CN110925168B - Cooling control method and cooling control device for air compressor of engine - Google Patents
Cooling control method and cooling control device for air compressor of engine Download PDFInfo
- Publication number
- CN110925168B CN110925168B CN201910944204.3A CN201910944204A CN110925168B CN 110925168 B CN110925168 B CN 110925168B CN 201910944204 A CN201910944204 A CN 201910944204A CN 110925168 B CN110925168 B CN 110925168B
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- air compressor
- pressure value
- monitoring
- electromagnetic clutch
- cooling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention belongs to the technical field of vehicle engines, and particularly relates to a cooling control method and a cooling control device for an engine air compressor. The cooling control method of the engine air compressor comprises the following steps: monitoring the current state of the air compressor; and controlling an electric control water pump in the vehicle to run at full speed to cool the air compressor according to the working state of the air compressor. According to the cooling control method of the engine air compressor, the air compressor is in a working state, and an electric control water pump in a vehicle is controlled to run at full speed to cool the air compressor. The cooling effect of the air compressor is improved by forcing full-speed operation of the electric control water pump, so that the air compressor is prevented from being locally boiled, and the service life of the air compressor is prolonged.
Description
Technical Field
The invention belongs to the technical field of vehicle engines, and particularly relates to a cooling control method and a cooling control device for an engine air compressor.
Background
The air compressor is a device used for compressing gas, and is called an air compressor for short, the air compressor is cooled by using an electric control water pump, and when the flow of the water pump controlled by a system is small, the air compressor can have the problem of local boiling, so that the service life of the air compressor is shortened.
The existing air compressor uses an electric control water pump to cool the air compressor, and the air compressor can have the problem of local boiling.
Disclosure of Invention
The invention aims to at least solve the problem that the air compressor is cooled by using an electric control water pump and the air compressor can be partially boiled. The purpose is realized by the following technical scheme:
the invention provides a cooling control method of an air compressor of an engine, wherein the method comprises the following steps:
monitoring the current state of the air compressor;
and controlling an electric control water pump in the vehicle to run at full speed to cool the air compressor according to the working state of the air compressor.
According to the cooling control method of the engine air compressor, the air compressor is in a working state, and an electric control water pump in a vehicle is controlled to run at full speed to cool the air compressor. The cooling effect of the air compressor is improved by forcing the full-speed operation of the electric control water pump, so that the air compressor is prevented from being locally boiled, and the service life of the air compressor is prolonged.
In addition, the cooling control method of the engine air compressor according to the invention may also have the following additional technical features:
in some embodiments of the present invention, the monitoring the current state of the air compressor includes: judging that the air compressor is a mechanical air compressor;
comparing the current pressure value of the gas cylinder in the vehicle with a first preset pressure value;
and determining that the mechanical air compressor is in a working state according to the condition that the current pressure value of the air cylinder is smaller than a first preset pressure value.
In some embodiments of the present invention, the monitoring the current state of the air compressor includes: judging that the air compressor is an electromagnetic clutch type air compressor;
the air compressor is an electromagnetic clutch type air compressor, and the electromagnetic clutch type air compressor is in a working state.
In some embodiments of the present invention, the operation state of the electromagnetic clutch air compressor is determined according to the engagement state of the electromagnetic clutch air compressor.
In some embodiments of the present invention, after determining that the mechanical air compressor is in the working state according to that the current pressure value of the air cylinder is smaller than a first preset pressure value, the method further includes:
and judging the current pressure value of the gas cylinder and a second preset pressure value, and determining that the mechanical air compressor is in an unloading state according to the fact that the current pressure value of the gas cylinder is larger than or equal to the second preset pressure value.
Another aspect of the present invention also provides a cooling control apparatus for an engine air compressor, wherein the cooling control apparatus is configured to execute the above cooling control method for the engine air compressor, and the cooling control apparatus includes: monitoring unit and water pump control unit, wherein:
the monitoring unit is used for monitoring the current state of the air compressor;
and the water pump control unit is used for controlling an electric control water pump in the vehicle to run at full speed to cool the air compressor according to the working state of the air compressor.
In some embodiments of the present invention, the apparatus further includes a determining unit, configured to determine that the air compressor is a mechanical air compressor, and compare whether a current pressure value of an air cylinder in the vehicle is smaller than a first preset pressure value.
In some embodiments of the invention, the monitoring unit comprises a first monitoring unit and/or a second monitoring unit;
the first monitoring unit is used for monitoring the current pressure value of the gas cylinder;
and the second monitoring unit is used for monitoring that the electromagnetic clutch type air compressor is in a working state.
