WO2024120047A1 - System of ammonia-diesel dual-fuel engine, and control method therefor - Google Patents

System of ammonia-diesel dual-fuel engine, and control method therefor Download PDF

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Publication number
WO2024120047A1
WO2024120047A1 PCT/CN2023/127169 CN2023127169W WO2024120047A1 WO 2024120047 A1 WO2024120047 A1 WO 2024120047A1 CN 2023127169 W CN2023127169 W CN 2023127169W WO 2024120047 A1 WO2024120047 A1 WO 2024120047A1
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Prior art keywords
ammonia
valve
engine
stop valve
diesel
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PCT/CN2023/127169
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French (fr)
Chinese (zh)
Inventor
吕晓东
尹欢
路远
徐茂楠
朱守全
于昕彤
娄晶
Original Assignee
中车大连机车车辆有限公司
大连中车柴油机有限公司
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Publication of WO2024120047A1 publication Critical patent/WO2024120047A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
    • F02B69/02—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
    • F02B69/04—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel for gaseous and non-gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels

Definitions

  • the present invention relates to the technical field of engines, and in particular to an ammonia-diesel dual-fuel engine system and a control method thereof.
  • Ammonia does not contain carbon and can be synthesized from green hydrogen and nitrogen in the air, so ammonia is a very promising zero-carbon fuel. Engines burning ammonia can effectively reduce CO2 emissions.
  • Ammonia diesel dual-fuel engines can operate in full diesel mode or in ammonia diesel dual-fuel mode. However, when the engine switches from ammonia diesel dual-fuel mode to diesel mode, the engine's ammonia supply is cut off, and there will be residual ammonia in the ammonia supply pipeline. Ammonia is toxic, and it is necessary to ensure that the residual ammonia is safely discharged without causing pollution or affecting people's health. In addition, it is also necessary to ensure that the engine can still operate stably during the fuel switching process.
  • the present invention relates to an ammonia-diesel dual-fuel engine system and a control method thereof, which are used to stop the ammonia supply, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode.
  • the present invention provides a system for an ammonia-diesel dual-fuel engine, the system comprising: a valve group unit, an engine, an electronic controller, and a waste liquid collection tank;
  • the electronic controller is electrically connected to the valve group unit and the electronic control components in the engine, respectively, to control the actions of the valve group unit and the components in the engine; the valve group unit and the engine are respectively connected to the waste liquid collection tank, and under the control of the electronic controller, ammonia is discharged to The waste liquid collection pool.
  • valve group unit comprises: a solenoid valve, a first stop valve, a second stop valve, a nitrogen solenoid valve, an ammonia inlet, a valve group unit exhaust outlet and a nitrogen inlet;
  • the solenoid valve is a 2-position 3-way solenoid valve, including an inlet A, an outlet B and a discharge port C;
  • the first stop valve is a three-way stop valve, including an inlet A, an outlet B and a discharge port C;
  • the second stop valve is a two-way stop valve, including an inlet A and an outlet B;
  • the ammonia inlet is connected to the inlet A of the first stop valve, the outlet B of the first stop valve is connected to the inlet A of the second stop valve; the outlet B of the second stop valve is connected to the engine;
  • valve assembly unit drain outlet is connected to the discharge port C of the first stop valve; the valve assembly unit drain outlet is also connected to the discharge ports C of the two solenoid valves;
  • the nitrogen inlet is connected to the nitrogen solenoid valve, and the electronic controller is electrically connected to the nitrogen solenoid valve; the other end of the nitrogen solenoid valve is connected after the outlet B of the second stop valve;
  • the drain outlet of the valve group unit is connected with the waste liquid collection tank through a pipeline.
  • the engine comprises: an ammonia injection valve, a cylinder, an electronically controlled diesel injection pump, a venting solenoid valve and a venting port;
  • ammonia injection valve and the electronically controlled diesel injection pump are respectively connected to the cylinder;
  • the electronic controller is electrically connected to the ammonia injection valve and the electronically controlled diesel injection pump respectively;
  • the ventilation solenoid valve is arranged at the end of the ammonia gas supply pipeline of the engine, and the electronic controller is electrically connected to the ventilation solenoid valve;
  • the vent is connected to the outlet of the vent solenoid valve and is communicated with the waste liquid collection tank through a pipeline.
  • the two pipelines through the valve group unit exhaust outlet and the two pipelines through the air vent that discharge into the waste liquid collection tank are independent pipelines.
  • ammonia injection valves there are multiple groups of ammonia injection valves, cylinders and electronically controlled diesel injection pumps, and the ammonia injection valves in the groups
  • the valve and the electronically controlled diesel fuel injection pump are respectively connected to the cylinders; and the electronic controller is respectively electrically connected to the ammonia injection valve and the electronically controlled diesel fuel injection pump in each group.
  • the ammonia gas discharged into the waste liquid collection pool is mixed with the water therein to form waste liquid, and the waste liquid is treated uniformly after a predetermined period of time.
  • the nitrogen pressure at the nitrogen inlet is 1-2 bar higher than the maximum ammonia injection pressure of the ammonia injection valve.
  • the present invention further provides a control method for an ammonia diesel dual-fuel engine, which is applied to the system of the ammonia diesel dual-fuel engine.
  • the control method is operated as follows:
  • the electronic controller cuts off the power to the ammonia injection valve and stops delivering ammonia to the cylinder of the engine. At the same time, the controller controls the electronically controlled diesel injection pump to increase the amount of diesel injection into the cylinder to ensure that the engine runs smoothly after the ammonia fuel supply stops.
  • the electronic controller cuts off the power to the two solenoid valves, disconnects the AB passage in the solenoid valves, and connects the BC passage, so that the ammonia in the upper chambers of the first stop valve and the second stop valve is discharged from the BC passage in the solenoid valves to the waste liquid collection tank through the valve group unit exhaust outlet.
  • the A and B passages of the first stop valve and the second stop valve are disconnected due to the loss of pressure in the upper chambers.
  • the electronic controller cuts off the power to the vent solenoid valve, and discharges the ammonia remaining in the pipeline between the outlet B of the second stop valve and the vent solenoid valve into the waste liquid collection tank through the vent port.
  • the BC passage of the first stop valve is connected, and the ammonia gas remaining between the outlet B of the first stop valve and the inlet A of the second stop valve is discharged into the waste liquid collection tank through the exhaust outlet of the valve group unit.
  • the electronic controller turns off the power to open the nitrogen solenoid valve, and the nitrogen enters the ammonia pipeline after the second shut-off valve through the nitrogen inlet, and the residual ammonia in it is discharged into the waste liquid collection tank through the ventilation solenoid valve and the ventilation port.
  • the present invention provides an ammonia diesel dual-fuel engine system and a control method thereof, which can stop the ammonia supply, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode, so as to ensure that the engine can be successfully switched to the diesel mode in a short time, ensure the stable operation of the engine, and avoid the leakage of ammonia. The harm caused.
