Water distribution device for gasoline engine cylinder body and control method of water distribution device

Abstract

The invention discloses a water distribution device for a gasoline engine cylinder body and a control method of the water distribution device, and relates to the technical field of engines. The cylinder body is provided with a layered water jacket; the turning plate is arranged at a water gap of the layered water jacket, and a worm gear is arranged at the bottom of the turning plate and used for being matched with the screw rod; and the screw rod is used for driving the turning plate to rotate through self rotation under the driving of the motor so as to control the opening and closing of the layered water jacket. According to the water distribution device for the gasoline engine cylinder and the control method of the water distribution device, the cooling water temperature of an engine can be controlled according to different working conditions, and the optimal heat efficiency is achieved.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to a water distribution device for a gasoline engine cylinder block and its control method. Background Technology

[0002] With increasingly stringent requirements for energy conservation and emission reduction, fuel consumption rates and pollutant emission standards for passenger vehicles are becoming more stringent. Manufacturers are striving to refine engine energy management and control to achieve higher thermal efficiency. However, exhaust pollutants often remain high during idling or cold starts, particularly the hydrocarbon content, which frequently exceeds the internal control limits set by various engine manufacturers. This is primarily due to the low engine temperature at these times, resulting in low conversion efficiency of the three-way catalytic converter in the exhaust (slow ignition). Conventional cylinder block water inlets and internal water chambers generally have the following problems:

[0003] a) When the engine is idling or cold-starting, the coolant in this type of cylinder block is still distributed according to this area, which makes the engine water temperature and oil temperature rise slowly, the oil viscosity is high, the friction work of the engine is large, and thus the fuel consumption of the engine increases.

[0004] b) Due to the slow heat generation of the engine, the three-way catalytic converter in the exhaust gas ignites slowly, resulting in high HC emissions;

[0005] c) This type of water distribution meets the cooling requirements of the whole machine at full speed and full load. However, users do not need a large amount of cooling water to cool the cylinder under common operating conditions or in the high thermal efficiency zone of partial load, which will result in a large amount of energy loss.

[0006] d) In winter or low-temperature environments, the machine cannot warm up quickly enough and therefore cannot provide warm air, causing customer complaints. Summary of the Invention

[0007] The purpose of this invention is to provide a water distribution device for a gasoline engine cylinder block and its control method, which can control the engine's cooling water temperature according to different operating conditions to achieve optimal thermal efficiency.

[0008] This invention provides the following solution:

[0009] According to one aspect of the present invention, a water distribution device for a gasoline engine cylinder block is provided, the gasoline engine cylinder block water distribution device comprising:

[0010] Cylinder block, flap plate, screw and motor;

[0011] The cylinder body is a cylinder body with a layered water jacket;

[0012] The flap is installed at the water inlet of the layered water jacket, and its bottom is provided as a worm gear, which is used to cooperate with the screw.

[0013] The screw, driven by the motor, rotates to rotate the flap, thereby controlling the opening and closing of the stratified water jacket.

[0014] Optionally, the cylinder block can be divided into upper and lower layers, and the flap includes an upper structure and a lower structure.

[0015] Optionally, the flap is positioned at the water inlet of the cylinder and in the middle of the water jacket.

[0016] Optionally, the rotation of the screw is controlled by an ECU.

[0017] Optional features also include: water temperature sensor and speed sensor.

[0018] According to a second aspect of the present invention, a control method for a water separator for a gasoline engine cylinder block is provided, applied to the water separator for a gasoline engine cylinder block provided in the foregoing embodiments of the present invention, the control method for the water separator for a gasoline engine cylinder block comprising:

[0019] In the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side.

[0020] During cold start or idling, the screw rotates 90°, and the upper middle part of the flap will block one side of the flap, while the lower part will be completely blocked.

[0021] Under normal operating conditions or partial load, adjust the screw rotation angle appropriately to control the flap at a suitable angle.

[0022] Optionally, in the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side, including:

[0023] When the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state.

[0024] When the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state.

[0025] When the engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, and the water temperature is greater than 100 degrees Celsius, the flap maintains its initial state.

[0026] When the engine speed is less than 4500 rpm, the engine load is between 50% and 70%, and the water temperature is greater than 90 degrees Celsius, the flap maintains its initial state.

[0027] When the engine speed is greater than or equal to 4500 rpm, or the engine load is greater than or equal to 70%, the flap maintains its initial state.

