CN112360592A - Crankcase ventilation regulating system and control method thereof - Google Patents
Crankcase ventilation regulating system and control method thereof Download PDFInfo
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- CN112360592A CN112360592A CN202011065226.1A CN202011065226A CN112360592A CN 112360592 A CN112360592 A CN 112360592A CN 202011065226 A CN202011065226 A CN 202011065226A CN 112360592 A CN112360592 A CN 112360592A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/0011—Breather valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0005—Crankcase ventilating or breathing with systems regulating the pressure in the carter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/0044—Layout of crankcase breathing systems with one or more valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0077—Engine parameters used for crankcase breather systems
- F01M2013/0088—Rotation speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0077—Engine parameters used for crankcase breather systems
- F01M2013/0094—Engine load
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a crankcase ventilation adjusting system and a control method, comprising a crankcase, a crank gas channel and an oil-gas separator; one end of the crank gas channel is connected with the crankcase, and the other end of the crank gas channel is connected with the oil-gas separator; the crankcase ventilation regulating system further comprises a sensor assembly, a controller and a crank regulator; the crank regulator is communicated with the crank gas channel; the crank regulator is provided with an oil duct, an engine oil pressure control valve, an oil pressure cavity, a pressure piece and a regulating assembly; the oil pressure cavity is communicated with the oil duct, the pressure piece is assembled in the oil pressure cavity and connected with the adjusting assembly, and the engine oil pressure control valve is installed in the oil duct; the controller controls the opening and closing of the engine oil pressure control valve according to a real-time signal measured by the sensor assembly, adjusts the oil quantity of the oil pressure cavity, enables the pressure piece to move along the oil pressure cavity, enables the adjusting assembly to rotate to a standard angle, and adjusts the speed of the crank gas flowing to the oil-gas separator.
Description
Technical Field
The invention relates to the field of engines, in particular to a crankcase ventilation adjusting system and a control method of the crankcase ventilation adjusting system.
Background
With the continuous development of engine technology, the power performance of the engine is continuously enhanced, but the amount of the crank gas leaked to the crankcase during the operation of the engine is also increased due to the enhanced power performance. The crank gas comprises a mixed gas of air, fuel oil and engine oil and waste gas generated after combustion. If the crank gas is retained in the crankcase, water vapor contained in the waste gas is easy to condense in engine oil to form foam, the engine oil supply is damaged, the engine oil in the crankcase is thinned, and meanwhile, the physical parameters of the engine oil are changed, so that the engine operation is influenced; more seriously, the waste gas also contains sulfur dioxide, the sulfur dioxide generates sulfurous acid when meeting water, the sulfurous acid generates sulfuric acid when meeting oxygen in the air, and the occurrence of the acidic substances not only causes the engine oil to deteriorate, but also causes the parts in the engine to be corroded.
In order to solve the problems, researchers use a crankcase ventilation regulating system to pump the triton gas out of a crankcase and carry out oil-gas separation on the triton gas so as to achieve the purposes of protecting engine oil, prolonging the service life of the engine oil, reducing the corrosion of parts, reducing pollutant emission and improving the economy of an engine. However, in the use process of the crankcase ventilation adjusting system, the existing crankcase ventilation adjusting system is found to have low efficiency in processing the crank gas, and still has the problems that a small amount of crank gas is retained in the crankcase, the oil supply is damaged, and parts in an engine are corroded.
Disclosure of Invention
The embodiment of the invention provides a crankcase ventilation adjusting system and a control method of the crankcase ventilation adjusting system, and aims to solve the problem that an existing crankcase ventilation adjusting system is low in separation efficiency.
A crankcase ventilation regulating system comprises a crankcase, a crank gas channel and an oil-gas separator; one end of the crank gas channel is connected with the crankcase, and the other end of the crank gas channel is connected with the oil-gas separator; the crankcase ventilation regulating system further comprises a sensor assembly, a controller and a crank regulator; the triton regulator is communicated with the triton gas channel; the crank regulator is provided with an oil duct, an engine oil pressure control valve, an oil pressure cavity, a pressure piece and a regulating assembly; the oil pressure cavity is communicated with the oil duct, the pressure piece is assembled in the oil pressure cavity and connected with the adjusting assembly, and the engine oil pressure control valve is installed in the oil duct; the controller controls the opening and closing of the engine oil pressure control valve according to a real-time signal measured by the sensor assembly, adjusts the oil quantity of the oil pressure cavity, enables the pressure piece to move along the oil pressure cavity, enables the adjusting assembly to rotate to a standard angle, and adjusts the speed of the crank gas flowing to the oil-gas separator.
