first reactor causing ablation. At the same time, since the catalyst concentrations in the second and third partitions of the first reactor 102 increase in turn, the treatment effect of the second and third partitions of the first reactor 102 on the pollutants in the exhaust gas is ensured.

[0046] It should be noted that in actual application scenarios, there are many reasons for the above high concentration emission state, including but not limited to: misfire in the cylinder, failure of the hydrogen injector, abnormality of the ignition system, etc. The above high concentration emission state can be realized by monitoring the prompt signal of the Electronic Control Unit (ECU) indicating that the misfire in the cylinder, the failure of the hydrogen injector, the abnormality of the ignition system, etc. cause the hydrogen concentration of the exhaust gas to rise.

[0047] It should be noted that in actual application scenarios, the hydrogen fuel used by the above hydrogen fuel internal combustion engine can be hydrogen or a hydrogen-containing compound, and the types of hydrogen-containing compounds include but are not limited to: methanol, natural gas, liquid ammonia, etc.

[0048] The present application is configured to communicate the inlet of the three-way valve with the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide pipeline, the first outlet of the three-way valve is communicated with the inlet of the first reactor through the second gas guide pipeline, the second outlet of the three-way valve is communicated with the inlet of the second reactor through the third gas guide pipeline, and the outlet of the first reactor is communicated with the inlet of the second reactor through the fourth gas guide pipeline. The three-way valve is configured to close the second outlet and open the first outlet in the high concentration emission state, so that the exhaust gas with high hydrogen concentration first passes through the first reactor and then passes through the second reactor. Since the catalyst concentration inside the first reactor is configured to increase along the flow direction of the exhaust gas, the catalyst concentration contacted by hydrogen gas after entering the inside of the first reactor is low, thereby inhibiting the reaction intensity and reducing the heat generation. And, as the catalyst concentration contacted by the exhaust gas flow gradually increases, the hydrogen concentration in the exhaust gas gradually decreases, further inhibiting the reaction intensity when the exhaust gas flows into the downstream end of the first reactor and the second reactor. It can be seen that the present application improves the operation reliability of the aftertreatment device adapted to the hydrogen fuel internal combustion engine.

[0049] In one possible implementation, the first reactor 102 is further configured to:

[0050] The first reactor 102 is divided into multiple catalyst laying zones inside, wherein the catalyst activity in the catalyst laying zone located downstream of the exhaust gas flow is higher than the catalyst activity in the catalyst laying zone located upstream of the exhaust gas flow and adjacent to the catalyst laying zone.

[0051] It should be noted that in actual application scenarios, there are many ways to divide the first reactor 102 into multiple catalyst laying zones inside, one of which is provided here as an example: as shown in Figure 4 The structure diagram of the first reactor multi-section catalyst laying zone is shown. The internal region of the first reactor 102 is divided into 4 catalyst laying zones, and the catalyst activity （1段） Catalyst activity （2段） Catalyst activity （3段） Catalyst activity （4段） .

[0052] It should be noted that, after review by the researchers of this application, the above-mentioned methods have been adopted. Figure 4 After simulation tests were conducted on the first reactor 102 with the laying method shown, it was found that its heat release diagram is as follows: Figure 5 As shown. Figure 5 The horizontal axis of the coordinate system represents the different catalyst placement sections (i.e., section 1, section 2, section 3 and section 4) of the first reactor 102, and the vertical axis represents the heat release. Figure 5 The dashed curve represents the heat release of the reactor in an existing post-treatment device that is the same size and has the same catalyst type as the first reactor 102 used in the simulation test. Figure 5 The solid curve characterizes the heat release of the first reactor 102. (From...) Figure 5 It is known that, due to the decreasing catalyst concentration along the exhaust gas flow direction in the existing aftertreatment device reactor, the reaction intensity and heat release are highest in the corresponding region of section 1. Subsequently, because a large amount of hydrogen in the exhaust gas is consumed in section 1 at the inlet, and the catalyst concentration in the corresponding regions of sections 2, 3, and 4 of the existing aftertreatment device reactor is lower than that at the inlet, the reaction intensity and heat release of the exhaust gas in these regions are lower, and the heat release continues to decrease. Simultaneously, the gradual decrease in catalyst concentration in the corresponding regions of sections 2, 3, and 4 of the existing aftertreatment device reactor leads to a decline in its treatment effect on pollutants in the exhaust gas. Furthermore, the lowest catalyst activity in section 1 results in lower heat release. Conversely, the gradually increasing catalyst activity in sections 2, 3, and 4 leads to a gradual increase in the reaction intensity between the exhaust gas and the catalyst as it flows through these sections, resulting in a corresponding increase in heat release. During this process, the pollutants in the exhaust gas fully react with the catalyst, ensuring the effective treatment of the pollutants in the exhaust gas. Furthermore, as the exhaust gas flows through stages 1, 2, and 3, hydrogen is continuously consumed by the catalyst. Although a significant amount of heat is released in stage 4, the final heat release is significantly lower than the maximum heat release of the existing post-treatment reactor due to the decrease in hydrogen concentration. This avoids the risk of localized high temperatures leading to ablation in the first reactor.