[0028] Optionally, during cold start or idling, the screw rotates 90°, blocking one side of the flap at the upper middle part and completely blocking the lower part, including:

[0029] When the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is less than or equal to 105 degrees Celsius, the flap rotates 90 degrees.

[0030] When the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is less than or equal to 85 degrees Celsius, the flap rotates 90 degrees.

[0031] Optionally, under normal operating conditions or partial load, the screw rotation angle can be adjusted appropriately to control the flap at a suitable angle, including:

[0032] The engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is between 85 and 105 degrees Celsius, with the flap maintained at 60 degrees.

[0033] The engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, the water temperature is less than 100 degrees Celsius, and the flap is maintained at 45 degrees.

[0034] The engine speed is less than 4500 rpm, the engine load is between 50% and 70%, the water temperature is less than 90 degrees Celsius, and the flap is maintained at 30 degrees Celsius.

[0035] Optional, also includes:

[0036] Based on the calibration results, the control angle of the flap is adjusted.

[0037] The above solution achieves the following beneficial technical effects:

[0038] The device is installed at the water inlet or inside the water jacket of the layered water jacket cylinder. It controls the water flow of the upper and lower water jackets of the cylinder based on the rotation of the flap structure and the worm gear mechanism (motor controlled) (based on the change of the flow channel area), and finally realizes the control of the engine cooling water temperature according to different operating conditions to achieve the best thermal efficiency. Attached Figure Description

[0039] Figure 1 This is a structural diagram of a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention;

[0040] Figure 2 This is a BB cross-sectional view of a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention;

[0041] Figure 3 This is a CC cross-sectional view of a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention;

[0042] Figure 4 This is a flowchart of a control method for a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention;

[0043] Figure 5 This is a flowchart of a control method for a split device for a gasoline engine cylinder block provided in one or more embodiments of the present invention;

[0044] Figure 6 This is a flowchart of the initial position control operation in the control method provided by one or more embodiments of the present invention;

[0045] Figure 7 This is a flowchart of the cold start control operation in the control method provided by one or more embodiments of the present invention;

[0046] Figure 8 This is a flowchart of the routine operating condition control operation in the control method provided by one or more embodiments of the present invention. Detailed Implementation

[0047] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Figure 1 This is a structural diagram of a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention. See also... Figure 1 The water distribution device for a gasoline engine includes: cylinder block 1, flap 2, screw 4 and motor 3.

[0049] In this embodiment, cylinder 1 is a cylinder with a layered water jacket. The layered water jacket is the channel through which cooling water flows when cooling cylinder 1. The layered design is used to achieve better control.

[0050] In a typical embodiment of this example, the layered water jacket takes the form of an upper, undivided layer and a lower layer. That is, in this typical embodiment, the layered water jacket is a two-layer structure.

[0051] On one side of the cylinder body 1, a flap 2 is also provided. The flap 2 is located on the side of the water inlet of the cylinder body 1. The function of the flap 2 is to control the cross-sectional area of ​​the water inlet by its own rotation, thereby controlling the liquid flow rate in the stratified water jacket.

[0052] In the initial position, the upper part of the water jacket, also known as the upper water jacket, is fully open. Similarly, in the initial position, the lower part of the water jacket, also known as the lower water jacket, is also fully open.

[0053] When rotated 90 degrees, one of the channels on either side of the upper water jacket is completely closed. The lower water jacket, on the other hand, is completely closed.

[0054] The maximum flip position of flap 2 is 90 degrees. This means that the flip angle of flap 2 is between 0 degrees and 90 degrees.

[0055] It should be noted that in various embodiments of this example, the flip angle of the flap 2 can be any value between 0 degrees and 90 degrees. When the flip angle of the flap 2 is between 0 degrees and 90 degrees, the water inlet of the layered water jacket is neither completely closed nor completely open, but is in a state between open and closed.

[0056] For example, if the flip angle of flap 2 is 45 degrees, the water flow in the upper and lower water jackets is each restricted by 25%.

[0057] In terms of overall shape, the flap 2 is cylindrical. The bottom of this cylinder is designed as a worm gear. This worm gear can be linked with the screw 4. That is, as the screw 4 rotates, the worm gear at the bottom also rotates, thus causing the flap 2 to flip.