Preferably, the crankcase ventilation adjusting system further comprises an engine camshaft, and an installation groove is formed in the engine camshaft; the adjusting component comprises an impeller, wherein a first side surface of the impeller extends outwards to form impeller teeth, and the impeller teeth are installed in the installation grooves.
Preferably, the adjusting assembly further comprises an elastic pushing member, a blade, a fixing rod and a rotating rod; one end of the elastic pushing piece is connected with the pressure piece, and the other end of the elastic pushing piece is abutted against the first side face; one end of the fixed rod is fixedly arranged with the impeller, and the other end of the fixed rod extends out of the impeller and is connected with the blades; the impeller is provided with a strip-shaped groove along the axial direction, one end of the rotating rod is connected with the elastic pushing piece, and the other end of the rotating rod extends out of the strip-shaped groove to be connected with the blades.
Preferably, the crankcase ventilation adjustment system further comprises an air cleaner, an intake air duct, and a cylinder head; one end of the air inlet pipeline is connected with the air filter, and the other end of the air inlet pipeline is connected with an engine air inlet channel of the cylinder cover; the crank adjuster comprises an adjuster shell, an air inlet and an air outlet which are arranged on the adjuster shell; the air inlet is connected with the air inlet pipeline, and the air outlet is connected with the curved gas channel.
Preferably, the crank regulator further comprises an inlet check valve provided on the air inlet.
Preferably, the crankcase ventilation adjustment system further comprises a large load passage and a small load passage; the oil-gas separator comprises a large-load gas outlet and a small-load gas outlet; one end of the heavy load channel is connected with the heavy load air outlet, and the other end of the heavy load channel is connected with the air inlet pipeline; one end of the small load channel is connected with the small load air outlet, and the other end of the small load channel is connected with the engine air inlet.
Preferably, the crankcase ventilation adjusting system further comprises a throttle valve disposed between a position where the large load passage is connected to the intake duct and a position where the small load passage is connected to the engine intake duct.
The embodiment of the invention provides a crankcase ventilation adjusting system, wherein a controller adjusts the opening and closing of an engine oil pressure control valve according to a real-time signal measured by a sensor assembly so as to adjust the oil quantity of an oil pressure cavity, and the pressure generated by the oil quantity in the oil pressure cavity pushes a pressure piece to move along the oil pressure cavity so as to rotate an adjusting assembly to a standard angle, so that the flow speed of a crank gas can be adjusted as required, intelligent adjustment is realized, and the oil-gas separation efficiency is improved.
A control method of a crankcase ventilation regulating system comprises the following steps:
acquiring a real-time signal sent by a sensor assembly, and determining the real-time rotating speed and the real-time load of an engine according to the real-time signal;
acquiring a standard angle of an adjusting component according to the real-time rotating speed and the real-time load of the engine, and generating an oil quantity control signal based on the standard angle;
based on the oil mass control signal control machine oil pressure control valve switching, adjust the oil mass in oil pressure chamber, make pressure piece move along oil pressure chamber to rotate adjusting part to the standard angle, adjust the speed that the gas flow direction of cranking gas oil and gas separator.
Preferably, the real-time signals comprise engine oil temperature, cooling water temperature, engine real-time rotating speed, intake pressure, intake air temperature and oxygen concentration; the real-time signal that the sensor subassembly sent is obtained, engine real-time rotational speed and the real-time load of engine of confirming the engine according to the real-time signal includes:
receiving the engine oil temperature and the cooling water temperature sent by the sensor assembly;
judging whether the current working condition of the engine is in a cold start working condition or a warm working condition according to the engine oil temperature and the cooling water temperature;
and if the current working condition is not in a cold start working condition or a warm working condition, acquiring the real-time rotating speed of the engine and determining the real-time load of the engine according to the air inlet pressure, the air inlet temperature and the oxygen concentration.
Preferably, the acquiring a standard angle of an adjusting assembly according to the real-time engine speed and the real-time engine load, and generating an oil quantity control signal based on the standard angle includes:
and inquiring a standard angle table according to the real-time rotating speed and the real-time load of the engine, acquiring a standard angle of the blade corresponding to the real-time rotating speed and the real-time load of the engine, and acquiring an oil quantity control signal based on the standard angle.