[0053] In one possible implementation, the three-way valve is also used to close the first outlet and open the second outlet when the emission concentration is not high.

[0054] It should be noted that in practical application scenarios, this application configures a three-way valve to close the first outlet and open the second outlet in non-high concentration emission states, thereby allowing the exhaust gas to flow directly into the second reactor 103. This extends the service life of the first reactor 102 while reducing exhaust resistance and increasing the exhaust gas treatment throughput.

[0055] In one possible implementation, the catalyst concentration inside the second reactor decreases along the direction of exhaust gas flow.

[0056] It should be noted that, under high-concentration emission conditions, the concentrations of hydrogen and other pollutants in the exhaust gas have decreased after treatment in the first reactor 102. Therefore, this application improves the treatment efficiency of residual pollutants in the exhaust gas by configuring the catalyst concentration inside the second reactor to decrease along the exhaust gas flow direction, thereby avoiding localized high temperatures at the inlet of the second reactor. Furthermore, the gradual decrease in catalyst concentration reduces the production cost of the second reactor.

[0057] In one possible implementation, the catalyst concentration inside the second reactor remains uniform along the direction of exhaust gas flow.

[0058] It should be noted that, under high-concentration emission conditions, the concentrations of hydrogen and other pollutants in the exhaust gas have decreased after treatment by the first reactor 102. Therefore, this application improves the treatment efficiency of residual pollutants in the exhaust gas by configuring the catalyst concentration inside the second reactor to remain uniform along the exhaust gas flow direction, thereby avoiding localized high temperatures at the inlet of the second reactor.

[0059] In one possible implementation, the aftertreatment device for the hydrogen fuel cell internal combustion engine provided in the first aspect of this application further includes:

[0060] A hydrogen concentration sensor is deployed in the first gas delivery line 104, and the signal output terminal of the hydrogen concentration sensor is electrically connected to the three-way valve.

[0061] Hydrogen concentration sensors are used to collect the hydrogen concentration in the exhaust gas emitted from the exhaust port of a hydrogen fuel cell internal combustion engine.

[0062] It should be noted that, in practical applications, this application deploys a hydrogen concentration sensor in the first gas guide pipe 104 and configures the signal output terminal of the hydrogen concentration sensor to be electrically connected to the three-way valve. This allows the three-way valve to control the opening and closing of the outlet based on the hydrogen concentration of the exhaust gas discharged from the exhaust port of the hydrogen fuel internal combustion engine collected by the hydrogen concentration sensor. Compared with the method of monitoring the prompt signal feedback from the electronic control unit, this avoids the problem of delayed response of the three-way valve due to the delay in the transmission of the prompt signal, and improves the treatment effect and accuracy of the aftertreatment device for exhaust gas.

[0063] A second aspect of this application provides an aftertreatment method for a hydrogen fuel cell internal combustion engine, applied to an aftertreatment apparatus for a hydrogen fuel cell internal combustion engine as described in the first aspect or any implementation thereof. The aftertreatment method for the hydrogen fuel cell internal combustion engine includes:

[0064] In the high-concentration emission state, the second outlet of the control three-way valve is closed, and the first outlet of the control three-way valve is conducted, wherein the catalyst concentration in the first reactor increases along the direction of the exhaust gas flow, the inlet of the first reactor is communicated with the first outlet through the second gas guide pipeline, the second outlet is communicated with the inlet of the second reactor through the third gas guide pipeline, and the outlet of the first reactor is communicated with the inlet of the second reactor through the fourth gas guide pipeline.

[0065] In a possible implementation, the aftertreatment method of the hydrogen fuel internal combustion engine provided in the second aspect of the present application further includes:

[0066] In the non-high-concentration emission state, the first outlet is closed, and the second outlet is conducted.

