CN113250802B - Flow control heat dissipation assembly, intelligent temperature management system, heat dissipation method of intelligent temperature management system and engine - Google Patents
Flow control heat dissipation assembly, intelligent temperature management system, heat dissipation method of intelligent temperature management system and engine Download PDFInfo
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- CN113250802B CN113250802B CN202110799786.8A CN202110799786A CN113250802B CN 113250802 B CN113250802 B CN 113250802B CN 202110799786 A CN202110799786 A CN 202110799786A CN 113250802 B CN113250802 B CN 113250802B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/28—Cylinder heads having cooling means for air cooling
Abstract
The invention provides a flow control heat dissipation assembly, an intelligent temperature management system, a heat dissipation method thereof and an engine, wherein the flow control heat dissipation assembly comprises a shell, and an expansion control section and a flow guide cooling section are sequentially arranged in the shell; the opening end of the expansion control section is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section, the opening end faces the direction of the flow guide cooling section, the caliber of the expansion control section gradually converges, and the flow guide cooling section is used for dissipating heat; the shell is internally provided with a partition plate, the partition plate sequentially penetrates through the expansion control section and the flow guide cooling section and divides the interior of the shell into a cylinder head cooling cavity and a cylinder body cooling cavity; and valve assemblies are arranged in the cylinder head cooling cavity and the cylinder body cooling cavity and are used for controlling the entering amount of cooling air. By adopting the scheme, the requirement of different areas on temperature control is met by the engine heat dissipation zone control, emission can be reduced, oil consumption is reduced, abrasion is reduced, and adaptability, reliability and safety can be improved.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a flow control heat dissipation assembly, an intelligent temperature management system, a heat dissipation method of the intelligent temperature management system and an engine.
Background
The air-cooled piston engine has the advantages of simple structure, light weight, convenient maintenance, low manufacturing cost and the like, and is widely applied to industries such as aviation, navigation, vehicles, general machinery and the like, but because the cooling efficiency is low, the temperature is not easy to control, the output of the power torque of the engine is seriously influenced, the unstable working temperature also increases the fuel consumption, the emission pollution is serious, the temperature change causes the aggravation of abrasion and the shortening of the service life, and the application of the engine is seriously restricted, the air-cooled piston engine is mainly used in places with low power and low price, and the advantages are buried while not being applied in large quantity.
With regard to oil consumption and emission under the same power, a large part of the self loss of the piston engine comes from friction between the cylinder and the piston ring, when the temperature is too low, the friction is increased due to metal cold shrinkage, when the temperature is too high, lubricating oil is denatured to generate insufficient lubrication to increase the friction and the abrasion, namely, when the temperature is too high, the oil consumption is increased; the high temperature can cause the combustion speed of the mixed gas to be too high to generate detonation, and the detonation can not only damage the engine, but also cause the combustion of the engine to generate abnormal toxic substances; the temperature of the engine is too low, the combustion speed of the mixed gas is slowed, and incomplete combustion and pollutant emission are increased. Therefore, the control of the working temperature of the engine is an important part for reducing emission and improving fuel economy.
Disclosure of Invention
The invention aims to solve the problems and provides a flow-control heat dissipation assembly, an intelligent temperature management system, a heat dissipation method thereof and an engine, by adopting the scheme, the heat dissipation zone control of the engine respectively meets the requirements of different areas on temperature control, can reduce emission, reduce oil consumption and abrasion, and can also improve adaptability, reliability and safety; and the expansion control section can improve the air flow rate of the flow guide cooling section, so that the engine can be cooled more fully when the engine runs at a low speed and high torque.
The technical scheme adopted by the invention is as follows: the flow control heat dissipation assembly comprises a shell, wherein an expansion control section and a flow guide cooling section are sequentially arranged in the shell;
the opening end of the expansion control section is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section, the opening end faces the direction of the flow guide cooling section, the caliber of the expansion control section gradually converges, and the flow guide cooling section is used for dissipating heat;
the shell is internally provided with a partition plate, the partition plate sequentially penetrates through the expansion control section and the flow guide cooling section and divides the interior of the shell into a cylinder head cooling cavity and a cylinder body cooling cavity;
the cylinder head cooling cavity is internally provided with a first valve assembly, the first valve assembly is used for controlling the cooling air inlet amount in the cylinder head cooling cavity, the cylinder body cooling cavity is internally provided with a second valve assembly, and the second valve assembly is used for controlling the cooling air inlet amount in the cylinder body cooling cavity.
In the prior art, the air-cooled piston engine cannot be applied in a large quantity due to low cooling efficiency and difficult temperature control, which seriously affects the output of the power torque of the engine, and the heat dissipation of the cylinder head part of the piston engine and the heat dissipation of the cylinder body casing part of the piston engine have different requirements, wherein the cylinder head part needs to dissipate heat quickly because of more concentrated heat, and the cylinder body part needs to reach a constant temperature, so the cylinder body part needs to control the temperature; in order to solve the problems, the scheme provides a flow control heat dissipation assembly which comprises a shell, wherein the shell is a tubular body which is made of light metal, composite material or other high-temperature resistant materials and is provided with a hollow cavity, and cooling air can pass through the tubular body; the cross section of the tubular body is changed in multiple sections, so that cooling air flows according to a designed route and a designed flow speed, and the designed section is rectangular; the shell is divided into an expansion control section and a flow guide cooling section from the front end to the rear end in sequence; the opening end of the expansion control section is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section, the section area of the expansion control section is larger than that of the flow guide cooling section, the caliber of the expansion control section is gradually reduced from the opening end to the flow guide cooling section, the expansion control section is horn-shaped, the caliber of the opening end of the expansion control section is largest, more cooling air can be received, the caliber of the expansion control section is gradually converged, the air pressure transmitted to the flow guide cooling section is increased, the air flow rate is further improved, and the engine can be cooled more fully when the engine runs at low speed (the cooling air flow generated by a fan and a propeller is weaker) and high torque; the diversion cooling section is located at the rear end of the expansion control section and is matched with cooling air to dissipate heat of the cylinder body and the cylinder head.
