CN103711566A - Engine system - Google Patents
Engine system Download PDFInfo
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- CN103711566A CN103711566A CN201310025734.0A CN201310025734A CN103711566A CN 103711566 A CN103711566 A CN 103711566A CN 201310025734 A CN201310025734 A CN 201310025734A CN 103711566 A CN103711566 A CN 103711566A
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- engine
- water temperature
- cooling
- calculating part
- motor
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Abstract
The invention provides an engine system. The engine system is capable of increasing response speed and control precision in terms of cooling water temperature control. The water temperature control device comprises a water temperature control device. The water temperature control device comprises an engine target water temperature calculating part, an engine actual water temperature detecting part, an engine released heat calculating part, a cooling amount calculating part and a control part, wherein the engine target water temperature calculating part is used for calculating the target water temperature of the cooling water flowing into an engine, the engine actual water temperature detecting part is used for detecting the actual water temperature of the cooling water flowing into the engine, the engine released heat calculating part is used for calculating the heat generated by the engine, the cooling amount calculating part is used for calculating the current dissipated heat of the engine, and the control part is used for uniformly controlling the opening proportion of an electronic thermostat and the rotation speed of a fan according to the difference between the actual water temperature and the target water temperature and the difference between the released heat and the cooling amount, and accordingly the difference between the actual water temperature and the target water temperature is allowed to be 0.
Description
Technical field
The present invention relates to engine system.
Background technique
Engine system generally includes chilled(cooling) water return (CWR), in chilled(cooling) water return (CWR), be provided for by cooling water be delivered to the water pump of motor, for the cooling water of discharging from motor being carried out to cooling radiator, for fan that radiator is blown, by the electronic thermostat that regulates opening ratio to regulate being delivered to the temperature of the cooling water of motor.
In traditional engine system, for the cooling water of set point of temperature is delivered to motor, conventionally only utilize electronic thermostat to carry out the control of water temperature closed-loop feedback, according to the difference of cooling water true temperature and cooling water target temperature, determine the opening ratio of electronic thermostat, in cooling water true temperature during higher than cooling water target temperature, increase the opening ratio of electronic thermostat so that more cooling water inflow engine after flowing through radiator, and in cooling water true temperature during lower than cooling water target temperature, reduce the opening ratio of electronic thermostat so that more cooling water flows directly into motor in the situation that not flowing through radiator.
But, because closed-loop feedback is controlled the problem that has hysteresis quality, therefore there is the problem that speed of response is slow, control accuracy is not high.
Summary of the invention
The present invention completes in view of the above problems, and its object is to provide a kind of engine system improving speed of response, raising control accuracy aspect the cooling water temperature control of motor.
To achieve these goals, the engine system of the present invention the 1st aspect comprise water pump for cooling water being delivered to motor, for cooling water being carried out to cooling radiator, for fan that radiator is blown, by the electronic thermostat that regulates opening ratio to regulate being delivered to the temperature of the cooling water of motor.The engine system of the present invention the 1st aspect also comprises the water temperature control device for controlling being delivered to the temperature of the cooling water of motor, this water temperature control device comprises: engine target water temperature calculating part, and this engine target water temperature calculating part is for calculating the target water temperature of the cooling water of inflow engine; Motor actual water temperature detection unit, this motor actual water temperature detection unit is for detection of the actual water temperature of the cooling water of inflow engine; Motor thermal discharge calculating part, this motor thermal discharge calculating part is thermal discharge for calculating the heat of present engine generation; Engine cooling amount calculating part, it is amount of cooling water that this engine cooling amount calculating part is used for calculating present engine dispersed heat; And control device, this control device is poor according to described actual water temperature and described target water temperature, and poor according to described thermal discharge and described amount of cooling water, the rotating speed of the opening ratio of described electronic thermostat and described fan is unified to control, so that the difference of described actual water temperature and described target water temperature becomes 0.
The engine system of the present invention the 2nd aspect is on the basis of the engine system aspect the present invention the 1st, and described engine target water temperature calculating part calculates described target water temperature according to engine speed and engine load.
The engine system of the present invention the 3rd aspect is on the basis of the engine system aspect the present invention the 1st, described motor thermal discharge calculating part, according to a plurality of amounts in engine speed, engine load, engine igniting time and oil-break cylinder number, calculates described thermal discharge.
