CN114837790B - Explosion-proof diesel engine heat balance management system and management strategy - Google Patents
Explosion-proof diesel engine heat balance management system and management strategy Download PDFInfo
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- CN114837790B CN114837790B CN202210519310.9A CN202210519310A CN114837790B CN 114837790 B CN114837790 B CN 114837790B CN 202210519310 A CN202210519310 A CN 202210519310A CN 114837790 B CN114837790 B CN 114837790B
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- control proportional
- radiator
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- 239000000110 cooling liquid Substances 0.000 claims abstract description 19
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 20
- 238000001816 cooling Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0204—Filling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
Abstract
The invention discloses an explosion-proof diesel engine heat balance management system and a management strategy, wherein the management system comprises an engine controller ECU, a heat management controller HCU, an engine radiator, an external circulation radiator, a temperature sensor I, a temperature sensor II, a pressure sensor I and a pressure sensor II, wherein the heat management controller ECU is communicated with the engine controller HCU rapidly; the heat management controller HCU controls the operation of the engine radiator through the electric control proportional valve I and the hydraulic motor I, and controls the operation of the external circulation radiator through the electric control proportional valve II and the hydraulic motor II; the engine radiator also comprises a cooling liquid replenishing box, wherein the cooling liquid replenishing box is used for providing cooling liquid for the engine radiator and the external circulation radiator, and the cooling liquid replenishing box is connected with the thermal management controller HCU. The invention can effectively carry out dynamic heat management on the explosion-proof diesel engine, so that the engine works in the optimal state.
Description
Technical Field
The invention relates to the technical field of explosion-proof diesel engines, in particular to an explosion-proof diesel engine heat balance management system and management strategy.
Background
The explosion-proof diesel engine is widely applied to various auxiliary transportation equipment for coal mines. As a power source of equipment, the normal operation of an engine is related to the performance and efficiency of the whole automobile, and the explosion-proof engine firstly needs to meet the requirements of surface temperature and exhaust temperature. The existing explosion-proof engine only carries out heat dissipation and cooling through the engine with a water pump, a fan and a radiator, cannot accurately carry out real-time temperature control according to the surface temperature change and the exhaust temperature change of the engine, has limited heat management control capacity and low efficiency, influences the performance of the engine, and underground equipment has strict requirements on size and volume, so that the whole size of the engine box can be influenced by adopting the form of directly driving the heat dissipation fan of the engine, and the reasonable arrangement of an engine system is not facilitated. The explosion-proof engine has bad use condition, and is basically at an engine torque point in normal use, and the rotating speed of the engine is low at the moment, so that the maximum heat dissipation capacity of an engine heat dissipation system can not be exerted, the engine is easy to overheat, and the construction efficiency is influenced. The existing driving mode of the explosion-proof engine cooling system adopts hydraulic motor driving or motor driving besides direct engine driving, hydraulic driving is adopted, cooling power is stable, but working conditions with different rotating speeds and different load factors cannot be accurately controlled, power consumption of the engine is high when the cooling power is high, power waste is easy to be caused, engine load is further increased, cooling requirements of all working conditions of the engine cannot be met when the cooling power is low, and problems such as overheating of the engine, wen Chaowen of surface temperature are easy to be caused; the motor-driven heat dissipation system can accurately adjust the rotating speed, but has strict explosion-proof requirements on the electric parts in the pit, the use of the explosion-proof box greatly limits the installation space, and the service life of the electric parts in the coal mine environment is lower, so that the use cost of the electric parts is higher.
Disclosure of Invention
The invention aims to provide an explosion-proof diesel engine heat balance management system and a management strategy, which can control the heat balance of an engine in real time so as to improve the working efficiency of the engine.
In order to achieve the above purpose, the invention provides an explosion-proof diesel engine heat balance management system, which comprises an engine controller ECU, a heat management controller HCU, an engine radiator and an external circulation radiator, wherein the heat management controller HCU and the engine controller ECU are communicated with each other; the heat management controller HCU controls the operation of the engine radiator through an electric control proportional valve I and a hydraulic motor I, and controls the operation of the external circulation radiator through an electric control proportional valve II and a hydraulic motor II; the engine radiator temperature control device comprises an engine radiator, a heat management controller HCU, a temperature sensor I, a temperature sensor II, a pressure sensor I and a pressure sensor II, wherein the temperature sensor I is used for collecting the temperature of the engine radiator and feeding back the temperature to the heat management controller HCU, the temperature sensor II is used for collecting the temperature of the external circulation radiator and feeding back the temperature to the heat management controller HCU, the pressure sensor I is used for collecting the pressure of the engine radiator and feeding back the pressure of the engine radiator to the heat management controller HCU, and the pressure sensor II is used for adopting the pressure of the external circulation radiator and feeding back the pressure of the external circulation radiator to the heat management controller HCU.
Further, a coolant makeup tank for supplying coolant to the engine radiator and the external circulation radiator is further included, the coolant makeup tank being connected with the thermal management controller HCU.
On the other hand, the invention also protects an explosion-proof diesel engine heat balance management strategy, T I Is that the temperature sensor I detects the real-time temperature of the engine radiator, T II Is that the temperature sensor II detects the real-time temperature of the external circulation radiator, T I Is T A ~T B ，T II Is T C ~T D ，
If T I And T is II In the set range, continuously reading the engine speed n and the load factor m in the engine controller ECU
If the read engine load rate m is more than 85%, the opening of the proportional valve is regulated according to the load rate, wherein the opening of the electric control proportional valve I is A I =A+mH I The opening degree of the electric control proportional valve II is A II =A+mH II ；
If the read engine load rate is less than 85%, the opening of the proportional valve is regulated according to the rotating speed, wherein the opening of the electric control proportional valve I is A I =A+nK I The opening degree of the electric control proportional valve II is A II =A+nK II ；
If T I And T is II The thermal management controller HCU detects the electric control proportional valve I and the electric control proportional valve II not in the set rangeOpening degree, if the electric control proportional valve I and the electric control proportional valve II are not fully opened,
then
If the read engine load rate is greater than 85%, the opening degree of the proportional valve is adjusted according to the load rate: the opening degree of the electric control proportional valve I is A I =A+mH I ＋q I （T I -T B ) The opening degree of the electric control proportional valve II is A II =A+mH II ＋q II （T II -T D ）；
If the load factor is less than 85%, controlling the opening of the electric control proportional valve I and the electric control proportional valve II according to the rotation speed of the engine: a is that I =A+nK I ＋p I （T I -T B ）、A II =A+nK II ＋p II （T II -T D ），p I 、p II Is a correction coefficient.
Further, if the electronically controlled proportional valve I or the electronically controlled proportional valve II is fully opened, the thermal management controller HCU controls the engine controller ECU to reduce the fuel injection amount of the engine.
Further, the pressure sensor I reads the real-time pressure P of the engine radiator I The real-time pressure of the external circulation radiator read by the pressure sensor II is P II The method comprises the steps of carrying out a first treatment on the surface of the If P I Or P II If the detection value is smaller than the set value P, continuing to detect; if P I Or P II And if the temperature is higher than the set value P, the thermal management controller HCU controls to open a pressure switch in the cooling liquid supplementing box to supplement cooling liquid for the engine radiator or the external circulation radiator.
The beneficial effects of the invention are as follows: the engine controller ECU is connected with the engine heat dissipation system through the heat management controller, so that the heat dissipation system is dynamically adjusted and is in an optimal state all the time under various rotating speeds and load rates of the engine, the self heat dissipation of the engine and the matching of exhaust heat dissipation and the heat dissipation system are ensured, the problems of overheating and overhigh temperature discharge of the engine caused by insufficient heat dissipation power are avoided, and meanwhile, the problem of power waste caused by overlarge heat dissipation power is also avoided.
Drawings
FIG. 1 is a block diagram of an engine thermal balance management system of the present invention;
FIG. 2 is a schematic diagram of an engine thermal balance management strategy of the present invention.
Description of the embodiments
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, the engine radiator comprises an engine controller ECU, a thermal management controller HCU, an engine radiator and an external circulation radiator, wherein the thermal management controller HCU and the engine controller ECU are communicated with each other through a CAN bus, the thermal management controller HCU controls the operation of the engine radiator through an electric control proportional valve I and a hydraulic motor I, and controls the operation of the external circulation radiator through an electric control proportional valve II and a hydraulic motor II. The system further comprises a temperature sensor I, a temperature sensor II, a pressure sensor I and a pressure sensor II, wherein the temperature sensor I is used for collecting the temperature of the engine radiator and feeding back the temperature to the heat management controller HCU, the temperature sensor II is used for collecting the temperature of the external circulation radiator and feeding back the temperature to the heat management controller HCU, the pressure sensor I is used for collecting the pressure of the engine radiator water chamber and feeding back the pressure to the heat management controller HCU, and the pressure sensor II is used for adopting the pressure of the external circulation radiator water chamber and feeding back the pressure to the heat management controller HCU. The system adopts the engine radiator and the external circulation radiator to radiate the heat of the explosion-proof diesel engine, so that the temperature of the engine can be effectively controlled, and the engine can be ensured to work in a normal temperature range.
