Air inlet hydrogenation device and engine bench test system
By combining an electrolyzer and a control unit, instantaneous hydrogen production and controllable hydrogen flow rate are achieved, solving the problems of high cost and safety risks associated with hydrogen circuits and hydrogen consumption meters in existing technologies, and providing a safe and reliable hydrogen mixing control scheme.
Patent Information
- Application Number
- CN202520008434.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-02
AI Technical Summary
The existing technology for adding hydrogen circuits and hydrogen consumption meters in engine laboratories is costly and poses safety risks, especially when low concentrations of hydrogen are mixed in, making hydrogen storage and use unsafe.
The system employs a combination of an electrolytic water generator, an adjustable DC regulated power supply, and a control unit. By using a pressure acquisition element to feedback control the power supply, it achieves real-time hydrogen production and regulates the hydrogen flow rate. Combined with a sealed water tank, it prevents gas backflow and reduces safety risks.
It enables instantaneous hydrogen production and controllable hydrogen flow, ensuring safety and reliability while reducing safety risks. It is suitable for controlling hydrogen mixing amounts from 0 to 1000 ppm, improving the safety and controllability of laboratory engine intake.
Smart Images
Figure CN223549349U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of laboratory engine control technology, and in particular to an intake hydrogen refueling device and an engine bench testing system. Background Technology
[0002] Against the backdrop of national energy conservation and carbon reduction, some laboratories are studying the effects of adding hydrogen to engines with different fuels on combustion and emissions, aiming to improve engine combustion efficiency by enhancing combustion.
[0003] Currently, engine laboratories typically use a method of adding hydrogen refueling lines and hydrogen consumption meters to precisely control the amount of hydrogen mixed in. Because hydrogen cylinders operate at high pressures, hydrogen embrittlement must be considered during storage and use. Furthermore, adding hydrogen refueling lines and hydrogen consumption meters places higher demands on laboratory safety. For hydrogen mixing levels below 1000 ppm, the hydrogen refueling line and hydrogen consumption meter solution is costly and poses significant risks during use. Utility Model Content
[0004] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above, and to provide an intake gas hydrogenation device capable of instantaneous hydrogen production with controllable hydrogen production rate.
[0005] To achieve the above objectives, the present disclosure adopts the following technical solution:
[0006] According to one aspect of this disclosure, an intake hydrogen refueling device is provided for engine bench testing, wherein the intake hydrogen refueling device includes a water electrolyzer, a power supply, and a control unit; the water electrolyzer generates hydrogen gas, and its outlet is connected to the engine bench testing equipment via a pipeline; the water electrolyzer is equipped with a pressure acquisition element for measuring the pressure information of the water electrolyzer; the power supply is electrically connected to the water electrolyzer for supplying power to the water electrolyzer; the control unit is connected to both the pressure acquisition element and the power supply, and the control unit is used to perform feedback control on the power supply based on the pressure information to adjust the operating state of the water electrolyzer.
[0007] According to one embodiment of this disclosure, the power supply is an adjustable DC regulated power supply.
[0008] According to one embodiment of this disclosure, the adjustable DC regulated power supply has an output voltage range of 0–48V and an output power range of 0–24W.
[0009] According to one embodiment of this disclosure, the intake hydrogenation device further includes a sealed water tank, which is connected to the outlet of the water electrolysis generator via a first pipeline and to an engine bench test device via a second pipeline; wherein, one end of the first pipeline connected to the sealed water tank extends into the sealed water tank and is located below its liquid surface, and one end of the second pipeline connected to the sealed water tank is located above the liquid surface.
[0010] According to one embodiment of this disclosure, the sealed water tank is made of a transparent material.
[0011] According to one embodiment of this disclosure, a first valve group is provided on the first pipeline, the first valve group being used to control the opening and closing of the first pipeline and to regulate the flow rate of the first pipeline.
[0012] According to one embodiment of this disclosure, a second valve group is provided on the second pipeline, the second valve group being used to control the on / off state of the second pipeline and to regulate the flow rate of the second pipeline.
[0013] According to one embodiment of this disclosure, a one-way valve is provided on the second pipeline, and the flow direction of the one-way valve is the direction of outflow from the sealed water tank.