[0067] It should be noted that in actual application scenarios, there are various implementation manners of the aftertreatment method of the hydrogen fuel internal combustion engine provided in the second aspect of the present application and any implementation manner of the second aspect, and one of the implementation manners is exemplarily provided herein:

[0068] As shown in FIG. 1, it is a flowchart of an aftertreatment method of a hydrogen fuel internal combustion engine, and the specific operation steps are as follows: Figure 6

[0069] In step S601, the collection parameter at the current detection time is obtained, and step S602 is triggered.

[0070] In a possible implementation, the collection parameter in the above step S601 can be the hydrogen concentration collected by the hydrogen concentration sensor arranged in the first gas guide pipeline, or the hydrogen internal combustion engine abnormal state prompt information sent by the ECU.

[0071] In step S602, it is determined whether the collection parameter is in a high-concentration emission state. If yes, step S603 is triggered, and if no, step S604 is triggered.

[0072] In a possible implementation, if the collection parameter is the hydrogen concentration in the first gas guide pipeline exhaust gas, the implementation manner of the above step S602 can be that it is determined whether the hydrogen concentration is greater than a safety threshold value. If yes, the determination result that the collection parameter is in a high-concentration emission state is output, and if no, the determination result that the collection parameter is in a non-high-concentration emission state is output.

[0073] In another possible implementation, if the collection parameter is the hydrogen internal combustion engine abnormal state prompt information, the implementation manner of the above step S602 can include the following steps A1 to A4.

[0074] In step A1, the abnormal type of the hydrogen internal combustion engine abnormal state prompt information is read, and step A2 is triggered.

[0075] ​Step A2: Determine whether the anomaly type read in step A1 is an anomaly type in the high-concentration emission status type table. If yes, trigger step A3; otherwise, trigger step A4.

[0076] Step A3: Output the judgment result of being in a high-concentration emission state.

[0077] Step A4: Output the judgment result that the emission is in a non-high concentration state.

[0078] Step S603: Control the first outlet of the three-way valve to open and the second outlet to close.

[0079] Step S604: Control the first outlet of the three-way valve to close and the second outlet to open.

[0080] A third aspect of this application provides an electronic device, including at least one processor and a memory connected to the processor, wherein:

[0081] Memory is used to store computer programs;

[0082] The processor is used to execute computer programs to enable electronic devices to implement the after-processing method of a hydrogen fuel cell internal combustion engine as described in the second aspect or any implementation thereof.

[0083] This application also provides an electronic device in its embodiments. (See reference...) Figure 7 The diagram illustrates a structural schematic suitable for implementing the electronic device in the embodiments of this application. The electronic device in the embodiments of this application may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0084] like Figure 7 As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage device 708 into a random access memory (RAM) 703. When the electronic device is powered on, the RAM 703 also stores various programs and data required for the operation of the electronic device. The processing unit 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0085] In general, the following devices can be connected to the I / O interface 705: input devices 706 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, and the like; output devices 707 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, and the like; storage devices 708 including, for example, a memory card, a hard disk, and the like; and communication devices 709. The communication devices 709 can allow the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 7 An electronic device having various devices is shown, but it is understood that all of the shown devices are not required to be implemented or present. More or fewer devices can alternatively be implemented or present.

[0086] The embodiments of the present application also provide a computer program product comprising computer readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the aftertreatment methods of hydrogen fuel internal combustion engines provided by the embodiments of the present application.

[0087] The embodiments of the present application also provide a computer readable storage medium carrying one or more computer programs, which, when executed by an electronic device, can cause the electronic device to implement any of the aftertreatment methods of hydrogen fuel internal combustion engines provided by the embodiments of the present application.

[0088] The fourth aspect of the present application provides a vehicle comprising the aftertreatment device of the hydrogen fuel internal combustion engine according to the first aspect or any implementation manner of the first aspect.

[0089] In addition, it should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments. In addition, the device embodiments provided by the present application in the drawings represent that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0090] Those skilled in the art can clearly understand that the application can be implemented by means of software plus necessary universal hardware, and of course can also be implemented by means of dedicated hardware including special integrated circuit, special CPU, special memory, special component, etc. Generally, any function completed by computer program can be easily implemented by corresponding hardware, and the specific hardware structure for implementing the same function can also be various, such as analog circuit, digital circuit or special circuit, etc. However, for the application, software program implementation is a better embodiment. Based on such understanding, the technical solution of the application or the part of the application which makes contribution to the prior art can be embodied in the form of software product, which is stored in readable storage medium, such as computer floppy disk, U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a plurality of instructions for making a computer device (which can be personal computer, training device or network device, etc.) execute the method described in various embodiments of the application.