According to the control method of the crankcase ventilation adjusting system, the standard angle of the adjusting component matched with the real-time rotating speed and the real-time load of the engine is obtained, the oil quantity control signal is obtained based on the standard angle, and technical support is provided for adjusting the flow speed of the crank gas according to actual needs in the follow-up process. The oil quantity of the oil pressure cavity is controlled by controlling the opening and closing of the oil pressure control valve based on the oil quantity control signal, so that the pressure piece moves along the oil pressure cavity, the adjusting assembly is rotated to a standard angle, the speed of the crank gas flowing to the oil-gas separator is adjusted, the oil quantity in the oil pressure cavity is adjusted, the purpose of controlling the standard angle of the adjusting assembly is achieved, and the crank gas flowing speed is adjusted according to actual needs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic illustration of a crankcase ventilation adjustment system in accordance with an embodiment of the invention;
FIG. 2 is a schematic illustration of a crankcase ventilation adjustment system according to an embodiment of the invention;
FIG. 3 is a schematic structural view of an engine camshaft according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the construction of a bellcrank regulator in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of an adjustment assembly in accordance with an embodiment of the present invention;
FIG. 6 is another schematic diagram of the construction of a tune adjusting assembly in accordance with an embodiment of the present invention;
FIG. 7 is a flow chart of a method of controlling the crankcase ventilation adjustment system in accordance with an embodiment of the invention;
FIG. 8 is another flow chart of a method of controlling a crankcase ventilation adjustment system in accordance with an embodiment of the invention.
Wherein the content of the first and second substances,
10. an engine cylinder; 11. a crankcase; 12. a cylinder head; 121. an engine intake; 13. a cylinder head cover;
20. a triton gas channel; 21. a first channel; 22. a second channel;
30. an oil-gas separator;
40. a triton regulator; 41. an oil passage; 411. an oil drainage channel; 412. a high pressure oil passage; 42. an engine oil pressure control valve; 43. an adjustment assembly; 431. an impeller; 432. impeller teeth; 433. an elastic pusher; 434. a blade; 435. fixing the rod; 436. rotating the rod; 437. a strip-shaped groove; 44. an inlet check valve; 45. a regulator housing; 46. an air inlet; 47. an air outlet;
50. an engine camshaft; 51. mounting grooves;
60. an air cleaner;
70. an air intake duct; 71. a throttle valve;
80. a heavy load channel; 81. a heavy duty check valve;
90. a small load channel; 91. a small load check valve.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a crankcase ventilation regulating system, as shown in fig. 1, 3, 4, 5 and 6, comprising a crankcase 11, a crank gas channel 20 and an oil-gas separator 30; one end of the crank gas channel 20 is connected with the crankcase 11, and the other end is connected with the oil-gas separator 30; the crankcase ventilation regulating system further comprises a sensor assembly (not shown), a controller (not shown) and a crank regulator 40, the crank regulator 40 being in communication with the crank gas passage 20; the crank regulator 40 is provided with an oil passage 41, an oil pressure control valve 42, an oil pressure chamber (not shown), a pressure member (not shown) and a regulating assembly 43; the oil pressure cavity is communicated with the oil channel 41, the pressure piece is assembled in the oil pressure cavity and connected with the adjusting assembly 43, and the engine oil pressure control valve 42 is installed in the oil channel 41; the controller controls the opening and closing of the oil pressure control valve 42 according to the real-time signal detected by the sensor assembly, and adjusts the oil amount of the oil pressure cavity, so that the pressure member moves along the oil pressure cavity, the adjusting assembly 43 rotates to a standard angle, and the speed of the crank gas flowing to the oil-gas separator 30 is adjusted.
As shown in fig. 1, the crank gas passage 20 includes a first passage 21 and a second passage 22 which are communicated with each other, wherein the first passage 21 is connected to the crankcase 11, the second passage 22 is connected to the gas-oil separator 30, the first passage 21 is disposed in a vertical direction, the second passage 22 is disposed in a horizontal direction, a crank regulator 40 is disposed on the second passage 22, and the crank regulator 40 blows crank gas in the horizontal direction so that the crank gas flows from a position where the second passage 22 is connected to the gas-oil separator 30.
The sensor assembly is used for generating a real-time signal and sending the real-time signal to the controller, and the controller determines whether the real-time rotating speed of the engine and the real-time load of the engine rotate the adjusting assembly according to the real-time signal, so that wind power is adjusted, and intelligent adjustment is achieved. In this example, the sensor assemblies include, but are not limited to, an oil temperature sensor for detecting an oil temperature, a cooling water temperature for detecting a cooling water temperature, a rotational speed sensor for detecting a real-time rotational speed of the engine, an intake pressure temperature sensor for detecting an intake pressure and an intake air temperature, and a post-oxygen sensor for detecting an oxygen concentration. The real-time signals include, but are not limited to, oil temperature, cooling water temperature, engine real-time speed, intake pressure and temperature, and oxygen concentration. Wherein the controller calculates according to the intake pressure and intake temperature signals of the intake pressure temperature sensor in the sensor assembly, the oxygen concentration of the rear oxygen sensor and the like to determine the real-time load of the engine.