[0014] According to one embodiment of this disclosure, the engine bench test equipment includes an engine combustion chamber, an engine intake manifold, and an engine intake filter. The gas flow direction of the engine bench test equipment is from the engine intake filter into the engine combustion chamber via the engine intake manifold. The outlet of the electrolyzed water generator is connected to the position between the engine intake filter and the engine intake manifold via a pipeline.
[0015] Another primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above and to provide an engine bench testing system.
[0016] To achieve the above objectives, the present disclosure adopts the following technical solution:
[0017] According to one aspect of this disclosure, an engine bench testing system is provided, comprising engine bench testing equipment and an intake hydrogen refueling device as proposed in this disclosure and described in the above embodiments.
[0018] As can be seen from the above technical solution, the advantages and positive effects of the inlet hydrogen refueling device and engine bench test system proposed in this disclosure are as follows:
[0019] The hydrogen inlet device disclosed herein includes a water electrolyzer, a power supply, and a control unit. The water electrolyzer generates hydrogen, and its outlet is connected to an engine bench test apparatus via a pipeline. The water electrolyzer is equipped with a pressure acquisition element for measuring the pressure information of the water electrolyzer. The power supply is electrically connected to the water electrolyzer to supply power. The control unit is connected to both the pressure acquisition element and the power supply, and is used to perform feedback control of the power supply based on the pressure information to adjust the operating state of the water electrolyzer. Through the above structural design, this disclosure enables real-time hydrogen production using the water electrolyzer, and transmits the pressure information collected by the pressure acquisition element to the control unit, allowing the control unit to perform feedback control of the power supply based on the pressure information, thereby regulating the hydrogen production rate. Attached Figure Description
[0020] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:
[0021] Figure 1 This is a system schematic diagram of an engine bench test system according to an exemplary embodiment.
[0022] The annotations in the attached figures are explained as follows:
[0023] 110. Electrolyzed water generator;
[0024] 111. Pressure acquisition element;
[0025] 120. Power supply;
[0026] 130. Sealed water tank;
[0027] 131. Liquid surface;
[0028] 140. First pipeline;
[0029] 141. First valve group;
[0030] 150. Second pipeline;
[0031] 151. Second valve assembly;
[0032] 152. Check valve;
[0033] 210. Engine combustion chamber;
[0034] 220. Engine intake manifold;
[0035] 230. Engine intake air filter. Detailed Implementation
[0036] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are illustrative in nature and not intended to limit this disclosure.
[0037] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.
[0038] See Figure 1 The illustration represents a schematic diagram of the engine bench test system proposed in this disclosure. In this exemplary embodiment, the intake hydrogenation device proposed in this disclosure is described as an example of an engine bench test system that mixes a trace amount (0–0.1% by mass) of hydrogen into the engine intake air. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below to apply the relevant designs of this disclosure to other types of engine bench test systems; these changes remain within the scope of the principles of the intake hydrogenation device proposed in this disclosure.
[0039] like Figure 1As shown, in one embodiment of this disclosure, the proposed intake hydrogenation device includes a water electrolyzer 110, a power supply 120, and a control unit. The water electrolyzer 110 generates hydrogen gas, and its outlet is connected to an engine bench test apparatus via a pipeline. The water electrolyzer 110 is equipped with a pressure acquisition element 111 for measuring the pressure information of the water electrolyzer 110. The power supply 120 is electrically connected to the water electrolyzer 110 and supplies power to it. The control unit is connected to both the pressure acquisition element 111 and the power supply 120. The control unit provides feedback control to the power supply 120 based on the pressure information to adjust the operating state of the water electrolyzer 110, for example, automatically controlling the operation and shutdown of the power supply 120 based on the pressure within the water electrolyzer 110. Through the above structural design, this disclosure enables instantaneous hydrogen production using the water electrolyzer 110. The pressure information collected by the pressure acquisition element 111 from the water electrolyzer 110 is transmitted to the control unit, allowing the control unit to perform feedback control on the power supply 120 based on the pressure information, thereby regulating the hydrogen production rate. Specifically, the hydrogen inlet mixing device proposed in this disclosure has a fast reaction time, controllable hydrogen flow rate, and rapid adjustment response. It can control the hydrogen mixing inlet gas of a laboratory engine within the range of 0–1000 ppm, and hydrogen is produced as needed, reducing safety risks and ensuring safe and reliable operation.
[0040] In one embodiment of this disclosure, the power supply 120 can be an adjustable DC regulated power supply. Accordingly, this disclosure controls the amount of hydrogen produced by adjusting the voltage and output power of the adjustable DC regulated power supply.
