Engine and control method thereof, vehicle and storage medium

Abstract

The embodiment of the invention provides an engine and a control method thereof, a vehicle and a storage medium. The engine comprises an engine body and a first water sprayer; a combustion chamber is arranged in the machine body, and a combustion cavity is defined by the combustion chamber; the pre-combustion chamber is located in the combustion cavity; wherein the first water sprayer is located on the outer side of the pre-combustion chamber and located in the combustion cavity, the pre-combustion chamber is located in the water spraying direction of the first water sprayer, and the first water sprayer is used for spraying water to the pre-combustion chamber. According to the embodiment of the invention, the first water sprayer can be used for spraying water to the outer side of the pre-combustion chamber so as to clean deposited carbon.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle internal combustion engine technology, in particular to an engine, a control method of the engine, a vehicle and a storage medium. BACKGROUND

[0002] The water injection technology of the engine sprays circulating water to the air intake pipe during the working process of the engine, which cools the internal parts of the cylinder and the working medium to a certain extent, controls the combustion process to suppress knocking, further advances the ignition time, widens the working boundary of the engine, improves the efficiency and fuel economy of the engine, and the reduction of combustion temperature is also conducive to reducing the generation of nitrogen oxides. At the same time, injecting superheated water into the cylinder can also add additional working medium to the closed combustion chamber, and the superheated water vaporizes in a short time to push the piston to work.

[0003] When the nozzle of the water injector in the current engine with water injection technology is located in the air intake port of the intake manifold, it is easy to cause uneven water distribution of each cylinder, which affects the consistency of the engine operation. It is unable to achieve rapid and accurate adjustment of the engine operating conditions. SUMMARY

[0004] In view of the above problems, the embodiments of the present application are proposed to provide an engine, a control method of the engine, a vehicle and a storage medium which overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above problems, the embodiments of the present application disclose an engine, comprising: a body and a first water injector; the body is provided with:

[0006] a combustion chamber, the combustion chamber surrounds a combustion cavity;

[0007] a pre-chamber located in the combustion cavity;

[0008] Wherein, the first water injector is located outside the pre-chamber and in the combustion cavity, the pre-chamber is located in the water injection direction of the first water injector, and the first water injector is used for injecting water into the pre-chamber.

[0009] Optionally, the pre-chamber comprises:

[0010] a spark plug;

[0011] a pre-chamber shell surrounding a pre-chamber cavity; the spark plug is arranged in the pre-chamber cavity, and a jet nozzle is formed in the pre-chamber shell, and the pre-chamber cavity is communicated with the combustion cavity through the jet nozzle.

[0012] Optionally, the jet nozzle is constricted along its jet direction.

[0013] Optionally, further comprising: an intake manifold connected to the engine block and in communication with the combustion chamber;

[0014] A second water injector is located in the intake manifold for injecting water into the intake manifold.

[0015] Optionally, further comprising:

[0016] A water supply assembly is connected to the first water injector and the second water injector for supplying water to the first water injector and the second water injector.

[0017] Optionally, the water supply assembly comprises:

[0018] A first water supply component is connected to the first water injector for supplying water to the first water injector;

[0019] A second water supply component is connected to the second water injector for supplying water to the second water injector; wherein the pressure of the first water supply component is greater than the pressure of the second water supply component.

[0020] A water storage tank is connected to the first water supply component and the second water supply component.

[0021] Optionally, the water supply assembly further comprises:

[0022] A water level gauge is located inside the water storage tank for detecting the liquid level of the water storage tank;

[0023] And / or a water quality detector is connected to the bottom of the water storage tank for detecting the water quality state of the water storage tank;

[0024] And / or a filter is connected to the water storage tank for filtering impurities in the water in the water storage tank.

[0025] Optionally, the first water supply component comprises:

[0026] A first water pump is located between the water storage tank and the first water injector for pressurizing and delivering water in the water storage tank to the first water injector; and / or;

[0027] The second water supply component comprises:

[0028] A second water pump is located between the water storage tank and the second water injector for pressurizing and delivering water in the water storage tank to the second water injector.

[0029] Optionally, the included angle between the water injection direction of the first water injector and the axis of the pre-chamber is 50-130 degrees.

[0030] Optionally, the first water injector and the pre-chamber are respectively located on both sides of the axis of the combustion chamber.

[0031] Optionally, an axis of the combustion chamber forms a first included angle with a water spraying direction of the first water sprayer, and / or the axis of the combustion chamber forms a second included angle with an axis of the pre-chamber.

[0032] The engine control method disclosed by the embodiments of the present application comprises:

[0033] acquiring vehicle working condition data;

[0034] controlling the first water sprayer to spray water based on the vehicle working condition data.