The engine system of the present invention the 4th aspect is on the basis of the engine system aspect the present invention the 1st, described engine cooling amount calculating part, according to a plurality of amounts in the aperture of the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, described electronic thermostat and ambient temperature, calculates described amount of cooling water.
According to engine system of the present invention, due to poor according to actual water temperature and target water temperature of control device, and poor according to described thermal discharge and described amount of cooling water, the rotating speed of the opening ratio of electronic thermostat and fan is unified to control, so that the difference of actual water temperature and target water temperature becomes 0, therefore speed of response can be aspect the cooling water temperature control of motor, improved, and control accuracy can be improved.
Accompanying drawing explanation
Fig. 1 means the schematic diagram of the structure of engine system of the present invention.
Fig. 2 means the schematic diagram of structure of the water temperature control device of engine system of the present invention.
Fig. 3 means the flow chart of an example of motion flow of the water temperature control device of engine system of the present invention.
Fig. 4 means the flow chart of an example of motion flow of the water temperature control device of engine system of the present invention.
Fig. 5 mean the performed action of the water temperature control device of engine system of the present invention 1.～flow chart 3., wherein, 1. Fig. 5 (a) represents action, 2. Fig. 5 (b) represents action, 3. Fig. 5 (c) represents action.
Fig. 6 means the flow chart of an example of motion flow of the water temperature control device of engine system of the present invention.
Fig. 7 mean the performed action of the water temperature control device of engine system of the present invention 4.～flow chart 6., wherein, 4. Fig. 7 (a) represents action, 5. Fig. 7 (b) represents action, 6. Fig. 7 (c) represents action.
Fig. 8 means the flow chart of an example of motion flow of the water temperature control device of engine system of the present invention.
Fig. 9 mean the performed action of the water temperature control device of engine system of the present invention 7.～flow chart 9., wherein, 7. Fig. 9 (a) represents action, 8. Fig. 9 (b) represents action, 9. Fig. 9 (c) represents action.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
First, according to Fig. 1, Fig. 2, the basic structure of the engine system 1 of present embodiment and water temperature control device 2 thereof is described.
As shown in Figure 1, the engine system 1 of present embodiment comprises chilled(cooling) water return (CWR) 100, this chilled(cooling) water return (CWR) 100 is by motor E, water pump WP, utilize radiator R and the electronic thermostat ET of the air-supply of fan F to connect into ring-type, wherein, described water pump WP is for being delivered to motor E by cooling water, described radiator R makes the cooling water of discharging from motor E and air carry out heat exchange to carry out cooling to cooling water, described electronic thermostat ET can be by regulating opening ratio so that more cooling water (opening ratio is 0 o'clock flowing through after radiator inflow engine or make more cooling water flow directly into motor in the situation that not flowing through radiator, the cooling water that flows into electronic thermostat ET all flows directly into motor in the situation that not flowing through radiator, increase along with opening ratio, the cooling water of inflow electronic thermostat ET is inflow engine after flowing through radiator more and more), thereby regulate flowing into the temperature of the cooling water of motor E.
As shown in Figure 2, the water temperature control device 2 of engine system of the present invention comprises engine target water temperature calculating part 201, motor actual water temperature detection unit 202, motor thermal discharge calculating part 203, engine cooling amount calculating part 204 and control device 205, wherein, described engine target water temperature calculating part 201 is for calculating the target water temperature of the cooling water of inflow engine, described motor actual water temperature detection unit 202 is for detection of the actual water temperature of the cooling water of inflow engine, the heat that described motor thermal discharge calculating part 203 produces for calculation engine is thermal discharge, described engine cooling amount calculating part 204 is amount of cooling water for calculation engine dispersed heat, described control device 205 is poor according to described actual water temperature and described target water temperature, and poor according to described thermal discharge and described amount of cooling water, the rotating speed of the opening ratio of described electronic thermostat ET and described fan is unified to control, so that the difference of described actual water temperature and described target water temperature becomes 0.