[0041] It should be noted that, in one embodiment of this disclosure, the control unit may be the control section of the power supply 120 itself, which has an automatic adjustment function. Taking an adjustable DC regulated power supply as an example, the control unit may be the control unit integrated within the adjustable DC regulated power supply itself. In other embodiments of this disclosure, the control unit may also be a control section additionally arranged relative to the power supply 120, and is not limited to this embodiment.
[0042] Based on the design of power supply 120 as an adjustable DC regulated power supply, in one embodiment of this disclosure, the output voltage range of the adjustable DC regulated power supply can be 0 to 48V, and the output power range can be 0 to 24W.
[0043] In one embodiment of this disclosure, the pressure acquisition element 111 can be a pressure gauge. Accordingly, the pressure gauge can provide pressure information to the control unit for controlling the power supply 120, so that the control unit can control the power supply 120 to start and stop automatically.
[0044] like Figure 1As shown, in one embodiment of this disclosure, the intake hydrogenation device may further include a sealed water tank 130. The sealed water tank 130 is connected to the outlet of the water electrolysis generator 110 via a first pipe 140, and the sealed water tank 130 is connected to an engine bench test device via a second pipe 150. Specifically, one end of the first pipe 140 connected to the sealed water tank 130 extends into the sealed water tank 130 and is located below its liquid surface 131, while one end of the second pipe 150 connected to the sealed water tank 130 is located above the liquid surface 131. Through this structural design, this disclosure utilizes the design of the sealed water tank 130, specifically the relationship between the ends of the first pipe 140 and the second pipe 150 extending into the sealed water tank 130 and the liquid surface 131 of the sealed water tank 130, to prevent gas backflow and flame backflow, thereby reducing the safety risks caused by engine backfire.
[0045] Based on the design of the hydrogen inlet device including a sealed water tank 130, in one embodiment of this disclosure, the sealed water tank 130 can be made of a transparent material. Through this design, this disclosure allows users to observe the amount of hydrogen produced inside the sealed water tank 130 (specifically, the bubbles generated below the liquid surface 131 of the sealed water tank 130 after the hydrogen generated by the water electrolysis generator 110 is transported to the sealed water tank 130 via the first pipeline 140).
[0046] like Figure 1 As shown, based on the design of the gas intake hydrogenation device including a sealed water tank 130 and the sealed water tank 130 being connected to the water electrolysis generator 110 via a first pipeline 140, in one embodiment of this disclosure, a first valve assembly 141 may be provided on the first pipeline 140. The first valve assembly 141 is used to control the on / off state of the first pipeline 140 and to regulate the flow rate of the first pipeline 140. Specifically, the first valve assembly 141 may be, for example, but not limited to, a gate valve.
[0047] like Figure 1 As shown, based on the design of the intake hydrogenation device including a sealed water tank 130 and the sealed water tank 130 being connected to the engine bench test equipment via a second pipeline 150, in one embodiment of this disclosure, a second valve assembly 151 may be provided on the second pipeline 150. This second valve assembly 151 is used to control the on / off state of the second pipeline 150 and to regulate the flow rate of the second pipeline 150. Specifically, the second valve assembly 151 may be, for example, but not limited to, a ball valve.
[0048] like Figure 1 As shown, based on the design of the intake hydrogen refueling device including a sealed water tank 130 and the sealed water tank 130 being connected to the engine bench test equipment via a second pipeline 150, in one embodiment of this disclosure, a one-way valve 152 may be provided on the second pipeline 150, the flow direction of the one-way valve 152 being the direction of outflow from the sealed water tank 130.
[0049] like Figure 1 As shown, in one embodiment of this disclosure, the engine bench test equipment includes an engine combustion chamber 210, an engine intake manifold 220, and an engine intake filter element 230. The gas flow direction of the engine bench test equipment is from the engine intake filter element 230 into the engine combustion chamber 210 via the engine intake manifold 220. Furthermore, the outlet of the water electrolysis generator 110 is connected via a pipeline to the location between the engine intake filter element 230 and the engine intake manifold 220.
[0050] It should be noted that the intake hydrogenation apparatus shown in the accompanying drawings and described in this specification are merely a few examples among many intake hydrogenation apparatuses capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the intake hydrogenation apparatus shown in the accompanying drawings or described in this specification.
