CN1123875A - Automotive Cooling System with Feedback Control of Engine Water Pump Coolant Flow - Google Patents
Automotive Cooling System with Feedback Control of Engine Water Pump Coolant Flow Download PDFInfo
- Publication number
- CN1123875A CN1123875A CN 94118050 CN94118050A CN1123875A CN 1123875 A CN1123875 A CN 1123875A CN 94118050 CN94118050 CN 94118050 CN 94118050 A CN94118050 A CN 94118050A CN 1123875 A CN1123875 A CN 1123875A
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- CN
- China
- Prior art keywords
- coolant
- water pump
- engine
- cooling
- cooling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000001816 cooling Methods 0.000 title claims abstract description 56
- 239000002826 coolant Substances 0.000 title claims abstract description 53
- 239000000110 cooling liquid Substances 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000000809 air pollutant Substances 0.000 description 4
- 231100001243 air pollutant Toxicity 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The automobile cooling system with feedback control of engine water pump coolant flow is characterized by that it mainly utilizes the feedback control mode to regulate the rotation speed of electric water pump according to the signal transferred from sensor of water temp., throttle position and vehicle speed to ECU (microprocessor) so as to make the coolant flow in the engine water jacket be regulated according to different driving conditions to reduce emission of HC pollution.
Description
The invention provides a kind of electric water pump of feedback control, the coolant rate of cooling system during with automatic adjustment automobile running, and improve the automobile cooling system with feedback control engine pump coolant rate of automotive performance.
Present passenger vehicle, the commercial cooling means that the most generally adopts with automobile, it is a kind of water cooling system of four-stroke internal combustion engine, and this type of cooling is to the consumption of the minimizing of the comfortable feel of car steering, noise, exhaust, fuel, and automotive service life etc. all is difficult for reaching the required standards.Generally speaking, typical water cooling system is to utilize a kind of water and antifreezing solution mixture cooling liquid, adds the automobile radiators that a kind of rust resisting compound is protected aluminum in addition in this mixture.In addition, this antifreezing solution is a kind of water miscible liquid, the compound of glycol or similar glycol normally, and the content of this antifreezing solution can be up to the 30-50% of cooling liquid total volume, so that the boiling point of cooling liquid improves, and the effective temperature of cooling liquid is spent up to Celsius 120, in addition, the mobile of the cooling liquid of quartastroke engine is to finish with engine pump, and this engine pump is the drivign belt driving by engine driveshaft, and therefore the transmission speed of this mechanical pump is directly relevant with the transmission speed of motor.That is to say, when motor slowly rotates, the flow minimum of cooling liquid, and when motor during in high speed rotating, the flow maximum of cooling liquid, the temperature of cooling liquid is to be controlled by thermostat in addition, and this thermostat can detect the coolant temperature of the motor of flowing through, and the temperature of motor can be remained on good operational temperature by this.
See also shown in Figure 1, known automobile cooling system 10 includes a mechanical water pump 12, this pump 12 directly is connected with motor 14, and make cooling liquid 16 can be delivered to the water jacket of engine-cooling system, after cooling liquid is discharged from engine water jacket, enter a thermostat 18, this thermostat 18 can this cooling liquid of sensing temperature, if the temperature of this cooling liquid is too high, this cooling liquid promptly flows to the radiator 22 with cooling action along pipeline 20 and gets back to water pump 12 along pipeline 26 again, if the temperature of this cooling liquid is unlikely when too high, then cooling liquid directly is back to water pump 12 along pipeline 24.Because water pump 12 is driven by motor 14, therefore the running speed of this water pump 12 can change along with the RPM of motor, and when galloping, the running speed of this water pump 12 can produce higher cooling flow, but when automobile was reduced to low speed by high speed, the flow of cooling liquid can suddenly reduce.Therefore, the known engine cooling system has following shortcoming:
1. automobile is being run at high speed or automobile height when load (automobile carries a lot of people or thing), the motor of automobile can produce a large amount of heats, when this automobile suddenly by high deceleration to low speed or slowly the running speed the time, the flow of cooling liquid is die-offed (because the per minute rotating speed of motor lowers) and can not be taken away being stored in in-engine a large amount of heat, the result produces engine overheat, and makes motor be in condition of poor.
2. when motor starts under cold car situation first, because the temperature of motor is low, so the atomizing of gasoline and evaporate badly, this situation can cause gasoline imperfect combustion, and produces a large amount of air pollutant such as carbon monoxide and hydrocarbon.In addition, evidence show that also some engine part such as cylinder wear speed and engine temperature have direct relation, as shown in Figure 2, when cylinder wall temperature greatly when Celsius 65 spend between 80 degree Celsius, cylinder bore and wear of piston-rings degree are fierce to be increased.Therefore, at short notice the temperature of motor is brought up to suitable operating temperature, can avoid some important engine part is produced undue wear.
3. the operational temperature of motor can directly influence the interior water of the engine crank axle box problem of condensing, as shown in Figure 3, this figure shows the water condensation number in the crankcase and the relation of water jacket chilling temperature, as can be seen from the figure water condensation number and coolant temperature have linear relation, that is to say under high coolant temperature, the water condensation number little by little reduces, and can avoid condensing of water in the crankcase and lubricant oil is polluted causing serious engine scuffing problem.