[0058] The cylindrical flap 2 can be divided into an upper part and a lower part. The upper part of the flap 2 corresponds to the upper water jacket. The lower part of the flap 2 corresponds to the lower water jacket. That is, the upper part of the flap 2 is used to control the opening and closing of the water inlet of the upper water jacket, while the lower part of the flap 2 is used to control the opening and closing of the water inlet of the lower water jacket.

[0059] The flip angle of flap 2 ranges from 0 degrees to 90 degrees. A 0-degree flip angle corresponds to the initial position of the flipping action, meaning that flap 2 has not performed a flipping operation when it is at the 0-degree position.

[0060] 90 degrees corresponds to the maximum flipping position of the flipping action. In other words, at the 90-degree position, the flip plate 2 performs the maximum range of motion for the flipping action.

[0061] At the 0-degree position, the inlet of the upper water jacket is fully open. The inlet of the lower water jacket is also fully open.

[0062] At a 90-degree angle, the water inlet of the upper water jacket has one side completely closed and the other side completely open.

[0063] The water inlets of the lower water jacket are completely closed.

[0064] Since the bottom end of the flap 2 is machined into a worm gear shape, it can be linked with the screw 4 through the worm gear structure at the bottom end.

[0065] In this embodiment, the shaft of the cylindrical flap 2 and the shaft of the screw 4 are intersected at a 90-degree angle. Through this 90-degree intersecting motion, the two mesh with each other.

[0066] In this embodiment, the screw 4 is used to drive the flap 2 to rotate through its own rotation.

[0067] It should be noted that in this embodiment, the flap 2 only rotates between 0 degrees and 90 degrees. That is, the maximum flipping angle of the flap 2 will not exceed 90 degrees. Therefore, the screw 4 used to drive this rotation of the flap 2 does not need to rotate too many times in each operation. Of course, the number of rotations of the screw 4 in each operation is also affected by the transmission ratio of the worm gear structure.

[0068] One end of the screw 4 is connected to the bottom end of the flap 2 via a thread, while the other end of the screw 4 is fixed to the rotor of the motor 3. In this way, the rotation of the rotor of the motor 3 can be directly transmitted to the screw 4. Driven by the rotor of the motor 3, the screw 4 uses its own rotation to push the flap 2 to flip, thereby controlling the size of the water flow in the cylinder 1.

[0069] By linking the various components in the water distribution device, the shortcomings of conventional fixed-area water inlets can be avoided, and precise control of the coolant inside the cylinder block water jacket can be achieved on demand. This enables rapid warm-up, reduced friction work and emissions, and improved engine thermal efficiency and customer experience.

[0070] This device is highly integrated and can be installed at the cylinder inlet or inside the cylinder water jacket, depending on the actual application.

[0071] Figure 2 This is a cross-sectional view (BB) of the view provided in the foregoing embodiments of the present invention. See also... Figure 2 In the cross-sectional view, the cylindrical cylinder block at the top is the engine block, which is the actual location where combustion occurs in the engine.

[0072] Looking further down, below the cylinder body 1, the rod arranged perpendicularly to the cylinder wall of the cylinder body 1 is the screw 4 provided in various embodiments of the present invention. The screw 4, through its own rotation, drives the flap 3 to rotate, thereby controlling the water flow rate inside the cylinder body 4.

[0073] See Figure 2 One end of the screw 4 extends into the interior of the motor 3. Therefore, the rotation of the rotor of the motor 3 can drive the screw 4 to rotate along with it.

[0074] The other end of the screw 4, which is not fixed to the motor, should be threaded. It is through the thread formed on this end that the screw 4, through its own rotation, drives the worm gear located at the bottom of the flap 2 to rotate, thereby pushing the flap 2 to flip.

[0075] Figure 3 This is a CC cross-sectional view of the view provided in the foregoing embodiments of the present invention. See also Figure 3 This more clearly shows the positional relationship between the flap 2 and the screw 4.

[0076] At the bottom of the flap 2, the screw 4 and the flap 2 form a mating relationship. Furthermore, this mating relationship is a worm gear mechanism mating relationship.

[0077] Specifically, the bottom end of the flap 2 is designed in the shape of a worm gear. At the end of the screw 4 that contacts the worm gear, a uniform thread is formed on the surface of the screw 4. Relying on the cooperation between the thread on the screw and the worm gear at the bottom end of the flap, the screw 4 can rotate on its own to push the flap 2 to flip, thereby controlling the size of the water inlet opening and thus controlling the flow rate of the cooling water.

