CN114645748B - Anti-icing device and anti-icing method - Google Patents
Anti-icing device and anti-icing method Download PDFInfo
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- CN114645748B CN114645748B CN202110413245.7A CN202110413245A CN114645748B CN 114645748 B CN114645748 B CN 114645748B CN 202110413245 A CN202110413245 A CN 202110413245A CN 114645748 B CN114645748 B CN 114645748B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009423 ventilation Methods 0.000 claims description 123
- 238000007789 sealing Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000009825 accumulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
-
- 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
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- 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
-
- 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
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
-
- 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
- F02M35/10373—Sensors for intake systems
- F02M35/1038—Sensors for intake systems for temperature or pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides an anti-icing device and an anti-icing method, and relates to the technical field of automobiles.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an anti-icing device and an anti-icing method.
Background
When the vehicle went in the higher environment of the difference in temperature, at crankcase ventilation pipe and engine intake pipe mouth intersection, thereby because cold and hot air gathers in order to produce the phenomenon of icing, probably lead to the crankcase ventilation pipe and air cleaner outlet duct joint department to freeze stifled, arouse crankcase pressure to increase, serious person causes the oil blanket to drop and leads to the oil leak, or makes engine oil emulsification scheduling problem, leads to the unable normal driving of vehicle.
Disclosure of Invention
In view of the above, the present invention is directed to an anti-icing device and an anti-icing method, so as to solve the problem that a joint between a crankcase ventilation pipe and an air outlet pipe of an air cleaner of a vehicle is easy to freeze and block, and the vehicle cannot normally run.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an anti-icing device comprises a first temperature sensor arranged on a crankcase ventilation pipe, a second temperature sensor arranged on an air outlet pipe of an air filter, and a vibration component arranged on the crankcase ventilation pipe at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter;
the first temperature sensor is used for measuring a first gas temperature value in the crankcase ventilation pipe;
the second temperature sensor is used for measuring a second gas temperature value in the air outlet pipe of the air filter;
the vibration component is used for vibrating the crankcase ventilation pipe under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is larger than a preset temperature threshold value.
Optionally, the vibration assembly comprises a sleeve, a driving motor and a transmission piece, one end of the sleeve is fixed on the air outlet pipe of the air cleaner, the driving motor is arranged on the sleeve, the transmission piece is connected between the driving motor and the crankcase ventilation pipe, and the crankcase ventilation pipe is movably inserted into the other end of the sleeve;
and the driving motor is used for vibrating the crankcase ventilation pipe through the transmission piece under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
The vibration component is further used for stopping vibration of the crankcase ventilation pipe under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is smaller than or equal to a preset temperature threshold value.
Optionally, the vibration assembly further comprises a sealing structure.
The sealing structure is used for sealing the crankcase ventilation pipe and the sleeve.
Optionally, the sleeve is specifically configured to secure the crankcase ventilation duct by at least one pin.
Optionally, the preset temperature threshold is 30-40 ℃.
Optionally, the vibration component is specifically configured to vibrate the crankcase ventilation pipe at a frequency of 100 to 120 times per minute when a temperature comparison value between the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
Optionally, the crankcase ventilation tube comprises a first tube in contact with the vibration assembly and a second tube not in contact with the vibration assembly;
optionally, the first pipe is a hard pipe, and at least a part of the second pipe is a hose.
Compared with the related art, the anti-icing device has the following advantages:
the invention provides an anti-icing device, which comprises a first temperature sensor for measuring a first gas temperature value in a crankcase ventilation pipe, a second temperature sensor for measuring a second gas temperature value in an air outlet pipe of an air filter, and a vibration component for vibrating the crankcase ventilation pipe under the condition that a temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
The invention also aims to provide an anti-icing method to solve the problem that the joint of a crankcase ventilation pipe and an air outlet pipe of an air filter of a vehicle is easy to freeze and block, so that the vehicle cannot normally run.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of anti-icing, the method comprising:
acquiring a first gas temperature value in a crankcase ventilation pipe through a first temperature sensor arranged in the crankcase ventilation pipe;
acquiring a second gas temperature value in an air outlet pipe of the air filter through a second temperature sensor arranged on the air outlet pipe of the air filter;
determining a temperature comparison value according to the first gas temperature value and the second gas temperature value; the temperature comparison value represents a difference between the first gas temperature value and the second gas temperature value;
and under the condition that the temperature comparison value is greater than a preset temperature threshold value, vibrating the crankcase ventilation pipe through a vibration component arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter.
