CN212406913U - EGR and GMC compatible cooling system and vehicle - Google Patents
EGR and GMC compatible cooling system and vehicle Download PDFInfo
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- CN212406913U CN212406913U CN202020425540.5U CN202020425540U CN212406913U CN 212406913 U CN212406913 U CN 212406913U CN 202020425540 U CN202020425540 U CN 202020425540U CN 212406913 U CN212406913 U CN 212406913U
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Abstract
In order to overcome the problems of low cooling efficiency and influence on EGR rate and harmful gas emission of the existing EGR cooler, the utility model provides an EGR and GMC compatible cooling system and a vehicle, the EGR and GMC compatible cooling system comprises a cooling module, a radiator, a first circulating flow channel and a second circulating flow channel, the first circulating flow channel is respectively connected with the cooling module and the radiator, and the first circulating flow channel is used for conveying cooling liquid after the radiator is cooled to the cooling module; the second circulating flow passage is respectively connected with the cooling module and the radiator, the second circulating flow passage is used for conveying the cooling liquid heated by the cooling module to the radiator, and the cooling module comprises an EGR cooler and a GMC cooling system. The utility model provides a density and the temperature that EGR and GMC compatible cooling system can effectively reduce EGR gas improve the EGR rate, and then improve engine thermal efficiency, reduce oil consumption, reduce the emission, especially nitrogen oxide's emission.
Description
Technical Field
The utility model belongs to the technical field of vehicle structure, concretely relates to EGR and compatible cooling system of GMC and vehicle.
Background
An EGR (Exhaust Gas recirculation) system refers to a system in which a portion of Exhaust Gas discharged from an engine is returned to an intake manifold and Re-enters a cylinder together with fresh mixture. Because the waste gas contains a large amount of CO2Equal polyatomic gas, and CO2When the gas cannot be combusted, the gas absorbs a large amount of heat due to high specific heat capacity, so that the maximum combustion temperature of the gas mixture in the cylinder is reduced, and the generation amount of nitrogen oxides is reduced. The exhaust gas is required to be cooled before being led into an intake manifold, the existing exhaust gas cooling mode is to arrange an EGR cooler, the EGR cooler is connected in series with an engine cooling system, heat exchange is carried out in the EGR cooler by utilizing the flow of cooling liquid of the engine cooling system, and the temperature of the EGR gas is reduced, but the temperature of the engine cooling system after being warmed up is usually more than 90 ℃, so that the temperature of the EGR gas after being cooled is still overhigh, the EGR rate is limited, and the emission is influenced; the temperature after mixing with air is also higher, and is unfavorable for controlling the temperature in the cylinder, improving the compression ratio and controlling knocking, and influences the heat efficiency and oil consumption of the engine.
SUMMERY OF THE UTILITY MODEL
The cooling efficiency to current EGR cooler is low, influences the problem that EGR rate and harmful gas discharged, the utility model provides an EGR and compatible cooling system of GMC and vehicle.
The utility model provides an above-mentioned technical problem adopted technical scheme as follows:
on the one hand, an embodiment of the present invention provides an EGR and GMC compatible cooling system, which includes a cooling module, a radiator, a first circulation flow channel and a second circulation flow channel, wherein the first circulation flow channel is respectively connected to the cooling module and the radiator, and is used for conveying a cooling liquid after the radiator is cooled to the cooling module; the second circulation runner is connected respectively the cooling module with the radiator, the second circulation runner be used for with the coolant liquid after the cooling module intensifies is carried extremely the radiator, the cooling module includes EGR cooler and GMC cooling system, the EGR cooler is used for the exhaust gas cooling to vehicle exhaust gas recirculation system, GMC cooling system is used for the cooling of vehicle electromechanical coupling control system.
Optionally, the second circulation flow channel includes a first pipe segment and a second pipe segment, the first circulation flow channel is respectively communicated with the liquid outlet of the radiator and the liquid inlet of the EGR cooler, the first pipe segment is respectively communicated with the EGR cooler and the GMC cooling system, and the second pipe segment is respectively communicated with the GMC cooling system and the radiator.
