CN103711566B - Engine system - Google Patents
Engine system Download PDFInfo
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- CN103711566B CN103711566B CN201310025734.0A CN201310025734A CN103711566B CN 103711566 B CN103711566 B CN 103711566B CN 201310025734 A CN201310025734 A CN 201310025734A CN 103711566 B CN103711566 B CN 103711566B
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- engine
- water temperature
- cooling
- motor
- calculating part
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Abstract
The invention provides a kind of engine system that can improve speed of response in the cooling water temperature control of motor, improve control accuracy.Engine system of the present invention comprises water temperature control device, and this water temperature control device comprises: for calculating the engine target water temperature calculating part of the target water temperature of the cooling water of inflow engine; For detecting the motor actual water temperature detection unit of the actual water temperature of the cooling water of inflow engine; For calculating the heat and the motor thermal discharge calculating part of thermal discharge that present engine produces; For calculating the engine cooling amount calculating part of present engine dispersed heat and amount of cooling water; And control device, this control device is according to the difference of described actual water temperature and described target water temperature, and according to the difference of described thermal discharge and described amount of cooling water, unify to control to the opening ratios of described electronic thermostat and the rotating speed of described fan, become 0 to make the difference of described actual water temperature and described target water temperature.
Description
Technical field
The present invention relates to engine system.
Background technique
Engine system generally includes chilled(cooling) water return (CWR), arranges the water pump being used for cooling water being delivered to motor, the radiator being used for cooling the cooling water of discharging from motor, is used for the fan of blowing to radiator, the electronic thermostat regulated by the temperature of adjustment opening ratios to the cooling water being delivered to motor in chilled(cooling) water return (CWR).
In traditional engine system, for the cooling water of set point of temperature is delivered to motor, usually only utilize electronic thermostat to carry out the control of water temperature closed-loop feedback, namely the opening ratios of electronic thermostat is determined according to the difference of cooling water true temperature and cooling water target temperature, when cooling water true temperature is higher than cooling water target temperature, increase the opening ratios of electronic thermostat to make more cooling water inflow engine after flowing through radiator, and when cooling water true temperature is lower than cooling water target temperature, the opening ratios reducing electronic thermostat flows directly into motor to make more cooling water when not flowing through radiator.
But, because closed-loop feedback controls the problem that there is 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 provides a kind of engine system that can improve speed of response in the cooling water temperature control of motor, improve control accuracy.
To achieve these goals, the engine system of the present invention the 1st aspect comprise water pump for cooling water being delivered to motor, the radiator that is used for cooling cooling water, the fan being used for blowing to radiator, electronic thermostat by regulating the temperature of opening ratios to the cooling water being delivered to motor to regulate.The engine system of the present invention the 1st aspect also comprises the water temperature control device for controlling the temperature of the cooling water being delivered to 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 detecting the actual water temperature of the cooling water of inflow engine; Motor thermal discharge calculating part, this motor thermal discharge calculating part is for calculating heat and the thermal discharge of present engine generation; Engine cooling amount calculating part, this engine cooling amount calculating part is for calculating present engine dispersed heat and amount of cooling water; And control device, this control device is according to the difference of described actual water temperature and described target water temperature, and according to the difference of described thermal discharge and described amount of cooling water, unify to control to the opening ratios of described electronic thermostat and the rotating speed of described fan, become 0 to make the difference of described actual water temperature and described target water temperature.
The engine system of the present invention the 2nd aspect is that on the basis of the engine system in the present invention the 1st, 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 in the present invention the 1st, described motor thermal discharge calculating part, according to the multiple 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 in the present invention the 1st, described engine cooling amount calculating part, according to the multiple amounts in the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, the aperture of described electronic thermostat and ambient temperature, calculates described amount of cooling water.
