CN113107638A - Anti-icing method and device for oil-gas separation system of engine - Google Patents
Anti-icing method and device for oil-gas separation system of engine Download PDFInfo
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- CN113107638A CN113107638A CN202110394226.4A CN202110394226A CN113107638A CN 113107638 A CN113107638 A CN 113107638A CN 202110394226 A CN202110394226 A CN 202110394226A CN 113107638 A CN113107638 A CN 113107638A
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- oil
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- return pipe
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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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0472—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil using heating means
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to the technical field of anti-icing of an oil-gas separation system, and relates to an anti-icing method and an anti-icing device for an engine oil-gas separation system, wherein the method comprises the following steps: s1: set up with oil and gas separator shape assorted heat preservation parcel layer, return oil pipe and set up the electrical heating assembly, include in the electrical heating assembly: temperature control module and time control module, temperature control module includes: temperature sensor and temperature detect switch, time control module includes: a timer and a time switch; s2: judging whether the engine is in a starting or stopping state, if the engine is in the starting state, actuating a time switch, acquiring the pipe wall temperature data of an oil return pipe through a temperature sensor, and judging whether to start the electric heating assembly according to the acquired pipe wall temperature data of the oil return pipe; s3: and if the engine is in a stop running state, activating a timer, and then acquiring the pipe wall temperature data of the oil return pipe through a temperature sensor. The invention has the advantage of preventing the oil-gas separation system from freezing.
Description
Technical Field
The invention belongs to the technical field of anti-icing of oil-gas separation systems, and particularly relates to an anti-icing method and device of an engine oil-gas separation system.
Background
According to emission regulations, a closed circulation system is adopted in a crankcase ventilation system of a natural gas engine. After oil gas from the crankcase is separated by the oil-gas separator, the gas is reintroduced into the air intake system, and the engine oil flows back to the oil pan.
In the prior art, because the water content in oil gas of a natural gas engine is large, the temperature is rapidly reduced after the engine is stopped in an extremely cold environment, and the moisture in an oil-gas separator and a related pipeline is frozen. When the engine is restarted, the oil-gas separator system is frozen and blocked, and oil gas can not circulate normally, so that the pressure of the crankcase is increased, and the engine oil is leaked. This is a drawback in the prior art.
In view of the above, the present invention provides an anti-icing method and device for an oil-gas separation system of an engine, so as to solve the defects in the prior art.
Disclosure of Invention
The invention aims to provide an anti-icing method and an anti-icing device for an oil-gas separation system of an engine, aiming at the technical defects that in the prior art, when the engine is restarted, the oil-gas separation system is iced and blocked, oil gas can not circulate normally, the pressure of a crankcase is increased, and the leakage of engine oil is caused.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an anti-icing method for an oil-gas separation system of an engine, which comprises the following steps:
s1: a heat-insulating wrapping layer matched with the shape of the oil-gas separator is arranged, the heat-insulating wrapping layer is sleeved on the outer surface of the oil-gas separator,
it sets up the electrical heating assembly to return oil pipe, the electrical heating assembly in include temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: a timer and a time switch; the temperature sensor collects the temperature data of the inner wall of the oil return pipe and controls the opening and closing of the electric heating assembly through the temperature control switch;
s2: judging whether the engine is in a starting state or a running stopping state, if the engine is in the starting state, closing a time switch, acquiring the pipe wall temperature data of an oil return pipe through a temperature sensor, and judging whether to start the electric heating assembly according to the acquired pipe wall temperature data of the oil return pipe;
s3: and if the engine is in a stop running state, activating a timer in the time control module, and then acquiring the pipe wall temperature data of the oil return pipe through the temperature sensor.
Preferably, in step S1, the electric heating assembly further includes an insulated electric heating wire wound around an outer surface of the oil return pipe, the outer surface of the oil return pipe is wrapped by a corrugated pipe, the insulated electric heating wire is fixed to the oil return pipe by a heat conductive adhesive tape, and the insulated electric heating wire is connected to the temperature control module and the time control module.
Preferably, in step S1, the heat-insulating wrapping layer is fixed on the outer surface of the oil-gas separator by a spring clip.
The effect of this step is: fix the heat preservation parcel layer at oil and gas separator surface through the spring buckle, make things convenient for the dismouting of heat preservation parcel layer.