  • FIG1 is a schematic diagram of the structure of a system of an ammonia-diesel dual-fuel engine according to an embodiment of the present invention, wherein the dotted lines in FIG1 represent electrical control circuit connections;
  • 1-valve group unit 1.1-solenoid valve, 1.2-first stop valve, 1.3-second stop valve, 1.4-nitrogen solenoid valve, 1.5-ammonia inlet, 1.6-valve group unit exhaust outlet, 1.7-nitrogen inlet, 2-engine, 2.1-ammonia injection valve, 2.2-cylinder, 2.3-electronically controlled diesel injection pump, 2.4-ventilation solenoid valve, 2.5-ventilation port, 3-electronic controller, 4-waste liquid collection tank.
  • the system of the ammonia diesel dual-fuel engine in the embodiment of the present invention includes: a valve group unit 1, an engine 2, an electronic controller 3 and a waste liquid collection tank 4.
  • the valve group unit 1 and the engine 2 are respectively connected to the waste liquid collection tank 4 to discharge the waste liquid to the waste liquid collection tank 4;
  • the electronic controller 3 is electrically connected to the electronic control components in the valve group unit 1 and the engine 2 to control the operation of each component in the valve group unit 1 and the engine 2.
  • the valve group unit 1 comprises: a solenoid valve 1.1, a first stop valve 1.2, a second stop valve 1.3, a nitrogen solenoid valve 1.4, an ammonia inlet 1.5, a valve group unit exhaust outlet 1.6 and a nitrogen inlet 1.7.
  • the first stop valve 1.2 is a three-way stop valve, including an inlet A, an outlet B, and a discharge port C.
  • the second stop valve 1.3 is a two-way stop valve, including an inlet A and an outlet B.
  • the ammonia inlet 1.5 is connected to the inlet A of the first stop valve 1.2
  • the outlet B of the first stop valve 1.2 is connected to the inlet A of the second stop valve 1.3.
  • Ammonia can enter from the ammonia inlet 1.5, and enter the engine 2 through the inlet A and outlet B of the first stop valve 1.2, and the inlet A and outlet B of the second stop valve 1.3.
  • the valve assembly unit emptying outlet 1.6 is connected to the discharge port C of the first stop valve 1.2, and the valve assembly unit emptying outlet 1.6 is also connected to the discharge ports C of the two solenoid valves 1.1. Under the control of the solenoid valve, the ammonia in the valve assembly unit is discharged from the valve assembly unit emptying outlet 1.6 through the discharge port C of the first stop valve 1.2.
  • the other end of the valve assembly unit emptying outlet 1.6 is connected to the waste liquid collection tank 4 through a pipeline, and the ammonia discharged from the valve assembly unit 1 can be collected in the waste liquid collection tank 4.
  • the solenoid valve 1.1 is a 2-position 3-way solenoid valve, including an inlet A, an outlet B and a discharge port C. There are two solenoid valves 1.1, one connected to the first stop valve 1.2, and the other connected to the second stop valve 1.3.
  • the electronic controller 3 is electrically connected to the two solenoid valves 1.1 respectively, and the first stop valve 1.2 and the second stop valve 1.3 can be opened and closed through the two solenoid valves 1.1.
  • the nitrogen inlet 1.7 is connected to a nitrogen solenoid valve 1.4, the electronic controller 3 is electrically connected to the nitrogen solenoid valve 1.4, and the other end of the nitrogen solenoid valve 1.4 is connected after the outlet B of the second stop valve 1.3; the nitrogen purge time can be controlled by the nitrogen solenoid valve 1.4.
  • the engine 2 comprises: an ammonia injection valve 2.1, a cylinder 2.2, an electronically controlled diesel fuel injection pump 2.3, a venting solenoid valve 2.4 and a venting port 2.5.
  • the ammonia injection valve 2.1, the cylinder 2.2 and the electronically controlled diesel fuel injection pump 2.3 are provided in multiple groups, and the ammonia injection valve 2.1 and the electronically controlled diesel fuel injection pump 2.3 in each group are connected to the cylinder 2.2 respectively.
  • the electronic controller 3 is electrically connected to the ammonia injection valve 2.1 and the electronically controlled diesel injection pump 2.3 in each group, and is used to control the amount of ammonia and diesel injected into the cylinder respectively.
  • the air permeable solenoid valve 2.4 is arranged at the end of the ammonia supply pipeline of the engine 2; the electronic controller 3 is electrically connected to the air permeable solenoid valve 2.4, and is used to control the amount of ammonia discharged from the engine; the air vent 2.5 is connected to the outlet of the air permeable solenoid valve 2.4, and is connected to the waste liquid collection tank 4 through a pipeline, so that the ammonia discharged from the engine 2 can be collected in the waste liquid collection tank 4.
  • the vent 2.5 is connected to the waste liquid collection tank 4 through a pipeline.
  • the two pipelines discharged through the valve group unit outlet 1.6 and the vent 2.5 to the waste liquid collection tank 4 are independent pipelines; the ammonia gas discharged into the waste liquid collection tank 4 is mixed with the water therein to form waste liquid (ammonia gas is toxic and cannot be directly discharged into the atmosphere), and the waste liquid is uniformly treated after a certain period of time.
  • the engine 2 is an ammonia-diesel dual-fuel engine, which can be operated in a full diesel mode or in an ammonia-diesel dual-fuel mode.
  • the system of the ammonia-diesel dual-fuel engine can, under the control of the electronic controller 3, stop the supply of ammonia, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode.
  • the electronic controller 3 of the ammonia diesel dual-fuel engine receives a signal to switch from the dual-fuel mode to the diesel mode, it operates according to the following control method:
  • the electronic controller 3 cuts off the power to the ammonia injection valve 2.1 and stops delivering ammonia to the cylinder 2.2 in the engine 2; at the same time, the controller controls the electronically controlled diesel injection pump 2.3 to increase the diesel injection amount into the cylinder 2.2 to ensure that the engine runs smoothly after the ammonia fuel supply stops.
  • the electronic controller 3 cuts off the power to the two solenoid valves 1.1, disconnects the AB passage in the solenoid valve 1.1, and connects the BC passage, so that the ammonia in the upper cavity of the first stop valve 1.2 and the second stop valve 1.3 is discharged from the BC passage in the solenoid valve 1.1 to the waste liquid collection tank 4 through the valve group unit exhaust outlet 1.6.
  • the first stop valve 1.2 and the second stop valve 1.3 lose pressure in the upper cavity, resulting in disconnection of the A and B passages.
  • the electronic controller 3 cuts off the power to the vent solenoid valve 2.4, and discharges the ammonia gas remaining in the pipeline between the B port of the second stop valve 1.3 and the vent solenoid valve 2.4 into the waste liquid collection tank 4 through the vent port 2.5.
  • the electronic controller 3 After the ventilation solenoid valve 2.4 is powered off for 1 second, the electronic controller 3 turns off the power to open the nitrogen solenoid valve 1.4, and the nitrogen enters the ammonia pipeline behind the second stop valve 1.3 through the nitrogen inlet 1.7, and the residual ammonia in it is discharged into the waste liquid collection tank 4 through the ventilation solenoid valve 2.4 and the ventilation port 2.5.
  • the electronic controller 3 powers on and closes the nitrogen solenoid valve 1.4 and the air permeability solenoid valve 2.4.
  • the nitrogen pressure at the nitrogen inlet 1.7 is 1-2 bar higher than the maximum ammonia injection pressure of the ammonia injection valve 2.1.