[0051] Based on the detailed description of several exemplary embodiments of the intake hydrogenation device proposed in this disclosure above, an exemplary embodiment of the engine bench test system proposed in this disclosure will be described below.
[0052] According to one aspect of this disclosure, an engine bench test system is provided, comprising engine bench test equipment and an intake hydrogen refueling device as described in the above embodiments.
[0053] It should be noted that the engine bench test systems shown in the accompanying drawings and described in this specification are merely a few examples of many engine bench test systems capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the engine bench test systems shown in the accompanying drawings or described in this specification.
[0054] In summary, the hydrogen injection device proposed in this disclosure includes a water electrolyzer 110, a power supply 120, and a control unit. The water electrolyzer 110 generates hydrogen, and its outlet is connected to an engine bench test equipment via a pipeline. The water electrolyzer 110 is equipped with a pressure acquisition element 111, which measures the pressure information of the water electrolyzer 110. The power supply 120 is electrically connected to the water electrolyzer 110 to supply power. The control unit is connected to both the pressure acquisition element 111 and the power supply 120, and is used to perform feedback control on the power supply 120 based on the pressure information to adjust the operating state of the water electrolyzer 110. Through the above structural design, this disclosure can achieve real-time hydrogen production using the water electrolyzer 110, and transmit the pressure information of the water electrolyzer 110 collected by the pressure acquisition element 111 to the control unit, so that the control unit can perform feedback control on the power supply 120 based on the pressure information, thereby adjusting the hydrogen production rate.
[0055] The foregoing describes and / or illustrates exemplary embodiments of the intake hydrogenation device and engine bench test system proposed in this disclosure. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “an,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to those listed. Furthermore, the terms “first” and “second” in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.
[0056] Although the inlet hydrogenation device and engine bench test system proposed in this disclosure have been described according to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.
Claims
1. An intake hydrogen filling device for engine bench testing, characterized in that, The intake hydrogenation device includes a water electrolyzer, a power supply, and a control unit. The water electrolyzer generates hydrogen, and its outlet is connected to an engine bench test equipment via a pipeline. The water electrolyzer is equipped with a pressure acquisition element for measuring the pressure information of the water electrolyzer. The power supply is electrically connected to the water electrolyzer to supply power to it. The control unit is connected to both the pressure acquisition element and the power supply, and is used to provide feedback control to the power supply based on the pressure information to adjust the operating state of the water electrolyzer.
2. The inlet hydrogenation device according to claim 1, characterized in that, The power supply is an adjustable DC regulated power supply.
3. The inlet hydrogenation device according to claim 2, characterized in that, The adjustable DC regulated power supply has an output voltage range of 0–48V and an output power range of 0–24W.
4. The inlet hydrogenation device according to claim 1, characterized in that, The intake hydrogenation device also includes a sealed water tank, which is connected to the outlet of the water electrolysis generator via a first pipeline and to an engine bench test device via a second pipeline; wherein, one end of the first pipeline connected to the sealed water tank extends into the sealed water tank and is located below its liquid surface, and one end of the second pipeline connected to the sealed water tank is located above the liquid surface.
5. The inlet hydrogenation device according to claim 4, characterized in that, The sealed water tank is made of transparent material.
6. The inlet hydrogenation device according to claim 4, characterized in that, A first valve group is provided on the first pipeline, which is used to control the opening and closing of the first pipeline and to regulate the flow rate of the first pipeline.
7. The inlet hydrogenation device according to claim 4, characterized in that, A second valve assembly is installed on the second pipeline. The second valve assembly is used to control the opening and closing of the second pipeline and to regulate the flow rate of the second pipeline.
8. The inlet hydrogenation device according to claim 4, characterized in that, The second pipeline is equipped with a one-way valve, and the flow direction of the one-way valve is the direction of outflow from the sealed water tank.
9. The inlet hydrogenation apparatus according to any one of claims 1 to 8, characterized in that, The engine bench test equipment includes an engine combustion chamber, an engine intake manifold, and an engine intake filter. The gas flow direction of the engine bench test equipment is from the engine intake filter into the engine combustion chamber through the engine intake manifold. The outlet of the electrolyzed water generator is connected to the position between the engine intake filter and the engine intake manifold via a pipeline.
10. An engine bench testing system, characterized in that, It includes engine bench testing equipment and the intake hydrogenation device as described in any one of claims 1 to 9.