Preferably, in step S2, a minimum temperature value and a maximum temperature value are preset, and when the temperature of the pipe wall of the oil return pipe measured by the temperature sensor is lower than the preset minimum temperature value, the temperature control switch is closed, and the electric heating assembly starts to heat; when the temperature sensor detects that the temperature of the wall of the oil return pipe is higher than a preset maximum temperature value, the temperature control switch is switched off, and the electric heating assembly stops heating.
The effect of this step is: when the automobile is started, the temperature sensor monitors the temperature of the pipe wall of the oil return pipe in real time, and the electric heating assembly is started or closed according to the measured temperature, so that the temperature of the oil return pipe is maintained within a certain temperature range.
Preferably, step S3 includes: judging whether the time for stopping the engine is in a set timing time range, if so, acquiring the pipe wall temperature data of the oil return pipe, actuating the temperature control switch when the pipe wall temperature of the oil return pipe is less than a preset lowest temperature value, starting heating the electric heating assembly, and disconnecting the temperature control switch when the pipe wall temperature of the oil return pipe is greater than a preset highest temperature value, and stopping heating the electric heating assembly; if not, the timer is closed, and the electric heating assembly is closed.
The effect of this step is: when the automobile stops running, a timer in the time control module is combined with a temperature sensor in the temperature control module, so that the oil return pipe still maintains a certain temperature within a set time.
The invention also provides an anti-icing device of the oil-gas separation system of the engine, which comprises:
oil-gas separator heat preservation unit: the outer surface of the oil-gas separator is provided with a heat-insulation coating layer, and the shape of the heat-insulation coating layer is matched with that of the oil-gas separator;
oil return pipe heat preservation unit: it sets up the electrical heating assembly to return oil pipe, to returning oil pipe heating through the electrical heating assembly, the electrical heating assembly include: temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: the temperature sensor is arranged on the inner wall of the oil return pipe.
Preferably, in the oil-gas separator heat preservation unit, the heat preservation wrapping layer is fixed on the outer surface of the oil-gas separator through a spring buckle.
Preferably, in the oil return pipe heat preservation unit, the electric heating assembly further comprises an insulated electric heating wire wound on the outer surface of the oil return pipe, the corrugated pipe is wrapped on the outer surface of the oil return pipe, the insulated electric heating wire is fixed on the oil return pipe through a heat conduction adhesive tape, and the insulated electric heating wire is connected with the temperature control module and the time control module.
Preferably, in the oil return pipe heat preservation unit, when the engine is in a starting state, the time switch is actuated, the temperature sensor is used for acquiring the pipe wall temperature data of the oil return pipe, a preset lowest temperature value and a preset highest temperature value, and when the pipe wall temperature of the oil return pipe measured by the temperature sensor is smaller than the preset lowest temperature value, the temperature control switch is actuated, and the electric heating assembly starts to heat; when the temperature sensor detects that the temperature of the wall of the oil return pipe is higher than a preset maximum temperature value, the temperature control switch is switched off, and the electric heating assembly stops heating;
when the engine is in the stop running state, a timer in the time control module is activated, whether the stop running time of the engine is in the set timing time range or not is judged,
if yes, acquiring the pipe wall temperature data of the oil return pipe, and a preset lowest temperature value and a preset highest temperature value, actuating the temperature control switch when the pipe wall temperature of the oil return pipe is lower than the preset lowest temperature value, starting heating the electric heating assembly, and disconnecting the temperature control switch when the pipe wall temperature of the oil return pipe is higher than the preset highest temperature value, and stopping heating the electric heating assembly;
if not, the timer is closed, and the electric heating assembly is closed.
The oil-gas separator has the beneficial effects that the heat-insulation wrapping layer is arranged on the outer surface of the oil-gas separator, so that the heat dissipation loss of oil gas to the environment can be effectively inhibited, the oil return pipe is electrically heated, the oil return pipe can be ensured to have certain temperature within a period of time after the engine is stopped, oil containing moisture can fully flow back to the oil pan, meanwhile, the oil return pipe is rapidly heated within a period of time after the engine is cold started, and the oil return pipeline is ensured to return oil smoothly. The invention has strong practicability and is convenient for popularization. In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
FIG. 1 is a schematic diagram of an anti-icing method for an oil-gas separation system of an engine according to the embodiment.
Fig. 2 is a schematic block diagram of an anti-icing device of an oil-gas separation system of an engine according to the present embodiment.
FIG. 3 is a schematic diagram of the composition of the oil-gas separation system.
FIG. 4 is a flow chart of operation of the electric heating assembly during engine start-up conditions.