[0035] Optionally, the vehicle working condition data comprises a crankshaft position and an engine load; and the step of controlling the first water sprayer to spray water based on the vehicle working condition data comprises:

[0036] controlling the first water sprayer to spray water according to the crankshaft position and the engine load.

[0037] Optionally, the step of controlling the first water sprayer to spray water according to the crankshaft position and the engine load comprises:

[0038] controlling the first water sprayer to spray water when the crankshaft position is in an intake position region and the engine load is a medium load; or,

[0039] controlling the first water sprayer to spray water when the crankshaft position is in an intake position region and the engine load is a large load; or,

[0040] controlling the first water sprayer to spray water when the crankshaft position is in a compression position region and the engine load is a large load; or,

[0041] controlling the first water sprayer to spray water when the crankshaft position is in an exhaust position region and the engine load is a large load.

[0042] Optionally, the engine further comprises: an intake manifold connected with the engine body; and a second water sprayer located in the intake manifold; and the method further comprises:

[0043] controlling the second water sprayer to spray water based on the vehicle working condition data.

[0044] Optionally, the vehicle operating data includes the crankshaft position; the step of controlling the second water injector to spray water based on the vehicle operating data includes:

[0045] The second water sprayer is controlled to spray water based on the crankshaft position.

[0046] Optionally, the step of controlling the second water sprayer to spray water based on the crankshaft position includes:

[0047] When the crankshaft is in the intake position region, or the compression position region, or the exhaust position region, the second water injector is controlled to spray water.

[0048] A vehicle comprising the engine described above.

[0049] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the engine control method described above.

[0050] The embodiments of the present invention have the following advantages:

[0051] The engine of this invention includes an engine block and a first water injector. The engine block contains a combustion chamber that forms a combustion cavity. A pre-combustion chamber is located within the combustion cavity. The first water injector is located outside the pre-combustion chamber and within the combustion cavity. The pre-combustion chamber is located in the spray direction of the first water injector, and the first water injector is used to spray water into the pre-combustion chamber. By placing the first water injector outside the pre-combustion chamber and within the combustion cavity, direct water injection into the engine block is achieved, ensuring uniform water distribution in each cylinder of the cylinder block, ensuring consistent engine operation, and maximizing lean combustion potential, increasing the compression ratio, and reducing the possibility of knocking and pre-ignition. Furthermore, direct injection into the engine block allows water to be sprayed at any time as needed, enabling rapid and precise adjustment of engine operating conditions. Since the pre-combustion chamber is located in the spray direction of the first water injector, water can be sprayed onto the outside of the pre-combustion chamber using the first water injector to clean carbon deposits. Attached Figure Description

[0052] Figure 1 This is a structural schematic diagram of an embodiment of the engine of the present invention;

[0053] Figure 2 This is a flowchart illustrating the steps of an embodiment of the engine control method of the present invention;

[0054] Figure 3 This is a schematic diagram of a water spray strategy according to an embodiment of the engine control method of the present invention;

[0055] Figure 4 This is a schematic diagram of a second water spray strategy according to an embodiment of the engine control method of the present invention;

[0056] Figure 5 This is a schematic diagram of the water spray strategy of an embodiment of the engine control method of the present invention;

[0057] Figure 6 This is a structural block diagram of an embodiment of a computer-readable storage medium according to the present invention.

[0058] Explanation of reference numerals in the attached drawings: 100-body, 200-combustion chamber, 300-pre-combustion chamber, 310-spark plug, 320-pre-combustion chamber shell, 321-pre-combustion cavity, 330-jet nozzle, 400-first water sprayer, 500-second water sprayer, 600-water supply assembly, 610-first water supply component, 611-first water pump, 620-second water supply component, 621-second water pump, 630-water tank, 640-water level gauge, 650-water quality detector, 660-filter, 700-intake manifold, 800-electronic control unit. Detailed Implementation

[0059] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] Reference Figure 1 The diagram illustrates a structural schematic of an engine embodiment of the present invention, which may specifically include the following parts: an engine body 100 and a first water injector 400; the engine body 100 is provided with:

[0061] Combustion chamber 200, the combustion chamber forming a combustion cavity;

[0062] The pre-combustion chamber 300 is located within the combustion chamber;

[0063] The first water sprayer 400 is located outside the pre-combustion chamber 300 and inside the combustion chamber. The pre-combustion chamber 300 is located in the water spraying direction of the first water sprayer 400. The first water sprayer 400 is used to spray water into the pre-combustion chamber 300.