Optionally, the determining a temperature comparison value according to the first gas temperature value and the second gas temperature value includes:
under the condition that the first gas temperature value and the second gas temperature value are the same in positive and negative, the absolute value of the first gas temperature value and the absolute value of the second gas temperature value are differed to obtain a temperature comparison value;
and under the condition that the first gas temperature value and the second gas temperature value are different in positive and negative, summing the absolute value of the first gas temperature value and the absolute value of the second gas temperature value to obtain a temperature comparison value.
Optionally, after vibrating the crankcase ventilation pipe through a vibration component disposed at an interface between the crankcase ventilation pipe and the air cleaner air outlet pipe when the temperature comparison value is greater than a preset temperature threshold value, the method further includes:
and stopping vibrating the crankcase ventilation pipe through the vibration assembly under the condition that the temperature comparison value is smaller than or equal to a preset temperature threshold value.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the operational principle of a crankcase ventilation duct provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anti-icing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vibration assembly according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a vibration assembly according to an embodiment of the present invention;
FIG. 5 is a flow chart illustrating steps of a method for preventing icing provided by an embodiment of the present invention;
fig. 6 is a schematic control diagram of an anti-icing method according to an embodiment of the present invention.
Reference numerals are as follows:
a crankcase ventilation duct-11; an air outlet pipe-12 of the air filter; an air filter-13; turbocharger-14; interface-15; a first temperature sensor-21; a second temperature sensor-22; -a vibrating assembly-23; a sleeve-231; a drive motor 232; a transmission member-233; a sealing structure 234; a pin-2311; eccentric-2331; link-2332;
ECU-43。
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic view of a working principle of a crankcase ventilation pipe provided by an embodiment of the present invention, as shown in fig. 1, wherein the crankcase ventilation pipe 11 is used for guiding hot gas leaking into a combustion chamber of a crankcase from a gap between a piston group and a cylinder, so as to avoid blow-by, and the air cleaner air outlet pipe 12 is used for sending ambient cold air filtered by an air cleaner 13 into a turbocharger 14, so that the turbocharger 14 compresses and pressurizes the cold air into a cylinder of an engine. Therefore, at the junction of the crankcase ventilation duct 11 and the interface 15 of the air cleaner outlet duct 12, icing or even blockage due to cold and hot air accumulation is likely to occur.
Fig. 2 is a schematic structural diagram of an anti-icing device provided by an embodiment of the present invention, and as shown in fig. 2, the anti-icing device may include a first temperature sensor 21 disposed on a crankcase ventilation pipe, a second temperature sensor 22 disposed on an air cleaner outlet pipe, and a vibration assembly 23 disposed at an interface of the crankcase ventilation pipe and the air cleaner outlet pipe.
The first temperature sensor 21 is used for measuring a first gas temperature value in the crankcase ventilation pipe;
the second temperature sensor 22 is used for measuring a second gas temperature value in the air outlet pipe of the air filter;
the vibration component 23 is configured to vibrate the crankcase ventilation pipe when a temperature comparison value between the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value; the temperature comparison value represents a difference between the first gas temperature value and the second gas temperature value.
In the embodiment of the present invention, as shown in fig. 2, a first temperature sensor 21 is disposed at a crankcase ventilation pipe, a second temperature sensor 22 is disposed on an air outlet pipe of an air cleaner, and a temperature value of gas in the crankcase ventilation pipe and the air outlet pipe of the air cleaner can be measured by the first temperature sensor 21 and the second temperature sensor 22, optionally, a temperature value of a pipe wall can be measured by the first temperature sensor 21 and the second temperature sensor 22 as a gas temperature value, and a temperature value of gas in the pipe can also be measured, and real-time readings of the first temperature sensor 21 and the second temperature sensor 22 can be monitored by an ECU (Electronic Control Unit), and readings of a preset period can also be monitored, which is not particularly limited in the embodiment of the present invention. In addition, because the combustion chamber gas is led out from the crankcase ventilation pipe, the environment gas is led in from the air outlet pipe of the air filter, generally, the temperature value of the second gas is lower than that of the first gas, and the reading accuracy can be verified by a person skilled in the art according to the size relation between the temperature values of the first gas and the second gas.