[0078] Figure 4 This is a control method for a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention. See also Figure 4 The control method for the water distribution device in the cylinder block of a gasoline engine includes the following operating steps:

[0079] S41, in the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side.

[0080] S42, during cold start or idling, the screw rotates 90°, the upper middle part of the flap will block one side of the flap, and the lower part will be completely blocked.

[0081] S43 allows for appropriate adjustment of the screw rotation angle under normal operating conditions or partial load, controlling the flap at a suitable angle.

[0082] In the control method provided in this embodiment, the ECU controls the rotation of the motor, which in turn drives the flap 2 to flip, thereby changing the fixed cross-sectional area of ​​the water inlet in the prior art and making the cross-sectional area of ​​the water inlet of the water jacket an adjustable variable. Furthermore, by controlling this variable, water inlets with different cross-sectional areas can be formed, thereby achieving the purpose of controlling the water flow velocity in the water jacket.

[0083] It should be emphasized that the technical solution provided in this embodiment is a spatially layered technical solution.

[0084] Specifically, the water inlet settings of the water jacket are designed to distinguish between upper and lower inlets. Correspondingly, the entire flap 2 is also divided into an upper part and a lower part.

[0085] As mentioned in the foregoing embodiments of the present invention, the flip angle of the flap 2 has two extreme values. One extreme value is 90 degrees, and the other extreme value is 0 degrees.

[0086] The aforementioned maximum and minimum values ​​correspond to two operating conditions. The first operating condition is the initial position condition. Under this condition, the flap 2 stops at the initial position without any flipping.

[0087] In its initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side.

[0088] It should be noted that although the flap 2 is stationary in the initial position under the current operating condition, this does not mean that the flap has never been flipped.

[0089] For example, during the operation of a gasoline engine, the flap has been flipped to the 90-degree control position. However, during subsequent operation, due to further changes in operating conditions, the flap needs to return to its original initial position. In this scenario, the flap will return to its original position.

[0090] Regardless of how the actual scenario changes, as long as the flap stops in the initial position, the opening parameters of the upper and lower water inlets will not change.

[0091] The initial position of the flap corresponds to a 0-degree flip angle. A 90-degree flip angle corresponds to a cold start or idling condition.

[0092] During cold start or idling, the screw drives the flap to rotate 90 degrees, which blocks one side of the flap from the upper middle part and completely blocks the lower part.

[0093] Apart from the two extreme operating conditions mentioned above, in most cases, the mechanism is in an intermediate state. That is, it is neither in the initial position nor in a cold start or idling condition.

[0094] In these operating conditions, the flip angle of the flap is neither 0 degrees nor 90 degrees, but an angle value between 0 degrees and 90 degrees.

[0095] The table below shows the various operating conditions of a gasoline engine during actual operation and the corresponding control strategies.

[0096]

[0097]

[0098]

[0099] Figure 5 This is a control method for a water distribution device for a gasoline engine cylinder block provided in one or more embodiments of the present invention. See also Figure 5 The control method for the water distribution device in the cylinder block of a gasoline engine includes the following operating steps:

[0100] S51, in the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side.

[0101] S52, when cold start or idling, the screw rotates 90°, the upper middle part of the flap will block one side of the flap, and the lower part will be completely blocked.

[0102] S53 allows users to adjust the screw rotation angle appropriately under normal operating conditions or partial load to control the flap at a suitable angle.

[0103] S54, based on the calibration results, adjust the control angle of the flap.

[0104] The difference between this embodiment and the previous embodiments of the present invention is that the control process provided in this embodiment not only includes a one-time control action of the rotation angle, but also includes a control action to further adjust the rotation angle based on the scene changes after the one-time control action.

[0105] It should be understood that in actual control scenarios, the rotation angle of the flap is usually a real-time changing control variable. It's difficult to find a single rotation angle that is suitable for all operating conditions. Therefore, readjusting the rotation angle based on the current actual operating conditions is a common operation in actual control processes.

[0106] It should be emphasized that, in this embodiment, the operating conditions are determined based on the following conditions: first, engine speed; second, engine load; and third, water temperature.

