CN104481668B - A kind of temperature-controlled process of engine intelligent heat management electric water pump - Google Patents
A kind of temperature-controlled process of engine intelligent heat management electric water pump Download PDFInfo
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- CN104481668B CN104481668B CN201410561991.0A CN201410561991A CN104481668B CN 104481668 B CN104481668 B CN 104481668B CN 201410561991 A CN201410561991 A CN 201410561991A CN 104481668 B CN104481668 B CN 104481668B
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- temperature
- engine
- water pump
- tmin
- tmax
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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
- 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
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of temperature-controlled process of engine intelligent heat management electric water pump, comprises the following steps：It is that engine imports and exports the water temperature temperature difference in real time under engine current working to arrange Δ T (engine export water temperature deducts motor inlet water temperature), Δ Tmax_set imports and exports water temperature temperature difference higher limit for the engine arranged in water pump control strategy, and Δ Tmin_set imports and exports water temperature temperature difference lower limit for the engine arranged in water pump control strategy；Enter trip temperature judgement to real-time working condition, including：If the control target temperature of electric water pump is set to Δ Tmax_set by Δ T ＞ Δ Tmax_set；If Δ T≤Δ Tmax_set, determine whether Δ T whether less than Δ Tmin_set：If the control target temperature of electric water pump is set to Δ Tmin_set by Δ T ＜ Δ Tmin_set；If the control target temperature of electric water pump is equal to Δ T by Δ T >=Δ Tmin_set.Compared with prior art, the present invention improves energy consumption by adjusting the engine import and export water temperature temperature difference, effectively reduces the change frequency of annex rotating speed, and the total energy consumption of annex.
Description
Technical field
The present invention relates to the electric water in internal combustion engine control technology field, more particularly to internal combustion engine Intelligent heat management system
Pump control strategy.
Background technology
With the increasingly raising that automotive energy-saving emission-reducing is required, engine thermal management system faces new technological challenge.Tradition
In engine thermal management system, the rotating speed of the annex such as water pump, fan is rigid with engine speed couples, in Part load (especially
Under high rotating speed, middle-low load), energy consumption wastes serious.For this purpose, the intelligence with the variable annex such as electric water pump, electric fan as representative
Energy heat management system causes extensive concern in the industry.
Intelligent heat management system is generally made up of electronic thermostat, electric water pump, electric fan, radiator of water tank, such as Fig. 1
Shown, wherein energy-consuming parts mainly have electric water pump and electric fan, hereinafter referred to as annex.Electronic thermostat is by cooling water circulation
It is divided into big loop and minor loop, big loop refers to that cooling water, after radiator of water tank radiating, flows to water pump；Minor loop refers to cold
But water flows directly into water pump after electronic thermostat, and without radiator of water tank.One big advantage of Intelligent heat management system
It is the decoupling for realizing water pump, rotation speed of the fan and engine crankshaft so that the import and export water temperature of engine is flexibly controllable.Typically
The control of Intelligent heat management system, controls engine export water temperature using electric fan, and electric water pump control engine is imported and exported
The water temperature temperature difference.
At present, there is research institution to determine the control targe of engine export water temperature and done related work, will mainly send out
The target outlet water temperature of motivation is demarcated becomes map (engine speed RPM- distributive value mg/cycle- engine export water temperatures K),
Or directly control on a certain temperature value, on this basis, in order to ensure the thermal balance and security of engine, so as to
The engine import and export water temperature temperature difference is scheduled on 10K or 8K, and (engine export water temperature deducts motor inlet water temperature, and engine goes out
Saliva temperature is higher than always motor inlet water temperature).As the operating condition of engine changes fast, therefore under this control strategy,
The action change of annex is frequent, will shorten the service life of the motor for driving.Additionally, found by studying, equipped with electronic
On the heat management system of water pump and electric fan：Under some operating modes, keeping, engine export water temperature is constant, it is ensured that engine thermal
In the case of safety (i.e. engine imports and exports the water temperature temperature difference within 8K), by the import and export water temperature temperature difference for changing engine,
Annex total energy consumption can be made to improve 2%-20%, that is, it is not most suitable for 10K or 8K to keep engine to import and export the water temperature temperature difference
, under some operating modes, the appropriate engine that reduces imports and exports the total energy consumption that the water temperature temperature difference advantageously reduces annex.
The content of the invention
For the defect for overcoming above-mentioned prior art to exist, annex energy consumption is further saved, the present invention proposes a kind of sending out
Motivation intelligent thermal management electric water pump control method, imports and exports the state of the water temperature temperature difference according to current engine, reduces annex
The change frequency of rotating speed, reduces the total energy consumption of annex, realizes the strategy of the control targe for determining electric water pump in real time.
The present invention proposes a kind of temperature-controlled process of engine intelligent heat management electric water pump, and the method includes following
Step：
It is that engine imports and exports the water temperature temperature difference in real time under engine current working to arrange Δ T, and Δ Tmax_set is water pump
The engine arranged in control strategy imports and exports water temperature temperature difference higher limit, and Δ Tmin_set is sending out for arranging in water pump control strategy
Motivation imports and exports water temperature temperature difference lower limit；
Enter trip temperature judgement to real-time working condition, including：
If the control target temperature of electric water pump is set to Δ Tmax_set by Δ T ＞ Δ Tmax_set；
If Δ T≤Δ Tmax_set, determine whether Δ T whether less than Δ Tmin_set：
If the control target temperature of electric water pump is set to Δ Tmin_set by Δ T ＜ Δ Tmin_set；
If the control target temperature of electric water pump is equal to Δ T by Δ T >=Δ Tmin_set.
