CN209083392U - A kind of vehicle and its engine-cooling system - Google Patents
A kind of vehicle and its engine-cooling system Download PDFInfo
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- CN209083392U CN209083392U CN201821919780.XU CN201821919780U CN209083392U CN 209083392 U CN209083392 U CN 209083392U CN 201821919780 U CN201821919780 U CN 201821919780U CN 209083392 U CN209083392 U CN 209083392U
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Abstract
The utility model discloses a kind of vehicle and its engine-cooling system, which includes cooling water radiator and the EGR cooling line for being exclusively used in cooling EGR exhaust；The water outlet of the water inlet connection cooling water radiator of EGR cooling line, water outlet are connected to the water inlet end of cooling water radiator；Cooler for recycled exhaust gas and electric water pump are provided on EGR cooling line；The engine-cooling system further includes the controller for adjusting electric water pump revolving speed.When the engine-cooling system works, the revolving speed of electric water pump can be adjusted by controller, change the heat exchange amount of cooler for recycled exhaust gas, matched with controlling the current working of EGR exhaust temperature after cooling and engine, also, others will not be needed to have an impact using heat exchange amount of the cooling water to the load component that the medium flowed in it cools down.
Description
Technical field
The utility model relates to technical field of vehicle, more particularly to a kind of vehicle and its engine-cooling system.
Background technique
EGR is gas recirculation system, and a part of exhaust gas for cylinder to be discharged conveys air return cylinder again, this
Portion is known as EGR exhaust.EGR exhaust is mixed with the combustible gas in cylinder, can be reduced burning velocity and temperature, be reached and subtract
The purpose of the production quantity of few combustion process nitrogen oxides protects environment to reduce exhaust gas to the pollution level of atmosphere.
It needs first to be cooled down before EGR exhaust conveying air return cylinder, therefore, engine-cooling system, which can be generally arranged, to be used for
The cooler for recycled exhaust gas of cooling EGR exhaust.But in practical application, it is found that existing engine-cooling system is generally existing cold through its
But EGR exhaust temperature and the unmatched problem of engine operating condition after.
EGR exhaust temperature after cooling it is excessively high or it is too low all can to engine generate adverse effect.If EGR after cooling
Exhaust gas temperature is excessively high, will lead to engine combustion variation, declines engine power, influence the power performance of vehicle；If cooling
EGR exhaust temperature afterwards is too low, be easy cooler for recycled exhaust gas inside and be set to cooler for recycled exhaust gas downstream EGR valve inside
Gum deposit is generated, the blocking of cooler for recycled exhaust gas and EGR valve is will lead to after long-time use, influences the normal operation of EGR.
In view of this, how to develop a kind of engine-cooling system, can evade through its EGR exhaust temperature after cooling
Too high or too low problem is spent, is those skilled in the art's technical issues that need to address.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of engine-cooling system, the engine cool system
System includes cooling water radiator and the EGR cooling line for being exclusively used in cooling EGR exhaust；The water inlet of the EGR cooling line connects
Lead to the water outlet of the cooling water radiator, water outlet is connected to the water inlet end of the cooling water radiator；The EGR cooling line
On be provided with cooler for recycled exhaust gas and electric water pump；The engine-cooling system further includes for adjusting the electric water pump revolving speed
Controller.
Engine-cooling system provided by the utility model when work, flows through the EGR exhaust of cooler for recycled exhaust gas and flows through EGR
The cooling water of cooler mutually exchanges heat, and achievees the purpose that reduce EGR exhaust temperature.
When engine operating condition changes, which can adjust turning for electric water pump by controller
Speed makes the cooling water inflow for flowing into EGR cooling line increase or reduce, and correspondingly, the heat exchange amount in cooler for recycled exhaust gas also increases therewith
More or reduction, it is possible thereby to which EGR exhaust temperature after cooling to be adjusted to the EGR exhaust temperature model of present engine duty requirements
In enclosing.
Also, since EGR cooling line is exclusively used in the cooling of EGR exhaust, thus, EGR cooling is flowed into when increasing or reducing
It, will not be to other load components that need to cool down to the medium flowed in it using cooling water when the cooling water inflow of pipeline
Heat exchange amount have an impact.
Optionally, the engine-cooling system further includes systemic circulation cooling line, the systemic circulation cooling line into
The mouth of a river is connected to the water outlet of the cooling water radiator, and water outlet is connected to the water inlet end of the cooling water radiator；
Feed pump, engine and thermostat are provided on the systemic circulation cooling line, the feed pump draws cooling water
Enter the systemic circulation cooling line, the thermostat has a main valve, and cooling water flows through after the water jacket of the engine through the master
Valve is back to the cooling water radiator.