In some embodiments of the present invention, the second monitoring unit monitors that the electromagnetic clutch air compressor is in the working state by monitoring that the electromagnetic clutch of the electromagnetic clutch air compressor is in the engagement state.
In some embodiments of the present invention, the determining unit is further configured to determine whether a current pressure value of the gas cylinder is greater than a second preset pressure value.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 is a flowchart schematically showing a cooling control method of an engine air compressor according to an embodiment of the present invention;
fig. 2 is a control block diagram schematically showing a cooling control method of an engine air compressor according to an embodiment of the present invention;
FIG. 3 is a flow chart of one embodiment of the embodiment of FIG. 1;
fig. 4 is a block diagram schematically illustrating a cooling control apparatus of an engine air compressor according to an embodiment of the present invention.
1: a first monitoring unit; 2: a second monitoring unit; 3: a judgment unit; 4: and a water pump control unit.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The invention provides a cooling control method of an engine air compressor, which is used for cooling the air compressor and preventing the air compressor from locally boiling.
As shown in fig. 1, the method for controlling cooling of an air compressor of an engine in the present embodiment includes the following steps:
s1, monitoring the current state of the air compressor;
and S2, controlling an electric control water pump in the vehicle to operate at full speed to cool the air compressor according to the working state of the air compressor.
According to the cooling control method of the engine air compressor, the air compressor is in a working state, and the electric control water pump in the vehicle is controlled to operate at full speed to cool the air compressor. The cooling effect of the air compressor is improved by forcing full-speed operation of the electric control water pump, so that the air compressor is prevented from being locally boiled, and the service life of the air compressor is prolonged.
As shown in fig. 3, in some embodiments of the invention,
s11, monitoring the current state of the air compressor comprises the following steps: judging that the air compressor is a mechanical air compressor;
the air compressor is a mechanical air compressor, and the current pressure value of an air bottle in the vehicle is compared with a first preset pressure value;
and determining that the mechanical air compressor is in a working state according to the condition that the current pressure value of the air bottle is smaller than a first preset pressure value, and controlling the electric control water pump to operate at full speed to cool the mechanical air compressor.
The air compressor is a mechanical air compressor, and the working state of the air compressor is indirectly judged by judging the current pressure value of the air cylinder and the first preset pressure value. The full-speed operation is forced through the electric control water pump, the cooling effect of the mechanical air compressor is improved, the mechanical air compressor is prevented from being locally boiled, and the service life of the air compressor is prolonged.
In some embodiments of the present invention, the,
s12, monitoring the current state of the air compressor comprises the following steps: judging that the air compressor is an electromagnetic clutch type air compressor;
and controlling the electrically controlled water pump to run at full speed to cool the electromagnetic clutch type air compressor according to the condition that the air compressor is an electromagnetic clutch type air compressor and the electromagnetic clutch type air compressor is in a working state.
The air compressor is an electromagnetic clutch type air compressor, the electromagnetic clutch type air compressor is judged to be turned on or turned off, if yes, the electric control water pump is controlled to operate at full speed forcibly, the cooling effect of the electromagnetic clutch type air compressor is improved, the electromagnetic clutch type air compressor is prevented from being boiled locally, and the service life of the air compressor is prolonged. If not, the electric control water pump is controlled to normally operate.
In some embodiments of the present invention, the operation state of the electromagnetic clutch type air compressor is determined according to the engagement state of the electromagnetic clutch type air compressor.
The engine uses an electromagnetic clutch type air compressor, when the magnetic clutch type air compressor works, the ECU acquires a signal combined by an electromagnetic clutch of the magnetic clutch type air compressor, the electronic control water pump is forced to run at full speed, after the electromagnetic clutch of the magnetic clutch type air compressor is separated, the electronic control water pump exits the forced full-speed running mode, and normal water pump control logic is run.
And a signal of combination or separation of the electromagnetic clutch is obtained through the controller ECU, and the current pressure value of the gas cylinder is sent to the controller ECU through the CAN bus.
In some embodiments of the present invention, after determining that the mechanical air compressor is in the working state according to that the current pressure value of the air cylinder is smaller than the first preset pressure value, the method further includes:
and judging the current pressure value of the gas cylinder and the second preset pressure value, and determining that the mechanical air compressor is in an unloading state according to the fact that the current pressure value of the gas cylinder is larger than or equal to the second preset pressure value.