  • the switching of the ammonia-diesel dual-fuel engine from the dual-fuel mode to the diesel mode is achieved, thereby ensuring the safe and stable operation of the engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
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Abstract

A system of an ammonia-diesel dual-fuel engine. The system comprises a valve bank unit (1), an engine (2), an electronic controller (3) and a waste liquid collection tank (4), wherein the electronic controller (3) is electrically connected to electronic control components in both the valve bank unit (1) and the engine (2), so as to control components in the valve bank unit (1) and the engine (2) to act; and the valve bank unit (1) and the engine (2) are both in communication with the waste liquid collection tank (4), such that ammonia is discharged to the waste liquid collection tank (4) under the control of the electronic controller (3). Further provided is a control method for a system of an ammonia-diesel dual-fuel engine. The control method comprises: when an engine (2) switches from a dual-fuel mode to a diesel mode, stopping conveying ammonia into an air cylinder of the engine (2); at the same time, increasing the amount of diesel injected into the air cylinder, so as to ensure stable operation of the engine (2) after the supply of ammonia fuel is stopped; and concentrating and collecting, to a waste liquid collection tank (4) for unified disposal, ammonia discharged from a valve bank unit (1) and the engine (2). The system of an ammonia-diesel dual-fuel engine and the control method therefor can ensure that an engine successfully switches to a diesel mode within a short time, thereby ensuring stable operation of the engine, and also avoiding harm caused by leakage of ammonia.

Description

一种氨柴油双燃料发动机的***及其控制方法A system and control method of an ammonia diesel dual-fuel engine 技术领域Technical Field
本发明涉及发动机技术领域，特别是涉及一种氨柴油双燃料发动机的***及其控制方法。The present invention relates to the technical field of engines, and in particular to an ammonia-diesel dual-fuel engine system and a control method thereof.
背景技术Background technique
控制和减少全球人为活动的温室气体排放量，已成为国际共识。氨不含碳，且可以由绿氢和空气中的氮气合成，所以氨是一种非常有前景的零碳燃料，发动机燃用氨，可以有效降低CO2的排放。It has become an international consensus to control and reduce greenhouse gas emissions from global human activities. Ammonia does not contain carbon and can be synthesized from green hydrogen and nitrogen in the air, so ammonia is a very promising zero-carbon fuel. Engines burning ammonia can effectively reduce CO2 emissions.
氨柴油双燃料发动机可以在全柴油模式下运行，也可以在氨柴油双燃料模式下运行。然而，在发动机从氨柴油双燃料模式切换至柴油模式时，发动机的氨气供应被切断，氨气供给管路内会有残留氨气，而氨气具有毒性，需要保证残留氨气安全排出且不会造成污染及影响人们的健康。另外还需要保证发动机在燃料切换的过程中，发动机仍可稳定运行。Ammonia diesel dual-fuel engines can operate in full diesel mode or in ammonia diesel dual-fuel mode. However, when the engine switches from ammonia diesel dual-fuel mode to diesel mode, the engine's ammonia supply is cut off, and there will be residual ammonia in the ammonia supply pipeline. Ammonia is toxic, and it is necessary to ensure that the residual ammonia is safely discharged without causing pollution or affecting people's health. In addition, it is also necessary to ensure that the engine can still operate stably during the fuel switching process.
发明内容Summary of the invention
有鉴于此，本发明涉及一种氨柴油双燃料发动机的***及其控制方法，在发动机从双燃料模式切换到柴油模式时，用以实现停止氨气供应、将氨气供给管路内的氨气排出并集中收集。In view of this, the present invention relates to an ammonia-diesel dual-fuel engine system and a control method thereof, which are used to stop the ammonia supply, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode.
为此，本发明提供了以下技术方案：To this end, the present invention provides the following technical solutions:
一方面，本发明提供了一种氨柴油双燃料发动机的***，所述***包括：阀组单元、发动机、电子控制器和废液收集池；In one aspect, the present invention provides a system for an ammonia-diesel dual-fuel engine, the system comprising: a valve group unit, an engine, an electronic controller, and a waste liquid collection tank;
所述电子控制器分别与所述阀组单元和所述发动机中的电控部件电连接，控制所述阀组单元和所述发动机中各部件动作；所述阀组单元和所述发动机分别与所述废液收集池连通，在所述电子控制器的控制下将氨气排出至 所述废液收集池。The electronic controller is electrically connected to the valve group unit and the electronic control components in the engine, respectively, to control the actions of the valve group unit and the components in the engine; the valve group unit and the engine are respectively connected to the waste liquid collection tank, and under the control of the electronic controller, ammonia is discharged to The waste liquid collection pool.
进一步地，所述阀组单元，包括：电磁阀、第一截止阀、第二截止阀、氮气电磁阀、氨气进口、阀组单元排空出口和氮气进口；Further, the valve group unit comprises: a solenoid valve, a first stop valve, a second stop valve, a nitrogen solenoid valve, an ammonia inlet, a valve group unit exhaust outlet and a nitrogen inlet;
所述电磁阀为2位3通电磁阀，包括进口A、出口B和泄放口C；The solenoid valve is a 2-position 3-way solenoid valve, including an inlet A, an outlet B and a discharge port C;
所述第一截止阀为三通截止阀，包括进口A、出口B和泄放口C；The first stop valve is a three-way stop valve, including an inlet A, an outlet B and a discharge port C;
所述第二截止阀为二通截止阀，包括进口A和出口B；The second stop valve is a two-way stop valve, including an inlet A and an outlet B;
所述氨气进口连接所述第一截止阀的进口A，所述第一截止阀的出口B与所述第二截止阀的进口A连接；所述第二截止阀的出口B与发动机连接；The ammonia inlet is connected to the inlet A of the first stop valve, the outlet B of the first stop valve is connected to the inlet A of the second stop valve; the outlet B of the second stop valve is connected to the engine;
所述阀组单元排空出口连接所述第一截止阀的泄放口C；所述阀组单元排空出口还与2个电磁阀的泄放口C相连；The valve assembly unit drain outlet is connected to the discharge port C of the first stop valve; the valve assembly unit drain outlet is also connected to the discharge ports C of the two solenoid valves;
所述电磁阀有两个，一个与所述第一截止阀相连，另一个与所述第二截止阀相连，所述电子控制器分别与两个电磁阀电连接；There are two solenoid valves, one connected to the first stop valve, and the other connected to the second stop valve, and the electronic controller is electrically connected to the two solenoid valves respectively;
所述氮气进口连接有所述氮气电磁阀，所述电子控制器与所述氮气电磁阀电连接；所述氮气电磁阀的另一端连接在所述第二截止阀的出口B之后；The nitrogen inlet is connected to the nitrogen solenoid valve, and the electronic controller is electrically connected to the nitrogen solenoid valve; the other end of the nitrogen solenoid valve is connected after the outlet B of the second stop valve;
阀组单元排空出口通过管路与废液收集池连通。The drain outlet of the valve group unit is connected with the waste liquid collection tank through a pipeline.