Specifically, the pressure piece is installed in the oil pressure intracavity for the oil pressure chamber is one side open-ended cavity, and the shape of pressure piece and the formation phase-match in oil pressure chamber, and when machine oil got into the oil pressure intracavity from the opening, then promoted the pressure piece and removed, and the pressure piece is connected with adjusting part 43 again, and consequently, the pressure piece promotes adjusting part 43 and removes.
The controller adjusts the opening and closing of the engine oil pressure control valve 42 according to the real-time signal measured by the sensor assembly to adjust the oil volume of the oil pressure cavity, so that the pressure generated by the oil volume in the oil pressure cavity pushes the pressure piece to move along the oil pressure cavity, the adjusting assembly 43 rotates to a standard angle, the flow speed of the crank gas is adjusted as required, intelligent adjustment is achieved, and the oil-gas separation efficiency is improved. In this embodiment, when the oil amount in the oil pressure chamber increases, the standard angle of the adjusting assembly 43 increases, and the wind force generated increases; when the oil amount in the oil pressure chamber is reduced, the standard angle of the adjustment assembly 43 is reduced, and the wind power generated is reduced.
It can be understood that the controller can intelligently control the adjusting component 43 to rotate to a standard angle according to the real-time signal, on one hand, the speed of the flow of the crank gas to the oil-gas separator 30 can be increased according to the real-time signal, the separation efficiency of the crank gas is also improved, parts and engine oil in the engine are protected, and the problems that the crank gas stays in the crankcase 11 for a long time, the supply of the engine oil is damaged, and the parts in the engine are corroded are solved. For example, if the real-time signal indicates that the amount of the crank gas in the crankcase 11 is large, the standard angle of the adjustment unit 43 is increased according to the real-time signal, and the speed of the crank gas flowing to the gas-oil separator 30 can be increased compared to the case where the adjustment unit 43 is not increased, thereby improving the efficiency of the crank gas separation. On the other hand, the controller can also control the standard angle of the adjusting component 43 to be reduced according to the real-time signal, so that the adjusting component 43 with a smaller standard angle can generate smaller wind power, compared with the condition that the adjusting component 43 is not added, the flow of the crank gas to the oil-gas separator 30 can be accelerated, the flow of the crank gas can be adjusted as required, the energy is saved, and the service performance of the crankcase ventilation adjusting system is improved. It can be understood that the small standard angle adjusting assembly 43 generates a small wind force to flow the crank gas to the gas-oil separator 30 at a moderate speed. It should be noted that, when the real-time engine speed is high (for example, when the real-time engine speed is greater than 3000r/min), the standard angle of the adjusting assembly 43 is reduced according to the magnitude of the real-time engine load, so as to enhance the flow of the crank gas or not, on one hand, the power of the engine may be excessively consumed for reducing the crank regulator 40, and on the other hand, a proper amount of fresh air may be introduced to avoid introducing excessive fresh air, so that the pressure of the crankcase ventilation adjusting system is excessively high, which may cause oil leakage.
In one embodiment, as shown in fig. 5 and 6, the crankcase ventilation adjustment system further comprises an engine camshaft 50, the engine camshaft 50 having a mounting slot 51; the adjustment assembly 43 includes an impeller 431, a first side of the impeller 431 extending outward forming impeller teeth 432, the impeller teeth 432 being mounted in the mounting groove 51.
In this embodiment, the impeller 431 includes an impeller housing with an opening on one side, and the outer side of the first side surface opposite to the opening in the impeller housing extends outwards to form impeller teeth 432, and the impeller teeth 432 are installed on the installation groove 51 of the engine camshaft 50 to connect the impeller 431 and the engine camshaft 50, so that the adjustment assembly 43 is driven by the engine camshaft 50 to rotate along with the engine camshaft 50.
In one embodiment, as shown in fig. 4, 5 and 6, the adjustment assembly 43 further comprises a resilient pusher 433, a blade 434, a fixing lever 435 and a rotating lever 436; one end of the elastic pushing piece 433 is connected with the pressure piece, and the other end of the elastic pushing piece 433 is abutted with the first side surface; one end of the fixing rod 435 is fixedly arranged with the impeller 431, and the other end of the fixing rod 435 extends out of the impeller 431 and is connected with the blades 434; the impeller 431 is provided with a strip groove 437 along the axial direction, one end of the rotating rod 436 is connected with the elastic pushing member, and the other end of the rotating rod 436 extends out of the strip groove 437 to be connected with the blades 434.
In this embodiment, the other end of the elastic pushing member 433 abuts against the inner side of the first side surface.