FIG. 5 is a flow chart of operation of the electric heating assembly during an engine shutdown condition.
The system comprises an oil-gas separator air inlet pipe, an oil-gas separator air inlet rubber pipe, an oil-gas separator, an oil return pipe, an oil-gas separator heat preservation unit and an oil return pipe heat preservation unit, wherein the oil-gas separator air inlet rubber pipe is 2, the oil-gas separator heat preservation unit is 3, the oil return pipe is 4, the oil-gas separator heat preservation unit is 5.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in fig. 1, the embodiment provides an anti-icing method for an oil-gas separation system of an engine, comprising the following steps:
s1: the oil-gas separator heat insulation device is characterized in that a heat insulation wrapping layer matched with the oil-gas separator in shape is arranged, the heat insulation wrapping layer is made of a composite high-temperature-resistant heat insulation material, an outer layer material can resist two hundred twenty degrees centigrade, the heat conductivity coefficient of the composite material is 0.038W/(m.K), heat dissipation of the oil-gas separator can be well prevented, the heat insulation wrapping layer is sleeved on the outer surface of the oil-gas separator, the heat insulation wrapping layer is fixed on the outer surface of the oil-gas separator through a spring buckle, and the heat insulation wrapping layer is fixed on the outer surface of the oil-gas separator through;
it sets up the electric heating assembly to return oil pipe, the electric heating assembly in include: temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: a timer and a time switch; the temperature sensor collects the temperature data of the inner wall of the oil return pipe, and the opening and closing of the electric heating assembly are controlled through the temperature control switch;
the electric heating assembly further comprises an insulated electric heating wire wound on the outer surface of the oil return pipe, the corrugated pipe is wrapped on the outer surface of the oil return pipe, the insulated electric heating wire is fixed on the oil return pipe through a heat conducting adhesive tape, and the insulated electric heating wire is connected with the temperature control module and the time control module.
S2: judging whether the engine is in a starting state or a running stopping state, as shown in fig. 4, if the engine is in the starting state, closing a time switch, acquiring the pipe wall temperature data of an oil return pipe through a temperature sensor, and judging whether to start the electric heating assembly according to the acquired pipe wall temperature data of the oil return pipe; presetting a minimum temperature value of five degrees centigrade and a maximum temperature value of eighty degrees centigrade, and when the temperature of the pipe wall of the oil return pipe measured by the temperature sensor is less than five degrees centigrade, closing the temperature control switch in an actuation manner, and starting heating of the electric heating assembly; when the temperature sensor detects that the temperature of the wall of the oil return pipe is higher than eighty ℃, the temperature control switch is switched off, and the electric heating assembly stops heating. When the automobile is started, the temperature sensor monitors the temperature of the pipe wall of the oil return pipe in real time, and the electric heating assembly is started or closed according to the measured temperature, so that the temperature of the oil return pipe is maintained within a certain temperature range.
S3: as shown in fig. 5, if the engine is in a stop state, a timer in the time control module is activated, and then the temperature data of the pipe wall of the oil return pipe is acquired through the temperature sensor; judging whether the time for stopping the engine is within one hour of a set timing time range, if so, acquiring the pipe wall temperature data of the oil return pipe, actuating a temperature control switch when the pipe wall temperature of the oil return pipe is less than five preset degrees centigrade, starting heating by an electric heating assembly, and disconnecting the temperature control switch when the pipe wall temperature of the oil return pipe is more than eighty preset degrees centigrade, and stopping heating by the electric heating assembly; if not, the timer is closed, and the electric heating assembly is closed. When the automobile stops running, a timer in the time control module is combined with a temperature sensor in the temperature control module, so that the oil return pipe still maintains a certain temperature within a set time.
As shown in fig. 2, the embodiment further provides an anti-icing device for an oil-gas separation system of an engine, which includes:
oil-gas separator heat preservation unit 5: the outer surface of the oil-gas separator 3 is provided with a heat-insulating wrapping layer, and the shape of the heat-insulating wrapping layer is matched with that of the oil-gas separator 3.
In the oil-gas separator heat preservation unit 5, the heat preservation wrapping layer is fixed on the outer surface of the oil-gas separator 3 through a spring buckle.
Oil return pipe heat preservation unit 6: return oil pipe 4 and set up the electrical heating assembly, return oil pipe 4 heating through the electrical heating assembly, the electrical heating assembly include: temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: a timer and a time switch, wherein the temperature sensor is arranged on the inner wall of the oil return pipe 4.