In the engine operation temperature than in higher, the fuel consumption of automobile can be along with improvement, as shown in Figure 4, during 30 miles of speed per hours and 70 miles of speed per hours, the operational temperature of motor increases, the economic percentaeg of automotive fuel also can be along with improvement.Usually relatively good than higher engine operation temperature, but the engine operation temperature must remain on optimum temperature or be lower than optimum temperature, and this is that the generation of air pollutant nitrogen oxide can increase because under very high engine temperature.Therefore must accurately control engine operating temperature, and the generation of nitrogen oxide is controlled in optimum temperature.
In view of this, the present invention goes into then with its working experience for many years, finally grind and create a kind of automobile cooling system with feedback control engine pump coolant rate through constantly research, design, to improve the shortcoming of known cooling system, this is design aim of the present invention.
That is, main purpose of the present invention is to provide a kind of automobile cooling system with feedback control engine pump coolant rate, wherein, when this cooling system can make motor die-off to the slow-speed of revolution under the situation of high rotating speed or high capacity, abundant cooled engine still.
Another object of the present invention is to provide a kind of automobile cooling system with feedback control engine pump coolant rate, wherein, this cooling system can promptly improve engine operating temperature after cold car starts, impel motor to operate effectively.
Another purpose of the present invention is to provide a kind of automobile cooling system with feedback control engine pump coolant rate, wherein, the engine pump of this cooling system receives the feedback control signal of microprocessor and controls the flow of cooling liquid, so that reach the optimum operation situation.
A further object of the present invention is to provide a kind of automobile cooling system with feedback control engine pump coolant rate, wherein, the engine pump of this cooling system is controlled by the feedback signal of a microprocessor, and this microprocessor is by the sensor received signal, and this signal is the throttle position about motor per minute running speed, engine coolant temperature and motor.
Understand in depth for the present invention is had further, exemplify a preferred embodiment now, and conjunction with figs. explanation as back:
Fig. 1: the Block Diagram of known automobile cooling system
Fig. 2: the graph of a relation of automobile cylinder and upper piston ring wear extent and cylinder wall temperature
Fig. 3: the water graph of a relation with engine water jacket water temperature that condenses in the automobile crankcase
Fig. 4: the graph of a relation of vehicle fuel economy and engine water outlet temperature
Fig. 5: Block Diagram of the present invention
The present invention is various engine running parameter input microprocessors, the cooling requirement of this microprocessor decision motor, and the per minute running speed of control of pump decides coolant rate, parameter comprises motor per minute running speed, engine's throttling position, and the temperature of engine coolant.Microprocessor is sent output signal to engine pump then by the sensor receiving inputted signal, impels sufficient cooling liquid to circulate in motor, makes engine cooling.As shown in Figure 5, a kind of automobile cooling system 30 uses a kind of electric water pump 32 with feedback system control.As shown in the figure, the present invention utilizes an engine coolant temperature sensor 34, a throttle position sensor 36 and an engine speed sensor 38 are handled the automobile runs data with a situation microprocessor 40 of input (control unit of engine) of automobile running.Sensor 42 is used for other important automobile function situations of sensing, also can be used for after the additional Data Processing, one control signal is delivered to electric water pump 32, making this water pump control its rotational velocity does in suitable flow rates, this water pump 32 can be passed to cooling jacket with cooling liquid, this cooling jacket is around this motor 44, and cooling liquid is discharged and determined the temperature of this cooling liquid by thermostat 46 then.When the coolant temperature of discharging from motor 44 was quite high, the cooling liquid radiator (heat exchanger) 48 of flowing through descended the temperature of cooling liquid, sends this electric water pump 32 then back to.As shown in phantom in Figure 5, cooling-water temperature transmitter 34 and throttle position sensor 36 receive its signal from motor 44.The present invention can reduce the water jacket size, and this water jacket is used for cooled engine, and therefore, according to the present invention, the use amount of cooling liquid can reduce, and only needs less power to come this water jacket of the cooling liquid warp let-off.In addition, in the relatively shorter time, just can heat more a spot of cooling liquid, therefore in the relatively shorter time, can be engine warm-up to good operational temperature, and as long as the speed change electric water pump of flowing through of a cooling liquid fully, the efficient of motor can increase.