[0064] In this embodiment of the invention, the engine block 100 is the main body of the engine, connecting the cylinders and crankcase into one unit, and serving as a supporting frame for mounting pistons, crankshafts, and other parts and accessories. Specifically, the engine block 100 may include a cylinder head and a cylinder block connected to each other. The cylinder head seals the cylinders within the engine block 100. A combustion chamber 200 and a pre-combustion chamber 300 are formed within the engine block 100. The combustion chamber 200 encloses a combustion cavity. The pre-combustion chamber 300 is located within the combustion cavity and communicates with it. The combustible mixture burns in the combustion cavity of the combustion chamber 200, generating heat power, which drives the pistons, crankshafts, etc., to output power outwards. The pre-combustion chamber 300 first ignites the combustible mixture within itself, and then injects a high-temperature, high-pressure flame into the combustion chamber 200 to ignite the combustible mixture within the combustion chamber 200, achieving lean combustion and improving fuel efficiency. The pre-combustion chamber 300 can be either an active or passive intake pre-combustion chamber 300. The active intake pre-combustion chamber 300 preheats the air before combustion, thereby improving combustion conditions, increasing combustion efficiency and thrust, and ultimately enhancing the overall engine performance. Furthermore, by adding additional fuel, the active pre-combustion chamber 300 accelerates combustion, reduces heat loss, and suppresses knocking, all of which contribute to improving the thermal efficiency of the gasoline engine. The passive intake pre-combustion chamber 300 utilizes the pressure difference between the pre-combustion chamber 300 and the combustion chamber 200 to achieve gas exchange, which helps to advance the combustion phase, thereby improving combustion stability and reducing fuel consumption. Moreover, ignition using the passive pre-combustion chamber 300 can mitigate the tendency for knocking.

[0065] The first water sprayer 400 is located outside the pre-combustion chamber 300 and inside the combustion chamber, directly spraying water into the combustion chamber 200. The pre-combustion chamber 300 is located in the spray direction of the first water sprayer 400. The first water sprayer 400 can spray directly into the engine block 100. The water sprayed by the first water sprayer 400 is sprayed onto the pre-combustion chamber 300 based on the spray direction, thereby achieving water spraying of the pre-combustion chamber 300, reducing the occurrence of knock, and reducing carbon deposits by flushing the pre-combustion chamber 300.

[0066] The angle at which the pre-combustion chamber 300 is inserted into the cylinder body can be determined according to actual needs, and this embodiment of the invention does not impose a specific limitation. In one example of the invention, to more conveniently remove carbon buildup on the surface of the pre-combustion chamber 300, the angle between the pre-combustion chamber 300 and the first water sprayer 400 is in the range of 50-130 degrees. That is, the angle between the axis of the first water sprayer 400 and the axis of the pre-combustion chamber 300 is 50-130 degrees. The axis of the pre-combustion chamber 300 is the centerline of the pre-combustion chamber 300 along its length.

[0067] Furthermore, the axis of the combustion chamber forms a first angle with the spray direction of the first water injector 400, and / or, the axis of the combustion chamber forms a second angle with the axis of the pre-combustion chamber 300. The first angle represents the angle at which the first water injector 400 is inserted into the combustion chamber, and the magnitude of the first angle can be determined according to actual conditions. The second angle represents the angle of the pre-combustion chamber 300 in the combustion chamber. When the angle of the pre-combustion chamber 300 in the combustion chamber is zero, that is, when the pre-combustion chamber 300 is concentric with the combustion chamber, the magnitude of the second angle can be determined according to actual conditions.

[0068] The first water injector 400 is installed inside the combustion chamber 200 to achieve direct water injection into the engine block 100, ensuring uniform water distribution in each cylinder of the cylinder block, ensuring consistent engine operation, and further realizing lean combustion potential, increasing the compression ratio, and reducing the possibility of knocking and pre-ignition. Moreover, direct injection into the engine block 100 allows water to be sprayed at any time as needed, thereby enabling rapid and precise adjustment of engine operating conditions. Furthermore, the pre-combustion chamber 300 is located in the water spray direction of the first water injector 400, allowing the first water injector 400 to spray water onto the outside of the pre-combustion chamber 300 to clean carbon deposits.

[0069] Furthermore, the pre-combustion chamber 300 includes:

[0070] Spark plug 310,

[0071] The pre-combustion chamber shell 320 surrounds the pre-combustion cavity 321; the spark plug 310 is located inside the pre-combustion cavity 321; the pre-combustion chamber shell 320 is provided with a jet nozzle 330; the pre-combustion cavity 321 is connected to the combustion cavity through the jet nozzle 330.