[0107] This embodiment achieves further adjustment of the flip-plate's rotation angle according to changes in working conditions through the control action of further adjustment of the flip-plate, enabling the mechanism to adapt to changes in working conditions in real time.

[0108] Figure 6 This is a flowchart of the initial position control operation in the control method provided by one or more embodiments of the present invention. See also Figure 6 In the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower side, including:

[0109] S61, when the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state.

[0110] S62, when the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state.

[0111] When the engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, and the water temperature is greater than 100 degrees Celsius, the flap maintains its initial state.

[0112] S64, when the engine speed is less than 4500 rpm, the engine load is between 50% and 70%, and the water temperature is greater than 90 degrees Celsius, the flap maintains its initial state.

[0113] S65, when the engine speed is greater than or equal to 4500 rpm, or the engine load is greater than or equal to 70%, the flap maintains its initial state.

[0114] This embodiment illustrates several typical situations where the flap needs to be maintained in its initial state.

[0115] The first typical scenario is that the engine's current speed is no more than 2500 rpm, and the current engine load is less than 10%. The engine coolant temperature is above 105 degrees Celsius. In this typical scenario, the flaps in the mechanism need to be maintained in their initial state without any tilting adjustments.

[0116] The second typical scenario is that the engine's current speed is no higher than 2500 rpm, and the current engine load is less than 50%. Furthermore, the engine coolant temperature is above 105 degrees Celsius. In this typical scenario, the flaps in the water separator also do not require any adjustment.

[0117] The third typical scenario is that the engine speed is currently maintained between 2500 and 4500 rpm. The current engine load is less than 50%. The engine coolant temperature is above 100 degrees Celsius. In this typical scenario, the flap in the water separator does not need to be flipped or adjusted; it only needs to remain in its initial position.

[0118] The fourth typical scenario is when the engine's current speed is less than 4500 rpm, the current engine load is between 50% and 70%, and the engine coolant temperature is above 90 degrees Celsius. In this case, the flapper truck does not need to be flipped; it only needs to remain in its initial position.

[0119] The fifth typical scenario is when the engine's current speed is not less than 4500 rpm, or when the engine's load is already greater than 70%. In either of these two situations, the flap does not need to be flipped; it can simply remain in its initial position.

[0120] Through the specific control methods described above, sufficient water flow can be ensured for cooling in the upper part of the cylinder block under full speed and full load conditions, while the semi-open lower part also meets the requirement that not much cooling is needed here.

[0121] Figure 7 This is a flowchart of the cold start control operation in the control method provided by one or more embodiments of the present invention. See also Figure 7 During cold starts or idling, the screw rotates 90°, blocking one side of the flap at the upper middle and completely blocking the lower part, including:

[0122] S71, when the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is less than or equal to 105 degrees Celsius, the flap rotates 90 degrees.

[0123] When the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is less than or equal to 85 degrees Celsius, the flap rotates 90 degrees.

[0124] This embodiment lists all scenarios for cold start and idling conditions.

[0125] During cold start and idling, the flap needs to be rotated to its maximum angle so that the opening of the sprue can adapt to the actual needs of both conditions.

[0126] The first scenario is where the engine's actual speed does not exceed 2500 rpm, the engine load is less than 10%, and the engine coolant temperature does not exceed 105 degrees Celsius. In this scenario, the flap needs to be rotated 90 degrees.

[0127] The second scenario is where the engine's actual speed is no more than 2500 rpm, the engine load is less than 50%, and the engine coolant temperature is no more than 85 degrees Celsius. In this scenario, the raft needs to be rotated 90 degrees.

[0128] In this scenario, through the control methods described above, the total water flow rate will be reduced to about 20% to 30% of the original, significantly reducing heat dissipation from the coolant and preventing the cylinder from overheating after the coolant boils, thus achieving rapid warm-up.

[0129] Figure 8 This is a flowchart of the routine operating condition control operation in the control method provided by one or more embodiments of the present invention. See also... Figure 8 Under normal operating conditions or partial load, adjust the screw rotation angle appropriately to control the flap at a suitable angle, including:

[0130] S81, engine speed less than or equal to 2500 rpm, engine load less than 50%, water temperature between 85 and 105 degrees Celsius, flap maintained at 60 degrees.

[0131] S82, engine speed between 2500 and 4500 rpm, engine load less than 50%, water temperature less than 100 degrees Celsius, flap maintained at 45 degrees.