Optionally, the feed pump is driven by the crankshaft of the engine.
Optionally, the thermostat also has by-passing valve, and the engine-cooling system further includes partial circulating cooling line,
The water inlet of the partial circulating cooling line is connected to the by-passing valve, and water outlet is connected to the water inlet end of the water jacket of the engine,
And warm wind component is provided on the partial circulating cooling line.
Optionally, the engine-cooling system further includes cooling branch, described in the water inlet connection of the cooling branch
Systemic circulation cooling line and connectivity part are located at the upstream position of the engine, water outlet be connected to the cooling water radiator into
Water end (W.E.)；And the cooling branch road is provided with engine oil cooler and gearbox oil cooler.
Optionally, the EGR cooling line and the systemic circulation cooling line reversed arrangement, make the EGR cooling line
Cooling water flow direction in interior cooling water flow direction and the systemic circulation cooling line is opposite.
Optionally, check valve is additionally provided on the EGR cooling line.
Optionally, the engine-cooling system further includes the temperature sensing for detecting EGR exhaust temperature after cooling
Device；The temperature sensor is communicated with the controller, and the corresponding EGR of Different Work Condition of Engine is preset in the controller
Exhaust gas temperature range；
When the controller judges that EGR exhaust temperature after cooling is corresponding higher than the engine current working described
When EGR exhaust temperature range, Xiang Suoshu electric water pump sends raising speed instruction；When the controller judges EGR exhaust after cooling
When temperature is lower than the engine current working corresponding EGR exhaust temperature range, Xiang Suoshu electric water pump sends reduction of speed
Instruction.
In addition, the utility model also provides a kind of vehicle, the vehicle includes engine cool described in any of the above embodiments
System.
The beneficial effect of the vehicle is consistent with the beneficial effect of above-mentioned engine-cooling system, no longer repeats herein.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of specific embodiment of engine-cooling system provided by the utility model.
The reference numerals are as follows in Fig. 1:
1 cooling water radiator；
2 EGR cooling lines, 21 electric water pumps, 22 cooler for recycled exhaust gas, 23 check valves；
3 systemic circulation cooling lines, 31 feed pumps, 32 engines, 33 thermostats；
4 partial circulating cooling lines, 41 warm wind components；
5 cooling branches, 51 engine oil coolers, 52 gearbox oil coolers.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
Referring to FIG. 1, Fig. 1 is a kind of structural frames of specific embodiment of engine-cooling system provided by the utility model
Figure.
As shown in Figure 1, engine-cooling system provided by the utility model includes cooling water radiator 1 and is exclusively used in cooling down
The EGR cooling line 2 of EGR exhaust.The water inlet of the EGR cooling line 2 is connected to the water outlet of the cooling water radiator 1,
Water outlet is connected to the water inlet end of the cooling water radiator 1.Cooler for recycled exhaust gas 22 and electronic is provided on the EGR cooling line 2
Water pump 21.Also, the engine-cooling system further includes the controller for adjusting 21 revolving speed of electric water pump.
Wherein, EGR cooling line 2 is exclusively used in the cooling of EGR exhaust, that is to say, that flows through the cooling of EGR cooling line 2
Heat exchange occurs for the EGR exhaust that water was only used for and flowed through cooler for recycled exhaust gas 22, it is understood that is to be arranged on EGR cooling line 2
Need to carry out cooling load component to the medium flowed in it using cooling water to be only cooler for recycled exhaust gas 22.
Wherein, cooler for recycled exhaust gas 22 can be various forms of heat exchangers.For example, can be set to shell-and-tube heat exchanger, and
It is connected to its tube side with EGR exhaust channel, i.e., is passed through EGR exhaust in tube side, be connected to its shell side with EGR cooling line 2, i.e. shell
Cooling water is passed through in journey.
As illustrated by the arrows in fig. 1, engine-cooling system provided by the utility model, when work, cooling water is electronic
It is flowed out under the action of water pump 21 from the water outlet of cooling water radiator 1, into EGR cooling line 2, cocurrent is set in EGR
Cooler for recycled exhaust gas 22 on cooling line 2 mutually exchanges heat with the EGR exhaust for flowing through cooler for recycled exhaust gas 22, keeps EGR exhaust cooling cold
But.Cooling water after heat exchange is flowed out from cooler for recycled exhaust gas 22, and is back to cooling water radiator 1 and is carried out radiating and cooling.