In the oil return pipe heat preservation unit 6, the material of heat preservation parcel layer be compound high temperature resistant insulation material, outer material can be able to bear two hundred twenty degrees centigrade, this combined material coefficient of heat conductivity is 0.038W/(m.K), the thermal scattering and disappearing of 3 oil and gas separators of separation that can be fine, the electrical heating assembly still include the winding insulating electric heating wire of oil return pipe 4 surface, oil return pipe 4 surface parcel bellows, insulating electric heating wire pass through the heat conduction sticky tape and fix on oil return pipe 4, insulating electric heating wire connect temperature control module and time control module.
As shown in fig. 4, when the engine is in a starting state, the time switch is closed, the temperature sensor obtains the pipe wall temperature data of the oil return pipe 4, and the preset lowest temperature value of five degrees celsius and the preset highest temperature value of eighty degrees celsius, and when the temperature sensor detects that the pipe wall temperature of the oil return pipe 4 is less than the preset five degrees celsius, the temperature control switch is closed, and the electric heating assembly starts to heat; when the temperature sensor detects that the temperature of the wall of the oil return pipe 4 is higher than the preset eighty ℃, the temperature control switch is switched off, and the electric heating assembly stops heating. As shown in fig. 5, when the engine is in a stop operation state, activating a timer in the time control module, and determining whether the stop operation time of the engine is within one hour of a set timing time range, if so, acquiring data of a pipe wall temperature of the oil return pipe 4, and preset minimum temperature value five degrees celsius and maximum temperature eighty degrees celsius, when the pipe wall temperature of the oil return pipe 4 is less than the preset five degrees celsius, the temperature control switch is closed, the electric heating assembly starts to heat, and when the pipe wall temperature of the oil return pipe 4 is greater than the preset eighty degrees celsius, the temperature control switch is opened, and the electric heating assembly stops heating; if not, the timer is closed, and the electric heating assembly is closed.
As shown in fig. 3, the components involved in the oil-gas separation system of the present embodiment include: the oil-gas separator air inlet pipe 1, the oil-gas separator air inlet rubber pipe 2, the oil-gas separator 3 and the oil return pipe 4 are used for heat preservation and wrapping of the oil-gas separator 3, so that the heat dissipation rate of oil gas to the external environment is greatly reduced, and certain oil gas temperature in the oil-gas separator 3 is guaranteed. The oil return pipeline adopts an electric heating method, and the oil return pipe 4 is ensured to have certain temperature within a period of time after the engine is stopped, so that oil containing moisture can fully flow back to the oil pan, and the phenomenon that the oil return pipe 4 is frozen to cause the blockage of the pipeline in the oil return process is avoided. Meanwhile, in a period of time after the engine is cold started, the oil return pipe 4 is quickly heated, and the oil return of the oil return pipeline is ensured to be smooth.
The above disclosure is only for the preferred embodiments of the invention, but the invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the invention shall fall within the protection scope of the invention.
Claims (9)
1. An anti-icing method for an oil-gas separation system of an engine is characterized by comprising the following steps:
s1: a heat-insulating wrapping layer matched with the shape of the oil-gas separator is arranged, the heat-insulating wrapping layer is sleeved on the outer surface of the oil-gas separator,
it sets up the electric heating assembly to return oil pipe, the electric heating assembly in include: temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: a timer and a time switch; the temperature sensor collects the temperature data of the inner wall of the oil return pipe and controls the opening and closing of the electric heating assembly through the temperature control switch;
s2: judging whether the engine is in a starting state or a running stopping state, if the engine is in the starting state, closing a time switch, acquiring the pipe wall temperature data of an oil return pipe through a temperature sensor, and judging whether to start the electric heating assembly according to the acquired pipe wall temperature data of the oil return pipe;
s3: and if the engine is in a stop running state, activating a timer in the time control module, and then acquiring the pipe wall temperature data of the oil return pipe through the temperature sensor.
2. The anti-icing method for the oil-gas separation system of the engine according to claim 1, wherein the anti-icing method comprises the following steps: in the step S1, the electric heating assembly further includes an insulated electric heating wire wound around the outer surface of the oil return pipe, the outer surface of the oil return pipe is wrapped by a corrugated pipe, the insulated electric heating wire is fixed to the oil return pipe through a heat conducting adhesive tape, and the insulated electric heating wire is connected to the temperature control module and the time control module.