Specifically, the oil passage 41 includes a drain passage 411 and a high-pressure oil passage 412, and the oil pressure control valve 42 is installed in the drain passage 411 and the high-pressure oil passage 412; when the controller controls the oil pressure control valve 42 to be opened according to a real-time signal detected by the sensor assembly, the engine oil enters the oil pressure cavity through the high-pressure oil channel 412, the oil amount of the oil pressure cavity is increased, so that the pressure piece moves towards the direction close to the impeller 431 along the oil pressure cavity, the elastic pushing piece 433 is compressed, the rotating rod 436 moves along the strip-shaped groove 437 to drive the blades 434 to rotate around the fixing rod 435, the standard angle of the blades 434 is increased, the speed of regulating the flow of the crank gas towards the oil-gas separator 30 is increased, the speed of accelerating the flow of the crank gas towards the oil-gas separator 30 is realized, the separation efficiency of the crank gas is improved, and parts and the engine. When the controller adjusts the oil pressure control valve 42 to be closed according to a real-time signal detected by the sensor assembly, the oil flows out of the oil pressure cavity through the oil drainage channel 411, the oil amount of the oil pressure cavity is reduced, so that the pressure piece moves towards the direction far away from the impeller 431 along the oil pressure cavity, the elastic pushing piece 433 resets, the rotating rod 436 moves along the strip-shaped groove 437 to drive the blades 434 to rotate around the fixing rod 435, the standard angle of the blades 434 is reduced, and compared with the case that the adjusting assembly 43 is not added, the speed of adjusting the flow of the crank gas towards the oil-gas separator 30 can be; or the vanes 434 are restored to the original state without deflection, so that the speed of the flow of the triton gas to the oil-gas separator 30 is adjusted as required, and the separation efficiency of the triton gas is improved, so as to protect the parts and the engine oil in the engine.
In one embodiment, as shown in FIGS. 1 and 4, the crankcase ventilation adjustment system further includes an air cleaner 60, an intake conduit 70, and the cylinder head 12; one end of the intake duct 70 is connected to the air cleaner 60, and the other end of the intake duct 70 is connected to an engine intake port of the cylinder head 12; the crank adjuster 40 includes an adjuster case 45, an air inlet 46 and an air outlet 47 provided on the adjuster case 45; the air inlet 46 is connected to the intake duct 70, and the air outlet 47 is connected to the crank gas passage 20.
Specifically, the air inlet 46 is connected to the intake duct 70, and fresh air flows from the air cleaner 60 to the intake duct 70 and further to the air inlet 46, thereby preventing the introduction of impurities; the air outlet 47 is connected to the crank gas passage 20 so that the wind generated by the regulating member 43 is blown out from the air outlet 47 to regulate the flow rate of the crank gas in the crank gas passage 20.
Wherein the engine cylinder 10 comprises a crankcase 11 and a cylinder head 12, and the cylinder head 12 comprises an engine inlet; one end of the intake duct 70 is connected to the air cleaner 60, and the other end of the intake duct 70 is connected to the engine intake passage to allow fresh air to enter the engine cylinder 10.
In one embodiment, as shown in FIG. 4, the bellcrank regulator 40 further includes an inlet check valve 44, the inlet check valve 44 being disposed on an air inlet 46.
The inlet check valve 44 is positioned on the air inlet 46 to ensure that fresh air can only flow from the air cleaner 60 to the air intake duct 70 and then into the crank regulator 40, but not to allow the crank gas to flow back through the crank regulator 40 into the air intake duct 70 behind the air cleaner 60 to ensure proper operation of the crankcase ventilation regulating system.
In one embodiment, as shown in FIG. 1, the crankcase ventilation adjustment system further includes a large load passage 80 and a small load passage 90; the oil-gas separator 30 includes a large-load gas outlet and a small-load gas outlet; one end of the heavy load channel 80 is connected with the heavy load air outlet, and the other end of the heavy load channel 80 is connected with the air inlet pipeline 70; one end of the small load passage 90 is connected to the small load outlet port, and the other end of the small load passage 90 is connected to the engine intake port 121.
Specifically, the crankcase ventilation adjustment system also includes a head cover 13 coupled to the cylinder head 12. The crankcase 11 is connected with an oil pan (not shown), the engine oil is separated from the crank gas through the gas-oil separator 30, and the engine oil flows from the oil outlet of the gas-oil separator 30 to the cylinder head cover 13, the cylinder head 12 and the crankcase 11, and then flows from the crankcase 11 to the oil pan, so that the engine oil is recycled. A large load passage 80 and a small load passage 90 are provided to ensure that the separated crank gas flows to the engine cylinder 10 for recycling.
Wherein the first passage 21 is provided in the crankcase 11 and the cylinder head 12, the second passage 22 is provided between the cylinder head 12 and the cylinder head cover 13, and an opening of the second passage 22 is connected to the gas-oil separator 30. A crank regulator 40 is provided on the second passage 22 for regulating the speed of the crank gas in the second passage 22 flowing to the oil separator 30.