The first set pressure value is X, X is 10bar, the second set pressure value is Y, Y is 12 bar.
As shown in fig. 2, the engine uses a mechanical air compressor, the whole vehicle end transmits a current pressure signal of the air cylinder to an engine controller ECU through a CAN bus, and the ECU judges whether the mechanical air compressor works or not according to the current pressure value of the air cylinder. When the initial pressure value of the gas cylinder is lower than Y bar, the mechanical air compressor works, when the initial pressure value of the gas cylinder reaches Y bar, the mechanical air compressor stops working, and when the pressure value of the gas cylinder is reduced to X bar again, the mechanical air compressor works again until the air pressure reaches Y bar. Therefore, when the pressure value of the gas cylinder is lower than X bar, the electric control water pump operates at full speed forcibly, and after the gas pressure reaches Y bar, the electric control water pump exits the forced full speed operation mode and operates normal electric control water pump control logic. When the air compressor is unloaded, the cooling problem does not need to be considered.
The second preset pressure value is greater than the first preset pressure value.
Another aspect of the present invention also provides a cooling control apparatus for an engine air compressor, wherein the cooling control apparatus for an engine air compressor is configured to execute the above cooling control method for an engine air compressor, and the cooling control apparatus includes: monitoring unit and water pump control unit 4, wherein:
the monitoring unit is used for monitoring the current state of the air compressor;
and the water pump control unit 4 is used for controlling an electric control water pump in the vehicle to run at full speed to cool the air compressor according to the working state of the air compressor.
In some embodiments of the present invention, the apparatus further includes a determining unit 3, configured to determine that the air compressor is a mechanical air compressor, and compare whether a current pressure value of an air cylinder in the vehicle is smaller than a first preset pressure value. And if the current pressure value of the gas cylinder is smaller than the first preset pressure value, controlling the electric control water pump to operate at full speed to cool the mechanical air compressor.
In some embodiments of the invention, the monitoring unit comprises a first monitoring unit 1 and/or a second monitoring unit 2;
the first monitoring unit 1 is used for monitoring the current pressure value of the gas cylinder;
the second monitoring unit 2 is used for monitoring that the electromagnetic clutch type air compressor is in a working state.
The first monitoring unit 1 monitors as follows: the signal of engagement or disengagement of the electromagnetic clutch is obtained by the controller ECU.
In some embodiments of the present invention, the second monitoring unit 2 monitors that the electromagnetic clutch air compressor is in the operating state by monitoring that the electromagnetic clutch of the electromagnetic clutch air compressor is in the engagement state.
The second monitoring unit 2 judges the engagement or disengagement of the electromagnetic clutch type air compressor, thereby judging the opening or closing of the electromagnetic clutch type air compressor.
In some embodiments of the present invention, the determining unit 3 is further configured to determine whether the current pressure value of the gas cylinder is greater than a second preset pressure value. And if the current pressure value of the gas cylinder is greater than or equal to the second preset pressure value, controlling the electric control water pump to normally operate.
In summary, in the cooling control method of the engine air compressor, when the mechanical air compressor is used, the whole vehicle end transmits the current pressure value signal of the air cylinder to the engine controller ECU through the CAN bus, and the ECU judges whether the mechanical air compressor works according to the current pressure value of the air cylinder, if the mechanical air compressor works, the electric control water pump is forced to run at full speed, and the cooling requirement of the mechanical air compressor is met. When the electromagnetic clutch type air compressor is used, the electromagnetic clutch type air compressor works, the ECU acquires the electromagnetic clutch combination of the electromagnetic clutch type air compressor, then the electronic control water pump is forced to run at full speed, and the cooling requirement of the electromagnetic clutch type air compressor is met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A cooling control method of an air compressor of an engine is characterized by comprising the following steps:
monitoring the current state of the air compressor;
controlling an electric control water pump in a vehicle to run at full speed to cool an air compressor according to the working state of the air compressor;
the current state of monitoring air compressor machine includes:
judging that the air compressor is a mechanical air compressor;
comparing the current pressure value of the gas cylinder in the vehicle with a first preset pressure value;
determining that the mechanical air compressor is in a working state according to the condition that the current pressure value of the air cylinder is smaller than a first preset pressure value;
the current state of monitoring air compressor machine includes:
judging that the air compressor is an electromagnetic clutch type air compressor;
according to the technical scheme, the air compressor is an electromagnetic clutch type air compressor, and the electromagnetic clutch type air compressor is in a working state;
determining that the electromagnetic clutch type air compressor is in a working state according to the fact that an electromagnetic clutch of the electromagnetic clutch type air compressor is in a combined state;
the method comprises the following steps that according to the fact that the current pressure value of the gas cylinder is smaller than a first preset pressure value, after the mechanical air compressor is determined to be in the working state, the method further comprises the following steps:
judging the current pressure value and a second preset pressure value of the gas cylinder, and determining that the mechanical air compressor is in an unloading state according to the fact that the current pressure value of the gas cylinder is greater than or equal to the second preset pressure value, wherein the second preset pressure value is greater than the first preset pressure value;
still include after the current state of monitoring air compressor machine:
and controlling the electric control water pump to operate in a normal mode according to the unloading state of the air compressor.