The scheme is that a partition plate is further arranged in the shell, the partition plate is arranged along the length direction of the shell and extends from the expansion control section to the flow guide cooling section, the interior of the shell is divided into a cylinder head cooling cavity and a cylinder body cooling cavity from the central axis direction of the shell, the cylinder head cooling cavity and the cylinder body cooling cavity both contain the expansion control section and the flow guide cooling section, the cylinder head cooling cavity is arranged at a position corresponding to the cylinder head of an engine, cooling air flowing through the section takes away part of heat through the cylinder head of the engine (the position of the top of a piston at a bottom dead center to the top of a cooling fin at the top of the cylinder head is called the cylinder head) to dissipate the heat of the cylinder head, the cylinder body cooling cavity is arranged at a position corresponding to the cylinder body of the engine, and the cooling air flowing through the section takes away the part of heat through the cylinder body of the engine (the position of the top of the piston at the bottom dead center to the connecting part of the cylinder body and a crankcase is called the cylinder body), dissipating heat for the cylinder body; the cylinder head cooling cavity and the cylinder body cooling cavity are respectively provided with a first valve component and a second valve component, the control end can respectively control the two valve components at the moment, the entering amount of cooling air in the cylinder head cooling cavity and the cylinder body cooling cavity is respectively controlled, and different requirements of partial heat dissipation of the cylinder head and partial heat dissipation of the cylinder body casing of the piston engine can be met at the moment.
Further optimizing, radiating fins are arranged in the diversion cooling section, and the circumferential outer ends of the radiating fins are tightly attached to the side wall of the diversion cooling section; in the scheme, in order to further improve the heat dissipation efficiency, the heat dissipation fins are arranged in the flow guide cooling section, the circumferential end parts of the heat dissipation fins are tightly attached to the inner side of the flow guide cooling section, so that the cooling air conveyed from the expansion control section completely flows into the space of the heat dissipation fins and is fully contacted with the heat dissipation fins and the air cylinder body, and the heat dissipation efficiency is improved, wherein the flow guide cooling section is of an equal diameter, and the cross section of the flow guide cooling section is tubular (or tubular according to the shapes of the air cylinder and the heat dissipation fins), so that the cooling air can be fully guided; furthermore, a spark plug mounting hole and a cylinder body through hole are formed in the flow guide cooling section; in the scheme, in order to facilitate the disassembly and assembly of the spark plug, a spark plug mounting hole is formed in the upper part of the flow guide cooling section, namely the position close to the top of the cylinder head, and in order to facilitate the disassembly and assembly of the engine shell, a cylinder body through hole or a cylinder body through groove is formed in the lower part of the flow guide cooling section, namely the position close to the cylinder body brake.
The first valve assembly and the second valve assembly respectively comprise two oppositely arranged valves, the two valves are mutually matched to realize air circulation or blocking, the two opposite ends of the connecting position of the expansion control section and the flow guide cooling section are respectively provided with a driving shaft through hole, a driving shaft is inserted into the driving shaft through holes, and the side wall of the driving shaft is connected with one end of the valve and used for driving the other end of the valve to rotate around the axis of the driving shaft; this scheme is the entering volume of accurate control cooling air, further optimize the valve subassembly, wherein first valve subassembly and second valve subassembly all include two relative valves that set up, the valve subassembly comprises valve and drive shaft, the valve is light metal, combined material or other high temperature resistant materials and makes, the valve is platelike, and have two relative valves that set up, be similar to the vertical hinged door, its plane shape is the polygon, the section can be the polygon or be favorable to reducing other shapes of air resistance, two valve front ends (the position that is located expansion control section front end when standard condition) can contact under the complete close state, be used for blocking cooling air and flow into water conservancy diversion cooling segment from expansion control end, its rear end transversely opens has the drive shaft via hole, this hole of drive shaft accessible, and can rotate with the drive shaft rigid coupling through fastening screw and drive shaft synchronous.
In the scheme, the driving shaft is arranged at the connecting position of the expansion control section and the flow guide cooling section, the valves can rotate around the axis of the driving shaft, the front ends of the valves are always positioned at the junction of the expansion control section or the expansion control section and the flow guide cooling section in the rotating process of the valves, when the valves are in a fully closed state, the two valves are parallel to the boundary line of the expansion control section and the flow guide cooling section, and when the valves are in a fully opened state, the two valves are opened and are respectively parallel to the side wall of the expansion control section; two side surfaces of the valve are matched with the side plates of the expansion section of the shell by a small gap, can freely slide and can not allow cooling air to pass through; the section of the expansion control section, which is larger than that of the flow guide cooling section, is designed to be hollow, so that the parts of the valve, except the parts at the front end, are in an air passage state, and the valve only contains cooling air for heat dissipation and smoothly passes through the cooling air, so that the air resistance is reduced; further, explanation of the valve fully closed to fully open: when the engine is in the fully closed state, the engine is in a state set for rapid warm-up operation under a cold condition, and no valve is in the fully closed state after the engine enters the working state. The valve is fully opened in a high-temperature environment or a low-speed heavy load state, and the heat dissipation capacity of the valve in a standard state is doubled (in the scheme) after the valve is fully opened, so that the limit state of the engine can be guaranteed, and the heat dissipation can be guaranteed. The standard state is the valve position state under the engine use environment and the design working condition.
Further optimize, still including locating the server in the casing outside, the output of server passes through the drive shaft control valve rotation, every the valve department all is equipped with a server alone. In this scheme, for the rotation of control valve, still be equipped with the server in the casing outside, wherein all be equipped with a server alone in every valve department, make every valve by independent control, make not only can be synchronous state between the valve, also can be asynchronous state, can further accurate control cooling air's the entering volume and the heat dissipation position, if the exhaust port end of side exhaust engine is higher than the heat of air inlet end, can be with the aperture increase of exhaust port one side valve setting, reach the balanced purpose of temperature.
The servo comprises a shell arranged on the outer side of the shell, a servo motor, a speed reducer and a worm gear are arranged in the shell, a motor gear of the servo motor is meshed with a speed reduction gear wheel of the speed reducer, the speed reduction gear wheel sleeves one end of a speed reducer shaft and moves synchronously, the worm gear sleeves the other end of the speed reducer shaft and rotates synchronously, and the worm gear drives the valve to rotate through a driving shaft; in the scheme, the servo comprises a shell arranged on the outer side of the shell, a servo motor is arranged inside the shell, a speed reducer and a worm gear are arranged, the servo motor is fixed in the shell of the servo motor and fastened, a motor gear is fastened at the shaft end of the servo motor and meshed with a speed reduction gear wheel which is used as the first-stage speed reduction, the speed reduction gear wheel is fastened at one end of a speed reduction shaft and synchronously rotates, a worm is fastened at the other end of the speed reduction shaft and synchronously rotates with the shaft, the worm is meshed with the worm gear arranged on the driving shaft, the power of the worm can be transmitted to the worm gear at the moment and drives the driving shaft to rotate, and then the valve is driven to rotate around the driving shaft, so that the purpose of controlling the entering amount of cooling air is achieved, wherein the servo is fixedly connected to the design position (relative to the position of the driving shaft) on the outer side of the shell, and the worm gear is stably meshed with the worm gear.