In one embodiment, the crankcase ventilation adjustment system further includes a throttle valve 71, the throttle valve 71 being disposed between a location where the large load passage 80 connects to the intake conduit 70 and a location where the small load passage 90 connects to the engine intake 121.
As an example, a large-load check valve 81 is provided at the large-load air outlet, a small-load check valve 91 is provided at the small-load air outlet, and a supercharger (not shown) is provided on the intake duct 70, the supercharger being provided between the position where the large-load passage 80 is connected to the intake duct 70 and the throttle valve 71. When the supercharger is in a supercharging state, the throttle valve 71 is opened to a large degree, fresh air flowing from the air cleaner 60 to the throttle valve 71 is increased, a high air pressure exists in the small load passage 90, the small load check valve 91 cannot be opened, and at this time, the air pressure of the large load passage 80 is low relative to the air pressure of the oil-gas separator 30, so that the large load check valve 81 is opened to flow the separated crank gas to the large load passage 80, and further to the intake duct 70 and the cylinder head 12 to flow the separated crank gas to the engine cylinder 10. When the supercharger is not in the supercharging state, the opening degree of the throttle valve 71 is small, and the fresh air flowing from the air cleaner 60 to the throttle valve 71 decreases, at this time, the air pressure of the small load passage 90 is low relative to the air pressure of the oil separator 30, the small load check valve 91 opens, and the separated crank gas flows to the small load passage 90 and then enters the cylinder head 12, so that the separated crank gas flows to the engine cylinder 10.
The invention provides a control method of a crankcase ventilation regulating system, as shown in fig. 7, comprising the following steps:
s701: and acquiring a real-time signal sent by the sensor assembly, and determining the real-time rotating speed of the engine and the real-time load of the engine according to the real-time signal.
The real-time signal is a signal for indicating the operating condition of the device in which the sensor assembly is installed, and includes, but is not limited to, an oil temperature, a cooling water temperature, an engine real-time rotation speed, an intake air pressure, an intake air temperature, an oxygen concentration, and the like.
Specifically, after the controller receives the real-time signal, the controller calculates according to the real-time signal to determine the real-time rotating speed of the engine and the real-time load of the engine, so as to control the opening and closing of the oil pressure control valve 42, so as to adjust the oil amount of the oil pressure cavity, so that the pressure member moves along the oil pressure cavity to adjust the standard angle of the adjusting assembly 43, thereby adjusting the flow speed of the crank gas as required, realizing intelligent adjustment, improving the oil-gas separation efficiency, and achieving the purpose of protecting parts and engine oil in the engine.
S702: and acquiring a standard angle of the adjusting assembly according to the real-time rotating speed and the real-time load of the engine, and generating an oil quantity control signal based on the standard angle.
Wherein the standard angle is the standard angle expected by the adjustment assembly 43 corresponding to different engine real-time speeds and engine real-time loads. The oil amount control signal is a signal for controlling the opening and closing of the oil pressure control valve 42. In this embodiment, the standard angle of the adjusting component 43 is determined in advance according to the real-time engine speed and the real-time engine load, and then the oil amount control signal corresponding to the standard angle is obtained, so as to provide technical support for subsequently adjusting the flow speed of the triton gas according to actual needs.
S703: the opening and closing of the oil pressure control valve is controlled based on the oil quantity control signal, the oil quantity of the oil pressure cavity is adjusted, the pressure piece moves along the oil pressure cavity, the adjusting assembly is rotated to a standard angle, and the speed of the crank gas flowing to the oil-gas separator is adjusted.
In this embodiment, the controller controls the opening and closing of the oil pressure control valve 42 according to the oil amount control signal to adjust the oil amount in the oil pressure chamber, and controls the oil amount in the oil pressure chamber to move the pressure member along the oil pressure chamber, so as to rotate the adjusting assembly to the standard angle, thereby achieving the purpose of controlling the standard angle of the adjusting assembly 43 and adjusting the flow speed of the flexible gas according to actual requirements.
According to the control method of the crankcase ventilation adjusting system, the standard angle of the adjusting component 43 matched with the real-time rotating speed and the real-time load of the engine is obtained, the oil quantity control signal is obtained based on the standard angle, and technical support is provided for subsequently adjusting the flow speed of the crank gas according to actual needs. The oil pressure control valve 42 is controlled to open and close the oil pressure cavity based on the oil quantity control signal, so that the pressure piece moves along the oil pressure cavity, the adjusting component is rotated to a standard angle, the speed of the crank gas flowing to the oil-gas separator 30 is adjusted, the oil quantity in the oil pressure cavity is adjusted, the purpose of controlling the standard angle of the adjusting component 43 is achieved, and the crank gas flowing speed is adjusted according to actual requirements.