At this, described engine target water temperature calculating part 201 for example carrys out the target water temperature of the cooling water of calculation engine according to engine speed and engine load, described motor thermal discharge calculating part 203 for example carrys out the thermal discharge of calculation engine according to engine speed, engine load, engine igniting time and oil-break cylinder number, described engine cooling amount calculating part 204 for example carrys out the amount of cooling water of calculation engine according to the aperture of the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, described electronic thermostat and ambient temperature.
Then, according to an example of the control of the water temperature control device 1 of the engine system of Fig. 3～9 pair present embodiment, describe.
First, as shown in Figure 3, engine target water temperature calculating part 201 carrys out the target water temperature TWN of the cooling water of calculation engine according to engine speed and engine load
target(step S1), then, the heat that utilizes motor thermal discharge calculating part 203 to calculate present engine generation is thermal discharge Q
heat release(step S2), and to utilize engine cooling amount calculating part 204 to calculate present engine dispersed heat be amount of cooling water Q
cooling(step S3).
Then, the described target water temperature TWN of control device 205 judgement
targetwhether be greater than and utilize the detected actual water temperature TWN of motor actual water temperature detection unit 202
actual(step S4).In the situation that step S4 judgment result is that "Yes", process towards the control 1 of explanation is below advanced.
On the other hand, in the situation that step S4 judgment result is that "No", control device judges described target water temperature TWN
targetwhether equal described actual water temperature TWN
actual(step S5).In the situation that step S5 judgment result is that "Yes", process towards the control 2 of explanation is below advanced.
On the other hand, in the situation that step S5 judgment result is that "No", control device is judged as described target water temperature TWN
targetbe less than described actual water temperature TWN
actual, make to process towards the control 3 of explanation is below advanced.
According to Fig. 4, Fig. 5, to controlling 1, describe below.
[controlling 1]
In step S401, control device judgement Q
heat releasewhether equal Q
coolingif step S401 judgment result is that "Yes", processes towards step S403 and advances, 1. perform an action (with reference to Fig. 5 (a)).In action 1., at TWN
actualwith TWN
targetdifference be that Δ TWN while there is larger variation when t1 (in Fig. 5 (a)) starts fan immediately, then, reduce gradually rotation speed of the fan N
rFANand make the opening ratio L of electronic thermostat
eThermofrom initial openings ratio, increase gradually, then, when Δ TWN is less than for example ± 1 ℃ when t2 (in Fig. 5 (a)), reduces gradually the opening ratio of electronic thermostat and make it return to initial openings ratio.
On the other hand, if step S401 judgment result is that "No", control device judgement Q
heat releasewhether be greater than Q
cooling(step S402).If step S402 judgment result is that "Yes", process towards step S404 and advance, 2. perform an action (with reference to Fig. 5 (b)).In action 2., at TWN
actualwith TWN
targetdifference be that Δ TWN while there is larger variation when t1 (in Fig. 5 (b)) starts fan immediately, then, reduce gradually rotation speed of the fan N
rFANand make the opening ratio L of electronic thermostat
eThermofrom initial openings ratio, increase gradually.
On the other hand, if step S402 judgment result is that "No", process towards step S405 and advance, 3. perform an action (with reference to Fig. 5 (c)).In action 3., at TWN
actualwith TWN
targetdifference be that Δ TWN while there is larger variation when t1 (in Fig. 5 (c)) starts fan immediately, and make the rotational speed N of fan
rFANreduce gradually.In addition first maintain at the beginning, the opening ratio L of electronic thermostat
eThermoconstant, then, when Δ TWN is less than for example ± 1 ℃ when t2 (in Fig. 5 (c)), reduce gradually the opening ratio of electronic thermostat.
According to Fig. 6, Fig. 7, to controlling 2, describe below.
[controlling 2]
In step S501, control device judgement Q
heat releasewhether equal Q
coolingif step S501 judgment result is that "Yes", processes towards step S503 and advances, perform an action 4. (with reference to Fig. 7 (a)), does not operate.
On the other hand, if step S501 judgment result is that "No", control device judgement Q
heat releasewhether be greater than Q
cooling(step S502).If step S502 judgment result is that "Yes", process towards step S504 and advance, 5. perform an action (with reference to Fig. 7 (b)).In action 5., start immediately fan, then, reduce gradually rotation speed of the fan N
rFANand make the opening ratio L of electronic thermostat
eThermofrom initial openings ratio, increase gradually.