According to engine system of the present invention, because control device is according to the difference of actual water temperature and target water temperature, and according to the difference of described thermal discharge and described amount of cooling water, unify to control to the opening ratios of electronic thermostat and the rotating speed of fan, 0 is become to make the difference of actual water temperature and target water temperature, therefore can improve speed of response in the cooling water temperature control of motor, and can control accuracy be improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the structure representing engine system of the present invention.
Fig. 2 is the schematic diagram of the structure of the water temperature control device representing engine system of the present invention.
Fig. 3 is the flow chart of an example of the motion flow of the water temperature control device representing engine system of the present invention.
Fig. 4 is the flow chart of an example of the motion flow of the water temperature control device representing engine system of the present invention.
Fig. 5 be represent engine system of the present invention the action performed by water temperature control device 1. ~ flow chart 3., wherein, Fig. 5 (a) represents that action is 1., and Fig. 5 (b) represents that action is 2., and Fig. 5 (c) represents that action is 3..
Fig. 6 is the flow chart of an example of the motion flow of the water temperature control device representing engine system of the present invention.
Fig. 7 be represent engine system of the present invention the action performed by water temperature control device 4. ~ flow chart 6., wherein, Fig. 7 (a) represents that action is 4., and Fig. 7 (b) represents that action is 5., and Fig. 7 (c) represents that action is 6..
Fig. 8 is the flow chart of an example of the motion flow of the water temperature control device representing engine system of the present invention.
Fig. 9 be represent engine system of the present invention the action performed by water temperature control device 7. ~ flow chart 9., wherein, Fig. 9 (a) represents that action is 7., and Fig. 9 (b) represents that action is 8., and Fig. 9 (c) represents that action is 9..
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
First, according to Fig. 1, Fig. 2, the engine system 1 of present embodiment and the basic structure of water temperature control device 2 thereof are 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, the radiator R of the air-supply of fan F and electronic thermostat ET is utilized to connect into ring-type, wherein, described water pump WP is used for cooling water to be delivered to motor E, described radiator R makes the cooling water of discharging from motor E and air carry out heat exchange and cool cooling water, described electronic thermostat ET is by regulating opening ratios to make more cooling water at inflow engine after flowing through radiator or to make more cooling water flow directly into motor when not flowing through radiator (when opening ratios is 0, the cooling water flowing into electronic thermostat ET all flows directly into motor when not flowing through radiator, along with the increase of opening ratios, flow into the cooling water inflow engine after flowing through radiator more and more of electronic thermostat ET), thus the temperature of the cooling water flowing into motor E is regulated.
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 detecting 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 and thermal discharge, described engine cooling amount calculating part 204 is for calculation engine dispersed heat and amount of cooling water, described control device 205 is according to the difference of described actual water temperature and described target water temperature, and according to the difference of described thermal discharge and described amount of cooling water, unify to control to the opening ratios of described electronic thermostat ET and the rotating speed of described fan, 0 is become to make the difference of described actual water temperature and described target water temperature.
At this, described engine target water temperature calculating part 201 such as 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 such as 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 such as carrys out the amount of cooling water of calculation engine according to the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, the aperture of described electronic thermostat and ambient temperature.
Then, be described 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.
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, utilizes motor thermal discharge calculating part 203 to calculate heat and the thermal discharge Q of present engine generation
heat release(step S2), and utilize engine cooling amount calculating part 204 to calculate present engine dispersed heat and amount of cooling water Q
cooling(step S3).
Then, control device 205 judges described target water temperature TWN
targetwhether be greater than the actual water temperature TWN utilizing motor actual water temperature detection unit 202 to detect
actual(step S4).When the judged result of step S4 is "Yes", processes and advance towards by control 1 described below.
On the other hand, when the judged result of step S4 is "No", control device judges described target water temperature TWN
targetwhether equal described actual water temperature TWN
actual(step S5).When the judged result of step S5 is "Yes", processes and advance towards by control 2 described below.
On the other hand, when the judged result of step S5 is "No", control device is judged as described target water temperature TWN
targetbe less than described actual water temperature TWN
actual, process is advanced towards by control 3 described below.