In the embodiment of the present invention, the temperature comparison value may represent a difference between the first gas temperature value and the second gas temperature value, and since the accumulation of cold and hot air may cause an increase in the temperature comparison value between the first gas temperature value in the crankcase ventilation pipe and the second gas temperature value in the air outlet pipe of the air cleaner, and the accumulation of cold and hot air further causes an icing risk, the risk of icing at the intersection of the crankcase ventilation pipe and the air outlet pipe interface of the air cleaner may be evaluated by the temperature comparison value between the first gas temperature value and the second gas temperature value, at this time, a preset temperature threshold may be preset to evaluate whether the temperature comparison value constitutes the icing risk, optionally, the preset temperature threshold may be obtained by measuring a temperature comparison value with a large icing risk in a field test of different vehicle types, or may be obtained by measuring a temperature comparison value with a large icing risk in a test of a simulated driving environment, which is not specifically limited in the embodiment of the present invention.
In the embodiment of the invention, the vibration component 23 can be arranged at the interface between the crankcase ventilation pipe and the air outlet pipe of the air filter, under the condition that the temperature comparison value is greater than the preset temperature threshold value, the interface between the crankcase ventilation pipe and the air outlet pipe of the air filter is considered to be easy to freeze, at the moment, the vibration component 23 can vibrate the crankcase ventilation pipe to drive air and water vapor to vibrate, so that the risk of freezing is avoided and reduced, or formed ice is shattered under the condition of freezing, so that the formed ice flows out, melts and the like, and the accumulation and blockage are avoided.
Optionally, the vibration assembly 23 is further configured to stop vibrating the crankcase ventilation pipe when a temperature comparison value between the first gas temperature value and the second gas temperature value is smaller than or equal to a preset temperature threshold value.
In the embodiment of the invention, when the temperature comparison value of the first gas temperature value and the second gas temperature value is less than or equal to the preset temperature threshold value, the interface between the crankcase ventilation pipe and the air outlet pipe of the air filter is not easy to freeze, and at the moment, the vibration of the vibration component 23 on the crankcase ventilation pipe can be stopped, so that extra energy consumption is avoided when the risk of freezing is low, and the possible noise caused by the vibration component in the vibration process and other possible influences on the crankcase ventilation pipe and the air outlet pipe of the air filter are also reduced. Alternatively, the vibration of the crankcase ventilation pipe may also be stopped under other conditions, for example, the vibration is stopped after the vibration of the crankcase ventilation pipe reaches a preset time period, or the vibration is stopped after the vibration of the crankcase ventilation pipe reaches a preset number of times, so as to avoid the problem that the vibration is not stopped after the temperature comparison value is smaller than or equal to the temperature threshold value due to possible delay in measurement and calculation of the temperature value, which is not particularly limited in the embodiment of the present invention.
Optionally, the crankcase ventilation tube comprises a first tube of a contact part with the vibration assembly 23, and a second tube of a non-contact part;
optionally, the first pipe is a hard pipe, and at least a part of the second pipe is a hose.
In the embodiment of the invention, the crankcase ventilation pipe can be divided into a first pipe body of a part in contact with the vibration assembly 23 and a second pipe body of a part not in contact with the vibration assembly, wherein the contact part can be a part covered by the vibration assembly on the crankcase ventilation pipe or a part attached to the vibration assembly; the second pipe body is a portion of the crankcase ventilation pipe not in contact with the vibration assembly 23, and therefore, the second pipe body may be at least partially a hose, and the portion of the vibration assembly 23 not in contact is damped and vibrated by the hose, so that the vibration effect at the interface is ensured and the problems of damage, leakage and the like of the whole crankcase ventilation pipe due to vibration are avoided.
Optionally, the preset temperature threshold is 30-40 ℃.