In the present scheme, the explanation about synchronous and asynchronous is as follows: each cylinder is provided with four valves, each valve is independently controlled by a corresponding valve server, and the intelligent controller can perform asynchronous or synchronous control between the cylinder head valve and the cylinder body valve and can also perform synchronous or asynchronous control between two valves in the same cavity, particularly according to the setting of control software and the requirements of an engine.
An intelligent temperature management system for controlling the flow control heat dissipation assembly as recited in any one of claims 1 to 5, comprising a controller for controlling the heat dissipation capacity of the cylinder head cooling cavity and the cylinder body cooling cavity respectively. According to the scheme, the entering amount of cooling air is further accurately controlled, and the intelligent temperature management system is further arranged, so that the opening degree of the valve can be accurately controlled through the intelligent temperature management system, the entering amount of the cooling air is controlled, and the effect of controlling the heat dissipation amount is achieved; the cylinder head part and the cylinder body part have different requirements on temperature, so that the cylinder head part and the cylinder body part need to be respectively radiated; the controller also comprises a heat dissipation control part of the cylinder head cooling cavity and a heat dissipation control part of the cylinder body cooling cavity, and the heat dissipation control parts are used for respectively controlling the heat dissipation capacity of the cylinder head cooling cavity and the heat dissipation capacity of the cylinder body cooling cavity.
The heat dissipation method of the intelligent temperature management system comprises the following control steps of controlling the heat dissipation capacity of the cylinder head cooling cavity by the controller:
the first step is as follows: acquiring a total combustion heat value of the engine;
the second step is that: acquiring the filling efficiency of a cylinder;
the third step: acquiring the actual combustion heat value of the cylinder according to the filling efficiency of the cylinder and the total combustion heat value of the engine;
the fourth step: obtaining the heat value to be dissipated by the cylinder head cooling cavity according to the actual combustion value of the cylinder;
the fifth step: acquiring the heat capacity of the atmosphere;
and a sixth step: according to the heat value to be dissipated by the cylinder head cooling cavity and the atmospheric heat capacity, obtaining air flow rate data required by heat dissipation of a flow guide cooling section in the cylinder head cooling cavity;
the seventh step: controlling the opening and closing of the first valve assembly according to the air flow rate data to provide cooling air with corresponding speed for a flow guide cooling section in the cylinder head cooling cavity;
the control step that the controller controls the heat dissipation capacity of the cooling cavity of the cylinder body comprises the following steps:
the first step is as follows: obtaining the optimal matching temperature of a cylinder body brake;
the second step is that: acquiring opening data of the second valve assembly according to the optimal matching temperature of the cylinder body brake;
the third step: and controlling the opening and closing of the second valve assembly according to the opening data of the second valve assembly to provide cooling air with corresponding speed for the flow guide cooling section in the cooling cavity of the cylinder body.
Further preferably, the specific control steps of the controller for controlling the heat dissipation capacity of the cylinder head cooling cavity comprise:
the first step is as follows: the engine is provided with a throttle opening sensor, a fuel flow sensor, a gate pressure sensor, a mixed gas temperature sensor, an oxygen sensor, an atmospheric humidity sensor, an exhaust temperature sensor, an atmospheric pressure sensor, an atmospheric temperature sensor, a cooling air inlet flow velocity sensor, a cylinder head temperature sensor and a rotating speed sensor;
the second step is that: calculating to obtain the total combustion heat value of the engine according to the data transmitted by the throttle opening sensor and the fuel flow sensor and the set value of the air-fuel ratio of the engine;
the third step: calculating the filling efficiency of the cylinder according to data transmitted by the gate pressure sensor and the mixed gas temperature sensor;
the fourth step: calculating to obtain the actual combustion heat value of the cylinder according to the filling efficiency of the cylinder, data transmitted by an oxygen sensor, an atmospheric humidity sensor and an exhaust temperature sensor and working condition data of a spark plug;
the fifth step: obtaining the heat value to be dissipated by the cylinder head cooling cavity according to the actual combustion value of the cylinder;
and a sixth step: calculating the heat capacity of the atmosphere at the moment according to data transmitted by the atmospheric pressure sensor, the atmospheric temperature sensor and the atmospheric humidity sensor;
the seventh step: calculating air flow rate data required by heat dissipation of a diversion cooling section in a cooling cavity of the cylinder head according to data transmitted by a cooling air inlet flow rate sensor, a cylinder head temperature sensor and a rotating speed sensor, area data of a cylinder head radiator and air heat capacity data;
eighth step: the air flow rate data is modulated into a servo motor control signal through the modulation module, the opening and closing of the first valve assembly are controlled, and cooling air with corresponding speed is provided for a flow guide cooling section in the cylinder head cooling cavity.
Further optimize, the specific control step that the controller controlled the cylinder body cooling chamber heat dissipation capacity includes:
the first step is as follows: a cylinder temperature sensor is arranged on the engine;
the second step is that: obtaining the optimal matching temperature of the cylinder body machine brake according to data transmitted by an atmospheric pressure sensor, an atmospheric temperature sensor and a fuel flow sensor;
the third step: calculating to obtain the opening data of the second valve assembly according to the data transmitted by the cylinder body temperature sensor, the optimal matching temperature of the cylinder body brake and the cylinder body heat conduction value;
the fourth step: the opening data of the second valve assembly is modulated into a servo motor control signal by the modulation module, the opening and closing of the second valve assembly are controlled, cooling air with corresponding speed is provided for a flow guide cooling section in a cooling cavity of the cylinder body, and temperature control compensation is carried out on the mixed gas.
The air-cooled piston engine is provided with an intelligent temperature management system, one or more cylinders of the engine are provided, a multi-cylinder temperature balance control unit and a multi-cylinder temperature control compensation unit are arranged in the intelligent temperature management system, the multi-cylinder temperature balance control unit can control the temperature of each cylinder respectively, and the multi-cylinder temperature control compensation unit can perform temperature control compensation on each cylinder respectively; in the scheme, the engine is provided with an intelligent temperature management system, the intelligent temperature management system can be applied to a single-cylinder or multi-cylinder engine, a flow control heat dissipation assembly can be arranged in each cylinder, and the intelligent temperature management system can respectively control the flow control heat dissipation assemblies in each cylinder to achieve the purpose of accurate control; the intelligent temperature management system is also internally provided with a multi-cylinder temperature balance control unit and a multi-cylinder temperature control compensation unit, wherein the multi-cylinder temperature balance control unit can simultaneously control the temperature of a plurality of cylinder heads to be consistent through the analysis of the data of the cylinder head temperature sensor, so that the working condition of the multi-cylinder engine is more uniform, and the vibration and the abrasion are more optimized; the multi-cylinder temperature control compensation unit can perform temperature rise or temperature drop compensation on the plurality of cylinder heads, so that the multi-cylinder temperature control compensation and the multi-cylinder temperature balance can be asynchronous, but the temperature of the cylinder body is controlled to be the same.