In addition, the system further comprises a cooling liquid supplementing box, the cooling liquid supplementing box is used for providing cooling liquid for the engine radiator and the external circulation radiator, the cooling liquid supplementing box is connected with the thermal management controller HCU, the cooling liquid supplementing box can timely supplement antifreeze in the radiator under abnormal states such as overhigh pressure or reduced heat dissipation performance of the radiator, heat dissipation capacity is guaranteed, and overheating of the engine and overtemperature of exhaust caused by reduction of the heat dissipation capacity are avoided.
The system dynamically manages the heat dissipation of the two radiators by arranging the thermal management controller HCU and collecting the real-time temperature and the real-time pressure of the two radiators by means of the temperature sensor I, the temperature sensor II, the pressure sensor I and the pressure sensor II, so that the heat dissipation system is always in an optimal heat dissipation state, and the normal operation of the explosion-proof diesel engine is better protected. Through the cooperation of automatically controlled proportional valve and hydraulic motor, both reduced use cost and improved adaptability reliability can realize the accurate control of heat dissipation ability again, and can not receive the influence of engine position and arrange in a flexible way.
As shown in FIG. 2, the invention also discloses an explosion-proof diesel engine heat balance management strategy, T I Is that the temperature sensor I detects the real-time temperature of the engine radiator, T II Is that the temperature sensor II detects the real-time temperature of the external circulation radiator, T I Is T A ~T B ，T II Is T C ~T D ，
If T I And T is II In the set range, the heat management controller HCU continues to read the engine rotating speed n and the load factor m in the engine controller ECU, if the engine load factor m is more than 85 percent, the cooling requirement of the engine is improved, the engine radiator and the external circulation radiator need to keep up synchronously, the heat dissipation force is increased,
the thermal management controller HCU adjusts the opening of the proportional valve I and the opening of the proportional valve II according to the load rate to ensure that the openings are larger, wherein the opening of the electric control proportional valve I is A I =A+mH I The opening degree of the electric control proportional valve II is A II =A+mH II ；
If the read engine load rate is less than 85%, the thermal management controller adjusts the opening of the proportional valve I and the proportional valve II through the rotating speed of the engine, and the opening of the proportional valve I and the proportional valve II is larger as the rotating speed of the engine is larger, wherein the opening of the electric control proportional valve I is A I =A+nK I The opening degree of the electric control proportional valve II is A II =A+nK II ；
If T I And T is II If the opening degree of the electric control proportional valve I and the opening degree of the electric control proportional valve II are not in the set range, the heat management controller HCU detects the opening degree of the electric control proportional valve I and the opening degree of the electric control proportional valve II, and if the electric control proportional valve I and the electric control proportional valve II are not fully opened,
if the engine load rate is more than 85%, the opening degrees of the proportional valve I and the proportional valve II are regulated together according to the load rate and the temperature difference, namely, the higher the temperature of the engine is, the larger the opening degrees of the proportional valve I and the proportional valve II are, and the proportional valve I is controlled electrically
The opening degree of (A) I =A+mH I ＋q I （T I -T B ) The opening degree of the electric control proportional valve II is A II =A+mH II ＋q II （T II -T D ）；
If the load factor is less than 85%, controlling the opening of the electric control proportional valve I and the electric control proportional valve II according to the rotation speed of the engine: a is that I =A+nK I ＋p I （T I -T B ）、A II =A+nK II ＋p II （T II -T D ），p I 、p II Is a correction coefficient.
If the electric control proportional valve I or the electric control proportional valve II is fully opened, the heat management controller HCU controls the engine controller ECU to reduce the fuel injection quantity of the engine.
In addition, the pressure sensor I reads the real-time pressure P of the engine radiator I The real-time pressure of the external circulation radiator read by the pressure sensor II is P II If P I Or P II If the detection value is smaller than the set value P, continuing to detect; if P I Or P II And if the temperature is higher than the set value P, the thermal management controller HCU controls to open a pressure switch in the cooling liquid supplementing box to supplement cooling liquid for the engine radiator or the external circulation radiator.
In the thermal management strategy, the heat management controller HCU ensures the adaptability of the engine under two extreme working conditions of high rotating speed and heavy load through the control of the engine rotating speed and the load factor on the heat radiation system, communicates with the engine ECU and controls the engine oil injection quantity under the condition of overtemperature, and ensures the normal operation of the engine, thereby solving the problems that the adaptability of the traditional explosion-proof engine is poor under the extreme working condition, and the engine cannot be protected in time after overtemperature, so that the engine is damaged.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and the present invention is defined in the claims.