In the embodiment of the present invention, the preset temperature threshold may be any temperature between 30 ℃ and 40 ℃, for example, 30 ℃, 31 ℃, 32 ℃, 33 ℃, 35 ℃, 40 ℃, and the like, and a person skilled in the art may select different preset temperature thresholds according to actual situations, which is not specifically limited in the embodiment of the present invention.
Optionally, the vibration assembly 23 is specifically configured to vibrate the crankcase ventilation pipe at a frequency of 100 times per minute to 120 times per minute when a temperature comparison value between the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
In the embodiment of the present invention, the frequency of the vibrating component vibrating the crankcase ventilation pipe may be controlled, and a suitable specific frequency range is obtained through a test, so that the energy consumption is reduced and the efficiency is improved while icing or shattering icing is avoided.
Fig. 3 is a schematic structural diagram of a vibration assembly according to an embodiment of the present invention, taking the vibration assembly 23 shown in fig. 2 as an example, as shown in fig. 3, the vibration assembly 23 includes a sleeve 231, a driving motor 232, and a transmission member 233, one end of the sleeve 231 is fixed on the air outlet pipe of the air cleaner, the driving motor 232 is disposed on the sleeve 231, the transmission member 233 is connected between the driving motor 232 and the crankcase ventilation pipe, and the crankcase ventilation pipe is movably inserted into the other end of the sleeve 231;
the driving motor 232 is configured to vibrate the crankcase ventilation pipe through the transmission member 233 when a temperature comparison value between the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
In the embodiment of the present invention, the vibration assembly 23 includes a sleeve 231, one end of the sleeve 231 may be fixed to the air cleaner outlet pipe, and the crankcase ventilation pipe may be movably inserted into the other end of the sleeve 231 to fix the crankcase ventilation pipe to the air cleaner outlet pipe, so as to avoid falling off, water leakage, air leakage and the like when the vibration assembly 23 vibrates the crankcase ventilation pipe, at this time, a portion inserted into the sleeve 231 in the crankcase ventilation pipe may be used as a first pipe body, and a portion exposed to the outside may be used as a second pipe body.
In an embodiment of the present invention, the vibration assembly 23 includes a driving motor 232, a transmission member 233, the transmission member 233 is driven by the driving motor 232 to vibrate the crankcase ventilation duct, the driving motor 232 is disposed on the sleeve 231, the transmission member 233 is connected between the driving motor 232 and the crankcase ventilation duct, optionally, the transmission member 233 has a mechanical structure that generates vibration to vibrate the crankcase ventilation duct under the driving of the driving motor 232, for example, the transmission member 233 may include an eccentric 2331 and a connecting rod 2332, the eccentric 2331 may be disposed on the driving motor 232, the connecting rod 2332 may be connected to the eccentric 2331 and the crankcase ventilation duct, the driving motor 232 may drive the eccentric 2331 to rotate, so as to vibrate the crankcase ventilation duct through the connecting rod 2332 connected between the eccentric 2331 and the crankcase ventilation duct, thereby avoiding air accumulation, and the vibration frequency of the crankcase ventilation duct is related to the rotation speed of the driving eccentric 2332, therefore, the crankcase ventilation duct may be controlled to vibrate at a certain frequency by controlling the rotation speed of the eccentric 2334, optionally, the driving motor 232 may be controlled by the transmission member 233 may also select other mechanical structures that can generate vibration according to requirements, such as an eccentric block and a connecting rod, and the like, which is not particularly limited in this embodiment of the present invention.
Fig. 4 is a schematic cross-sectional structural view of a vibration assembly according to an embodiment of the present invention, and taking the vibration assembly 23 shown in fig. 2 as an example, as shown in fig. 4, the vibration assembly 23 further includes a sealing structure 234;
optionally, the sleeve 231 is specifically configured to secure the crankcase ventilation duct by at least one pin 2311.
In the embodiment of the invention, the crankcase ventilation pipe can be fixed through the pin 2311, the pin is a standardized fastener and can be used for static fixed connection, and the crankcase ventilation pipe and the sleeve 231 are connected through at least one pin 2311, so that static fixation of the crankcase ventilation pipe is realized, and the method is simple and convenient. Alternatively, the pins may be one, two, three, etc. Other methods of fixedly inserting the crankcase ventilation tube into the sleeve 231, such as welding, may also be adopted by those skilled in the art, and the embodiment of the present invention is not limited thereto.