In addition, electric water pump is applicable to the reponse system of microprocessor control.Because electric water pump 32 can make motor 44 when slowly running, can reach high coolant rate, therefore, sufficient cooling action can be provided when motor 44 low speed, when automobile at a high speed or when operating under the high load condition because the relation of traffic congestion stops suddenly, the engine speed of this automobile descend and slowly running do not send strength, microprocessor senses is adjusted the cooling liquid liquid measure that improves electric water pump to various engine operation situations, with cooled engine.As shown in Figure 5, when cold car, start motor car engine 44, electric water pump 32 operates with the slow-speed of revolution, so only a spot of cooling liquid is in circulation, and cooling liquid is heated soon and make motor 44 reach operational temperature soon, and shorten cold car warm-up time and reduce the bad air pollutant carbon monoxide and the hydrocarbon of imperfect combustion generation.When automobile during at working at high speed, microprocessor 40 senses motor 44 speed, throttle position and coolant temperature, microprocessor at first determines the mode of this automobile running then, microprocessor 40 is regulated the per minute rotating speed of electric water pump 32 then, this adjusting is to finish by feedback control system, makes cooling liquid that suitable flow be arranged.(refer to radiator) in enclosed engine-cooling system, when motor during at high temperature, the expansion meeting of cooling liquid produces the pressure of 11-15Psi in this cooling system, and under this pressure, the boiling point of cooling liquid can reach 120 degree Celsius.Therefore and general motor relatively, the present invention can make motor reach than higher operational temperature, and can improve the combustion efficiency of motor.Simultaneously, exhaust can be controlled with EGR and Catalytic Converter, and pollutant one oxygen phenodiazine is reduced, and satisfies the regulation of automobile exhaust.The present invention adopts a kind of microprocessor to lower coolant rate, makes automobile can keep high cooling effect when working at high speed, perhaps when automobile low speed operates or slowly rotation is not sent strength, can increase coolant rate and keep low coolant temperature.
The present invention describes with embodiment, knows this operator and all can use mode of the present invention and implement other possible versions.For example, except electric water pump, other forms of water pump also can suitably be controlled coolant rate with the control system of feedback system.
Accordingly, the present invention mainly has following advantage:
1. engine can turn round when optimum temperature turns round very effectively: because engine Temperature must keep or be lower than the optimum operation temperature, affects to avoid the quick-fried generation of bad shake and starts The machine performance, and engine of the present invention can be installed littler water jacket, therefore uses than in a small amount cold But liquid gets final product the effective cooling engine.
2. engine starts when cold car, and its temperature can be increased to rapidly the optimal operation temperature: by In a small amount of cooling fluid being heated at short notice, therefore, the burning of fuel air mixture Can be improved, and air pollutants are reduced.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118050 CN1123875A (en) | 1994-12-03 | 1994-12-03 | Automotive Cooling System with Feedback Control of Engine Water Pump Coolant Flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118050 CN1123875A (en) | 1994-12-03 | 1994-12-03 | Automotive Cooling System with Feedback Control of Engine Water Pump Coolant Flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1123875A true CN1123875A (en) | 1996-06-05 |
Family
ID=5038648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118050 Pending CN1123875A (en) | 1994-12-03 | 1994-12-03 | Automotive Cooling System with Feedback Control of Engine Water Pump Coolant Flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1123875A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025109B (en) * | 2006-01-27 | 2010-11-03 | 通用汽车环球科技运作公司 | Method for designing an engine component temperature estimator |
| CN101160456B (en) * | 2005-11-02 | 2012-10-03 | 日立建机株式会社 | Cooling fan drive device for traveling working machine |
| CN102753798A (en) * | 2009-12-22 | 2012-10-24 | 雷诺股份公司 | Motor vehicle cooling device |
| CN107575286A (en) * | 2017-10-30 | 2018-01-12 | 潍柴动力股份有限公司 | A kind of cooling system and its control method applied to SCR catalytic mufflers |
| CN108662103A (en) * | 2018-07-21 | 2018-10-16 | 安吉元融仪器仪表检测有限公司 | The power transmission of vehicle water pump |
| CN109958608A (en) * | 2017-12-26 | 2019-07-02 | 长城汽车股份有限公司 | Speed changer cooling water pump control method, speed changer cooling system and vehicle |
-
1994
- 1994-12-03 CN CN 94118050 patent/CN1123875A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160456B (en) * | 2005-11-02 | 2012-10-03 | 日立建机株式会社 | Cooling fan drive device for traveling working machine |
| CN101025109B (en) * | 2006-01-27 | 2010-11-03 | 通用汽车环球科技运作公司 | Method for designing an engine component temperature estimator |
| CN102753798A (en) * | 2009-12-22 | 2012-10-24 | 雷诺股份公司 | Motor vehicle cooling device |
| CN102753798B (en) * | 2009-12-22 | 2014-07-23 | 雷诺股份公司 | Motor vehicle cooling device |
| CN107575286A (en) * | 2017-10-30 | 2018-01-12 | 潍柴动力股份有限公司 | A kind of cooling system and its control method applied to SCR catalytic mufflers |
| CN109958608A (en) * | 2017-12-26 | 2019-07-02 | 长城汽车股份有限公司 | Speed changer cooling water pump control method, speed changer cooling system and vehicle |
| CN108662103A (en) * | 2018-07-21 | 2018-10-16 | 安吉元融仪器仪表检测有限公司 | The power transmission of vehicle water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Publication of corrected invention patent application |
Correction item: Co-applicant Correct: Sanyang Industry Co., Ltd. False: Que Yige Number: 23 Page: The title page Volume: 12 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-APPLICANT; FROM: LACK ONE TO: SANYANG INDUSTRIAL CO., LTD. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |