A test bench for measuring the injection quantity of an injection valve

Abstract

The present application relates to a kind of injection valve injection amount measurement test bench, integrated with methanol fuel storage and pumping module, ammonia fuel storage and pumping module, injection amount measurement module, control system, the methanol fuel storage and pumping module and ammonia fuel storage and pumping module are connected with injection amount measurement module by two-position three-way valve, constitute methanol fuel injector measurement mode and ammonia fuel injector measurement mode, the control system is connected methanol fuel storage and pumping module and ammonia fuel storage and pumping module respectively, by integrated two sets of independent methanol fuel storage and pumping module and ammonia fuel storage and pumping module and injection amount measurement module, the implementation mode for realizing common fuel injection amount measurement is realized.The present application uses modular structure design, so that test bench has wide fuel adaptability;Can reduce workshop reconstruction cost, test bench manufacturing cost;Can reduce workshop explosion danger area.

Description

Technical Field

[0001] This invention relates to a test bench that can adapt to the injection quantity measurement requirements of various fuel injection valves, specifically to a fuel injection quantity measurement device for reciprocating power machinery, belonging to the field of power machinery technology, especially in the application field of marine high-power four-stroke dual-fuel engines. Background Technology

[0002] With the IMO (International Maritime Organization) increasingly focusing on ship carbon emissions, mandatory regulations will be introduced in the future to limit and constrain ship carbon emissions. Therefore, seeking zero-carbon or low-carbon alternatives to traditional fossil fuels has become a crucial and effective method for addressing ship carbon emissions. Currently, various new fuels such as ammonia, methanol, and hydrogen have been technically proven to be usable in reciprocating internal combustion engines, replacing traditional diesel fuels. Depending on the fuel type, they can reduce ship carbon emissions to varying degrees. However, unlike traditional diesel fuels, these new fuels share common characteristics such as low viscosity, low flash point, and low calorific value, as well as unique characteristics such as strong corrosiveness and toxicity. This necessitates customized fuel injection quantity measurement test benches. Customized injection quantity measurement test benches result in high costs for factory renovations and test bench manufacturing, and reduce the testing flexibility of the test bench. Summary of the Invention

[0003] This invention proposes a test bench for measuring the injection quantity of injection valves applicable to various fuel injection valves (ammonia, methanol). Through two independent methanol fuel storage and pumping modules and an ammonia fuel storage and pumping module, along with the injection quantity measurement module, a common method for measuring fuel injection quantity can be achieved. The modular structure design gives the test bench broad fuel adaptability. It can reduce plant renovation costs and test bench manufacturing costs, and reduce the explosion hazard area in the plant.

[0004] To achieve the above objectives, the technical solution of the present invention is: an injection valve injection quantity measurement test bench, integrating a methanol fuel storage and pumping module, an ammonia fuel storage and pumping module, an injection quantity measurement module, and a control system. The methanol fuel storage and pumping module and the ammonia fuel storage and pumping module are connected to the injection quantity measurement module through a two-position three-way valve, forming a methanol fuel injector measurement mode and an ammonia fuel injector measurement mode. The control system is connected to both the methanol fuel storage and pumping module and the ammonia fuel storage and pumping module. Through the integrated two independent sets of methanol fuel storage and pumping module, ammonia fuel storage and pumping module, and injection quantity measurement module, a common fuel injection quantity measurement method is achieved.

[0005] Furthermore, the methanol fuel storage and pumping module includes a methanol fuel storage device, a methanol fuel low-pressure pumping device, and a methanol fuel release pumping device. The methanol fuel storage device is connected to the methanol fuel low-pressure pumping device and the methanol fuel release pumping device, and is also connected to the fuel cooling device in the injection quantity measurement module via a two-position three-way valve B. The methanol fuel low-pressure pumping device is connected to the fuel heating device in the injection quantity measurement module via a two-position three-way valve A. The methanol fuel release pumping device is connected to the ammonia fuel release collection device in the ammonia fuel storage and pumping module and the switching valve in the injection quantity measurement module via a two-position three-way valve C.

[0006] Furthermore, the ammonia fuel storage and pumping module includes an ammonia fuel low-pressure pumping device, an ammonia fuel storage device, an ammonia fuel release pumping device, and an ammonia fuel release collection device. The ammonia fuel storage device is connected to the ammonia fuel release collection device via the ammonia fuel release pumping device, and is also connected to a two-position three-way valve A via the ammonia fuel low-pressure pumping device.

[0007] Furthermore, the injection quantity measurement module includes a fuel heating device, a fuel cooling device, a fuel high-pressure pumping device, a fuel injector, an injection quantity metering device, a fuel cooling device, a fuel venting pipeline, a switching valve, and a test bench; one end of the fuel heating device is connected to a two-position three-way valve A, and the other end is sequentially connected to the fuel cooling device, the fuel high-pressure pumping device, the fuel injector, the injection quantity metering device, the fuel cooling device, and the two-position three-way valve B; the connecting pipelines between the fuel cooling device and the fuel high-pressure pumping device, the connecting pipelines between the fuel high-pressure pumping device and the fuel injector, and the connecting pipelines between the fuel injector and the injection quantity metering device are connected to the two-position three-way valve C through the switching valve.

[0008] Furthermore, the fuel injector and injection quantity metering device are mounted on a test bench.

[0009] Furthermore, the methanol fuel injector measurement mode is as follows: A methanol fuel injector is placed on a test bench; the low-pressure methanol fuel pump is energized and started; the two-position three-way valve A is manually / electrically switched; methanol fuel from the methanol fuel storage device passes through the two-position three-way valve A, the fuel heating device (heating as needed), and the fuel cooling device (cooling as needed) to enter the front end of the high-pressure fuel pump, which then delivers 600-700 bar high-pressure methanol fuel to the methanol fuel injector. Under the influence of an electronic control signal or a servo oil signal, the methanol fuel injects the high-pressure methanol fuel into the injection quantity metering device. After metering, the methanol fuel is cooled by the fuel cooling device and then flows back into the methanol fuel storage device through the two-position three-way valve B.

[0010] Furthermore, after the measurement is completed, the methanol fuel in the test bench pipeline flows through the fuel discharge pipeline, the switch valve, and the two-position three-way valve C into the methanol fuel discharge pumping device located at the low position, and then is pumped into the methanol fuel storage device.

[0011] Furthermore, the ammonia fuel injector measurement mode is as follows: An ammonia fuel injector is placed on a test bench; the low-pressure ammonia fuel pump is energized and started; the two-position three-way valve A is manually / electrically switched; ammonia fuel is supplied from the ammonia fuel storage device, through the two-position three-way valve A, the fuel heating device (heating as needed), and the fuel cooling device (cooling as needed); the front end of the high-pressure fuel pump then delivers 600-700 bar high-pressure ammonia fuel into the ammonia fuel injector; the ammonia fuel injector injects high-pressure ammonia fuel into the injection quantity metering device under an electronic control signal or servo oil signal; after metering, the ammonia fuel is cooled by the fuel cooling device and then flows back into the ammonia fuel storage device through the two-position three-way valve B.

[0012] Furthermore, after the measurement is completed, the ammonia fuel in the test bench pipeline enters the ammonia fuel collection device through the fuel discharge pipeline, the switch valve, and the two-position three-way valve C, and is then pumped into the ammonia fuel storage device by the ammonia fuel pumping device.

[0013] Furthermore, after the release and collection of methanol or ammonia fuel, the methanol or ammonia fuel in the test bench pipeline is thoroughly removed by nitrogen purging / water flushing.

[0014] The beneficial effects of this invention include:

[0015] 1) By using two independent methanol fuel storage and pumping modules and ammonia fuel storage and pumping modules, along with an injection quantity measurement module, a common fuel injection quantity measurement method can be achieved.

[0016] 2) The modular structure design enables the test bench to have a wide range of fuel adaptability;

[0017] 3) Reduce factory renovation costs and test bench manufacturing costs;

[0018] 4) Reduce the risk of explosion in the factory building. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the principle of the multi-fuel injection valve injection quantity measurement test bench of the present invention;

[0020] Figure 2 This is a schematic diagram of the test bench. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, the multi-fuel injection valve injection quantity measurement test bench of the present invention is composed of a methanol fuel storage and pumping module 21, an ammonia fuel storage and pumping module 18, an injection quantity measurement module 10, and a control system 23. The methanol fuel storage and pumping module 21 and the ammonia fuel storage and pumping module 18 are connected to the injection quantity measurement module 10 through a two-position three-way valve, forming a methanol fuel injector measurement mode and an ammonia fuel injector measurement mode. The control system 23 is connected to the methanol fuel storage and pumping module 21 and the ammonia fuel storage and pumping module 18 respectively. Through two independent sets of methanol fuel storage and pumping module 21 and ammonia fuel storage and pumping module 18 and injection quantity measurement module 10, a common fuel injection quantity measurement method is realized.

[0023] The methanol fuel storage and pumping module 21 includes a methanol fuel storage device 1, a methanol fuel low-pressure pumping device 2, and a methanol fuel release pumping device 20. The methanol fuel storage device 1 is connected to the methanol fuel low-pressure pumping device 2 and the methanol fuel release pumping device 20, and is also connected to the fuel cooling device 9 in the injection quantity measurement module 10 via a two-position three-way valve B11. The methanol fuel low-pressure pumping device 2 is connected to the fuel heating device 4 in the injection quantity measurement module 10 via a two-position three-way valve A3. The methanol fuel release pumping device 20 is connected to the ammonia fuel release collection device 17 in the ammonia fuel storage and pumping module 18 and the switching valve 13 in the injection quantity measurement module 10 via a two-position three-way valve C19.

[0024] The ammonia fuel storage and pumping module 18 includes an ammonia fuel low-pressure pumping device 14, an ammonia fuel storage device 15, an ammonia fuel discharge pumping device 16, and an ammonia fuel discharge collection device 17. The ammonia fuel storage device 15 is connected to the ammonia fuel discharge collection device 17 via the ammonia fuel discharge pumping device 16, and is connected to a two-position three-way valve A3 via the ammonia fuel low-pressure pumping device 14.

[0025] The injection quantity measurement module 10 includes a fuel heating device 4, a fuel cooling device 5, a high-pressure fuel pumping device 6, a fuel injector (methanol or ammonia fuel) 7, an injection quantity metering device 8, a fuel cooling device 9, a fuel venting pipeline 12, a switching valve 13, and a test bench 22. One end of the fuel heating device 4 is connected to a two-position three-way valve A3, and the other end is sequentially connected to the fuel cooling device 5, the high-pressure fuel pumping device 6, the fuel injector 7 (methanol or ammonia fuel), the injection quantity metering device 8, the fuel cooling device 9, and the two-position three-way valve B11. The connecting pipelines between the fuel cooling device 5 and the high-pressure fuel pumping device 6, between the high-pressure fuel pumping device 6 and the fuel injector 7 (methanol or ammonia fuel), and between the fuel injector 7 (methanol or ammonia fuel) and the injection quantity metering device 8 are connected to the two-position three-way valve C19 via the switching valve 13. The fuel injector 7 (methanol or ammonia fuel) and the injection quantity metering device 8 are mounted on the test bench 22, see [details omitted]. Figure 2 .

[0026] Specific application implementation of the multi-fuel injection valve injection quantity measurement test bench of the present invention:

[0027] I. Methanol Fuel Injector Measurement Mode

[0028] A methanol fuel injector 7 is placed on the test bench 22. The methanol fuel low-pressure pumping device 2 is energized and started. The two-position three-way valve A3 is manually / electrically switched. Methanol fuel is sent from the methanol fuel storage device 1 through the two-position three-way valve A3, the fuel heating device 4 (heating the fuel as needed), and the fuel cooling device 5 (cooling the fuel as needed) to the front end of the fuel high-pressure pumping device 6. The high-pressure (about 600 bar to 700 bar) methanol fuel is then sent to the methanol fuel injector 7. Under the control signal or servo oil signal, the methanol fuel injector 7 injects the high-pressure methanol fuel into the injection quantity metering device 8. After metering, the methanol fuel is cooled by the fuel cooling device 9 and then flows back into the methanol fuel storage device 11 through the two-position three-way valve B11.

[0029] After the measurement is completed, the methanol fuel in the test bench pipeline flows through the fuel discharge pipeline 12, the switch valve 13, and the two-position three-way valve C19 into the methanol fuel discharge pumping device 20 located at a low position, and then is pumped into the methanol fuel storage device 1. After the methanol fuel discharge and collection are completed, in order to completely remove the methanol fuel in the test bench pipeline, additional methods such as nitrogen purging / water flushing can be adopted (not shown in the figure).

[0030] II. Ammonia Fuel Injector Measurement Mode

[0031] On the test bench 22, an ammonia fuel injector 7 is placed; the ammonia fuel low-pressure pumping device 14 is energized and started, and the two-position three-way valve A3 is manually / electrically switched. Ammonia fuel is sent from the ammonia fuel storage device 15 through the two-position three-way valve A3, the fuel heating device 4 (heating the fuel as needed), the fuel cooling device 5 (cooling the fuel as needed), and the front end of the fuel high-pressure pumping device 6, and then the high-pressure (about 600 bar to 700 bar) ammonia fuel is sent into the ammonia fuel injector 7. The ammonia fuel injector 7 injects the high-pressure ammonia fuel into the injection quantity metering device 8 under the control signal or servo oil signal. After metering, the ammonia fuel is cooled by the fuel cooling device 9 and then flows back into the ammonia fuel storage device 15 through the two-position three-way valve B11.

[0032] After the measurement is completed, the ammonia fuel in the test bench pipeline enters the ammonia fuel collection device 17 through the fuel discharge pipeline 12, the switch valve 13, and the two-position three-way valve C19, and is then pumped into the ammonia fuel storage device 15 by the ammonia fuel pumping device 16. After the ammonia fuel discharge and collection are completed, nitrogen purging (not shown in the figure) can be used to completely remove the ammonia fuel in the test bench pipeline.

Claims

1. An injection valve injection quantity measurement test bench, characterized by: The system integrates a methanol fuel storage and pumping module, an ammonia fuel storage and pumping module, an injection quantity measurement module, and a control system. The methanol fuel storage and pumping module and the ammonia fuel storage and pumping module are connected to the injection quantity measurement module via a two-position three-way valve, forming a methanol fuel injector measurement mode and an ammonia fuel injector measurement mode. The control system is connected to both the methanol fuel storage and pumping module and the ammonia fuel storage and pumping module. Through the integrated two independent sets of methanol fuel storage and pumping module, ammonia fuel storage and pumping module, and injection quantity measurement module, a common fuel injection quantity measurement method is achieved. The methanol fuel storage and pumping module includes a methanol fuel storage device, a methanol fuel low-pressure pumping device, and a methanol fuel release pumping device. The methanol fuel storage device is connected to the methanol fuel low-pressure pumping device and the methanol fuel release pumping device, and is also connected to the fuel cooling device in the injection quantity measurement module via a two-position three-way valve B. The methanol fuel low-pressure pumping device is connected to the fuel heating device in the injection quantity measurement module via a two-position three-way valve A; the methanol fuel release pumping device is connected to the ammonia fuel release collection device in the ammonia fuel storage and pumping module and the switching valve in the injection quantity measurement module via a two-position three-way valve C; the ammonia fuel storage and pumping module includes an ammonia fuel low-pressure pumping device, an ammonia fuel storage device, an ammonia fuel release pumping device, and an ammonia fuel release collection device. The ammonia fuel storage device is connected to the ammonia fuel release collection device via the ammonia fuel release pumping device, and is also connected to the two-position three-way valve A via the ammonia fuel low-pressure pumping device; the injection quantity measurement module includes a fuel heating device. The fuel heating device consists of a fuel cooling device (5), a fuel high-pressure pumping device, a fuel injector, an injection quantity metering device, a fuel cooling device (9), a fuel discharge pipeline, a switch valve, and a test bench. One end of the fuel heating device is connected to a two-position three-way valve A, and the other end is connected in sequence to the fuel cooling device (5), the fuel high-pressure pumping device, the fuel injector, the injection quantity metering device, the fuel cooling device (9), and the two-position three-way valve B. The connecting pipelines of the fuel cooling device (5) and the fuel high-pressure pumping device, the connecting pipelines of the fuel high-pressure pumping device and the fuel injector, and the connecting pipelines of the fuel injector and the injection quantity metering device are connected to the two-position three-way valve C through the switch valve.