[0072] In an embodiment of the invention, the pre-combustion chamber 300 can be a passive pre-combustion chamber 300. The pre-combustion chamber 300 includes a spark plug 310 and a pre-combustion chamber housing 320. A pre-combustion cavity 321 is formed inside the pre-combustion chamber housing 320. The spark plug 310 can be threaded into the pre-combustion chamber housing 320, so that the ignition side of the spark plug 310 is located inside the pre-combustion chamber housing 320 and connected to the pre-combustion cavity 321, thereby igniting the combustible mixture in the pre-combustion cavity 321. The spark plug 310 can introduce high-voltage electricity into the pre-combustion cavity 321, causing it to bypass the electrode gap and generate a spark, thereby igniting the combustible mixture in the pre-combustion cavity 321. Specifically, under the action of high voltage, the air between the center electrode and the side electrode of the spark plug 310 will rapidly ionize, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain value, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties and forming a discharge channel in the gap, resulting in voltage breakdown. At this time, the gas forms a luminescent body, i.e., a spark. Accompanied by the spark's thermal expansion, it ignites the air-fuel mixture in the cylinder pre-combustion chamber 321. The ignition timing and pulse width of the spark plug 310 can be controlled by the vehicle's ECU (Electronic Control Unit).

[0073] The pre-combustion chamber 321 is connected to the ignition side of the spark plug 310 and communicates with the combustion chamber through the jet nozzle 330, meaning the pre-combustion chamber 321 outputs flames outward through the jet nozzle 330. The output direction of the pre-combustion chamber 321 is directed towards the cylinder of the cylinder block, thereby causing the flame in the pre-combustion chamber 321 to be injected into the cylinder block through the jet nozzle 330, igniting the combustible mixture in the combustion chamber 200, and enabling the engine to output power.

[0074] To achieve a longer jet flame penetration distance, the geometry of the pre-combustion chamber 321 in the direction pointing towards the cylinder, i.e., along the output direction, is constricted. By constricting the shape along the output direction of the pre-combustion chamber 321, the pressure during flame ejection increases, thereby extending the jet flame penetration distance.

[0075] Furthermore, the arrangement of the jet nozzle 330 along the central axis can be symmetrical or asymmetrical, and can be determined according to the piston shape, cylinder shape and pre-combustion chamber 300 angle. This embodiment of the invention does not impose specific limitations on this.

[0076] In an optional embodiment of the present invention, the engine further includes an intake manifold 700 connected to the engine block 100.

[0077] The second water sprayer 500 is located in the intake manifold 700 and is used to spray water in the intake manifold 700.

[0078] In this embodiment of the invention, a second water sprayer 500 may also be provided in the intake manifold 700. The second water sprayer 500 can spray water in the intake manifold 700, which can remove carbon buildup on the intake valve surface, reduce intake air temperature, and increase water content.

[0079] In an optional embodiment of the present invention, the water jet engine further includes a water supply assembly 600, connected to the first water jet 400 and the second water jet 500, for supplying water to the first water jet 400 and the second water jet 500.

[0080] The water supply assembly 600 is connected to the first sprayer 400 and the second sprayer 500, and the pipelines between the water supply assembly 600 and the first sprayer 400, and between the water supply assembly 600 and the second sprayer 500, are connected. The water supply assembly 600 can supply water to the first sprayer 400 and the second sprayer 500, which spray water at their respective installation positions when needed to achieve the corresponding functions.

[0081] Specifically, the water supply component 600 includes:

[0082] The first water supply component 610 is connected to the first water sprayer 400 and is used to supply water to the first water sprayer 400.

[0083] The second water supply component 620 is connected to the second water sprayer 500 and is used to supply water to the second water sprayer 500; wherein, the pressure of the first water supply component 610 is greater than the pressure of the second water supply component 620.

[0084] The water storage tank 630 is connected to the first water supply component 610 and the second water supply component 620.

[0085] In this embodiment of the invention, the water supply assembly 600 includes at least a first water supply component 610, a second water supply component 620, and a water storage tank 630. The pressure of the first water supply component 610 is greater than the pressure of the second water supply component 620. Specifically, the first water injector 400 is connected to the first water supply component 610, which pressurizes water to a higher pressure and supplies it to the first water injector 400, allowing the first water injector 400 to spray high-pressure water outwards. In practical applications, the pressurization pressure of the first water supply component 610 is greater than 200 Pa, so that the pressurized high-pressure water can be sprayed into the combustion chamber. Correspondingly, the second water injector 500 is connected to the second water supply component 620, which pressurizes water to a lower pressure than that of the first water supply component 610 and supplies it to the second water injector 500, allowing the second water injector 500 to spray low-pressure water outwards. This allows for the spraying of water at different pressures at different locations, enabling different control of the engine. The pressurization range of the second water supply component 620 can be 5-10 Pa, so that the second water sprayer 500 can spray water into the air intake manifold.

[0086] In addition, to obtain the water level in the water storage tank 630 in real time for spray control, the water supply assembly 600 also includes a water level gauge 640, located inside the water storage tank 630, for detecting the liquid level in the water storage tank 630.