The invention has the following beneficial effects:
(1) active heat dissipation control: the heat dissipation control based on the working condition of the engine can quickly and accurately provide heat dissipation for the engine, effectively solves the problem of heat conduction delay of water-cooled engines, and inhibits abnormal abrasion and abnormal combustion of a cylinder body caused by temperature change;
(2) the engine heat dissipation zone control meets requirements of different areas on temperature control, emission is reduced, oil consumption is reduced, abrasion is reduced, and adaptability, reliability and safety are improved;
(3) the temperature balance of multiple cylinders makes each cylinder of the engine in the same temperature state, the combustion characteristic and the lubrication characteristic are in the same level, the loads of the cylinders are consistent, the output characteristic of the engine is greatly improved, and the vibration is reduced. The uniform temperature ensures that the abrasion of each cylinder is the same, and the maintenance is more convenient and faster;
(4) the expansion control section is designed to ensure that the engine keeps enough temperature control allowance in low-temperature and high-temperature and low-temperature and high-temperature change environments, so that the environmental adaptability is improved;
(5) the stability of the working temperature of the improvement of the heat dissipation efficiency greatly reduces the emission of an engine, greatly improves the fuel economy, and reduces the environmental protection and energy pressure;
(6) the engine has the advantages of simple structure, light weight and low manufacturing cost, and can be additionally installed on the existing engine and also can be introduced during the design of the engine.
Drawings
Fig. 1 is a schematic structural view of a flow control heat dissipation assembly according to the present invention;
FIG. 2 is a schematic structural view of a flow control heat dissipation assembly according to the present invention;
FIG. 3 is a top view of a flow control heat dissipation assembly according to the present invention;
FIG. 4 is a cross-sectional view of a flow control heat sink assembly according to the present invention;
FIG. 5 is a partial schematic view of a flow control heat dissipation assembly according to the present invention;
FIG. 6 is a front view of a two-cylinder engine, an embodiment of the present invention;
FIG. 7 is a bottom view of a two cylinder engine according to one embodiment of the present invention;
FIG. 8 is a side view of a two cylinder engine, an embodiment of the present invention;
FIG. 9 is a top view of an embodiment of the present invention, a dual cylinder engine, with the valve fully open;
FIG. 10 is a front view of a five cylinder engine provided by the present invention;
FIG. 11 is a front view of a flow control heat sink assembly according to the present invention with the shutter fully opened;
FIG. 12 is a bottom view of a flow control and heat sink assembly of the present invention with the valve fully open;
FIG. 13 is a front view of a flow control heat sink assembly according to the present invention with the shutter in a fully open position;
FIG. 14 is a bottom view of a flow control and heat sink assembly of the present invention with the valve in a fully open position;
FIG. 15 is a front view of a flow control and heat sink assembly of the present invention, showing the valve in a normal state;
FIG. 16 is a bottom view of a flow control and heat sink assembly of the present invention, showing a valve in a normal state;
FIG. 17 is a front view of a flow control heat sink assembly according to the present invention with the shutter in a half-closed position;
FIG. 18 is a bottom view of a valve-actuated semi-closed flow control and heat sink assembly of the present invention;
FIG. 19 is a front view of a flow control and heat sink assembly of the present invention with the shutter fully closed;
FIG. 20 is a bottom view of a flow control and heat sink assembly of the present invention with the valve fully closed;
fig. 21 is a code comparison diagram of the intelligent temperature management system provided by the present invention.
The reference numbers in the figures are: 1-shell, 2-expansion control section, 3-diversion cooling section, 4-partition plate, 5-heat sink, 6-spark plug mounting hole, 7-cylinder through hole, 8-valve, 9-driving shaft, 10-servo, 101-servo motor, 102-motor gear, 103-reduction gear wheel, 104-reduction gear shaft, 105-turbine worm, 106-shell, 107-key, 11-throttle opening sensor, 12-fuel flow sensor, 13-brake pressure sensor, 14-mixed gas temperature sensor, 15-oxygen sensor, 16-atmospheric humidity sensor, 17-exhaust temperature sensor, 18-spark plug, 19-atmospheric pressure sensor, 20-atmospheric temperature sensor, 21-cooling air inlet flow rate sensor, 22-cylinder head temperature sensor, 23-rotating speed sensor, 25-cylinder body temperature sensor, 26-engine, 27-cylinder head, 28-cylinder head cooling cavity and 29-cylinder body cooling cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 21, the flow-control heat dissipation assembly includes a housing 1, and an expansion control section 2 and a flow-guide cooling section 3 are sequentially disposed in the housing 1;
the opening end of the expansion control section 2 is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section 3, the opening end faces the direction of the flow guide cooling section 3, the caliber of the expansion control section 2 gradually converges, and the flow guide cooling section 3 is used for heat dissipation;
the shell 1 is also internally provided with a partition plate 4, the partition plate 4 sequentially penetrates through the expansion control section 2 and the flow guide cooling section 3, and the interior of the shell 1 is divided into a cylinder head cooling cavity 28 and a cylinder body cooling cavity 29;
the cylinder head cooling cavity 28 is internally provided with a first valve 8 assembly, the first valve 8 assembly is used for controlling the cooling air inlet amount in the cylinder head cooling cavity 28, the cylinder body cooling cavity 29 is internally provided with a second valve 8 assembly, and the second valve 8 assembly is used for controlling the cooling air inlet amount in the cylinder body cooling cavity 29.