进一步地，所述发动机，包括：氨气喷气阀、气缸、电控柴油喷油泵、透气电磁阀和透气口；Further, the engine comprises: an ammonia injection valve, a cylinder, an electronically controlled diesel injection pump, a venting solenoid valve and a venting port;
所述氨气喷气阀和所述电控柴油喷油泵分别与所述气缸相连；The ammonia injection valve and the electronically controlled diesel injection pump are respectively connected to the cylinder;
所述电子控制器分别与所述氨气喷气阀、所述电控柴油喷油泵电连接；The electronic controller is electrically connected to the ammonia injection valve and the electronically controlled diesel injection pump respectively;
所述透气电磁阀设置在发动机的氨气供气管路末端，所述电子控制器与所述透气电磁阀电连接；The ventilation solenoid valve is arranged at the end of the ammonia gas supply pipeline of the engine, and the electronic controller is electrically connected to the ventilation solenoid valve;
所述透气口与透气电磁阀的出口相连，并通过管路与所述废液收集池连通。The vent is connected to the outlet of the vent solenoid valve and is communicated with the waste liquid collection tank through a pipeline.
进一步地，经所述阀组单元排空出口与经所述透气口排入至废液收集池的2根管路为独立管路。Furthermore, the two pipelines through the valve group unit exhaust outlet and the two pipelines through the air vent that discharge into the waste liquid collection tank are independent pipelines.
进一步地，氨气喷气阀、气缸和电控柴油喷油泵有多组，组内氨气喷气 阀和电控柴油喷油泵分别与气缸相连；电子控制器分别与每组中的氨气喷气阀、电控柴油喷油泵电连接。Furthermore, there are multiple groups of ammonia injection valves, cylinders and electronically controlled diesel injection pumps, and the ammonia injection valves in the groups The valve and the electronically controlled diesel fuel injection pump are respectively connected to the cylinders; and the electronic controller is respectively electrically connected to the ammonia injection valve and the electronically controlled diesel fuel injection pump in each group.
进一步地，排入所述废液收集池的氨气与其内的水混合形成废液，预定时间后废液统一处理。Furthermore, the ammonia gas discharged into the waste liquid collection pool is mixed with the water therein to form waste liquid, and the waste liquid is treated uniformly after a predetermined period of time.
进一步地，所述氮气进口处的氮气压力比所述氨气喷气阀的最大氨气喷射压力高1-2bar。Furthermore, the nitrogen pressure at the nitrogen inlet is 1-2 bar higher than the maximum ammonia injection pressure of the ammonia injection valve.
又一方面，本发明还提供了一种氨柴油双燃料发动机的控制方法，应用于上述氨柴油双燃料发动机的***，当所述电子控制器接收到从氨柴油双燃料模式切换到柴油模式的信号后，按如下控制方法进行操作：In another aspect, the present invention further provides a control method for an ammonia diesel dual-fuel engine, which is applied to the system of the ammonia diesel dual-fuel engine. When the electronic controller receives a signal to switch from the ammonia diesel dual-fuel mode to the diesel mode, the control method is operated as follows:
电子控制器将氨气喷气阀断电，停止向发动机的气缸内输送氨气；同时，控制器控制电控柴油喷油泵向气缸内增加柴油喷射量，保证氨燃料供给停止后，发动机运行平稳；The electronic controller cuts off the power to the ammonia injection valve and stops delivering ammonia to the cylinder of the engine. At the same time, the controller controls the electronically controlled diesel injection pump to increase the amount of diesel injection into the cylinder to ensure that the engine runs smoothly after the ammonia fuel supply stops.
电子控制器将2个电磁阀断电，电磁阀内的AB通路断开，BC通路连通，将第一截止阀和第二截止阀的上腔体内的氨气由电磁阀内的BC通路，经阀组单元排空出口排入至废液收集池，同时第一截止阀和第二截止阀因上腔体失去压力，导致A、B通路断开；The electronic controller cuts off the power to the two solenoid valves, disconnects the AB passage in the solenoid valves, and connects the BC passage, so that the ammonia in the upper chambers of the first stop valve and the second stop valve is discharged from the BC passage in the solenoid valves to the waste liquid collection tank through the valve group unit exhaust outlet. At the same time, the A and B passages of the first stop valve and the second stop valve are disconnected due to the loss of pressure in the upper chambers.
电子控制器将透气电磁阀断电，将第二截止阀的出口B与透气电磁阀之间的管路内存留的氨气经透气口排入至废液收集池。The electronic controller cuts off the power to the vent solenoid valve, and discharges the ammonia remaining in the pipeline between the outlet B of the second stop valve and the vent solenoid valve into the waste liquid collection tank through the vent port.
进一步地，第一截止阀和第二截止阀的AB通路断开后，第一截止阀的BC通路连通，将第一截止阀的出口B和第二截止阀的进口A之间存留的氨气，经阀组单元排空出口排入至废液收集池。Furthermore, after the AB passages of the first stop valve and the second stop valve are disconnected, the BC passage of the first stop valve is connected, and the ammonia gas remaining between the outlet B of the first stop valve and the inlet A of the second stop valve is discharged into the waste liquid collection tank through the exhaust outlet of the valve group unit.
进一步地，透气电磁阀断电1s后，电子控制器将氮气电磁阀断电打开，氮气经氮气进口进入第二截止阀后的氨气管路，将其内残留的氨气经透气电磁阀、透气口排入至废液收集池。Furthermore, 1 second after the ventilation solenoid valve is powered off, the electronic controller turns off the power to open the nitrogen solenoid valve, and the nitrogen enters the ammonia pipeline after the second shut-off valve through the nitrogen inlet, and the residual ammonia in it is discharged into the waste liquid collection tank through the ventilation solenoid valve and the ventilation port.
本发明的优点和积极效果：本发明提供了一种氨柴油双燃料发动机的***及其控制方法，在发动机从双燃料模式切换到柴油模式时，用以实现停止氨气供应、将氨气供给管路内的氨气排出并集中收集，能够确保发动机在较短时间内成功切换至柴油模式，保证发动机的稳定运行，也避免了氨气外泄 导致的危害。Advantages and positive effects of the present invention: The present invention provides an ammonia diesel dual-fuel engine system and a control method thereof, which can stop the ammonia supply, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode, so as to ensure that the engine can be successfully switched to the diesel mode in a short time, ensure the stable operation of the engine, and avoid the leakage of ammonia. The harm caused.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图做以简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
图1为本发明实施例中一种氨柴油双燃料发动机的***的结构示意图，其中图1中的虚线表示电气控制线路连接；FIG1 is a schematic diagram of the structure of a system of an ammonia-diesel dual-fuel engine according to an embodiment of the present invention, wherein the dotted lines in FIG1 represent electrical control circuit connections;
图中，1-阀组单元、1.1-电磁阀、1.2-第一截止阀、1.3-第二截止阀、1.4-氮气电磁阀、1.5-氨气进口、1.6-阀组单元排空出口、1.7-氮气进口、2-发动机、2.1-氨气喷气阀、2.2-气缸、2.3-电控柴油喷油泵、2.4-透气电磁阀、2.5-透气口、3-电子控制器、4-废液收集池。In the figure, 1-valve group unit, 1.1-solenoid valve, 1.2-first stop valve, 1.3-second stop valve, 1.4-nitrogen solenoid valve, 1.5-ammonia inlet, 1.6-valve group unit exhaust outlet, 1.7-nitrogen inlet, 2-engine, 2.1-ammonia injection valve, 2.2-cylinder, 2.3-electronically controlled diesel injection pump, 2.4-ventilation solenoid valve, 2.5-ventilation port, 3-electronic controller, 4-waste liquid collection tank.