On the other hand, if step S502 judgment result is that "No", process towards step S505 and advance, 6. perform an action (with reference to Fig. 7 (c)).In action 6., reduce gradually the opening ratio L of electronic thermostat
eThermo.
According to Fig. 8, Fig. 9, to controlling 3, describe below.
[controlling 3]
In step S601, control device judgement Q
heat releasewhether equal Q
coolingif step S601 judgment result is that "Yes", processes towards step S603 and advances, 7. perform an action (with reference to Fig. 9 (a)).In action 7., at TWN
actualwith TWN
targetdifference be Δ TWN while there is larger variation when t1 (in Fig. 9 (a)), first reduce gradually the opening ratio L of electronic thermostat
eThermo, then, at TWN
actualwith TWN
targetdifference be Δ TWN while being less than for example ± 1 ℃ when t2 (in Fig. 9 (a)), increase gradually the opening ratio of electronic thermostat.
On the other hand, if step S601 judgment result is that "No", control device judgement Q
heat releasewhether be greater than Q
cooling(step S602).If step S602 judgment result is that "Yes", process towards step S604 and advance, 8. perform an action (with reference to Fig. 9 (b)).In action 8., at TWN
actualwith TWN
targetdifference be Δ TWN while there is larger variation when t1 (in Fig. 9 (b)), first reduce gradually the opening ratio L of electronic thermostat
eThermo, then, at TWN
actualwith TWN
targetdifference be Δ TWN while being less than for example ± 1 ℃ when t2 (in Fig. 9 (b)), increase gradually the opening ratio of electronic thermostat.
On the other hand, if step S602 judgment result is that "No", process towards step S605 and advance, 9. perform an action (with reference to Fig. 9 (c)).In action 9., at TWN
actualwith TWN
targetdifference be Δ TWN while there is larger variation when t1 (in Fig. 9 (c)), first reduce gradually the opening ratio L of electronic thermostat
eThermo, then, at TWN
actualwith TWN
targetdifference be Δ TWN while being less than for example ± 1 ℃ when t2 (in Fig. 9 (c)), increase gradually the opening ratio of electronic thermostat.
By reference to the accompanying drawings the present invention is exemplarily described above, obvious specific implementation of the present invention is not subject to the restriction of above-mentioned mode of execution.
In the above-described embodiment, described motor thermal discharge calculating part 203 for example carrys out the thermal discharge of calculation engine according to engine speed, engine load, engine igniting time and oil-break cylinder number, but be not limited to this, described motor thermal discharge calculating part also can be only according to a few thermal discharges that carry out calculation engine of certain in engine speed, engine load, engine igniting time and oil-break cylinder number.
In the above-described embodiment, described engine cooling amount calculating part 204 for example carrys out the amount of cooling water of calculation engine according to the aperture of the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, described electronic thermostat and ambient temperature, but be not limited to this, described engine cooling amount calculating part also can be only according to a few amount of cooling water of carrying out calculation engine of certain in the aperture of the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, described electronic thermostat and ambient temperature.
Claims (4)
1. an engine system, comprise water pump for cooling water being delivered to motor, for cooling water being carried out to cooling radiator, for fan that radiator is blown, by the electronic thermostat that regulates opening ratio to regulate being delivered to the temperature of the cooling water of motor, it is characterized in that, also comprise the water temperature control device for controlling being delivered to the temperature of the cooling water of motor
Described water temperature control device comprises:
Engine target water temperature calculating part, this engine target water temperature calculating part is for calculating the target water temperature of the cooling water of inflow engine;
Motor actual water temperature detection unit, this motor actual water temperature detection unit is for detection of the actual water temperature of the cooling water of inflow engine;
Motor thermal discharge calculating part, this motor thermal discharge calculating part is thermal discharge for calculating the heat of present engine generation;
Engine cooling amount calculating part, it is amount of cooling water that this engine cooling amount calculating part is used for calculating present engine dispersed heat; And
Control device, this control device is poor according to described actual water temperature and described target water temperature, and poor according to described thermal discharge and described amount of cooling water, the rotating speed of the opening ratio of described electronic thermostat and described fan is unified to control, so that the difference of described actual water temperature and described target water temperature becomes 0.