The sealing structure 234 is used for sealing the crankcase ventilation tube and the sleeve 231.
In the embodiment of the present invention, the sealing structure 234 may be used to seal the crankcase ventilation pipe and the sleeve 231, so as to enhance the sealing performance of the assembly, and further avoid the problems of water leakage and air leakage, optionally, the sealing structure 234 may be implemented by sealing rings of different types, and a person skilled in the art may select different sealing rings according to the type, specification, and material, which is not specifically limited in the embodiment of the present invention.
The invention provides an anti-icing device, which comprises a first temperature sensor for measuring a first gas temperature value in a crankcase ventilation pipe, a second temperature sensor for measuring a second gas temperature value in an air outlet pipe of an air filter, and a vibration component for vibrating the crankcase ventilation pipe under the condition that a temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
Fig. 5 is a flowchart of steps of an anti-icing method according to an embodiment of the present invention, and as shown in fig. 5, the anti-icing method may be implemented based on the anti-icing apparatus shown in any one of fig. 2 to 4, where the method may include:
and 31, acquiring a first gas temperature value in a crankcase ventilation pipe through a first temperature sensor arranged in the crankcase ventilation pipe.
In an embodiment of the present invention, the first temperature sensor may be disposed at any position of the crankcase ventilation pipe, so that the first temperature sensor may measure a first gas temperature value in the crankcase ventilation pipe, and optionally, the ECU may receive the first gas temperature value measured by the first temperature sensor, or another data processing center may receive the first gas temperature value measured by the first temperature sensor, which is not limited in this embodiment of the present invention.
And 32, acquiring a second gas temperature value in the air outlet pipe of the air filter through a second temperature sensor arranged in the air outlet pipe of the air filter.
In the embodiment of the present invention, the second temperature sensor may be disposed at any position of the air outlet pipe of the air cleaner, so that the second temperature sensor may measure a second gas temperature value in the air outlet pipe of the air cleaner, optionally, the ECU may be used to receive the second gas temperature value measured by the second temperature sensor, or another data processing center may be used to receive the second gas temperature value measured by the second temperature sensor, which is not limited in this respect in the embodiment of the present invention.
In the embodiment of the present invention, the temperature comparison value between the first gas temperature value and the second gas temperature value may be obtained by subtracting the second gas temperature value from the first gas temperature value, or may be obtained by subtracting the first gas temperature value from the second gas temperature value.
And step 34, under the condition that the temperature comparison value is larger than a preset temperature threshold value, vibrating the crankcase ventilation pipe through a vibration component arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air cleaner.
In the embodiment of the invention, under the condition that the temperature comparison value is greater than the preset temperature threshold value, the risk of icing at the intersection of the crankcase ventilation pipe and the air outlet pipe interface of the air filter is considered to be greater, and at the moment, the vibration assembly arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter can be started, so that the crankcase ventilation pipe is vibrated, cold and hot air accumulation is avoided, and the icing risk is reduced.
Optionally, the step 33 includes:
step S11, under the condition that the first gas temperature value and the second gas temperature value are the same in positive and negative, the absolute value of the first gas temperature value and the absolute value of the second gas temperature value are differed to obtain a temperature comparison value.
And S12, under the condition that the first gas temperature value and the second gas temperature value are different in positive and negative, summing the absolute value of the first gas temperature value and the absolute value of the second gas temperature value to obtain a temperature comparison value.
In the embodiment of the invention, under the condition that the preset temperature threshold is a positive temperature value, the mode of obtaining the temperature comparison value can be determined according to the positive-negative relation between the first gas temperature value and the second gas temperature value, so that the temperature comparison value can represent the difference between the first gas temperature value and the second gas temperature value. Optionally, under the condition that the first gas temperature value and the second gas temperature value have the same positive and negative values, a temperature comparison value can be obtained by making a difference between the absolute value of the first gas temperature value and the absolute value of the second gas temperature value; in the case where the first gas temperature value and the second gas temperature value differ in positive and negative, the temperature comparison value may be obtained by summing the absolute value of the first gas temperature value and the absolute value of the second gas temperature value.