According to Fig. 4, Fig. 5, control 1 is described below.
[controlling 1]
In step S401, control device judges Q
heat releasewhether equal Q
coolingif the judged result of step S401 is "Yes", then processes and advance towards step S403,1. perform an action (with reference to Fig. 5 (a)).In action 1., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 5 (a) start fan immediately, then, reduce rotation speed of the fan N gradually
rFANand make the opening ratios L of electronic thermostat
eThermoincrease gradually from initial openings ratio, then, when Δ TWN is less than such as ± 1 DEG C when t2 () in Fig. 5 (a), reduces the opening ratios of electronic thermostat gradually and make it return to initial openings ratio.
On the other hand, if the judged result of step S401 is "No", then control device judges Q
heat releasewhether be greater than Q
cooling(step S402).If the judged result of step S402 is "Yes", then processes and advance towards step S404,2. perform an action (with reference to Fig. 5 (b)).In action 2., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 5 (b) start fan immediately, then, reduce rotation speed of the fan N gradually
rFANand make the opening ratios L of electronic thermostat
eThermoincrease gradually from initial openings ratio.
On the other hand, if the judged result of step S402 is "No", then processes and advance towards step S405,3. perform an action (with reference to Fig. 5 (c)).In action 3., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 5 (c) start fan immediately, and make the rotating speed N of fan
rFANreduce gradually.In addition, the opening ratios L of electronic thermostat is initially maintained
eThermoconstant, then, when Δ TWN is less than such as ± 1 DEG C when t2 () in Fig. 5 (c), reduce the opening ratios of electronic thermostat gradually.
According to Fig. 6, Fig. 7, control 2 is described below.
[controlling 2]
In step S501, control device judges Q
heat releasewhether equal Q
coolingif the judged result of step S501 is "Yes", then processes and advance towards step S503,4. perform an action (with reference to Fig. 7 (a)), namely do not operate.
On the other hand, if the judged result of step S501 is "No", then control device judges Q
heat releasewhether be greater than Q
cooling(step S502).If the judged result of step S502 is "Yes", then processes and advance towards step S504,5. perform an action (with reference to Fig. 7 (b)).In action 5., start fan immediately, then, reduce rotation speed of the fan N gradually
rFANand make the opening ratios L of electronic thermostat
eThermoincrease gradually from initial openings ratio.
On the other hand, if the judged result of step S502 is "No", then processes and advance towards step S505,6. perform an action (with reference to Fig. 7 (c)).In action 6., reduce the opening ratios L of electronic thermostat gradually
eThermo.
According to Fig. 8, Fig. 9, control 3 is described below.
[controlling 3]
In step s 601, control device judges Q
heat releasewhether equal Q
coolingif the judged result of step S601 is "Yes", then processes and advance towards step S603,7. perform an action (with reference to Fig. 9 (a)).In action 7., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 9 (a), first reduce the opening ratios L of electronic thermostat gradually
eThermo, then, at TWN
actualwith TWN
targetdifference and Δ TWN when being less than such as ± 1 DEG C when t2 () in Fig. 9 (a), increase the opening ratios of electronic thermostat gradually.
On the other hand, if the judged result of step S601 is "No", then control device judges Q
heat releasewhether be greater than Q
cooling(step S602).If the judged result of step S602 is "Yes", then processes and advance towards step S604,8. perform an action (with reference to Fig. 9 (b)).In action 8., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 9 (b), first reduce the opening ratios L of electronic thermostat gradually
eThermo, then, at TWN
actualwith TWN
targetdifference and Δ TWN when being less than such as ± 1 DEG C when t2 () in Fig. 9 (b), increase the opening ratios of electronic thermostat gradually.