具体实施方式Detailed ways
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。 It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
如图1所示，本发明实施例中的氨柴油双燃料发动机的***，包括：阀组单元1、发动机2、电子控制器3和废液收集池4。阀组单元1和发动机2分别与废液收集池4连通，将废液排出至废液收集池4；电子控制器3分别与阀组单元1和发动机2中的电控部件电连接，控制阀组单元1和发动机2中各部件动作。其中：As shown in FIG1 , the system of the ammonia diesel dual-fuel engine in the embodiment of the present invention includes: a valve group unit 1, an engine 2, an electronic controller 3 and a waste liquid collection tank 4. The valve group unit 1 and the engine 2 are respectively connected to the waste liquid collection tank 4 to discharge the waste liquid to the waste liquid collection tank 4; the electronic controller 3 is electrically connected to the electronic control components in the valve group unit 1 and the engine 2 to control the operation of each component in the valve group unit 1 and the engine 2. Among them:
阀组单元1，包括：电磁阀1.1、第一截止阀1.2、第二截止阀1.3、氮气电磁阀1.4、氨气进口1.5、阀组单元排空出口1.6和氮气进口1.7。The valve group unit 1 comprises: a solenoid valve 1.1, a first stop valve 1.2, a second stop valve 1.3, a nitrogen solenoid valve 1.4, an ammonia inlet 1.5, a valve group unit exhaust outlet 1.6 and a nitrogen inlet 1.7.
第一截止阀1.2为三通截止阀，包括进口A、出口B、还有泄放口C。第二截止阀1.3为二通截止阀，包括进口A和出口B。氨气进口1.5连接第一截止阀1.2的进口A，第一截止阀1.2的出口B与第二截止阀1.3的进口A连接，氨气可以从氨气进口1.5进入，经第一截止阀1.2的进口A、出口B、第二截止阀1.3的进口A、出口B进入发动机2中。The first stop valve 1.2 is a three-way stop valve, including an inlet A, an outlet B, and a discharge port C. The second stop valve 1.3 is a two-way stop valve, including an inlet A and an outlet B. The ammonia inlet 1.5 is connected to the inlet A of the first stop valve 1.2, and the outlet B of the first stop valve 1.2 is connected to the inlet A of the second stop valve 1.3. Ammonia can enter from the ammonia inlet 1.5, and enter the engine 2 through the inlet A and outlet B of the first stop valve 1.2, and the inlet A and outlet B of the second stop valve 1.3.
阀组单元排空出口1.6连接第一截止阀1.2的泄放口C，阀组单元排空出口1.6还与2个电磁阀1.1的泄放口C相连，在电磁阀的控制下阀组单元内的氨气经第一截止阀1.2的泄放口C从阀组单元排空出口1.6排出。阀组单元排空出口1.6的另一端通过管路与废液收集池4连通，可以将从阀组单元1中排出的氨气收集至废液收集池4中。The valve assembly unit emptying outlet 1.6 is connected to the discharge port C of the first stop valve 1.2, and the valve assembly unit emptying outlet 1.6 is also connected to the discharge ports C of the two solenoid valves 1.1. Under the control of the solenoid valve, the ammonia in the valve assembly unit is discharged from the valve assembly unit emptying outlet 1.6 through the discharge port C of the first stop valve 1.2. The other end of the valve assembly unit emptying outlet 1.6 is connected to the waste liquid collection tank 4 through a pipeline, and the ammonia discharged from the valve assembly unit 1 can be collected in the waste liquid collection tank 4.
电磁阀1.1为2位3通电磁阀，包括进口A、出口B和泄放口C。电磁阀1.1有两个，一个与第一截止阀1.2相连，另一个与第二截止阀1.3相连，电子控制器3分别与两个电磁阀1.1电连接，可以通过这两个电磁阀1.1对第一截止阀1.2和第二截止阀1.3实现开启和关闭的控制。The solenoid valve 1.1 is a 2-position 3-way solenoid valve, including an inlet A, an outlet B and a discharge port C. There are two solenoid valves 1.1, one connected to the first stop valve 1.2, and the other connected to the second stop valve 1.3. The electronic controller 3 is electrically connected to the two solenoid valves 1.1 respectively, and the first stop valve 1.2 and the second stop valve 1.3 can be opened and closed through the two solenoid valves 1.1.
氮气进口1.7连接有氮气电磁阀1.4，电子控制器3与氮气电磁阀1.4电连接，氮气电磁阀1.4的另一端连接在第二截止阀1.3的出口B之后；可以通过氮气电磁阀1.4实现对氮气吹扫时间的控制。The nitrogen inlet 1.7 is connected to a nitrogen solenoid valve 1.4, the electronic controller 3 is electrically connected to the nitrogen solenoid valve 1.4, and the other end of the nitrogen solenoid valve 1.4 is connected after the outlet B of the second stop valve 1.3; the nitrogen purge time can be controlled by the nitrogen solenoid valve 1.4.
发动机2，包括：氨气喷气阀2.1、气缸2.2、电控柴油喷油泵2.3、透气电磁阀2.4和透气口2.5。氨气喷气阀2.1、气缸2.2和电控柴油喷油泵2.3有多组，组内氨气喷气阀2.1和电控柴油喷油泵2.3分别与气缸2.2相连。The engine 2 comprises: an ammonia injection valve 2.1, a cylinder 2.2, an electronically controlled diesel fuel injection pump 2.3, a venting solenoid valve 2.4 and a venting port 2.5. The ammonia injection valve 2.1, the cylinder 2.2 and the electronically controlled diesel fuel injection pump 2.3 are provided in multiple groups, and the ammonia injection valve 2.1 and the electronically controlled diesel fuel injection pump 2.3 in each group are connected to the cylinder 2.2 respectively.
电子控制器3分别与每组中的氨气喷气阀2.1、电控柴油喷油泵2.3电连接，分别用于对喷入气缸的氨气量和柴油量进行控制。 The electronic controller 3 is electrically connected to the ammonia injection valve 2.1 and the electronically controlled diesel injection pump 2.3 in each group, and is used to control the amount of ammonia and diesel injected into the cylinder respectively.
透气电磁阀2.4设置在发动机2的氨气供气管路末端；电子控制器3与透气电磁阀2.4电连接，用于控制发动机排出的氨气量；透气口2.5与透气电磁阀2.4的出口相连，并通过管路与废液收集池4连通，可以将从发动机2排出的氨气收集至废液收集池4中。The air permeable solenoid valve 2.4 is arranged at the end of the ammonia supply pipeline of the engine 2; the electronic controller 3 is electrically connected to the air permeable solenoid valve 2.4, and is used to control the amount of ammonia discharged from the engine; the air vent 2.5 is connected to the outlet of the air permeable solenoid valve 2.4, and is connected to the waste liquid collection tank 4 through a pipeline, so that the ammonia discharged from the engine 2 can be collected in the waste liquid collection tank 4.