Optionally, be provided with exhaust gas runner and liquid runner in the EGR cooler, the exhaust gas runner is used for vehicle exhaust gas recirculation, the exhaust gas runner with the liquid runner is in exchange heat in the EGR cooler, the inlet intercommunication of liquid runner first circulation runner, the liquid outlet intercommunication of liquid runner first pipeline section.
Optionally, the GMC cooling system comprises a generator cooling channel for cooling a housing and a rotor spindle of the generator; the liquid inlet of the generator cooling channel is communicated with the first pipe section, and the liquid outlet of the generator cooling channel is communicated with the second pipe section.
Optionally, the GMC cooling system includes a drive motor cooling channel for cooling a housing and a rotor spindle of the drive motor; and the liquid inlet of the driving motor cooling channel is communicated with the first pipe section, and the liquid outlet of the driving motor cooling channel is communicated with the second pipe section.
Optionally, the GMC cooling system includes a hydraulic module cooling channel, the hydraulic module cooling channel is used for exchanging heat with hydraulic oil of the hydraulic module, a liquid inlet of the hydraulic module cooling channel is communicated with the first pipe section, and a liquid outlet of the hydraulic module cooling channel is communicated with the second pipe section.
Optionally, a water pump is arranged on the first circulation flow channel, and the water pump is used for pumping the cooling liquid and supplying the cooling liquid to the cooling module.
Optionally, a water tank for temporarily storing the coolant is disposed on the first circulation flow channel, and the water tank is located at an upstream position of the water pump.
Optionally, the heat sink is an air heat sink.
In another aspect, an embodiment of the present invention provides a vehicle including an EGR and GMC compatible cooling system as described above.
According to the utility model provides a EGR and GMC compatible cooling system, change traditional EGR cooler's the mode that sets up, cooperate EGR cooler and GMC cooling system, utilize the microthermal nature of GMC cooling system, realize the cryogenic cooling to EGR gas in the EGR cooler, compare current mode, can effectively reduce EGR gas's density and temperature, improve the EGR rate, and then improve engine thermal efficiency, reduce the oil consumption, reduce the emission, especially nitrogen oxide's emission, on the other hand, through adding the EGR cooler, can further improve GMC cooling system's coolant liquid's utilization efficiency, effectively cool down vehicle electromechanical coupling control system, guarantee that vehicle electromechanical coupling control system is in stable operating mode at the vehicle operation in-process.
Drawings
FIG. 1 is a block schematic diagram of an EGR and GMC compatible cooling system provided by the present invention.
The reference numbers in the drawings of the specification are as follows:
1. a first circulation flow path; 2. a second circulation flow path; 21. a first tube section; 22. a second tube section; 3. a cooling module; 31. an EGR cooler; 32. a GMC cooling system; 4. a heat sink; 5. a water pump; 6. a water tank.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides an EGR and GMC compatible cooling system, including a cooling module 3, a radiator 4, a first circulation flow channel 1 and a second circulation flow channel 2, where the first circulation flow channel 1 is connected to the cooling module 3 and the radiator 4 respectively, and the first circulation flow channel 1 is used to deliver a coolant after cooling the radiator 4 to the cooling module 3; the second circulation flow channel 2 is connected respectively the cooling module 3 with the radiator 4, the second circulation flow channel 2 be used for with the coolant liquid after the cooling module 3 heaies up is carried extremely the radiator 4, the cooling module 3 includes EGR cooler 31 and GMC cooling system 32, EGR cooler 31 is used for the exhaust gas cooling to vehicle exhaust gas recirculation system, GMC cooling system 32 is used for the cooling of vehicle electromechanical coupling control system.