2. A cooling control device of an engine air compressor for executing the cooling control method of the engine air compressor according to claim 1, characterized by comprising: monitoring unit and water pump control unit, wherein:
the monitoring unit is used for monitoring the current state of the air compressor;
and the water pump control unit is used for controlling an electric control water pump in the vehicle to run at full speed to cool the air compressor according to the working state of the air compressor.
3. The cooling control apparatus for the engine air compressor according to claim 2,
the device also comprises a judging unit which is used for judging that the air compressor is a mechanical air compressor and comparing whether the current pressure value of the air cylinder in the vehicle is smaller than a first preset pressure value.
4. The cooling control device of the engine air compressor according to claim 3, characterized in that the monitoring unit includes a first monitoring unit and/or a second monitoring unit;
the first monitoring unit is used for monitoring the current pressure value of the gas cylinder;
and the second monitoring unit is used for monitoring that the electromagnetic clutch type air compressor is in a working state.
5. The cooling control device of the engine air compressor as claimed in claim 4, wherein the second monitoring unit monitors the electromagnetic clutch type air compressor to be in the working state by monitoring the electromagnetic clutch type air compressor to be in the engagement state.
6. The cooling control device of the engine air compressor as claimed in claim 2, wherein the determining unit is further configured to determine whether a current pressure value of the air cylinder is greater than a second preset pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944204.3A CN110925168B (en) | 2019-09-30 | 2019-09-30 | Cooling control method and cooling control device for air compressor of engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910944204.3A CN110925168B (en) | 2019-09-30 | 2019-09-30 | Cooling control method and cooling control device for air compressor of engine |
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| CN110925168A CN110925168A (en) | 2020-03-27 |
| CN110925168B true CN110925168B (en) | 2022-09-23 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535504A1 (en) * | 1975-08-08 | 1977-02-17 | Linde Ag | Compressor cooler with cooling tower absorbing heat from coolant - utilising steam jet refrigerating machine and heat exchangers |
| JPS6062687A (en) * | 1983-09-16 | 1985-04-10 | Matsushita Electric Ind Co Ltd | Cooling device for compressor |
| JPH0861245A (en) * | 1994-08-15 | 1996-03-08 | Kawamoto Seisakusho:Kk | Water feeding device |
| CN203742946U (en) * | 2014-03-24 | 2014-07-30 | 襄阳西顿自动化仪表有限公司 | Water-cooled air compressor energy saving device |
| CN104564633A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | System and method for controlling air compressor |
| CN105604923A (en) * | 2015-12-18 | 2016-05-25 | 潍柴动力股份有限公司 | Control device and control method of clutch air compressor system |
-
2019
- 2019-09-30 CN CN201910944204.3A patent/CN110925168B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535504A1 (en) * | 1975-08-08 | 1977-02-17 | Linde Ag | Compressor cooler with cooling tower absorbing heat from coolant - utilising steam jet refrigerating machine and heat exchangers |
| JPS6062687A (en) * | 1983-09-16 | 1985-04-10 | Matsushita Electric Ind Co Ltd | Cooling device for compressor |
| JPH0861245A (en) * | 1994-08-15 | 1996-03-08 | Kawamoto Seisakusho:Kk | Water feeding device |
| CN104564633A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | System and method for controlling air compressor |
| CN203742946U (en) * | 2014-03-24 | 2014-07-30 | 襄阳西顿自动化仪表有限公司 | Water-cooled air compressor energy saving device |
| CN105604923A (en) * | 2015-12-18 | 2016-05-25 | 潍柴动力股份有限公司 | Control device and control method of clutch air compressor system |
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| CN110925168A (en) | 2020-03-27 |
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