透气口2.5通过管路与废液收集池4连通。经阀组单元排空出口1.6与经透气口2.5排入至废液收集池4的2根管路为独立管路；排入废液收集池4的氨气与其内的水混合形成废液(氨气有毒，不能直接排入大气中)，一定时间后废液统一处理。The vent 2.5 is connected to the waste liquid collection tank 4 through a pipeline. The two pipelines discharged through the valve group unit outlet 1.6 and the vent 2.5 to the waste liquid collection tank 4 are independent pipelines; the ammonia gas discharged into the waste liquid collection tank 4 is mixed with the water therein to form waste liquid (ammonia gas is toxic and cannot be directly discharged into the atmosphere), and the waste liquid is uniformly treated after a certain period of time.
上述发动机2为氨柴油双燃料发动机，可以在全柴油模式下运行，也可以在氨柴油双燃料模式下运行。The engine 2 is an ammonia-diesel dual-fuel engine, which can be operated in a full diesel mode or in an ammonia-diesel dual-fuel mode.
上述氨柴油双燃料发动机的***，可以在电子控制器3的控制下，在发动机从双燃料模式切换至柴油模式时，实现停止氨气供应、将氨气供给管路内的氨气排出并集中收集。The system of the ammonia-diesel dual-fuel engine can, under the control of the electronic controller 3, stop the supply of ammonia, discharge the ammonia in the ammonia supply pipeline and collect it centrally when the engine switches from the dual-fuel mode to the diesel mode.
当氨柴油双燃料发动机的电子控制器3接收到从双燃料模式切换到柴油模式的信号后，按如下控制方法进行操作：When the electronic controller 3 of the ammonia diesel dual-fuel engine receives a signal to switch from the dual-fuel mode to the diesel mode, it operates according to the following control method:
电子控制器3将氨气喷气阀2.1断电，停止向发动机2内的气缸2.2内输送氨气；同时，控制器控制电控柴油喷油泵2.3向气缸2.2内增加柴油喷射量，保证氨燃料供给停止后，发动机运行平稳。The electronic controller 3 cuts off the power to the ammonia injection valve 2.1 and stops delivering ammonia to the cylinder 2.2 in the engine 2; at the same time, the controller controls the electronically controlled diesel injection pump 2.3 to increase the diesel injection amount into the cylinder 2.2 to ensure that the engine runs smoothly after the ammonia fuel supply stops.
电子控制器3将2个电磁阀1.1断电，电磁阀1.1内的AB通路断开，BC通路连通，将第一截止阀1.2和第二截止阀1.3的上腔体内的氨气由电磁阀1.1内的BC通路，经阀组单元排空出口1.6排入至废液收集池4，同时第一截止阀1.2和第二截止阀1.3因上腔体失去压力，导致A、B通路断开。The electronic controller 3 cuts off the power to the two solenoid valves 1.1, disconnects the AB passage in the solenoid valve 1.1, and connects the BC passage, so that the ammonia in the upper cavity of the first stop valve 1.2 and the second stop valve 1.3 is discharged from the BC passage in the solenoid valve 1.1 to the waste liquid collection tank 4 through the valve group unit exhaust outlet 1.6. At the same time, the first stop valve 1.2 and the second stop valve 1.3 lose pressure in the upper cavity, resulting in disconnection of the A and B passages.
进一步地，由于第一截止阀1.2和第二截止阀1.3的上腔体内的氨气已经排出，第一截止阀1.2和第二截止阀1.3的AB通路断开后，第一截止阀1.2的BC通路连通，将第一截止阀1.2的B口和第二截止阀1.3的A口之间存留的氨气，经阀组单元排空出口1.6排入至废液收集池4。Furthermore, since the ammonia in the upper cavities of the first stop valve 1.2 and the second stop valve 1.3 has been discharged, after the AB passages of the first stop valve 1.2 and the second stop valve 1.3 are disconnected, the BC passage of the first stop valve 1.2 is connected, and the ammonia remaining between the B port of the first stop valve 1.2 and the A port of the second stop valve 1.3 is discharged into the waste liquid collection tank 4 through the valve group unit exhaust outlet 1.6.
同时，电子控制器3将透气电磁阀2.4断电，将第二截止阀1.3的B口与透气电磁阀2.4之间的管路内存留的氨气经透气口2.5排入至废液收集池4。 At the same time, the electronic controller 3 cuts off the power to the vent solenoid valve 2.4, and discharges the ammonia gas remaining in the pipeline between the B port of the second stop valve 1.3 and the vent solenoid valve 2.4 into the waste liquid collection tank 4 through the vent port 2.5.
透气电磁阀2.4断电1s后，电子控制器3将氮气电磁阀1.4断电打开，氮气经氮气进口1.7进入第二截止阀1.3后的氨气管路，将其内残留的氨气经透气电磁阀2.4、透气口2.5排入至废液收集池4。After the ventilation solenoid valve 2.4 is powered off for 1 second, the electronic controller 3 turns off the power to open the nitrogen solenoid valve 1.4, and the nitrogen enters the ammonia pipeline behind the second stop valve 1.3 through the nitrogen inlet 1.7, and the residual ammonia in it is discharged into the waste liquid collection tank 4 through the ventilation solenoid valve 2.4 and the ventilation port 2.5.
10s后，电子控制器3将氮气电磁阀1.4和透气电磁阀2.4上电关闭。After 10 seconds, the electronic controller 3 powers on and closes the nitrogen solenoid valve 1.4 and the air permeability solenoid valve 2.4.
氮气进口1.7处的氮气压力要比氨气喷气阀2.1的最大氨气喷射压力高1-2bar。The nitrogen pressure at the nitrogen inlet 1.7 is 1-2 bar higher than the maximum ammonia injection pressure of the ammonia injection valve 2.1.
上述实施例中，实现了氨柴油双燃料发动机从双燃料模式到柴油模式的切换，保证了发动机安全、平稳运行。In the above embodiment, the switching of the ammonia-diesel dual-fuel engine from the dual-fuel mode to the diesel mode is achieved, thereby ensuring the safe and stable operation of the engine.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

  1. 一种氨柴油双燃料发动机的***，其特征在于，所述***包括：阀组单元(1)、发动机(2)、电子控制器(3)和废液收集池(4)；A system for an ammonia-diesel dual-fuel engine, characterized in that the system comprises: a valve group unit (1), an engine (2), an electronic controller (3) and a waste liquid collection tank (4);
    所述电子控制器(3)分别与所述阀组单元(1)和所述发动机(2)中的电控部件电连接，控制所述阀组单元(1)和所述发动机(2)中各部件动作；所述阀组单元(1)和所述发动机(2)分别与所述废液收集池(4)连通，在所述电子控制器(3)的控制下将氨气排出至所述废液收集池(4)。The electronic controller (3) is electrically connected to the electronic control components in the valve assembly unit (1) and the engine (2) respectively, and controls the operation of the components in the valve assembly unit (1) and the engine (2); the valve assembly unit (1) and the engine (2) are respectively connected to the waste liquid collection tank (4), and ammonia is discharged to the waste liquid collection tank (4) under the control of the electronic controller (3).