In the prior art, because the air-cooled piston engine 26 has low cooling efficiency and temperature is not easy to control, the output of the power torque of the engine 26 is seriously influenced, so that the air-cooled piston engine 26 cannot be applied in a large quantity, and the heat dissipation of the cylinder head 27 part of the piston engine 26 and the heat dissipation of the cylinder body casing part have different requirements, wherein the cylinder head 27 part needs to dissipate heat quickly because of more concentrated heat, and the cylinder body part needs to reach a constant temperature, so the cylinder body part needs to be subjected to temperature control; in order to solve the problems, the scheme provides a flow control heat dissipation assembly which comprises a shell 1, wherein the shell 1 is a tubular body which is made of light metal, composite material or other high-temperature resistant materials and is provided with a hollow cavity, and cooling air can pass through the tubular body; the cross section of the tubular body is changed in multiple sections, so that cooling air flows according to a designed route and a designed flow speed, and the designed section is rectangular; the shell 1 is divided into an expansion control section 2 and a flow guide cooling section 3 from the front end to the rear end in sequence; the opening end of the expansion control section 2 is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section 3, the section area of the expansion control section 2 is larger than that of the flow guide cooling section 3, the caliber of the expansion control section is gradually reduced from the opening end to the flow guide cooling section 3, the expansion control section is horn-shaped, the caliber of the opening end of the expansion control section 2 is the largest, more cooling air can be received, the caliber of the expansion control section is gradually converged, the air pressure transmitted to the flow guide cooling section 3 is increased, the air flow rate is further improved, and the engine 26 is cooled more fully when the engine runs at low speed (the cooling air flow generated by a fan and a propeller is weaker) and high torque; wherein the diversion cooling section 3 is positioned at the rear end of the expansion control section 2 and is mutually matched with cooling air for radiating the cylinder body and the cylinder head 27. In the invention, for some large air-cooled piston engines, because the piston stroke is too long, the cylinder is too long, therefore, in the scheme, the expansion control section 2 and the diversion cooling section 3 are sequentially arranged in the shell, but the invention is not limited to the two sections, and can also have a multi-section form, and the optimal design is required according to the specific form of the actual engine.
In this embodiment, a partition plate 4 is further provided inside the casing 1, the partition plate is arranged along the length direction of the casing 1 and extends from the expansion control section 2 to the diversion cooling section 3, the inside of the casing 1 is divided into a cylinder head cooling chamber 28 and a cylinder block cooling chamber 29 from the central axis direction of the casing 1, at this time, the expansion control section 2 and the diversion cooling section 3 are both contained in the cylinder head cooling chamber 28 and the cylinder block cooling chamber 29, wherein the cylinder head cooling chamber 28 is arranged at a position corresponding to the cylinder head 27 of the engine 26, the cooling air flowing through the section takes away the heat through the cylinder head 27 of the engine 26 (the position where the top of the piston is located at the bottom dead center to the top part of the cooling fins 5 at the top of the cylinder head 27 is called as the cylinder head 27) to dissipate the heat of the cylinder head 27, the cylinder block cooling chamber 29 is arranged at a position corresponding to the cylinder block of the engine 26, the cooling air flowing through the section is taken away the heat through the cylinder block of the engine 26 (the position where the top of the piston is located at the bottom dead center to the connecting part of the cylinder block and the crankcase is called as the cylinder block), dissipating heat for the cylinder body; and wherein there are the first valve 8 assemblies and second valve 8 assemblies in cylinder head cooling chamber 28 and cylinder block cooling chamber 29 separately, the control end can control two valve 8 assemblies separately at this moment, and achieve and control the cooling air admission amount in cylinder head cooling chamber 28 and cylinder block cooling chamber 29 separately, can meet the different demands of the partial heat dissipation of cylinder head 27 and cylinder block casing of the piston engine 26 at this moment.
In the embodiment, the flow guide cooling section 3 is internally provided with a radiating fin 5, and the circumferential outer ends of the radiating fins 5 are tightly attached to the side wall of the flow guide cooling section 3; in the scheme, in order to further improve the heat dissipation efficiency, the heat dissipation fins 5 are arranged in the flow guide cooling section 3, the circumferential end parts of the heat dissipation fins 5 are tightly attached to the inner side of the flow guide cooling section 3, so that the cooling air conveyed from the expansion control section 2 completely flows into the space of the heat dissipation fins 5 and is fully contacted with the heat dissipation fins 5 and the cylinder body, and the heat dissipation efficiency is improved, wherein the flow guide cooling section 3 is of equal diameter, and the cross section of the flow guide cooling section is tubular (or tubular according to the shapes of the cylinder and the heat dissipation fins 5), so that the cooling air can be fully guided; the diversion cooling section 3 is provided with a spark plug mounting hole 6 and a cylinder body through hole 7; in the scheme, in order to facilitate the disassembly and assembly of the spark plug 18, a spark plug mounting hole 6 is formed in the upper part of the diversion cooling section 3, namely the position close to the top of the cylinder head 27, and in order to facilitate the disassembly and assembly of the engine 26 casing, a cylinder body through hole 7 or a cylinder body through groove is formed in the lower part of the diversion cooling section 3, namely the position close to the cylinder body brake.
In this embodiment, each of the first valve 8 assembly and the second valve 8 assembly comprises two valves 8 arranged oppositely, the two valves 8 are mutually matched to realize air circulation or air blocking, through holes for driving shafts 9 are formed in the two opposite ends of the connecting position of the expansion control section 2 and the flow guide cooling section 3, the driving shafts 9 are inserted into the through holes for driving the driving shafts 9, and the side walls of the driving shafts 9 are connected with one ends of the valves 8 to drive the other ends of the valves 8 to rotate around the axis of the driving shafts 9; the scheme is to accurately control the entering amount of cooling air and further optimize the valve 8 components, wherein the first valve 8 component and the second valve 8 component both comprise two oppositely arranged valves 8, the valve 8 components are composed of valves 8 and a driving shaft 9, the valves 8 are made of light metal, composite materials or other high-temperature resistant materials, the valves 8 are plate-shaped, and are provided with two oppositely arranged valves 8 which are similar to a vertical hinged door, the plane shape of the air guide cooling section is polygonal, the section of the air guide cooling section can be polygonal or other shapes which are beneficial to reducing air resistance, the front ends (the parts which are positioned at the front ends of the expansion control sections 2 in a standard state) of the two valves 8 can be contacted in a fully closed state to block cooling air from flowing into the guide cooling section 3 from the expansion control ends, the rear end of the driving shaft is transversely provided with a driving shaft 9 through hole, and the driving shaft 9 can pass through the hole and is fixedly connected with the driving shaft 9 through a fastening screw to synchronously rotate with the driving shaft 9. The valve assembly is only a preferred scheme, and the valve assembly can also be a pull-out valve, a rotary valve and the like, so that the scheme can be realized.