In one embodiment, as shown in FIG. 8, the real-time signals include oil temperature, cooling water temperature, engine real-time speed, intake pressure and intake temperature, and oxygen concentration; step S701, namely acquiring a real-time signal sent by a sensor assembly, and determining the real-time rotating speed and the real-time load of the engine according to the real-time signal, wherein the step S comprises the following steps:
s801: and receiving the oil temperature and the cooling water temperature sent by the sensor assembly.
In the present embodiment, the sensor assembly includes an oil temperature sensor for detecting an oil temperature and a cooling water temperature sensor for a cooling water temperature to detect the oil temperature and the cooling water temperature of the engine. The engine oil temperature and the cooling water temperature sent by the sensor assembly are received, whether the engine is in a cold start working condition and a warm working condition is judged according to the engine oil temperature and the cooling water temperature, whether the regulating assembly 43 needs to be started to regulate the flowing speed of the crank gas is determined according to the judgment result, and intelligent control is achieved.
S802: and judging whether the current working condition of the engine is in a cold start working condition or a warm working condition according to the temperature of the engine oil and the temperature of the cooling water.
The cold start working condition is a working condition that the engine starts to start under the condition that the internal temperature of the engine is consistent with the ambient temperature after the engine has been shut down for a period of time.
The warm-up working condition is the working condition that the rotating speed of the engine keeps rotating after the engine is started under the condition of cold vehicle, and the rotating speed returns to the preset rotating speed after the working temperature of the engine is normal. The preset rotating speed refers to the rotating speed of the preset engine.
S803: and if the current working condition is not in a cold start working condition or a warm working condition, acquiring the real-time rotating speed of the engine and determining the real-time load of the engine according to the air inlet pressure, the air inlet temperature and the oxygen concentration.
In this embodiment, when the engine is not in the cold start condition and the warm-up condition, the real-time rotational speed of the engine is obtained, and the real-time load of the engine is determined according to the intake pressure, the intake temperature and the oxygen concentration, so that the standard angle of the adjusting component 43 is obtained according to the real-time rotational speed of the engine and the real-time load of the engine, and the flow speed of the crank gas is adjusted as required. When the engine is in a cold start working condition and a warm working condition, the adjusting component 43 does not rotate, so that energy is saved, and power loss of the engine is avoided.
The control method of the crankcase ventilation regulating system provided by the embodiment receives the temperature of the engine oil and the temperature of the cooling water sent by the sensor assembly, and realizes intelligent regulation. And judging whether the current working condition of the engine is in a cold start working condition or a warm working condition according to the temperature of the engine oil and the temperature of the cooling water, and when the engine is not in the cold start working condition or the warm working condition, acquiring the real-time rotating speed of the engine, determining the real-time load of the engine according to the air inlet pressure, the air inlet temperature and the oxygen concentration, and adjusting the flow speed of the crank gas as required.
In one embodiment, step S702, obtaining a standard angle of the adjusting component according to the real-time engine speed and the real-time engine load, and generating the fuel control signal based on the standard angle, includes the following steps:
and inquiring a standard angle table according to the real-time rotating speed and the real-time load of the engine, acquiring the standard angle of the blade corresponding to the real-time rotating speed and the real-time load of the engine, and acquiring an oil quantity control signal based on the standard angle.
The standard angle table divides the rotation speed and the load of the engine to be divided into different rotation speed standard ranges and load standard ranges, and the standard angle table further comprises standard angles of the adjusting assembly 43 matched with the rotation speed standard ranges and the load standard ranges. The standard angle table in this example includes 3 standard angles, and it is understood that the standard angle table can be adjusted according to actual conditions. The rotation speed standard range refers to a previously divided engine rotation speed range. As shown in the table below, the standard ranges of the rotating speed can be not more than 1250r/min, 1250-2000 r/min and the like. The load rotation speed range is divided in advance by the load standard range, and for example, the load standard range may be 25%, 25% to 50%, or the like.
Table-standard angle table
The reference angle refers to a reference angle of the adjustment assembly 43 in the reference angle table that matches the rotation speed reference range and the load reference range. For example, the standard range of the rotating speed is 1250-2000 r/min, the standard range of the load is not less than 75%, and the standard angle of the matched adjusting component 43 is angle 2.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A crankcase ventilation regulating system comprises a crankcase, a crank gas channel and an oil-gas separator; one end of the crank gas channel is connected with the crankcase, and the other end of the crank gas channel is connected with the oil-gas separator; the device is characterized by also comprising a sensor assembly, a controller and a crank regulator; the triton regulator is communicated with the triton gas channel; the crank regulator is provided with an oil duct, an engine oil pressure control valve, an oil pressure cavity, a pressure piece and a regulating assembly; the oil pressure cavity is communicated with the oil duct, the pressure piece is assembled in the oil pressure cavity and connected with the adjusting assembly, and the engine oil pressure control valve is installed in the oil duct; the controller controls the opening and closing of the engine oil pressure control valve according to a real-time signal measured by the sensor assembly, adjusts the oil quantity of the oil pressure cavity, enables the pressure piece to move along the oil pressure cavity, enables the adjusting assembly to rotate to a standard angle, and adjusts the speed of the crank gas flowing to the oil-gas separator.