[0087] Furthermore, in order to control the first water sprayer 400 and the second water sprayer 500, an electronic control unit 800 can be set up. The water spray volume and water spray pulse duration of the first water sprayer 400 and the second water sprayer 500 can be controlled by the signals sent by the electronic control unit 800.

[0088] A water level gauge 640 is installed inside the water storage tank 630 to detect the liquid level height of the water storage tank 630. The type of water level gauge 640 is not specifically limited in this embodiment of the invention. For example, the water level gauge 640 can be a float-type water level gauge 640, a pressure-type water level gauge 640, etc. The float-type water level gauge 640 measures the liquid level height by utilizing the buoyancy of a float. The float rises or falls with the liquid level, and the liquid level height is determined by the position of the float. The pressure-type water level gauge 640 measures the liquid level height by utilizing the pressure of the liquid. The liquid level height is determined by measuring the change in liquid pressure. In one example of the invention, such as... Figure 1 As shown, the water level gauge 640 can be a float-type water level gauge 640.

[0089] Furthermore, since the water is directly sprayed into the cylinder and participates directly in the combustion process, a water quality detector 650 can be installed to detect the water quality status in order to avoid damage to the cylinder. Specifically, the water supply assembly 600 also includes a water quality detector 650, which is connected to the bottom of the water storage tank 630 and is used to detect the water quality status of the water storage tank 630.

[0090] Since impurities mostly accumulate in the form of sediment, a water quality detector 650 is connected to the bottom of the water storage tank 630. By detecting the water at the bottom of the water storage tank 630, the water quality in the water storage tank 630 can be determined.

[0091] Furthermore, in order to filter the water in the water tank 630 and remove impurities to protect the water jet engine from damage, the water supply assembly 600 also includes:

[0092] The filter 660 is connected to the water storage tank 630 and is used to filter impurities in the water in the water storage tank 630.

[0093] The filter 660 can be a coarse filter to filter larger impurities and prevent clogging of the engine's water supply line; or it can be a fine filter to filter tiny impurities such as silt and microorganisms. Through the connection between the filter 660 and the water tank 630, water in the water tank 630 passes through the filter 660 to remove impurities.

[0094] In an optional embodiment of the present invention, the first water supply component 610 includes:

[0095] The first water pump 611 is located between the water storage tank 630 and the first water sprayer 400, and is used to pressurize the water in the water storage tank 630 and deliver it to the first water sprayer 400.

[0096] In this embodiment of the invention, a first water pump 611 can be used as a pressurizing component for high-pressure water supply. The first water pump 611 is located between the water storage tank 630 and the first water sprayer 400; the input end of the first water pump 611 is connected to the water storage tank 630, and the output end is connected to the first water sprayer 400. It draws water from the water storage tank 630, pressurizes the water, and then delivers the pressurized water to the first water sprayer 400.

[0097] In an optional embodiment of the present invention, the second water supply component 620 includes:

[0098] The second water pump 621 is located between the water storage tank 630 and the second water sprayer 500, and is used to pressurize the water in the water storage tank 630 and deliver it to the second water sprayer 500.

[0099] Similarly, a second water pump 621 can be used as a pressurization component for low-pressure water supply. The second water pump 621 is located between the water storage tank 630 and the second sprayer 500; its input end is connected to the water storage tank 630, and its output end is connected to the second sprayer 500. It draws water from the water storage tank 630, pressurizes the water, and then delivers the pressurized water to the second sprayer 500. Its pressurization pressure is lower than that of the first water pump 611.

[0100] In this embodiment of the invention, by combining in-cylinder direct injection with the pre-combustion chamber 300 in the cylinder head 200, the lean combustion potential can be realized more significantly, the compression ratio can be increased, and the possibility of knocking and pre-ignition can be reduced. Water can be sprayed at any time needed to quickly and accurately adjust the engine operating conditions. The first water injector 400 sprays water onto the surface of the pre-combustion chamber 300 to prevent the surface temperature of the pre-combustion chamber 300 from becoming too high, reduce and remove carbon buildup on the surface of the pre-combustion chamber 300, and further reduce the possibility of knocking and pre-ignition. The second water injector 500 sprays water into the intake manifold 700 to remove carbon buildup on the intake valve surface in the cylinder head, reduce the intake air temperature, and increase the water content. Furthermore, the combination of water spraying in the intake manifold 700 and in-cylinder water spraying allows for greater adjustment of the water spray volume and spray strategy, achieving full-condition water spray control and significantly improving the engine's thermal efficiency potential.

[0101] In this embodiment of the invention, a vehicle is also disclosed, including the engine described above. The engine outputs power to the vehicle chassis, which, based on the power output, drives the wheels to rotate, thereby enabling the vehicle to move. Alternatively, the power output by the engine can be converted into electrical energy to provide power to the vehicle's onboard electronic systems or to charge the power battery, allowing the vehicle to obtain energy from the power battery for movement.