In this embodiment, the driving shaft 9 is disposed at the connection position of the expansion control section 2 and the diversion cooling section 3, the valve 8 can rotate around the axis of the driving shaft 9, the front end of the valve 8 is always located at the intersection of the expansion control section 2 or the expansion control section 2 and the diversion cooling section 3 in the rotation process of the valve 8, when the valve 8 is in a fully closed state, the two valves 8 are both parallel to the intersection line of the expansion control section 2 and the diversion cooling section 3, and when the valve 8 is in a fully open state, the two valves 8 are opened and are respectively parallel to the side wall of the expansion control section 2; two side surfaces of the valve 8 are matched with side plates of the expansion section of the shell 1 by a small gap, can freely slide and can not allow cooling air to pass through; the section of the expansion control section 2, which is larger than that of the diversion cooling section 3, is designed to be hollow, so that the parts of the valve 8 except the parts at the front end are in an air passage state, and the valve 8 only contains cooling air for heat dissipation and smoothly passes through the cooling air to reduce air resistance; further, explanation of the shutter 8 being fully closed to fully opened: in the fully closed state, the state provided for the rapid warm-up operation of the engine 26 in cold conditions is not in the fully closed state of the shutter 8 after entering the working state. The valve 8 is fully opened in a high-temperature environment or a low-speed heavy load state, and the heat dissipation capacity of the valve 8 in the standard state is twice (in the scheme) after being fully opened, so that the limit state of the engine 26 can also guarantee heat dissipation. The standard state is the position state of the valve 8 under the use environment and the design condition of the engine 26.
In this embodiment, the device further comprises a server 10 disposed outside the housing 1, an output end of the server 10 controls the shutters 8 (8) to rotate through a driving shaft 9, and each of the shutters 8 is independently provided with one server 10. In this scheme, for the rotation of control valve 8, still be equipped with server 10 in the casing 1 outside, wherein all be equipped with a server 10 alone in every valve 8 department, make every valve 8 controlled alone, make not only can be synchronous state between the valve 8, also can be asynchronous state, the volume of entering and the radiating position of ability further accurate control cooling air, if the exhaust port end of side exhaust engine is higher than the heat of air inlet end, can be with the aperture increase that 8 valve 8 on one side of the gas vent set up, reach the balanced purpose of temperature.
In this embodiment, the servo 10 includes a housing 106 disposed outside the housing 1, a servo motor 101, a speed reducer and a worm gear 105 are disposed inside the housing 106, a motor gear 102 of the servo motor 101 and a speed reduction gear 103 of the speed reducer are engaged with each other, one end of a speed reduction shaft 104 is sleeved by the speed reduction gear 103 and moves synchronously, the other end of the speed reduction shaft 104 is sleeved by the worm gear 105 and rotates synchronously, and the worm gear 105 drives the valve 8 to rotate through a driving shaft 9; in the scheme, the servo 10 comprises a shell 106 arranged outside the shell 1, a servo motor 101, a reducer and a worm gear 105 are arranged inside the shell 106, wherein the servo motor 101 is fixed in the shell 1 of the servo 10 and fastened, a motor gear 102 is fastened at the shaft end of the servo 10, the motor gear 102 is meshed with a reduction gear 103 to serve as a first-stage reduction, the reduction gear 103 is fastened and synchronously rotated with one end of a reducer shaft 104, a worm is fastened at the other end of the reducer shaft 104 and synchronously rotated with the shaft, and the worm is further meshed with a worm gear arranged on the driving shaft 9, a key groove is formed in the excircle of the driving shaft 9, a key 107 is arranged in the key groove and is fastened and connected with the worm gear to synchronously rotate, the power of the worm can be transmitted to the worm gear to drive the driving shaft 9 to rotate, and further drive a valve 8 to rotate around the driving shaft 9, so as to achieve the purpose of controlling the entering amount of cooling air, wherein the servo 10 is fixed at the designed position outside the housing 1 (i.e. the position relative to the driving shaft 9) to make the worm and the worm wheel engaged stably. In the present invention, the internal structure of the servo 10 is not limited to the structure defined in the present embodiment, and may be driven in other forms.
In the present embodiment, the explanation about the synchronization and the asynchronization is: each cylinder is provided with four valves 8, each valve 8 is independently controlled by a corresponding valve 8 server 10, and an intelligent controller can perform asynchronous or synchronous control between the valve 8 of the cylinder head 27 and the valve 8 of the cylinder body, and can also perform synchronous or asynchronous control between two valves 8 in the same cavity, particularly according to the setting of control software and the requirements of an engine 26.
Example two: the present embodiment is further optimized based on the first embodiment, and the intelligent temperature management system is used for controlling the flow control heat dissipation assembly of any one of claims 1 to 5, and comprises a controller, wherein the controller is used for controlling heat dissipation amounts of the cylinder head cooling cavity 28 and the cylinder body cooling cavity 29 respectively. In the scheme, the entering amount of cooling air is further accurately controlled, and the intelligent temperature management system is also arranged, so that the opening degree of the valve 8 can be accurately controlled through the intelligent temperature management system, the entering amount of the cooling air is controlled, and the effect of controlling the heat dissipation amount is achieved; the cylinder head 27 part and the cylinder body part have different requirements on temperature, so that the cylinder head 27 part and the cylinder body part need to be respectively radiated; and the controller also comprises a heat dissipation control part of the cylinder head cooling cavity 28 and a heat dissipation control part of the cylinder body cooling cavity 29, which are used for respectively controlling the heat dissipation amount of the cylinder head cooling cavity 28 and the heat dissipation amount of the cylinder body cooling cavity 29.
Example three: in this embodiment, the heat dissipation method of the intelligent temperature management system is further optimized on the basis of the second embodiment, and the specific working principle of the control step of controlling the heat dissipation capacity of the cylinder head cooling cavity 28 by the controller is as follows: the system calculates the timely heat dissipation capacity of the engine 26 according to the operation and analysis results from the data of each sensor, and the calculation results are converted into control signals of the opening degree of the valve 8, namely, the active heat dissipation control is carried out, so that the temperature conduction delay is eliminated. Firstly, calculating data sent by a throttle opening sensor 11 and a fuel flow sensor 12 and an air-fuel ratio set value of an engine to obtain a total combustion heat value of the engine 26; further, the filling efficiency of the cylinder is calculated by a casing pressure sensor and a mixed gas temperature sensor 14; further, the combustion condition of the cylinder is analyzed by using the filling efficiency, the data of an oxygen sensor 15, the data of an atmospheric humidity sensor 16, the data of an exhaust temperature sensor 17 and the working condition data of a spark plug 18, so that the actual combustion heat value of the cylinder is obtained; further, the actual combustion heat value of the cylinder is used for reducing the heat value taken away by exhaust, piston and cylinder body conduction, and the heat value to be dissipated by part of the radiating fins 5 of the cylinder head 27 is obtained; further, the computer calculates the heat capacity of the atmosphere at the moment, namely the heat dissipation efficiency of the air, according to the air pressure sensor, the atmospheric temperature sensor 20 and the atmospheric humidity sensor 16; further, air flow velocity data required by heat dissipation of the cylinder body of the flow guide section is obtained through calculation by using air heat capacity data, cooling air inlet flow velocity sensor 21 data, cylinder head 27 radiator area data, cylinder head temperature sensor 22 data and rotating speed sensor 23 data; further, the air flow rate data is modulated into a control signal of the servo motor 101 through the modulation module, and the control valve 8 provides cooling air with a corresponding speed for the flow guide section, so that the heat dissipation heat of the cylinder head 27 is accurately taken away. When the engine 26 is multi-cylinder, the number of hardware parts of the system is large, such as the number of cylinders. When the engine 26 is multi-cylinder, there is a multi-cylinder temperature equalization control part between the multiple systems, and the system can simultaneously control the temperature of the multiple cylinder heads 27 to be consistent through the analysis of the data of the cylinder head temperature sensors 22, so that the working condition of the multi-cylinder engine 26 is more uniform, and the vibration and the abrasion are more optimized.