2. The crankcase ventilation adjustment system of claim 1, further comprising an engine camshaft having a mounting slot formed therein; the adjusting component comprises an impeller, wherein a first side surface of the impeller extends outwards to form impeller teeth, and the impeller teeth are installed in the installation grooves.
3. The crankcase ventilation adjustment system of claim 2, wherein the adjustment assembly further comprises a resilient pusher member, a blade, a retaining rod, and a rotating rod; one end of the elastic pushing piece is connected with the pressure piece, and the other end of the elastic pushing piece is abutted against the first side face; one end of the fixed rod is fixedly arranged with the impeller, and the other end of the fixed rod extends out of the impeller and is connected with the blades; the impeller is provided with a strip-shaped groove along the axial direction, one end of the rotating rod is connected with the elastic pushing piece, and the other end of the rotating rod extends out of the strip-shaped groove to be connected with the blades.
4. The crankcase ventilation adjustment system of claim 1, further comprising an air cleaner, an intake conduit, and a cylinder head; one end of the air inlet pipeline is connected with the air filter, and the other end of the air inlet pipeline is connected with an engine air inlet channel of the cylinder cover; the crank adjuster comprises an adjuster shell, an air inlet and an air outlet which are arranged on the adjuster shell; the air inlet is connected with the air inlet pipeline, and the air outlet is connected with the curved gas channel.
5. The crankcase ventilation adjustment system of claim 4, wherein the crank adjuster further comprises an inlet check valve disposed on the air inlet.
6. The crankcase ventilation adjustment system of any of claims 1-5, further comprising a large load passage and a small load passage; the oil-gas separator comprises a large-load gas outlet and a small-load gas outlet; one end of the heavy load channel is connected with the heavy load air outlet, and the other end of the heavy load channel is connected with the air inlet pipeline; one end of the small load channel is connected with the small load air outlet, and the other end of the small load channel is connected with an engine air inlet channel.
7. The crankcase ventilation adjustment system of claim 6, further comprising a throttle valve disposed between a location where the large load passage connects to the intake conduit and a location where the small load passage connects to the engine intake.
8. A control method of a crankcase ventilation regulating system is characterized by comprising the following steps:
acquiring a real-time signal sent by a sensor assembly, and determining the real-time rotating speed and the real-time load of an engine according to the real-time signal;
acquiring a standard angle of an adjusting component according to the real-time rotating speed and the real-time load of the engine, and generating an oil quantity control signal based on the standard angle;
based on the oil mass control signal control machine oil pressure control valve switching, adjust the oil mass in oil pressure chamber, make pressure piece move along oil pressure chamber to rotate adjusting part to the standard angle, adjust the speed that the gas flow direction of cranking gas oil and gas separator.
9. The control method of a crankcase ventilation adjustment system as claimed in claim 8, wherein said real-time signals include oil temperature, cooling water temperature, engine real-time speed, intake pressure and intake temperature and oxygen concentration;
the real-time signal that the sensor subassembly sent is obtained, engine real-time rotational speed and the real-time load of engine of confirming the engine according to the real-time signal includes:
receiving the engine oil temperature and the cooling water temperature sent by the sensor assembly;
judging whether the current working condition of the engine is in a cold start working condition or a warm working condition according to the engine oil temperature and the cooling water temperature;
and if the current working condition is not in a cold start working condition or a warm working condition, acquiring the real-time rotating speed of the engine and determining the real-time load of the engine according to the air inlet pressure, the air inlet temperature and the oxygen concentration.
10. The control method of the crankcase ventilation adjustment system according to claim 8, wherein the obtaining a standard angle of an adjustment assembly according to the real-time engine speed and the real-time engine load, and generating the oil control signal based on the standard angle comprises:
and inquiring a standard angle table according to the real-time rotating speed and the real-time load of the engine, acquiring a standard angle of the blade corresponding to the real-time rotating speed and the real-time load of the engine, and acquiring an oil quantity control signal based on the standard angle.
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| CN116291800A (en) * | 2023-03-21 | 2023-06-23 | 重庆长安汽车股份有限公司 | Engine crankcase ventilation system, engine oil water content adjusting method and vehicle |
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