  2. 根据权利要求1所述的一种氨柴油双燃料发动机的***，其特征在于，所述阀组单元(1)，包括：电磁阀(1.1)、第一截止阀(1.2)、第二截止阀(1.3)、氮气电磁阀(1.4)、氨气进口(1.5)、阀组单元排空出口(1.6)和氮气进口(1.7)；The system of an ammonia diesel dual-fuel engine according to claim 1, characterized in that the valve group unit (1) comprises: a solenoid valve (1.1), a first stop valve (1.2), a second stop valve (1.3), a nitrogen solenoid valve (1.4), an ammonia inlet (1.5), a valve group unit exhaust outlet (1.6) and a nitrogen inlet (1.7);
    所述电磁阀(1.1)为2位3通电磁阀，包括进口A、出口B和泄放口C；The solenoid valve (1.1) is a 2-position 3-way solenoid valve, comprising an inlet A, an outlet B and a discharge port C;
    所述第一截止阀(1.2)为三通截止阀，包括进口A、出口B和泄放口C；The first stop valve (1.2) is a three-way stop valve, comprising an inlet A, an outlet B and a discharge port C;
    所述第二截止阀(1.3)为二通截止阀，包括进口A和出口B；所述氨气进口(1.5)连接所述第一截止阀(1.2)的进口A，所述第一截止阀(1.2)的出口B与所述第二截止阀(1.3)的进口A连接；所述第二截止阀(1.3)的出口B与发动机(2)连接；The second stop valve (1.3) is a two-way stop valve, comprising an inlet A and an outlet B; the ammonia inlet (1.5) is connected to the inlet A of the first stop valve (1.2), and the outlet B of the first stop valve (1.2) is connected to the inlet A of the second stop valve (1.3); the outlet B of the second stop valve (1.3) is connected to the engine (2);
    所述阀组单元排空出口(1.6)连接所述第一截止阀(1.2)的泄放口C；所述阀组单元排空出口(1.6)还与2个电磁阀(1.1)的泄放口C相连；The valve assembly unit drain outlet (1.6) is connected to the discharge port C of the first stop valve (1.2); the valve assembly unit drain outlet (1.6) is also connected to the discharge ports C of the two solenoid valves (1.1);
    所述电磁阀(1.1)有两个，一个与所述第一截止阀(1.2)相连，另一个与所述第二截止阀(1.3)相连，所述电子控制器(3)分别与两个电磁阀(1.1)电连接；There are two solenoid valves (1.1), one connected to the first stop valve (1.2), and the other connected to the second stop valve (1.3); the electronic controller (3) is electrically connected to the two solenoid valves (1.1) respectively;
    所述氮气进口(1.7)连接有所述氮气电磁阀(1.4)，所述电子控制器(3)与所述氮气电磁阀(1.4)电连接；所述氮气电磁阀(1.4)的另一端连接在所述第二截止阀(1.3)的出口B之后；The nitrogen inlet (1.7) is connected to the nitrogen solenoid valve (1.4), and the electronic controller (3) is electrically connected to the nitrogen solenoid valve (1.4); the other end of the nitrogen solenoid valve (1.4) is connected after the outlet B of the second stop valve (1.3);
    阀组单元排空出口(1.6)通过管路与废液收集池(4)连通。The valve assembly unit drain outlet (1.6) is connected to the waste liquid collection tank (4) through a pipeline.
  3. 根据权利要求2所述的一种氨柴油双燃料发动机的***，其特征在于， 所述发动机(2)，包括：氨气喷气阀(2.1)、气缸(2.2)、电控柴油喷油泵(2.3)、透气电磁阀(2.4)和透气口(2.5)；The system of an ammonia diesel dual fuel engine according to claim 2, characterized in that: The engine (2) comprises: an ammonia injection valve (2.1), a cylinder (2.2), an electronically controlled diesel fuel injection pump (2.3), a venting solenoid valve (2.4) and a venting port (2.5);
    所述氨气喷气阀(2.1)和所述电控柴油喷油泵(2.3)分别与所述气缸(2.2)相连；The ammonia injection valve (2.1) and the electronically controlled diesel injection pump (2.3) are respectively connected to the cylinder (2.2);
    所述电子控制器(3)分别与所述氨气喷气阀(2.1)、所述电控柴油喷油泵(2.3)电连接；The electronic controller (3) is electrically connected to the ammonia injection valve (2.1) and the electronically controlled diesel injection pump (2.3) respectively;
    所述透气电磁阀(2.4)设置在发动机(2)的氨气供气管路末端，所述电子控制器(3)与所述透气电磁阀(2.4)电连接；The venting solenoid valve (2.4) is arranged at the end of the ammonia gas supply pipeline of the engine (2), and the electronic controller (3) is electrically connected to the venting solenoid valve (2.4);
    所述透气口(2.5)与透气电磁阀(2.4)的出口相连，并通过管路与所述废液收集池(4)连通。The vent (2.5) is connected to the outlet of the vent solenoid valve (2.4) and is connected to the waste liquid collection pool (4) through a pipeline.
  4. 根据权利要求3所述的一种氨柴油双燃料发动机的***，其特征在于，经所述阀组单元排空出口(1.6)与经所述透气口(2.5)排入至废液收集池(4)的2根管路为独立管路。The system of an ammonia-diesel dual-fuel engine according to claim 3 is characterized in that the two pipelines through the valve group unit exhaust outlet (1.6) and the two pipelines through the air vent (2.5) that discharge into the waste liquid collection tank (4) are independent pipelines.
  5. 根据权利要求1所述的一种氨柴油双燃料发动机的***，其特征在于，氨气喷气阀(2.1)、气缸(2.2)和电控柴油喷油泵(2.3)有多组，组内氨气喷气阀(2.1)和电控柴油喷油泵(2.3)分别与气缸(2.2)相连；电子控制器(3)分别与每组中的氨气喷气阀(2.1)、电控柴油喷油泵(2.3)电连接。The system of an ammonia diesel dual-fuel engine according to claim 1 is characterized in that there are multiple groups of ammonia injection valves (2.1), cylinders (2.2) and electronically controlled diesel fuel injection pumps (2.3), and the ammonia injection valves (2.1) and electronically controlled diesel fuel injection pumps (2.3) in each group are respectively connected to the cylinders (2.2); and the electronic controller (3) is electrically connected to the ammonia injection valves (2.1) and electronically controlled diesel fuel injection pumps (2.3) in each group.
  6. 根据权利要求1所述的一种氨柴油双燃料发动机的***，其特征在于，排入所述废液收集池(4)的氨气与其内的水混合形成废液，预定时间后废液统一处理。The system of an ammonia diesel dual-fuel engine according to claim 1 is characterized in that the ammonia gas discharged into the waste liquid collection tank (4) is mixed with the water therein to form waste liquid, and the waste liquid is uniformly treated after a predetermined time.
  7. 根据权利要求3所述的一种氨柴油双燃料发动机的***，其特征在于，所述氮气进口(1.7)处的氮气压力比所述氨气喷气阀(2.1)的最大氨气喷射压力高1-2bar。The system of an ammonia diesel dual-fuel engine according to claim 3 is characterized in that the nitrogen pressure at the nitrogen inlet (1.7) is 1-2 bar higher than the maximum ammonia injection pressure of the ammonia injection valve (2.1).