When 32 operating condition of engine changes, which can adjust electric water pump 21 by controller
Revolving speed, make flow into EGR cooling line 2 cooling water inflow increase or reduce, correspondingly, the heat exchange amount in cooler for recycled exhaust gas 22
Also increase or reduce therewith, it is possible thereby to which EGR exhaust temperature after cooling to be adjusted to the EGR of 32 current working demand of engine
Within the scope of exhaust gas temperature.
Also, since EGR cooling line 2 is exclusively used in the cooling of EGR exhaust, thus, EGR cooling is flowed into when increasing or reducing
It, will not be to other load portions that need to cool down to the medium flowed in it using cooling water when the cooling water inflow of pipeline 2
The heat exchange amount of part has an impact.
Specifically, the corresponding EGR exhaust temperature range of the different operating conditions of engine 32 is preset in above controller.Also,
Engine-cooling system provided by the utility model further includes the temperature sensor for detecting EGR exhaust temperature after cooling,
The temperature sensor is in communication with each other with above controller, and the controller is made to adjust stream in real time according to EGR exhaust temperature after cooling
Cooling water inflow through cooler for recycled exhaust gas 22.
Wherein, the corresponding EGR exhaust temperature range of the different operating conditions of engine 32 be in 32 actual moving process of engine,
The parameters such as revolving speed, load, cooling water temperature and EGR exhaust temperature after cooling by monitoring engine 32, and to these
Parameter carries out calibration acquisition.
Wherein, the specific adjustment process of controller are as follows:
Controller receives the EGR exhaust temperature signal that detects of temperature sensor, and by EGR exhaust temperature after cooling with
The corresponding EGR exhaust temperature range of 32 operating condition of present engine compares, if it is useless to be higher than the corresponding EGR of 32 operating condition of present engine
Maximum temperature value in gas temperature range then determines that EGR exhaust temperature is excessively high；If corresponding lower than 32 operating condition of present engine
Lowest temperature angle value in EGR exhaust temperature range then determines that EGR exhaust temperature is too low；
When controller determines EGR exhaust after cooling when the temperature is excessively high, Xiang Shangshu electric water pump 21 sends raising speed instruction, makes
The cooling water inflow for flowing through cooler for recycled exhaust gas 22 increases；When controller judges that EGR exhaust temperature after cooling is too low, to above-mentioned electricity
Dynamic water pump 21 sends reduction of speed instruction, and the cooling water inflow for flowing through cooler for recycled exhaust gas 22 is reduced.Reduction of speed instruction and raising speed instruction are specific
It can be the instruction of change voltage signal.
Further, engine-cooling system provided by the utility model further includes systemic circulation cooling line 3 and partial circulating
Cooling line 4.
Specifically, the water inlet of the systemic circulation cooling line 3 is connected to the water outlet of above-mentioned cooling water radiator 1, water outlet
The water inlet end of mouth connection cooling water radiator 1, that is to say, that the systemic circulation cooling line 3 and above-mentioned EGR cooling line 2 are simultaneously
Connection.
Also, be provided with feed pump 31 on the systemic circulation cooling line 3, the feed pump 31 by engine 32 crankshaft band
It is dynamic.
Also, engine 32 and thermostat 33 are additionally provided on the systemic circulation cooling line 3.Specifically, engine 32
With cooling water jacket, engine 32 is set on systemic circulation cooling line 3, it is understood that is the water jacket of engine 32
It is connected to systemic circulation cooling line 3.Specifically, thermostat 33 has main valve and by-passing valve, and thermostat 33 is set to systemic circulation
On cooling line 3, it is understood that be that the main valve of thermostat 33 is connected to systemic circulation cooling line 3.
Specifically, the water inlet of the partial circulating cooling line 4 is connected to the by-passing valve of above-mentioned thermostat 33, and water outlet connects
The water inlet end of the water jacket of logical engine 32, also, warm wind component 41 is provided on the partial circulating cooling line 4.
The specific course of work are as follows:
When 32 running temperature of engine is higher, the main valve of thermostat 33 is opened, and by-passing valve is closed, and makes systemic circulation cooling tube
Road 3 is in the conductive state, and partial circulating cooling line 4 is in close state.
At this point, as shown by the arrows in Figure 1, cooling water is under the action of feed pump 31 from the water outlet of cooling water radiator 1
Outflow, enters in systemic circulation cooling line 3, and flow through the water jacket of engine 32, takes away the partial heat of engine 32, make to send out
Motivation 32 is cooling.Later, the cooling water for flowing through engine 32 is back in cooling water radiator 1 through the main valve of thermostat 33 to carry out
Heat dissipation, continues to put into next circulation after heat dissipation.When being recycled in systemic circulation cooling line 3 due to cooling water, dissipated through supercooled water
Hot device 1 radiates, and keeps the temperature of cooling water relatively low, so as to so that in the unlikely working environment in overheat of engine 32.