[0102] Reference Figure 2 The diagram illustrates a flowchart of an embodiment of an engine control method according to the present invention. The engine includes a body and a first water injector; the body contains a combustion chamber and a pre-combustion chamber, with the first water injector located outside the pre-combustion chamber and within the combustion chamber, the pre-combustion chamber being located in the water spray direction of the first water injector. The engine structure can be referenced to the above embodiment, and no specific limitations are imposed.

[0103] The control method for the water jet engine includes:

[0104] Step 201: Obtain vehicle operating condition data;

[0105] This invention can be applied to the electronic control unit of a vehicle engine. It can acquire current vehicle operating data, including but not limited to vehicle speed, load, crankshaft position, coolant temperature, air-fuel ratio, etc.

[0106] Step 202: Control the first water sprayer to spray water based on the vehicle operating data.

[0107] By acquiring vehicle operating data, the current operating status of the vehicle is analyzed, and the first water sprayer is controlled to spray water at the appropriate time. Furthermore, the spray volume and spraying time of the first water sprayer can be controlled during spraying.

[0108] In one example of the present invention, the vehicle operating data includes crankshaft position and engine load; the step of controlling the first water injector to spray water based on the vehicle operating data includes: controlling the first water injector to spray water according to the crankshaft position and the engine load.

[0109] In practical applications, vehicle operating data can include crankshaft position and engine load. The crankshaft position determines the piston's position within the cylinder, thus determining the cylinder's operating condition. For a four-stroke engine, the cylinder's operating condition includes the intake stroke, compression stroke, power stroke, and exhaust stroke.

[0110] When the engine condition corresponding to the crankshaft position and load condition requires water injection into the pre-combustion chamber, the first water injector can be controlled to spray water. This allows the first water injector to be controlled to spray water under specific engine operating conditions and engine loads, thereby reducing carbon deposit formation on the pre-combustion chamber.

[0111] Specifically, the step of controlling the water injection of the first water injector based on the crankshaft position and the engine load includes:

[0112] When the crankshaft is in the intake position region and the engine load is medium load, control the first water injector to spray water; or,

[0113] When the crankshaft is in the intake position region and the engine load is high, control the first water injector to spray water; or,

[0114] When the crankshaft is in the compression position region and the engine load is high, control the first water injector to spray water; or,

[0115] When the crankshaft is located in the exhaust position area and the engine load is high, the first water injector is controlled to spray water.

[0116] In this embodiment of the invention, when the engine load is medium, the first water injector only needs to be controlled to spray water during engine intake, thereby reducing the temperature of the combustible mixture during intake to improve engine performance and reduce carbon deposit formation. Therefore, when the crankshaft is located in the intake region and the engine load is medium, the first water injector is controlled to spray water; while at other crankshaft positions under medium load, water is not sprayed.

[0117] When the engine load is high, water can be sprayed during the intake, compression, and exhaust strokes. Therefore, when the engine load is high, and the crankshaft is positioned in one of the intake, compression, or exhaust regions, the first water injector is controlled to spray water. The engine load (medium, high, low) can be determined based on the specific engine design and characteristics; this embodiment of the invention does not specifically limit this. For example, the engine load (medium, high, low) can be determined based on the engine load rate. The engine load rate is the ratio of the engine's current operating load to its maximum power. The engine load rate reflects the engine's actual operating state and efficiency. Examples include low load (below a certain threshold, such as 20%), medium load (between low and high loads), and high load (above another threshold, such as 85%). The specific values ​​of these thresholds may vary depending on the engine type, application, and design.

[0118] The intake, compression, and exhaust positions correspond to the engine's strokes. When the crankshaft is in the intake position, the engine is in its intake stroke. When the crankshaft is in the compression position, the engine is in its compression stroke. When the crankshaft is in the exhaust position, the engine is in its exhaust stroke. Taking a four-stroke engine as an example, the engine completes the intake, compression, power, and exhaust strokes within 720 degrees of crankshaft rotation. The range of 0–180 degrees is the intake position, 180–360 degrees is the compression position, 360–450 degrees is the power position, and 450–720 degrees is the exhaust position.

[0119] In an optional embodiment of the present invention, the engine further includes: an intake manifold connected to the engine block; and a second water injector located in the intake manifold; the method further includes:

[0120] The second water sprayer is controlled to spray water based on the vehicle operating data.

[0121] When a water-injection engine has a second water injector installed in the intake manifold, water can also be sprayed by controlling the second water injector to improve engine performance. Accordingly, the second water injector can be controlled by acquiring vehicle operating data.

[0122] The first and second water sprayers can be controlled in a coordinated manner, meaning that the first and second water sprayers can be simultaneously controlled by the electronic control unit to spray water at corresponding times.