Optionally, after the step 34, the method further includes:
and S21, stopping vibrating the crankcase ventilation pipe through the vibrating component under the condition that the temperature comparison value is smaller than or equal to a preset temperature threshold value.
In the embodiment of the invention, under the condition that the temperature comparison value is less than or equal to the preset temperature threshold value, the risk of icing at the junction of the crankcase ventilation pipe and the air outlet pipe interface of the air filter is considered to be low, and at the moment, the vibration of the crankcase ventilation pipe through the vibration assembly can be stopped, so that the additional energy consumption is avoided. Optionally, after the ECU is used to obtain the first gas temperature value and the second gas temperature value, a signal may be transmitted to the ECU according to the temperature comparison value, where the signal is 1 when the temperature comparison value is greater than the preset temperature threshold value, the vibration module vibrates the crankcase ventilation pipe, and the signal is 0 when the temperature comparison value is less than or equal to the preset temperature threshold value, and stops vibrating the crankcase ventilation pipe.
The invention provides an anti-icing method, which comprises the steps of measuring a first gas temperature value by a first temperature sensor arranged on a crankcase ventilation pipe, measuring a second gas temperature value by a second temperature sensor arranged on an air outlet pipe of an air filter, obtaining a temperature comparison value according to the first gas temperature value and the second gas temperature value, vibrating a vibrating component arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value, indicating that hot gas in the crankcase ventilation pipe and cold gas in the air outlet pipe of the air filter are larger and further having higher probability of icing caused by cold and hot air accumulation under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is greater than the preset temperature threshold value, and arranging the vibrating component at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter.
Fig. 6 is a schematic diagram illustrating the control principle of an anti-icing method according to an embodiment of the present invention, and as shown in fig. 6, the crankcase ventilation duct 11, the first temperature sensor 21, the vibration assembly 23, the air cleaner outlet duct 12, the second temperature sensor 22, and the ECU43 are shown, wherein arrows indicate the air flowing direction. As shown in fig. 6, the control principle of the anti-icing method provided by the embodiment of the invention is as follows;
the ECU43 acquires a first gas temperature value T1 in the crankcase ventilation duct 11 from the first temperature sensor 21;
the ECU43 acquires a second gas temperature value T2 in the air outlet pipe 12 of the air filter from the second temperature sensor 22;
the ECU43 obtains a temperature comparison value T0 according to the first gas temperature value T1 and the second gas temperature value T2;
under the condition that the temperature comparison value T0 is less than or equal to the preset temperature threshold value of 35 ℃, the output signal is 0, and the ECU43 continues to monitor the temperature comparison value T0;
under the condition that the temperature comparison value T0 is larger than the preset temperature threshold value of 35 ℃, the output signal is 1, ECU43 starts the vibration assembly 23 to vibrate the crankcase ventilation pipe 11 at the interface of the crankcase ventilation pipe 11 and the air filter air outlet pipe 12.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An anti-icing device is characterized by comprising a first temperature sensor arranged on a crankcase ventilation pipe, a second temperature sensor arranged on an air outlet pipe of an air filter, and a vibration component arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter;
the first temperature sensor is used for measuring a first gas temperature value in the crankcase ventilation pipe;
the second temperature sensor is used for measuring a second gas temperature value in the air outlet pipe of the air filter;
the vibration component is used for vibrating the crankcase ventilation pipe under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is larger than a preset temperature threshold value; the temperature comparison value represents a difference between the first gas temperature value and the second gas temperature value;
the vibration assembly comprises a sleeve and a sealing structure, one end of the sleeve is fixed on the air outlet pipe of the air filter, the crankcase ventilation pipe is movably inserted into the other end of the sleeve, and the sealing structure is used for sealing the crankcase ventilation pipe and the sleeve.
2. The apparatus of claim 1, wherein the vibratory assembly further comprises a drive motor disposed on the sleeve, a transmission connected between the drive motor and the crankcase ventilation tube;
and the driving motor is used for vibrating the crankcase ventilation pipe through the transmission piece under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
3. The apparatus of claim 1, wherein the vibration assembly is further configured to stop vibrating the crankcase ventilation duct if the temperature comparison of the first gas temperature value and the second gas temperature value is less than or equal to a predetermined temperature threshold.