When 32 running temperature of engine is lower, the main valve of thermostat 33 is closed, and by-passing valve is opened, and makes partial circulating cooling tube
Road 4 is in the conductive state, and systemic circulation cooling line 3 is in close state.
At this point, as shown by the arrows in Figure 1, cooling water flows into partial circulating cooling line 4 through the by-passing valve of thermostat 33,
And warm wind component 41 is flowed through, it mutually exchanges heat with the air for flowing through warm wind component 41, makes atmosphere temperature rising, cooling water temperature.Later, it flows
The cooling water for crossing warm wind component 41 flows into the water jacket of engine 32, to cool down engine 32.Since cooling water is cold in partial circulating
But it in pipeline 4 when circulation, radiates without cooling water radiator 1, so as to make to send out so that the temperature of cooling water is unlikely to too low
In the unlikely working environment in supercooling of motivation 32.
Further, engine-cooling system provided by the utility model further includes cooling branch 5.
Specifically, the water inlet of the cooling branch 5 is connected to above-mentioned systemic circulation cooling line 3 and connectivity part is located at engine 32
Upstream position, water outlet be connected to cooling water radiator 1 water inlet end.Also, it is cold to be provided with engine oil on the cooling branch 5
Device 51 and gearbox oil cooler 52.
At this point, as shown by the arrows in Figure 1, the cooling water flowed into systemic circulation cooling line 3 is flowing into engine 32
It before water jacket, partially branches on the cooling branch 5, and flow through engine oil cooler 51 and gearbox oil cooler 52, is sent out with flowing through
The lubricating oil of motivation oil cooler 51 and gearbox oil cooler 52 mutually exchanges heat, and makes lubricating oil cooling down.Later, engine is flowed through
The cooling water of oil cooler 51 and gearbox oil cooler 52 is back to cooling water radiator 1 and carries out radiating and cooling.
Further, as shown, EGR cooling line 2 and 3 reversed arrangement of systemic circulation cooling line, make EGR cooling line
Cooling water flow direction (being counterclockwise in figure) in 2 and the cooling water flow direction in systemic circulation cooling line 3 (are clockwise in figure
Direction) it is opposite.So set, the cooling effect to EGR exhaust can be further increased.
Further, it is additionally provided with check valve 23 on above-mentioned EGR cooling line 2, for preventing cooling water in above-mentioned master
It is reversely flowed into EGR cooling line 2 under the action of water pump 31 from the water outlet of EGR cooling line 2.In a particular embodiment, institute
State the downstream that check valve 23 is set to above-mentioned cooler for recycled exhaust gas 22.
In addition, the utility model also provides a kind of vehicle, which includes above-mentioned engine-cooling system.
Vehicle provided by the utility model and its engine-cooling system are described in detail above.It answers herein
The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides
Assistant solves the method and its core concept of the utility model.It should be pointed out that for those skilled in the art,
Without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these improvement
It is also fallen into the protection scope of the utility model claims with modification.
Claims (9)
1. a kind of engine-cooling system, which is characterized in that the engine-cooling system include cooling water radiator (1) and specially
For cooling down the EGR cooling line (2) of EGR exhaust；The water inlet of the EGR cooling line (2) is connected to the cooling water-cooled
The water outlet of device (1), water outlet are connected to the water inlet end of the cooling water radiator (1)；It is arranged on the EGR cooling line (2)
There are cooler for recycled exhaust gas (22) and electric water pump (21)；The engine-cooling system further includes for adjusting the electric water pump
(21) controller of revolving speed.
2. engine-cooling system according to claim 1, which is characterized in that the engine-cooling system further includes big
Circulating cooling pipeline (3), the water inlet of the systemic circulation cooling line (3) are connected to the water outlet of the cooling water radiator (1),
Water outlet is connected to the water inlet end of the cooling water radiator (1)；
Feed pump (31), engine (32) and thermostat (33), the feed pump are provided on the systemic circulation cooling line (3)
(31) cooling water is introduced into the systemic circulation cooling line (3), the thermostat (33) has main valve, and cooling water flows through the hair
The cooling water radiator (1) is back to through the main valve after the water jacket of motivation (32).
3. engine-cooling system according to claim 2, which is characterized in that the feed pump (31) is by the engine
(32) crankshaft drives.