[0123] Furthermore, the vehicle operating data includes the crankshaft position; the step of controlling the second water injector to spray water based on the vehicle operating data includes: controlling the second water injector to spray water according to the crankshaft position.

[0124] Correspondingly, the second water injector is controlled by the crankshaft position to spray water, thereby improving the corresponding engine performance during the current stroke.

[0125] Specifically, the step of controlling the second water injector to spray water based on the crankshaft position includes: controlling the second water injector to spray water when the crankshaft position is in the intake position region, or the compression position region, or the exhaust position region.

[0126] Because the second water injector is located in the intake manifold, it can continuously humidify the combustible mixture. The second water injector can be controlled to spray water when the crankshaft is in the intake position region, the compression position region, or the exhaust position region.

[0127] To enable those skilled in the art to clearly understand the water spray control of the first and second water sprayers in the embodiments of the present invention, please refer to... Figure 3 Explanation:

[0128] During engine start-up, neither the first nor the second water injector operates, ensuring rapid engine warm-up. When the engine is detected to be operating under low load, the second water injector sprays water according to instructions from the electronic control unit to reduce the intake air temperature. When the engine is detected to be operating under medium load, both the first and second water injectors operate simultaneously during the intake stroke, and the second water injector operates during the compression and exhaust strokes; this reduces the surface temperature of the main combustion chamber and pre-combustion chamber, achieving a higher compression ratio potential. When the engine is detected to be operating under high load, both the first and second water injectors operate simultaneously during the intake, compression, and exhaust strokes, further adjusting the water injection volume to reduce the surface temperature of the pre-combustion chamber and prevent carbon buildup and high temperatures that could lead to pre-ignition and knocking.

[0129] When it is necessary to remove carbon deposits from the pre-combustion chamber, you can refer to... Figure 4 The first water sprayer is activated during the air intake phase to spray water, thereby removing carbon deposits in the pre-combustion chamber.

[0130] When it is necessary to remove carbon deposits from the valves, you can refer to... Figure 5 By activating the second water sprayer during the intake phase, water is sprayed to remove carbon deposits from the valves.

[0131] This invention, through determining the required engine operating period and the timing of water spraying based on engine operating data, sprays water onto the engine to reduce the surface temperature of the pre-combustion chamber and the temperature of the combustion chamber, preventing pre-ignition and knocking tendencies caused by high temperatures; and when carbon deposit removal is required, the corresponding water sprayer is activated to spray water, thereby achieving carbon deposit removal.

[0132] Furthermore, the specific structure of the water jet engine used in the embodiments of the present invention can be referred to the above embodiments, and will not be repeated here.

[0133] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0134] Reference Figure 6 The present invention also provides a computer-readable storage medium storing a computer program 601, which, when executed by a processor, performs the engine control method as described in any one of the embodiments of the present invention.

[0135] The engine includes: a body and a first water injector; the body is provided with: a combustion chamber and a pre-combustion chamber, the combustion chamber forming a combustion cavity, and the pre-combustion chamber located within the combustion cavity; the first water injector is located outside the pre-combustion chamber and within the combustion cavity, and the pre-combustion chamber is located in the spray direction of the first water injector; the method includes:

[0136] Obtain vehicle operating data;

[0137] The first water sprayer is controlled to spray water based on the vehicle operating data.

[0138] Optionally, the vehicle operating data includes crankshaft position and engine load; the step of controlling the first water injector to spray water based on the vehicle operating data includes:

[0139] The first water injector is controlled to spray water based on the crankshaft position and the engine load.

[0140] Optionally, the step of controlling the water injection of the first water injector based on the crankshaft position and the engine load includes:

[0141] When the crankshaft is in the intake position region and the engine load is medium load, control the first water injector to spray water; or,

[0142] When the crankshaft is in the intake position region and the engine load is high, control the first water injector to spray water; or,

[0143] When the crankshaft is in the compression position region and the engine load is high, control the first water injector to spray water; or,

[0144] When the crankshaft is located in the exhaust position area and the engine load is high, the first water injector is controlled to spray water.

[0145] Optionally, the engine further includes: an intake manifold connected to the engine block; and a second water injector located in the intake manifold; the method further includes:

[0146] The second water sprayer is controlled to spray water based on the vehicle operating data.

[0147] Optionally, the vehicle operating data includes the crankshaft position; the step of controlling the second water injector to spray water based on the vehicle operating data includes:

[0148] The second water sprayer is controlled to spray water based on the crankshaft position.

[0149] Optionally, the step of controlling the second water sprayer to spray water based on the crankshaft position includes:

[0150] When the crankshaft is in the intake position region, or the compression position region, or the exhaust position region, the second water injector is controlled to spray water.