[0091] In the above embodiments, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the implementation can be achieved in the form of a computer program product, entirely or partially.

[0092] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the flow or function described in the embodiments of the application is generated entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, for example, the computer instructions can be transmitted from one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be stored by the computer or a data storage device such as training device, data center, etc. integrated with one or more available media sets. The available medium can be magnetic medium (such as floppy disk, hard disk, magnetic tape), optical medium (such as DVD) or semiconductor medium (such as solid state disk (SSD)) etc.

Claims

1. An aftertreatment device for a hydrogen fuel cell internal combustion engine, characterized in that, include: The system comprises a three-way valve (101), a first reactor (102), a second reactor (103), a first gas guide line (104), a second gas guide line (105), a third gas guide line (106), and a fourth gas guide line (107). The inlet of the three-way valve (101) is connected to the exhaust port of the hydrogen fuel internal combustion engine through the first gas guide line (104). The first outlet of the three-way valve (101) is connected to the inlet of the first reactor (102) through the second gas guide line (105). The second outlet of the three-way valve (101) is connected to the inlet of the second reactor (103) through the third gas guide line (106). The outlet of the first reactor (102) is connected to the inlet of the second reactor (103) through the fourth gas guide line (107). The first reactor (102) and the second reactor (103) are used for waste gas treatment, and the catalyst concentration inside the first reactor (102) increases along the waste gas flow direction; The three-way valve (101) is used to close the second outlet and open the first outlet in a high-concentration emission state, where the hydrogen concentration in the exhaust gas is greater than the safety threshold.

2. The aftertreatment device for a hydrogen fuel cell internal combustion engine according to claim 1, characterized in that, The first reactor (102) is also configured to: The first reactor (102) is divided into multiple catalyst laying zones. The catalyst activity in the catalyst laying zone located downstream of the waste gas flow is higher than that in the catalyst laying zone located upstream of the waste gas flow and adjacent to the catalyst laying zone.

3. The aftertreatment device for a hydrogen fuel cell internal combustion engine according to claim 1, characterized in that, The three-way valve (101) is also used to close the first outlet and open the second outlet when the emission concentration is not high.

4. The aftertreatment device for a hydrogen fuel cell internal combustion engine according to claim 1, characterized in that, The catalyst concentration inside the second reactor (103) decreases along the direction of exhaust gas flow.

5. The aftertreatment device for a hydrogen fuel cell internal combustion engine according to claim 1, characterized in that, The catalyst concentration inside the second reactor (103) remains uniform along the direction of exhaust gas flow.

6. The aftertreatment device for a hydrogen fuel cell internal combustion engine according to claim 1, characterized in that, The aftertreatment device for the hydrogen fuel cell internal combustion engine also includes: A hydrogen concentration sensor is deployed in the first gas delivery line (104), and the signal output terminal of the hydrogen concentration sensor is electrically connected to the three-way valve (101). The hydrogen concentration sensor is used to collect the hydrogen concentration in the exhaust gas discharged from the exhaust port of the hydrogen fuel internal combustion engine.

7. An aftertreatment method for a hydrogen fuel cell internal combustion engine, characterized in that, An aftertreatment device for a hydrogen fuel cell internal combustion engine as described in any one of claims 1 to 6, wherein the aftertreatment method for the hydrogen fuel cell internal combustion engine comprises: Under high-concentration emission conditions, the second outlet of the three-way valve (101) is closed, and the first outlet of the three-way valve (101) is opened. The catalyst concentration inside the first reactor (102) increases along the direction of exhaust gas flow. The inlet of the first reactor (102) is connected to the first outlet through the second gas guide pipe (105). The second outlet is connected to the inlet of the second reactor (103) through the third gas guide pipe (106). The outlet of the first reactor (102) is connected to the inlet of the second reactor (103) through the fourth gas guide pipe (107).

8. The aftertreatment method for a hydrogen fuel cell internal combustion engine according to claim 7, characterized in that, The aftertreatment method for the hydrogen fuel cell internal combustion engine also includes: Under non-high concentration emission conditions, close the first outlet and open the second outlet.

9. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program to enable the electronic device to implement the after-processing method for a hydrogen fuel cell internal combustion engine as described in any one of claims 7 to 8.

10. A vehicle, characterized in that, The aftertreatment device for a hydrogen fuel cell internal combustion engine as described in any one of claims 1 to 6.

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