[0132] S83, engine speed less than 4500 rpm, engine load between 50% and 70%, water temperature less than 90 degrees Celsius, flap maintained at 30 degrees.

[0133] This embodiment provides several typical scenarios for common operating conditions and partial load.

[0134] The first scenario is when the engine speed is no more than 2500 rpm, the engine load is less than 50%, and the engine coolant temperature is maintained between 85 and 105 degrees Celsius. In this scenario, the flap's tilting angle is 60 degrees.

[0135] The second scenario is when the engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, and the engine coolant temperature is less than 100 degrees Celsius. In this scenario, the tilting angle of the flap is maintained at 45 degrees.

[0136] The third scenario is when the engine speed is less than 4500 rpm, the engine load is between 50% and 70%, and the engine coolant temperature is below 90 degrees Celsius. In this scenario, the flap tilts at a 30-degree angle.

[0137] By implementing corresponding control methods in different scenarios, the flap can be controlled at a suitable angle (around 30° to 70°), thereby avoiding a large amount of energy loss, reducing fuel consumption, and improving the overall thermal efficiency of the machine.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions 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

1. A water distribution device for a gasoline engine cylinder block, characterized in that, The water distribution device for the gasoline engine cylinder block includes: Cylinder block, flap plate, screw and motor; The cylinder body is a cylinder body with a layered water jacket; The flap is installed at the water inlet of the layered water jacket, and its bottom is provided as a worm gear, which is used to cooperate with the screw. The screw, driven by the motor, rotates to rotate the flap, thereby controlling the opening and closing of the stratified water jacket.

2. The apparatus according to claim 1, characterized in that, The cylinder block is divided into upper and lower layers, and the flap includes an upper structure and a lower structure.

3. The apparatus according to claim 2, characterized in that, The flap is positioned at the water inlet of the cylinder and in the middle of the water jacket.

4. The apparatus according to claim 3, characterized in that, The rotation of the screw is controlled by the ECU.

5. The apparatus according to claim 4, characterized in that, Also includes: Water temperature sensor, speed sensor.

6. A control method for a water separator for a gasoline engine cylinder block, applied in the water separator for a gasoline engine cylinder block according to any one of claims 1 to 5, characterized in that, The control method for the water separator in the gasoline engine cylinder block includes: In the initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side. During cold start or idling, the screw rotates 90°, and the upper middle part of the flap will block one side of the flap, while the lower part will be completely blocked. Under normal operating conditions or partial load, adjust the screw rotation angle appropriately to control the flap at a suitable angle.

7. The control method according to claim 6, characterized in that, In its initial position, water can flow through the upper left and right sides of the flap, while water can only flow through the lower part of the flap on one side, including: When the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state. When the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is greater than 105 degrees Celsius, the flap maintains its initial state. When the engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, and the water temperature is greater than 100 degrees Celsius, the flap maintains its initial state. When the engine speed is less than 4500 rpm, the engine load is between 50% and 70%, and the water temperature is greater than 90 degrees Celsius, the flap maintains its initial state. When the engine speed is greater than or equal to 4500 rpm, or the engine load is greater than or equal to 70%, the flap maintains its initial state.

8. The control method according to claim 6, characterized in that, During cold starts or idling, the screw rotates 90°, blocking one side of the flap at the upper middle part and completely blocking the lower part, including: When the engine speed is less than or equal to 2500 rpm, the engine load is less than 10%, and the water temperature is less than or equal to 105 degrees Celsius, the flap rotates 90 degrees. When the engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is less than or equal to 85 degrees Celsius, the flap rotates 90 degrees.

9. The control method according to claim 6, characterized in that, Under normal operating conditions or partial load, adjust the screw rotation angle appropriately to control the flap at a suitable angle, including: The engine speed is less than or equal to 2500 rpm, the engine load is less than 50%, and the water temperature is between 85 and 105 degrees Celsius, with the flap maintained at 60 degrees. The engine speed is between 2500 and 4500 rpm, the engine load is less than 50%, the water temperature is less than 100 degrees Celsius, and the flap is maintained at 45 degrees. The engine speed is less than 4500 rpm, the engine load is between 50% and 70%, the water temperature is less than 90 degrees Celsius, and the flap is maintained at 30 degrees Celsius.

10. The control method according to claim 6, characterized in that, Also includes: Based on the calibration results, the control angle of the flap is adjusted.

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