On the other hand, if the judged result of step S602 is "No", then processes and advance towards step S605,9. perform an action (with reference to Fig. 9 (c)).In action 9., at TWN
actualwith TWN
targetdifference and Δ TWN when there is larger change when t1 () in Fig. 9 (c), first reduce the opening ratios L of electronic thermostat gradually
eThermo, then, at TWN
actualwith TWN
targetdifference and Δ TWN when being less than such as ± 1 DEG C when t2 () in Fig. 9 (c), increase the opening ratios of electronic thermostat gradually.
Above by reference to the accompanying drawings to invention has been exemplary description, obvious specific implementation of the present invention is not by the restriction of above-mentioned mode of execution.
In the above-described embodiment, described motor thermal discharge calculating part 203 such as 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 thereto, described motor thermal discharge calculating part also can only according to certain in engine speed, engine load, engine igniting time and oil-break cylinder number a few come the thermal discharge of calculation engine.
In the above-described embodiment, described engine cooling amount calculating part 204 such as carrys out the amount of cooling water of calculation engine according to the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, the aperture of described electronic thermostat and ambient temperature, but be not limited thereto, described engine cooling amount calculating part also can only according to certain in the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, the aperture of described electronic thermostat and ambient temperature a few come the amount of cooling water of calculation engine.
Claims (4)
1. an engine system, the radiator comprise the water pump for cooling water being delivered to motor, being used for cooling cooling water, the fan being used for blowing to radiator, electronic thermostat by regulating the temperature of opening ratios to the cooling water being delivered to motor to regulate, it is characterized in that, also comprise the water temperature control device for controlling the temperature of the cooling water being delivered to 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 detecting the actual water temperature of the cooling water of inflow engine;
Motor thermal discharge calculating part, this motor thermal discharge calculating part is for calculating heat and the thermal discharge of present engine generation;
Engine cooling amount calculating part, this engine cooling amount calculating part is for calculating present engine dispersed heat and amount of cooling water; And
Control device, this control device is according to the difference of described actual water temperature and described target water temperature, and according to the difference of described thermal discharge and described amount of cooling water, unify to control to the opening ratios of described electronic thermostat and the rotating speed of described fan, become 0 to make the difference of described actual water temperature and described target water temperature.
2. engine system as claimed in claim 1, it 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, it is characterized in that, described motor thermal discharge calculating part, according to the multiple 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 the multiple amounts in the rotating speed of the rotating speed of the speed of a motor vehicle, described fan, described water pump, the aperture of 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025734.0A CN103711566B (en) | 2013-01-23 | 2013-01-23 | Engine system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711566A CN103711566A (en) | 2014-04-09 |
| CN103711566B true CN103711566B (en) | 2016-03-30 |
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| CN201310025734.0A Expired - Fee Related CN103711566B (en) | 2013-01-23 | 2013-01-23 | Engine system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107191359B (en) * | 2017-07-19 | 2019-08-30 | 启明天工（苏州）控制系统有限公司 | A kind of air compressor cooling means and system |
| 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 |
| CN110805487B (en) * | 2019-01-24 | 2020-10-27 | 长城汽车股份有限公司 | Control method and system for electronic water pump of engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102182540A (en) * | 2011-05-27 | 2011-09-14 | 重庆长安汽车股份有限公司 | Engine cooling system and temperature control method of cooling liquid thereof |
| CN102562255A (en) * | 2012-01-16 | 2012-07-11 | 宁波市鄞州德来特技术有限公司 | Engine and cooling system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2703617A4 (en) * | 2011-04-28 | 2015-06-24 | Toyota Motor Co Ltd | Coolant temperature control apparatus for internal combustion engine |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102182540A (en) * | 2011-05-27 | 2011-09-14 | 重庆长安汽车股份有限公司 | Engine cooling system and temperature control method of cooling liquid thereof |
| CN102562255A (en) * | 2012-01-16 | 2012-07-11 | 宁波市鄞州德来特技术有限公司 | Engine and cooling system thereof |
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| CN103711566A (en) | 2014-04-09 |
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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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Granted publication date: 20160330 Termination date: 20190123 |