3. The anti-icing method for the oil-gas separation system of the engine according to claim 2, wherein the anti-icing method comprises the following steps: in the step S1, the heat-insulating wrapping layer is fixed on the outer surface of the oil-gas separator by a spring buckle.
4. The anti-icing method for the oil-gas separation system of the engine according to claim 3, wherein the anti-icing method comprises the following steps: in the step S2, a minimum temperature value and a maximum temperature value are preset, and when the temperature of the pipe wall of the oil return pipe measured by the temperature sensor is lower than the preset minimum temperature value, the temperature control switch is closed, and the electric heating assembly starts to heat; when the temperature sensor detects that the temperature of the wall of the oil return pipe is higher than a preset maximum temperature value, the temperature control switch is switched off, and the electric heating assembly stops heating.
5. The anti-icing method for the oil-gas separation system of the engine according to claim 4, wherein the anti-icing method comprises the following steps: the step S3 includes: judging whether the time for stopping the engine is in a set timing time range, if so, acquiring the pipe wall temperature data of the oil return pipe, actuating the temperature control switch when the pipe wall temperature of the oil return pipe is less than a preset lowest temperature value, starting heating the electric heating assembly, and disconnecting the temperature control switch when the pipe wall temperature of the oil return pipe is greater than a preset highest temperature value, and stopping heating the electric heating assembly; if not, the timer is closed, and the electric heating assembly is closed.
6. The utility model provides an anti-icing device of engine oil-gas separation system which characterized in that: the method comprises the following steps:
oil-gas separator heat preservation unit: the outer surface of the oil-gas separator is provided with a heat-insulation coating layer, and the shape of the heat-insulation coating layer is matched with that of the oil-gas separator;
oil return pipe heat preservation unit: it sets up the electrical heating assembly to return oil pipe, to returning oil pipe heating through the electrical heating assembly, the electrical heating assembly include: temperature control module and time control module, temperature control module include: temperature sensor and temperature detect switch, time control module include: the temperature sensor is arranged on the inner wall of the oil return pipe.
7. The anti-icing device of an oil-gas separation system of an engine according to claim 6, wherein: in the oil-gas separator heat insulation unit, the heat insulation wrapping layer is fixed on the outer surface of the oil-gas separator through a spring buckle.
8. The anti-icing device of an oil-gas separation system of an engine according to claim 7, wherein: in the oil return pipe heat preservation unit, the electric heating assembly further comprises an insulated electric heating wire wound on the outer surface of the oil return pipe, the corrugated pipe wraps the outer surface of the oil return pipe, the insulated electric heating wire is fixed on the oil return pipe through a heat conduction adhesive tape, and the insulated electric heating wire is connected with the temperature control module and the time control module.
9. The anti-icing device of an oil-gas separation system of an engine according to claim 8, wherein: in the oil return pipe heat preservation unit, when an engine is in a starting state, a time switch is actuated, the temperature data of the pipe wall of the oil return pipe, a preset lowest temperature value and a preset highest temperature value are obtained through a temperature sensor, and when the pipe wall temperature of the oil return pipe measured by the temperature sensor is smaller than the preset lowest temperature value, a temperature control switch is actuated, and an electric heating assembly starts to heat; when the temperature sensor detects that the temperature of the wall of the oil return pipe is higher than a preset maximum temperature value, the temperature control switch is switched off, and the electric heating assembly stops heating;
when the engine is in the stop running state, a timer in the time control module is activated, whether the stop running time of the engine is in the set timing time range or not is judged,
if yes, acquiring the pipe wall temperature data of the oil return pipe, and a preset lowest temperature value and a preset highest temperature value, actuating the temperature control switch when the pipe wall temperature of the oil return pipe is lower than the preset lowest temperature value, starting heating the electric heating assembly, and disconnecting the temperature control switch when the pipe wall temperature of the oil return pipe is higher than the preset highest temperature value, and stopping heating the electric heating assembly;
if not, the timer is closed, and the electric heating assembly is closed.
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| CN202110394226.4A CN113107638B (en) | 2021-04-13 | 2021-04-13 | Anti-icing method and device for oil-gas separation system of engine |
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| CN202110394226.4A CN113107638B (en) | 2021-04-13 | 2021-04-13 | Anti-icing method and device for oil-gas separation system of engine |
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Cited By (1)
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| CN114033526A (en) * | 2021-11-29 | 2022-02-11 | 潍柴动力股份有限公司 | Oil-gas separator and control method thereof |
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| CN113107638B (en) | 2022-08-12 |
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