[0151] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0152] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0153] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0154] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0155] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0156] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0157] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0158] The present invention has provided a detailed description of an engine, an engine control method, a vehicle, and a storage medium. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An engine characterized by, The engine comprises a machine body and a first water injector, and the machine body is provided with a combustion chamber and a pre-chamber, the combustion chamber surrounds a combustion cavity, and the pre-chamber is located in the combustion cavity. The pre-chamber comprises a spark plug and a pre-chamber shell which surrounds a pre-chamber cavity, the spark plug is arranged in the pre-chamber cavity, and a jet nozzle is arranged on the pre-chamber shell, the pre-chamber cavity is communicated with the combustion cavity through the jet nozzle. The jet nozzle is constricted along the jet direction. The engine further comprises an intake manifold connected with the machine body and communicated with the combustion cavity, and a second water injector arranged in the intake manifold and used for spraying water in the intake manifold. The engine further comprises a water supply assembly connected with the first water injector and the second water injector and used for supplying water to the first water injector and the second water injector.

2. The engine of claim 1, wherein The water supply assembly comprises a first water supply component connected with the first water injector and used for supplying water to the first water injector, a second water supply component connected with the second water injector and used for supplying water to the second water injector, wherein the pressure of the first water supply component is greater than the pressure of the second water supply component, and a water storage tank connected with the first water supply component and the second water supply component. The water supply assembly further comprises a water level gauge arranged in the water storage tank and used for detecting the liquid level of the water storage tank, and / or a water quality detector connected with the bottom of the water storage tank and used for detecting the water quality state of the water storage tank, and / or a filter connected with the water storage tank and used for filtering impurities in the water in the water storage tank. The first water supply component comprises a first water pump arranged between the water storage tank and the first water injector and used for pressurizing and conveying the water in the water storage tank to the first water injector, and / or the second water supply component comprises a second water pump arranged between the water storage tank and the second water injector and used for pressurizing and conveying the water in the water storage tank to the second water injector.

3. The engine of claim 2, wherein The angle between the water spraying direction of the first water injector and the axis of the pre-chamber is 50-130 degrees.

4. The engine of claim 1, wherein The first water injector and the pre-chamber are respectively located on two sides of the axis of the combustion cavity. The axis of the combustion cavity and the water spraying direction of the first water injector form a first angle, and / or the axis of the combustion cavity and the axis of the pre-chamber form a second angle. The engine comprises a machine body and a first water injector, and the machine body is provided with a combustion chamber and a pre-chamber, the combustion chamber surrounds a combustion cavity, and the pre-chamber is located in the combustion cavity; wherein the first water injector is located outside the pre-chamber and in the combustion cavity, and the pre-chamber is located in the water spraying direction of the first water injector; the method comprises:

5. The engine of claim 4, wherein Obtaining vehicle working condition data; Controlling the first water injector to spray water based on the vehicle working condition data.

6. The engine of claim 5, wherein ​ ​ ​ ​ 7. The engine of claim 6, wherein ​ ​ ​ ​ 8. The engine of claim 6, wherein, ​ ​ ​ ​ 9. The engine of any one of claims 1-8, wherein, ​ 10. The engine of claim 9, wherein, ​ 11. The engine of claim 9, wherein ​ 12. A control method of an engine characterized by comprising: ​ ​ ​ 13. The method of claim 12, wherein, The vehicle operating condition data includes crankshaft position and engine load; the step of controlling the first water injector based on the vehicle operating condition data includes: controlling the first water injector based on the crankshaft position and the engine load.

14. The method of claim 13, wherein, The step of controlling the first water injector based on the crankshaft position and the engine load includes: controlling the first water injector when the crankshaft position is in the intake position region and the engine load is medium load; or, controlling the first water injector when the crankshaft position is in the intake position region and the engine load is large load; or, controlling the first water injector when the crankshaft position is in the compression position region and the engine load is large load; or, controlling the first water injector when the crankshaft position is in the exhaust position region and the engine load is large load.

15. The method of claim 12, wherein, The engine further includes: an intake manifold connected to the engine block; a second water injector located in the intake manifold; the method further includes: controlling the second water injector based on the vehicle operating condition data.

16. The method of claim 15, wherein, The vehicle operating condition data includes crankshaft position; the step of controlling the second water injector based on the vehicle operating condition data includes: controlling the second water injector based on the crankshaft position.

17. The method of claim 16, wherein, The step of controlling the second water injector based on the crankshaft position includes: controlling the second water injector when the crankshaft position is in the intake position region, or the compression position region, or the exhaust position region.

18. A vehicle characterized by comprising: An engine as claimed in any one of claims 1 to 11.

19. A computer-readable storage medium, characterized in that, A computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the control method of the engine as claimed in any one of claims 12 to 17.

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