Compared with prior art, the present invention improves energy consumption by adjusting the engine import and export water temperature temperature difference, effectively reduces
The change frequency of annex rotating speed, and the total energy consumption of annex.
Description of the drawings
Structural representations of the Fig. 1 for Intelligent heat management system；
1st, engine；2nd, turbocharger；3rd, thermal management controller；4th, frequency converter；5th, fan electromotor；6th, pump motor；
7th, water pump；8th, radiator；9th, fan；10th, thermostat；
Control logic figures of the Fig. 2 for control strategy.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description, but the practical range of the present invention is not
It is confined to this.
The engine intelligent heat management electric water pump control method of the present invention, by formulating control mesh for electric water pump in real time
Mark, reduces the total energy of annex.As shown in Figure 2：Wherein Δ T is that engine imports and exports water temperature in real time under engine the present situation
The temperature difference, Δ Tmax_set are that the engine arranged in electric water pump control strategy imports and exports water temperature temperature difference higher limit, Δ Tmin_
Set is that the engine arranged in electric water pump control strategy imports and exports water temperature temperature difference lower limit, and wherein Δ Tmax_set is mainly
Ensure the thermally safe of engine, its method to set up is that, known to insider, here is not stated tired.The setting of Δ Tmin_set,
When under the main different operating modes by analysis, annex energy consumption is minimum, corresponding engine is imported and exported the water temperature temperature difference to determine.
Its control logic is as follows：
If the control targe of water pump is set to Δ Tmax_set by Δ T ＞ Δ Tmax_set；
If Δ T ＜ Δ Tmax_set, carry out next step judgement：Whether Δ T is less than Δ Tmin_set；
If water pump control targe is set to Δ Tmin_set by Δ T ＜ Δ Tmin_set；
If water pump control targe is equal to Δ T by Δ T >=Δ Tmin_set.
After judgement and calculating more than, you can determine the current control targe of electric water pump.
Claims (1)
1. a kind of temperature-controlled process of engine intelligent heat management electric water pump, it is characterised in that the method includes following step
Suddenly：
It is that engine imports and exports the water temperature temperature difference in real time under engine current working to arrange Δ T, and engine imports and exports the water temperature temperature difference
Motor inlet water temperature is deducted for engine export water temperature, Δ Tmax_set is passed in and out for the engine arranged in water pump control strategy
Saliva temperature temperature difference higher limit, Δ Tmin_set import and export water temperature temperature difference lower limit for the engine arranged in water pump control strategy；
Enter trip temperature judgement to real-time working condition, including：
If the control target temperature of electric water pump is set to Δ Tmax_set by Δ T ＞ Δ Tmax_set；
If Δ T≤Δ Tmax_set, determine whether Δ T whether less than Δ Tmin_set：
If the control target temperature of electric water pump is set to Δ Tmin_set by Δ T ＜ Δ Tmin_set；
If the control target temperature of electric water pump is equal to Δ T by Δ T >=Δ Tmin_set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561991.0A CN104481668B (en) | 2014-10-21 | 2014-10-21 | A kind of temperature-controlled process of engine intelligent heat management electric water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561991.0A CN104481668B (en) | 2014-10-21 | 2014-10-21 | A kind of temperature-controlled process of engine intelligent heat management electric water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481668A CN104481668A (en) | 2015-04-01 |
| CN104481668B true CN104481668B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410561991.0A Active CN104481668B (en) | 2014-10-21 | 2014-10-21 | A kind of temperature-controlled process of engine intelligent heat management electric water pump |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629150B (en) * | 2019-10-09 | 2022-08-26 | 佛山市顺德区美的饮水机制造有限公司 | Water treatment apparatus, control method thereof, and computer-readable storage medium |
| CN111561381A (en) * | 2020-04-20 | 2020-08-21 | 中国第一汽车股份有限公司 | Intelligent closed-loop control heat management method for gasoline engine based on electric water pump |
| CN114278423B (en) * | 2021-06-28 | 2023-10-13 | 天津大学 | Cooling liquid temperature prediction control method based on predictive extended state observer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950223A (en) * | 2004-05-10 | 2007-04-18 | 丰田自动车株式会社 | Heating control system for vehicle |
| CN103711566A (en) * | 2013-01-23 | 2014-04-09 | 日立汽车部件（苏州）有限公司 | Engine system |
| CN103867283A (en) * | 2014-04-02 | 2014-06-18 | 广西玉柴机器股份有限公司 | Intelligent thermal management system for diesel |
| CN104100351A (en) * | 2013-04-08 | 2014-10-15 | 现代自动车株式会社 | Method for controlling water pump of vehicle and system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551313B2 (en) * | 2012-12-19 | 2017-01-24 | Hino Motors, Ltd. | Engine cold start warmup method |
-
2014
- 2014-10-21 CN CN201410561991.0A patent/CN104481668B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950223A (en) * | 2004-05-10 | 2007-04-18 | 丰田自动车株式会社 | Heating control system for vehicle |
| CN103711566A (en) * | 2013-01-23 | 2014-04-09 | 日立汽车部件（苏州）有限公司 | Engine system |
| CN104100351A (en) * | 2013-04-08 | 2014-10-15 | 现代自动车株式会社 | Method for controlling water pump of vehicle and system thereof |
| CN103867283A (en) * | 2014-04-02 | 2014-06-18 | 广西玉柴机器股份有限公司 | Intelligent thermal management system for diesel |
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| CN104481668A (en) | 2015-04-01 |
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Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
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