4. The apparatus of claim 2,
the sleeve is specifically configured to secure the crankcase ventilation tube via at least one pin.
5. The device according to claim 1, wherein the preset temperature threshold is 30-40 ℃;
the vibration component is specifically used for vibrating the crankcase ventilation pipe at a frequency of 100-120 times per minute under the condition that the temperature comparison value of the first gas temperature value and the second gas temperature value is greater than a preset temperature threshold value.
6. The apparatus of claim 1, wherein the crankcase ventilation duct comprises a first tube in contact with the vibration assembly and a second tube not in contact with the vibration assembly;
the first pipe body is a hard pipe, and at least part of the second pipe body is a hose.
7. A method of ice protection, the method comprising:
acquiring a first gas temperature value in a crankcase ventilation pipe through a first temperature sensor arranged in the crankcase ventilation pipe;
acquiring a second gas temperature value in an air outlet pipe of the air filter through a second temperature sensor arranged on the air outlet pipe of the air filter;
determining a temperature comparison value according to the first gas temperature value and the second gas temperature value; the temperature comparison value represents a difference between the first gas temperature value and the second gas temperature value;
under the condition that the temperature comparison value is larger than a preset temperature threshold value, vibrating the crankcase ventilation pipe through a vibration component arranged at the interface of the crankcase ventilation pipe and the air outlet pipe of the air filter;
the crankcase ventilation pipe movably inserted at the other end of the sleeve and the sleeve with one end fixed on the air outlet pipe of the air filter are sealed through a sealing structure.
8. The method of claim 7, wherein determining a temperature comparison value from the first gas temperature value and the second gas temperature value comprises:
under the condition that the first gas temperature value and the second gas temperature value are the same in positive and negative, the absolute value of the first gas temperature value and the absolute value of the second gas temperature value are differed to obtain a temperature comparison value;
and under the condition that the first gas temperature value and the second gas temperature value are different in positive and negative, summing the absolute value of the first gas temperature value and the absolute value of the second gas temperature value to obtain a temperature comparison value.
9. The method of claim 7, wherein after vibrating the crankcase ventilation duct by a vibrating assembly disposed at an interface of the crankcase ventilation duct and the air cleaner outlet duct if the temperature comparison value is greater than a preset temperature threshold, further comprising:
and stopping vibrating the crankcase ventilation pipe through the vibration assembly under the condition that the temperature comparison value is smaller than or equal to a preset temperature threshold value.
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| CN202110413245.7A CN114645748B (en) | 2021-04-16 | 2021-04-16 | Anti-icing device and anti-icing method |
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| CN202110413245.7A CN114645748B (en) | 2021-04-16 | 2021-04-16 | Anti-icing device and anti-icing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4683486B2 (en) * | 2006-02-21 | 2011-05-18 | 本田技研工業株式会社 | Engine with breather device |
| JP6522410B2 (en) * | 2015-04-27 | 2019-05-29 | ヤンマー株式会社 | Engine equipment |
| CN106286041A (en) * | 2015-06-04 | 2017-01-04 | 观致汽车有限公司 | Engine charge assembly, engine system and the method preventing engine air inlet tube inner accumulated berg |
| KR101965836B1 (en) * | 2017-12-28 | 2019-04-04 | 주식회사 현대케피코 | A device for preventing blow by gas of a intake manifold from icing |
| KR102610324B1 (en) * | 2018-11-07 | 2023-12-06 | 현대자동차주식회사 | Intake hose for lowering intake air temperature and vibration and its operation method |
| CN112282891B (en) * | 2019-07-25 | 2022-02-22 | 长城汽车股份有限公司 | Crankcase ventilation control method and crankcase ventilation system |
| CN211900736U (en) * | 2020-01-22 | 2020-11-10 | 上海汽车集团股份有限公司 | Anti-icing device of crankcase ventilation pipe and automobile |
| CN212003300U (en) * | 2020-03-23 | 2020-11-24 | 河北永盛汽车配件制造有限公司 | Crankcase ventilation pipe heating structure and motor vehicle |
| CN112483288A (en) * | 2020-11-04 | 2021-03-12 | 东风汽车集团有限公司 | Crankcase breather pipe anti-icing structure and vehicle |
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