Claims (3)
1. An explosion-proof diesel engine heat balance management strategy is applied to an explosion-proof diesel engine heat balance management system, wherein the system comprises an engine controller ECU, a heat management controller HCU, an engine radiator and an external circulation radiator, and the heat management controller HCU and the engine controller ECU are communicated with each other; the heat management controller HCU controls the operation of the engine radiator through an electric control proportional valve I and a hydraulic motor I, and controls the operation of the external circulation radiator through an electric control proportional valve II and a hydraulic motor II; the system comprises a heat management controller HCU, an engine radiator, a heat management controller HCU, a temperature sensor I, a pressure sensor II and a pressure sensor II, wherein the temperature sensor I is used for acquiring the temperature of the engine radiator and feeding back the temperature to the heat management controller HCU;
the system further comprises a cooling liquid replenishing box, wherein the cooling liquid replenishing box is used for providing cooling liquid for the engine radiator and the external circulation radiator, and the cooling liquid replenishing box is connected with the thermal management controller HCU;
characterized by T I Is that the temperature sensor I detects the real-time temperature of the engine radiator, T II Is that the temperature sensor II detects the real-time temperature of the external circulation radiator, T I Is T A ~T B ，T II Is T C ~T D ，
If T I And T is II In the set range, continuously reading the engine speed n and the load factor m in the engine controller ECU
If the read engine load rate m is more than 85%, the opening of the electric control proportional valve is adjusted according to the load rate, wherein the opening of the electric control proportional valve I is A I =A+mH I The opening degree of the electric control proportional valve II isA II =A+mH II ，H I 、H II Is a correction coefficient;
if the read engine load rate is less than 85%, the opening of the electric control proportional valve is adjusted according to the rotating speed, wherein the opening of the electric control proportional valve I is A I =A+nK I The opening degree of the electric control proportional valve II is A II =A+nK II ，K I 、K II Is a correction coefficient;
if T I And T is II If the opening degree of the electric control proportional valve I and the opening degree of the electric control proportional valve II are not in the set range, the thermal management controller HCU detects the opening degree of the electric control proportional valve I and the opening degree of the electric control proportional valve II, and if the electric control proportional valve I and the electric control proportional valve II are not fully opened, the thermal management controller HCU controls the opening degree of the electric control proportional valve I and the opening degree of the electric control proportional valve II to be controlled by the thermal management controller HCU
If the engine load rate is more than 85%, the opening of the electric control proportional valve is adjusted according to the load rate: the opening degree of the electric control proportional valve I is A I =A+mH I ＋q I （T I -T B ) The opening degree of the electric control proportional valve II is A II =A+mH II ＋q II （T II -T D ），q I 、q II Is a correction coefficient;
if the load factor is less than 85%, controlling the opening of the electric control proportional valve I and the electric control proportional valve II according to the rotation speed of the engine: a is that I =A+nK I ＋p I （T I -T B ）、A II =A+nK II ＋p II （T II -T D ），p I 、p II Is a correction coefficient;
and A is the default opening degree of the electric control proportional valve I and the electric control proportional valve II.
2. The thermal balance management strategy of an explosion-proof diesel engine according to claim 1, wherein if the electronically controlled proportional valve I or the electronically controlled proportional valve II is fully opened, the thermal management controller HCU controls the engine controller ECU to reduce the amount of fuel injected from the engine.
3. An explosion-proof diesel engine thermal balance management strategy according to claim 1, wherein the pressure sensor I reads the engine radiator real-time pressure P I Pressure sensor II reads the external circulation radiatorThe real-time pressure is P II The method comprises the steps of carrying out a first treatment on the surface of the If P I Or P II If the detection value is smaller than the set value P, continuing to detect; if P I Or P II And if the temperature is higher than the set value P, the thermal management controller HCU controls to open a pressure switch in the cooling liquid supplementing box to supplement cooling liquid for the engine radiator or the external circulation radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519310.9A CN114837790B (en) | 2022-05-13 | 2022-05-13 | Explosion-proof diesel engine heat balance management system and management strategy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210519310.9A CN114837790B (en) | 2022-05-13 | 2022-05-13 | Explosion-proof diesel engine heat balance management system and management strategy |
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| CN114837790B true CN114837790B (en) | 2024-03-12 |
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| CN114837790A (en) | 2022-08-02 |
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