4. engine-cooling system according to claim 2, which is characterized in that the thermostat (33) also has bypass
Valve, the engine-cooling system further include partial circulating cooling line (4), and the water inlet of the partial circulating cooling line (4) connects
Lead to the by-passing valve, water outlet is connected to the water inlet end of the water jacket of the engine (32), and on the partial circulating cooling line (4)
It is provided with warm wind component (41).
5. engine-cooling system according to claim 2, which is characterized in that the engine-cooling system further includes cold
But the water inlet of branch (5), the cooling branch (5) is connected to the systemic circulation cooling line (3) and connectivity part is located at the hair
The upstream position of motivation (32), water outlet are connected to the water inlet end of the cooling water radiator (1)；And the cooling branch (5)
On be provided with engine oil cooler (51) and gearbox oil cooler (52).
6. according to the described in any item engine-cooling systems of claim 2-5, which is characterized in that the EGR cooling line (2)
With systemic circulation cooling line (3) reversed arrangement, flows to the cooling water in the EGR cooling line (2) and followed greatly with described
Cooling water flow direction in ring cooling line (3) is opposite.
7. engine-cooling system according to claim 6, which is characterized in that also set up on the EGR cooling line (2)
There are check valve (23).
8. engine-cooling system according to claim 1-5, which is characterized in that the engine-cooling system
It further include the temperature sensor for detecting EGR exhaust temperature after cooling；The temperature sensor is communicated with the controller,
And the corresponding EGR exhaust temperature range of the different operating conditions of the engine (32) is preset in the controller；
When the controller judges that EGR exhaust temperature after cooling is corresponding higher than the engine (32) current working described
When EGR exhaust temperature range, Xiang Suoshu electric water pump (21) sends raising speed instruction；When the controller judges EGR after cooling
When exhaust gas temperature is lower than the engine (32) current working corresponding EGR exhaust temperature range, Xiang Suoshu electric water pump
(21) reduction of speed instruction is sent.
9. a kind of vehicle, which is characterized in that the vehicle includes the described in any item engine-cooling systems of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919780.XU CN209083392U (en) | 2018-11-20 | 2018-11-20 | A kind of vehicle and its engine-cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919780.XU CN209083392U (en) | 2018-11-20 | 2018-11-20 | A kind of vehicle and its engine-cooling system |
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| Publication Number | Publication Date |
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| CN209083392U true CN209083392U (en) | 2019-07-09 |
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| CN201821919780.XU Active CN209083392U (en) | 2018-11-20 | 2018-11-20 | A kind of vehicle and its engine-cooling system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439664A (en) * | 2019-07-10 | 2019-11-12 | 重庆小康工业集团股份有限公司 | A kind of cooling system of automobile engine |
| CN113006923A (en) * | 2021-04-14 | 2021-06-22 | 一汽解放汽车有限公司 | Engine cooling system and vehicle |
| CN114109667A (en) * | 2021-12-14 | 2022-03-01 | 浙江吉利控股集团有限公司 | EGR cooler water flow control method, device, equipment and storage medium |
| CN115306535A (en) * | 2022-10-12 | 2022-11-08 | 潍柴动力股份有限公司 | Control method and device for speed-regulating water pump, electronic equipment and storage medium |
| CN115506880A (en) * | 2022-10-31 | 2022-12-23 | 长城汽车股份有限公司 | Control method and device for electronic water pump of engine, storage medium and vehicle |
-
2018
- 2018-11-20 CN CN201821919780.XU patent/CN209083392U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439664A (en) * | 2019-07-10 | 2019-11-12 | 重庆小康工业集团股份有限公司 | A kind of cooling system of automobile engine |
| CN110439664B (en) * | 2019-07-10 | 2020-10-23 | 重庆小康工业集团股份有限公司 | Cooling system of automobile engine |
| CN113006923A (en) * | 2021-04-14 | 2021-06-22 | 一汽解放汽车有限公司 | Engine cooling system and vehicle |
| CN114109667A (en) * | 2021-12-14 | 2022-03-01 | 浙江吉利控股集团有限公司 | EGR cooler water flow control method, device, equipment and storage medium |
| CN114109667B (en) * | 2021-12-14 | 2023-11-14 | 浙江吉利控股集团有限公司 | EGR cooler water flow control method, device, equipment and storage medium |
| CN115306535A (en) * | 2022-10-12 | 2022-11-08 | 潍柴动力股份有限公司 | Control method and device for speed-regulating water pump, electronic equipment and storage medium |
| CN115506880A (en) * | 2022-10-31 | 2022-12-23 | 长城汽车股份有限公司 | Control method and device for electronic water pump of engine, storage medium and vehicle |
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