2. engine system as claimed in claim 1, is characterized in that, described engine target water temperature calculating part calculates described target water temperature according to engine speed and engine load.
3. engine system as claimed in claim 1, is characterized in that, described motor thermal discharge calculating part, according to a plurality of amounts in engine speed, engine load, engine igniting time and oil-break cylinder number, calculates described thermal discharge.
4. engine system as claimed in claim 1, it is characterized in that, described engine cooling amount calculating part, according to a plurality of amounts in the aperture of the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, described electronic thermostat and ambient temperature, calculates described amount of cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025734.0A CN103711566B (en) | 2013-01-23 | 2013-01-23 | Engine system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025734.0A CN103711566B (en) | 2013-01-23 | 2013-01-23 | Engine system |
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|---|---|
| CN103711566A true CN103711566A (en) | 2014-04-09 |
| CN103711566B CN103711566B (en) | 2016-03-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481668A (en) * | 2014-10-21 | 2015-04-01 | 天津大学 | Electric water pump temperature control method for intelligent heat management for engine |
| CN107191359A (en) * | 2017-07-19 | 2017-09-22 | 启明天工（苏州）控制系统有限公司 | A kind of air compressor cooling means and system |
| CN109578129A (en) * | 2018-12-20 | 2019-04-05 | 东风汽车集团有限公司 | A kind of engine coolant temperature control system and method |
| WO2020151544A1 (en) * | 2019-01-24 | 2020-07-30 | 长城汽车股份有限公司 | Method and system for controlling electronic water pump of engine |
| CN112954944A (en) * | 2019-11-26 | 2021-06-11 | 中车大连电力牵引研发中心有限公司 | Vehicle-mounted converter thermal management system and method and vehicle-mounted converter |
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| WO2012147202A1 (en) * | 2011-04-28 | 2012-11-01 | トヨタ自動車株式会社 | Coolant temperature control apparatus for internal combustion engine |
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2013
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Patent Citations (4)
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| CN1598262A (en) * | 2003-09-20 | 2005-03-23 | 现代自动车株式会社 | Engine cooling system control apparatus for vehicles and method thereof |
| WO2012147202A1 (en) * | 2011-04-28 | 2012-11-01 | トヨタ自動車株式会社 | Coolant temperature control apparatus for internal combustion engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481668A (en) * | 2014-10-21 | 2015-04-01 | 天津大学 | Electric water pump temperature control method for intelligent heat management for engine |
| CN104481668B (en) * | 2014-10-21 | 2017-04-05 | 天津大学 | A kind of temperature-controlled process of engine intelligent heat management electric water pump |
| CN107191359A (en) * | 2017-07-19 | 2017-09-22 | 启明天工（苏州）控制系统有限公司 | A kind of air compressor cooling means and system |
| CN109578129A (en) * | 2018-12-20 | 2019-04-05 | 东风汽车集团有限公司 | A kind of engine coolant temperature control system and method |
| CN109578129B (en) * | 2018-12-20 | 2020-08-07 | 东风汽车集团有限公司 | Engine cooling water temperature control system and method |
| WO2020151544A1 (en) * | 2019-01-24 | 2020-07-30 | 长城汽车股份有限公司 | Method and system for controlling electronic water pump of engine |
| CN112954944A (en) * | 2019-11-26 | 2021-06-11 | 中车大连电力牵引研发中心有限公司 | Vehicle-mounted converter thermal management system and method and vehicle-mounted converter |
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| CN103711566B (en) | 2016-03-30 |
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Address after: Xinglong Street Suzhou City Industrial Park, 215126 No. 255 in Jiangsu Province Applicant after: Hitachi Automotive Systems (Suzhou) Co., Ltd. Address before: Xinglong Street Suzhou City Industrial Park, 215126 No. 255 in Jiangsu Province Applicant before: Hitachi Automobile Parts (Suzhou) Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HITACHI AUTOMOTIVE PARTS (SUZHOU) CO., LTD. TO: HITACHI AUTOMOTIVE SYSTEMS (SUZHOU) CO., LTD. |
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