  8. 一种氨柴油双燃料发动机的控制方法，其特征在于，应用于权利要求1～7任一项所述的氨柴油双燃料发动机的***，当所述电子控制器(3)接收到从氨柴油双燃料模式切换到柴油模式的信号后，按如下控制方法进行操作：A control method for an ammonia diesel dual-fuel engine, characterized in that the system is applied to the ammonia diesel dual-fuel engine according to any one of claims 1 to 7, and when the electronic controller (3) receives a signal to switch from the ammonia diesel dual-fuel mode to the diesel mode, the control method is operated as follows:
    电子控制器(3)将氨气喷气阀(2.1)断电，停止向发动机(2)内的气 缸(2.2)内输送氨气；同时，控制器控制电控柴油喷油泵(2.3)向气缸(2.2)内增加柴油喷射量，保证氨燃料供给停止后，发动机运行平稳；The electronic controller (3) cuts off the power to the ammonia injection valve (2.1) to stop the gas injection into the engine (2). Ammonia is delivered into the cylinder (2.2); at the same time, the controller controls the electronically controlled diesel injection pump (2.3) to increase the amount of diesel injection into the cylinder (2.2), ensuring that the engine runs smoothly after the ammonia fuel supply stops;
    电子控制器(3)将2个电磁阀(1.1)断电，电磁阀(1.1)内的AB通路断开，BC通路连通，将第一截止阀(1.2)和第二截止阀(1.3)的上腔体内的氨气由电磁阀(1.1)内的BC通路，经阀组单元排空出口(1.6)排入至废液收集池(4)，同时第一截止阀(1.2)和第二截止阀(1.3)因上腔体失去压力，导致A、B通路断开；The electronic controller (3) cuts off the power to the two solenoid valves (1.1), disconnects the AB passage in the solenoid valve (1.1), connects the BC passage, and discharges the ammonia in the upper chambers of the first stop valve (1.2) and the second stop valve (1.3) from the BC passage in the solenoid valve (1.1) through the valve assembly unit exhaust outlet (1.6) into the waste liquid collection tank (4). At the same time, the A and B passages of the first stop valve (1.2) and the second stop valve (1.3) are disconnected due to the loss of pressure in the upper chambers;
    电子控制器(3)将透气电磁阀(2.4)断电，将第二截止阀(1.3)的出口B与透气电磁阀(2.4)之间的管路内存留的氨气经透气口(2.5)排入至废液收集池(4)。The electronic controller (3) cuts off the power supply of the vent electromagnetic valve (2.4), and discharges the ammonia gas remaining in the pipeline between the outlet B of the second stop valve (1.3) and the vent electromagnetic valve (2.4) into the waste liquid collection tank (4) through the vent port (2.5).
  9. 根据权利要求8所述的一种氨柴油双燃料发动机的控制方法，其特征在于，第一截止阀(1.2)和第二截止阀(1.3)的AB通路断开后，第一截止阀(1.2)的BC通路连通，将第一截止阀(1.2)的出口B和第二截止阀(1.3)的进口A之间存留的氨气，经阀组单元排空出口(1.6)排入至废液收集池(4)。The control method of an ammonia-diesel dual-fuel engine according to claim 8 is characterized in that after the AB passages of the first stop valve (1.2) and the second stop valve (1.3) are disconnected, the BC passage of the first stop valve (1.2) is connected, and the ammonia gas remaining between the outlet B of the first stop valve (1.2) and the inlet A of the second stop valve (1.3) is discharged into the waste liquid collection tank (4) through the valve group unit exhaust outlet (1.6).
  10. 根据权利要求8所述的一种氨柴油双燃料发动机的控制方法，其特征在于，透气电磁阀(2.4)断电1s后，电子控制器(3)将氮气电磁阀(1.4)断电打开，氮气经氮气进口(1.7)进入第二截止阀(1.3)后的氨气管路，将其内残留的氨气经透气电磁阀(2.4)、透气口(2.5)排入至废液收集池(4)。 According to the control method of an ammonia diesel dual-fuel engine as described in claim 8, it is characterized in that, after the ventilation solenoid valve (2.4) is powered off for 1 second, the electronic controller (3) turns off the power to the nitrogen solenoid valve (1.4) and opens it, and the nitrogen enters the ammonia pipeline after the second stop valve (1.3) through the nitrogen inlet (1.7), and the residual ammonia in the pipeline is discharged into the waste liquid collection tank (4) through the ventilation solenoid valve (2.4) and the ventilation port (2.5).
PCT/CN2023/127169 2022-12-07 2023-10-27 System of ammonia-diesel dual-fuel engine, and control method therefor WO2024120047A1 (en)

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Publication number Priority date Publication date Assignee Title
CN115853641A (en) * 2022-12-07 2023-03-28 中车大连机车车辆有限公司 Ammonia diesel dual-fuel engine system and control method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696289A (en) * 2020-12-28 2021-04-23 大连船舶重工集团有限公司 Marine liquid ammonia fuel supply and fuel recycle system
CN216198533U (en) * 2021-02-05 2022-04-05 大连船舶重工集团有限公司 Gas-liquid separation device of marine liquid ammonia fuel system
CN114294128A (en) * 2021-12-27 2022-04-08 石荣明 A ventilative mast system that is used for ammonia fuel boats and ships to contain ammonia and concentrates catching
CN114776443A (en) * 2022-03-22 2022-07-22 清华大学 Ammonia gas-diesel oil dual-fuel engine and combustion control method thereof
CN114837858A (en) * 2022-04-14 2022-08-02 中国船舶重工集团柴油机有限公司 Marine liquid ammonia fuel storage, filling and supply system
KR20220147768A (en) * 2021-04-27 2022-11-04 한국조선해양 주식회사 Vessel using ammonia as fuel
CN115853641A (en) * 2022-12-07 2023-03-28 中车大连机车车辆有限公司 Ammonia diesel dual-fuel engine system and control method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696289A (en) * 2020-12-28 2021-04-23 大连船舶重工集团有限公司 Marine liquid ammonia fuel supply and fuel recycle system
CN216198533U (en) * 2021-02-05 2022-04-05 大连船舶重工集团有限公司 Gas-liquid separation device of marine liquid ammonia fuel system
KR20220147768A (en) * 2021-04-27 2022-11-04 한국조선해양 주식회사 Vessel using ammonia as fuel
CN114294128A (en) * 2021-12-27 2022-04-08 石荣明 A ventilative mast system that is used for ammonia fuel boats and ships to contain ammonia and concentrates catching
CN114776443A (en) * 2022-03-22 2022-07-22 清华大学 Ammonia gas-diesel oil dual-fuel engine and combustion control method thereof
CN114837858A (en) * 2022-04-14 2022-08-02 中国船舶重工集团柴油机有限公司 Marine liquid ammonia fuel storage, filling and supply system
CN115853641A (en) * 2022-12-07 2023-03-28 中车大连机车车辆有限公司 Ammonia diesel dual-fuel engine system and control method thereof

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