The specific working principle of the control step of the controller controlling the heat dissipation capacity of the cylinder cooling cavity 29 is as follows: the partial heat dissipation of the cylinder head 27 and the partial heat dissipation of the cylinder casing of the piston engine 26 have different requirements, and taking the two-stroke engine 26 with higher temperature requirement of the cylinder casing as an example, the two-stroke cylinder casing part shares the functions of intake, accommodation, exhaust compression and the like of mixed gas, so the temperature of the part is also very critical. If the atmospheric temperature of the aviation two-stroke engine 26 is reduced along with the increase of the flying height, the temperature of a cylinder body casing and the temperature of mixed gas are also reduced along with the decrease of the flying height, the problem is caused that the temperature of combustible mixed gas entering a cylinder is too low, the combustion speed of the mixed gas is directly influenced, and the working condition of the engine 26 is deteriorated, the emission is poor, and the oil consumption is increased under the equal power; in addition, the temperature of the cylinder body casing is continuously reduced, so that the metal is shrunk, the abrasion of the part of moving parts is aggravated, and the system can well solve the problems. The working process is as follows: firstly, a computer calculates and compares the data of an atmospheric temperature sensor 20, the data of an atmospheric pressure sensor 19 and the data of a fuel flow sensor 12 (the heat is absorbed to reduce the temperature of mixed gas during gasoline atomization) to obtain the optimal matching temperature of a cylinder body casing, and provides temperature control compensation for the mixed gas with too low temperature; further, calculating the opening data of the valve 8 according to the optimal temperature data of the cylinder casing, the heat conduction value of the cylinder and the data of the cylinder head temperature sensor 22; furthermore, the opening data of the valve 8 is modulated into a control signal for the servo motor 101 by the modulation module, and the valve 8 is controlled to provide cooling air with corresponding speed for the flow guide section, so that the temperature of the casing part of the cylinder body is raised to perform temperature control compensation on the mixed gas. The multi-cylinder time temperature control compensation and the multi-cylinder temperature balance can be asynchronous, but the temperature of the cylinder body is controlled to be the same.
Example four: this example is further optimized on the basis of example 3,
the engine 26 is provided with an intelligent temperature management system, one or more cylinders of the engine 26 are provided, a multi-cylinder temperature balance control unit and a multi-cylinder temperature control compensation unit are arranged in the intelligent temperature management system, the multi-cylinder temperature balance control unit can control the temperature of each cylinder respectively, and the multi-cylinder temperature control compensation unit can perform temperature control compensation on each cylinder respectively; in the scheme, the engine 26 is provided with an intelligent temperature management system, the intelligent temperature management system can be applied to a single-cylinder or multi-cylinder engine 26, a flow control heat dissipation assembly can be arranged in each cylinder, and the intelligent temperature management system can respectively control the flow control heat dissipation assemblies in each cylinder to achieve the purpose of accurate control; a multi-cylinder temperature balance control unit and a multi-cylinder temperature control compensation unit are also arranged in the intelligent temperature management system, wherein the multi-cylinder temperature balance control unit can simultaneously control the temperature of the multiple cylinder heads 27 to be consistent through the analysis of the data of the cylinder head temperature sensor 22, so that the working condition of the multi-cylinder engine 26 is more uniform, and the vibration and the abrasion are more optimized; the multi-cylinder temperature control compensation unit can perform temperature rise or temperature drop compensation on the plurality of cylinder heads, so that the multi-cylinder temperature control compensation and the multi-cylinder temperature balance can be asynchronous, but the temperature of the cylinder body is controlled to be the same. As shown in fig. 10, the multi-cylinder engine is a five-cylinder engine, wherein the multi-cylinder temperature equalization control unit can control the opening degree of the valve 8 through the analysis of the data of the cylinder head temperature sensor 22, so that the five cylinders all work at the same temperature and in the range of the optimal temperature, and because the working temperature of the cylinder is one of the factors influencing the combustion speed of the mixture, the working temperature of the five cylinder heads 27 is controlled, so that the combustion speed of the mixture in the cylinder can be uniform, the working condition of the multi-cylinder engine 26 can be consistent, the vibration of the engine can be reduced, the torque of each cylinder can be smoother, the efficiency can be further improved, and the emission can be reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The flow control heat dissipation assembly comprises a shell (1), and is characterized in that an expansion control section (2) and a flow guide cooling section (3) are sequentially arranged in the shell (1);
the opening end of the expansion control section (2) is used for receiving cooling air and transmitting the cooling air to the flow guide cooling section (3), the opening end faces the direction of the flow guide cooling section (3), the caliber of the expansion control section (2) gradually converges, and the flow guide cooling section (3) is used for heat dissipation;
the expansion control section (2) and the flow guide cooling section (3) sequentially penetrate through the partition plate (4), and the interior of the shell (1) is divided into a cylinder head cooling cavity (28) and a cylinder body cooling cavity (29);
the cylinder head cooling cavity (28) is internally provided with a first valve assembly, the first valve assembly is used for controlling the cooling air inlet amount in the cylinder head cooling cavity (28), the cylinder body cooling cavity (29) is internally provided with a second valve assembly, and the second valve assembly is used for controlling the cooling air inlet amount in the cylinder body cooling cavity (29).
2. The flow control and heat dissipation assembly according to claim 1, wherein heat dissipation fins (5) are arranged in the flow guide cooling section (3), and the circumferential outer ends of the heat dissipation fins (5) are tightly attached to the side wall of the flow guide cooling section (3).