2. The injection valve injection quantity measurement test bench according to claim 1, characterized in that: The fuel injector and injection quantity metering device are installed on the test bench.

3. The injection valve injection quantity measurement test bench according to claim 1, characterized in that: The methanol fuel injector measurement mode is as follows: A methanol fuel injector is placed on a test bench; the low-pressure methanol fuel pumping device is energized and started; the two-position three-way valve A is manually / electrically switched; methanol fuel is supplied from the methanol fuel storage device, through the two-position three-way valve A, the fuel heating device (heating as needed), and the fuel cooling device (cooling as needed), and enters the front end of the high-pressure fuel pumping device, which then delivers 600-700 bar high-pressure methanol fuel to the methanol fuel injector. Under the control signal or servo oil signal, the methanol fuel injector sprays the high-pressure methanol fuel into the injection quantity metering device. After metering, the methanol fuel is cooled by the fuel cooling device and then flows back into the methanol fuel storage device through the two-position three-way valve B.

4. The injection valve injection quantity measurement test bench according to claim 3, characterized in that: After the measurement is completed, the methanol fuel in the test bench pipeline flows through the fuel discharge pipeline, the switch valve, and the two-position three-way valve C into the methanol fuel discharge pumping device located at the low position, and then is pumped into the methanol fuel storage device.

5. The injection valve injection quantity measurement test bench of claim 1, wherein: The ammonia fuel injector measurement mode is as follows: An ammonia fuel injector is placed on a test bench; the low-pressure ammonia fuel pump is energized and started; the two-position three-way valve A is manually / electrically switched; ammonia fuel is supplied from the ammonia fuel storage device, through the two-position three-way valve A, the fuel heating device (heating as needed), and the fuel cooling device (cooling as needed); the front end of the high-pressure fuel pump then delivers 600-700 bar high-pressure ammonia fuel into the ammonia fuel injector; the ammonia fuel injector injects high-pressure ammonia fuel into the injection quantity metering device under an electronic control signal or servo oil signal; after metering, the ammonia fuel is cooled by the fuel cooling device and then flows back into the ammonia fuel storage device through the two-position three-way valve B.

6. The injection valve injection quantity measurement test bench according to claim 5, characterized in that: After the measurement is completed, the ammonia fuel in the test bench pipeline enters the ammonia fuel collection device through the fuel discharge pipeline, the switch valve, and the two-position three-way valve C, and is then pumped into the ammonia fuel storage device by the ammonia fuel pumping device.

7. The injection valve injection quantity measurement test bench according to claim 5 or 6, characterized in that: After the release and collection of methanol or ammonia fuel, the methanol or ammonia fuel in the test bench pipeline is thoroughly removed by nitrogen purging / water flushing.

Images