3. The flow control and heat dissipation assembly according to claim 1, wherein the first valve assembly and the second valve assembly each comprise two oppositely disposed valves (8), the two valves (8) cooperate with each other to circulate or block air, drive shaft through holes are formed in opposite ends of the connection position of the expansion control section (2) and the flow guide cooling section (3), a drive shaft (9) penetrates through the drive shaft through holes, and the side wall of the drive shaft (9) is connected with one end of the valve (8) to drive the other end of the valve (8) to rotate around the axis of the drive shaft (9).
4. A flow control and heat dissipation assembly as claimed in claim 3, further comprising a server (10) disposed outside the housing (1), wherein the output end of the server (10) controls the rotation of the shutters (8) through the driving shaft (9), and each of the shutters (8) is individually provided with one server (10).
5. The flow control and heat dissipation assembly according to claim 4, wherein the servo (10) comprises a housing (106) arranged outside the housing (1), a servo motor (101), a speed reducer and a worm gear (105) are arranged inside the housing (106), a motor gear (102) of the servo motor (101) and a speed reduction gear (103) of the speed reducer are meshed with each other, one end of a speed reduction shaft (104) is sleeved by the speed reduction gear (103) and moves synchronously, the other end of the speed reduction shaft (104) is sleeved by the worm gear (105) and rotates synchronously, and the worm gear (105) drives the valve (8) to rotate through the driving shaft (9).
6. The intelligent temperature management system is used for controlling the flow control heat dissipation assembly of any one of claims 1-5, and comprises a controller, wherein the controller is used for controlling heat dissipation capacity of the cylinder head cooling cavity (28) and the cylinder body cooling cavity (29) respectively.
7. A heat dissipation method using the intelligent temperature management system of claim 6, wherein the step of controlling the heat dissipation of the cylinder head cooling chamber (28) by the controller comprises:
the first step is as follows: acquiring a total combustion heat value of the engine;
the second step is that: acquiring the filling efficiency of a cylinder;
the third step: acquiring the actual combustion heat value of the cylinder according to the filling efficiency of the cylinder and the total combustion heat value of the engine;
the fourth step: obtaining the heat value to be dissipated by the cylinder head cooling cavity (28) according to the actual combustion value of the cylinder;
the fifth step: acquiring the heat capacity of the atmosphere;
and a sixth step: according to the heat value to be dissipated by the cylinder head cooling cavity (28) and the atmospheric heat capacity, obtaining air flow rate data required by heat dissipation of the flow guide cooling section (3) in the cylinder head cooling cavity (28);
the seventh step: according to the air flow rate data, opening and closing of the first valve assembly are controlled, and cooling air with corresponding speed is provided for a flow guide cooling section (3) in the cylinder head cooling cavity (28);
the control step of the controller for controlling the heat dissipation of the cylinder cooling cavity (29) comprises the following steps:
the first step is as follows: obtaining the optimal matching temperature of a cylinder body brake;
the second step is that: acquiring opening data of the second valve assembly according to the optimal matching temperature of the cylinder body brake;
the third step: and controlling the opening and closing of the second valve assembly according to the opening data of the second valve assembly to provide cooling air with corresponding speed for the diversion cooling section (3) in the cooling cavity (29) of the cylinder body.
8. The method for dissipating heat from an intelligent temperature management system according to claim 7, wherein the specific step of controlling the heat dissipation of the cylinder head cooling cavity (28) by the controller comprises:
the first step is as follows: an engine (26) is provided with a throttle opening sensor (11), a fuel flow sensor (12), a brake pressure sensor (13), a mixed gas temperature sensor (14), an oxygen sensor (15), an atmospheric humidity sensor (16), an exhaust temperature sensor (17), an atmospheric pressure sensor (19), an atmospheric temperature sensor (20), a cooling air inlet flow velocity sensor (21), a cylinder head temperature sensor (22) and a rotating speed sensor (23);
the second step is that: calculating to obtain the total combustion heat value of the engine according to data transmitted by a throttle opening sensor (11) and a fuel flow sensor (12) and an air-fuel ratio set value of the engine;
the third step: calculating the filling efficiency of the cylinder according to data transmitted by a brake pressure sensor (13) and a mixed gas temperature sensor (14);
the fourth step: calculating the actual combustion heat value of the cylinder according to the filling efficiency of the cylinder, data transmitted by an oxygen sensor (15), an atmospheric humidity sensor (16) and an exhaust temperature sensor (17) and working condition data of a spark plug (18);
the fifth step: obtaining the heat value to be dissipated by the cylinder head cooling cavity (28) according to the actual combustion value of the cylinder;
and a sixth step: calculating the heat capacity of the atmosphere at the moment according to data transmitted by an atmospheric pressure sensor (19), an atmospheric temperature sensor (20) and an atmospheric humidity sensor (16);
the seventh step: calculating air flow rate data required by heat dissipation of a diversion cooling section (3) in a cylinder head cooling cavity (28) according to data transmitted by a cooling air inlet flow rate sensor (21), a cylinder head temperature sensor (22) and a rotating speed sensor (23) and area data and air heat capacity data of a cylinder head radiator;
eighth step: the air flow rate data is modulated into a servo motor control signal through the modulation module, the opening and closing of the first valve assembly are controlled, and cooling air with corresponding speed is provided for the flow guide cooling section (3) in the cylinder head cooling cavity (28).
9. The method for dissipating heat of an intelligent temperature management system according to claim 7, wherein the specific step of controlling the amount of heat dissipated by the cylinder cooling chamber (29) by the controller comprises:
the first step is as follows: a cylinder temperature sensor (25) is arranged on the engine (26);
the second step is that: obtaining the optimal matching temperature of the cylinder body machine brake according to data transmitted by an atmospheric pressure sensor (19), an atmospheric temperature sensor (20) and a fuel flow sensor (12);
the third step: calculating the opening data of the second valve assembly according to the data transmitted by the cylinder body temperature sensor (25), the optimal matching temperature of the cylinder body brake and the cylinder body heat conduction value;
the fourth step: the opening data of the second valve assembly is modulated into a servo motor control signal by the modulation module, the opening and closing of the second valve assembly are controlled, cooling air with corresponding speed is provided for a flow guide cooling section (3) in a cylinder cooling cavity (29), and temperature control compensation is carried out on the mixed gas.
10. The air-cooled piston engine is characterized in that the engine (26) is provided with the intelligent temperature management system according to claim 6, one or more cylinders of the engine (26) are provided, a multi-cylinder temperature equalization control unit and a multi-cylinder temperature control compensation unit are arranged in the intelligent temperature management system, the multi-cylinder temperature equalization control unit can respectively control the temperature of each cylinder, and the multi-cylinder temperature control compensation unit can respectively perform temperature control compensation on each cylinder.
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