The EGR and GMC compatible cooling system is characterized in that the EGR cooler 31 and the GMC cooling system 32 are cooperated, and the low-temperature property of the GMC cooling system 32 is utilized to realize low-temperature cooling of EGR gas in the EGR cooler 31, compared with the existing mode, the temperature of the EGR gas can be effectively reduced, the density of the EGR gas is improved, the EGR rate is improved, the heat efficiency of an engine is improved, the oil consumption is reduced, the emission is reduced, especially the emission of nitrogen oxides, on the other hand, the utilization efficiency of cooling liquid of the GMC cooling system 32 can be further improved by adding the EGR cooler 31, the electromechanical coupling control system of the vehicle is effectively cooled, and the electromechanical coupling control system of the vehicle is ensured to be in a stable working condition in the vehicle operation process.
In one embodiment, the second circulation flow path 2 includes a first pipe segment 21 and a second pipe segment 22, the first circulation flow path 1 communicates with the liquid outlet of the radiator 4 and the liquid inlet of the EGR cooler 31, the first pipe segment 21 communicates with the EGR cooler 31 and the GMC cooling system 32, and the second pipe segment 22 communicates with the GMC cooling system 32 and the radiator 4.
The coolant in the first circulation flow channel 1 firstly enters the EGR cooler 31 to cool the vehicle exhaust gas recirculation system, the coolant after heat exchange by the EGR cooler 31 is guided to the GMC cooling system 32 through the first pipe segment 21, and the coolant after heat exchange by the GMC cooling system 32 is guided to the radiator 4 through the second pipe segment 22.
In an embodiment, an exhaust gas flow channel and a liquid flow channel are disposed in the EGR cooler 31, the exhaust gas flow channel is used for exhaust gas recirculation of a vehicle engine, specifically, the exhaust gas flow channel is respectively communicated with an exhaust manifold of the vehicle engine and an intake pipe of the engine, and is used for guiding part of exhaust gas of the exhaust manifold into the intake pipe of the engine, the liquid flow channel is used for coolant circulation, the exhaust gas flow channel and the liquid flow channel exchange heat with each other in the EGR cooler 31, a liquid inlet of the liquid flow channel is communicated with the first circulation flow channel 1, and a liquid outlet of the liquid flow channel is communicated with the first pipe section 21.
Specifically, the EGR cooler 31 may adopt various existing heat exchangers, such as a shell-and-tube heat exchanger, the exhaust gas channel and the liquid channel are respectively located on a shell side or a tube side to exchange heat with each other, and the exhaust gas channel and the liquid channel are not communicated with each other, so as to prevent pollutants in the exhaust gas channel from being dissolved in the coolant.
The vehicle Coupling electromechanical control system (GMC) is a vehicle control system and comprises a driving motor, an engine, a planetary gear mechanism, a clutch, a hydraulic module and a generator, the drive motor, the engine and the generator are driven by the planetary gear mechanism, the driving motor and the engine are used as driving sources, the clutch is used for connecting the generator, the hydraulic module is used for driving the movement of the clutch, under the hybrid driving mode of common driving of the engine and the driving motor, the rotating speed output by the planet carrier is continuously adjustable within a range through the speed regulation function of the planet gear mechanism on the engine, the engine rotating speed is matched, so that the engine always works in a high-efficiency interval, the optimal power state of the engine in the whole period is realized, and the power performance and the economical efficiency of the vehicle are improved.
In particular, the vehicle-coupled electromechanical control system may adopt an existing structure, such as the structure disclosed in patent CN209856328U or patent CN207328110U, which is well known to those skilled in the art.
In one embodiment, the GMC cooling system 32 includes generator cooling channels for cooling the housing and rotor spindle of the generator; the liquid inlet of the generator cooling channel is communicated with the first pipe section 21, and the liquid outlet of the generator cooling channel is communicated with the second pipe section 22.
Specifically, the generator cooling channel set up in the casing and the rotor dabber of generator can effectively reduce the casing and the rotor dabber temperature of generator, avoid the overheated situation to appear in the generator, improve generator operating stability.
In one embodiment, the GMC cooling system 32 includes drive motor cooling channels for cooling the housing and rotor spindle of the drive motor; the liquid inlet of the driving motor cooling channel is communicated with the first pipe section 21, and the liquid outlet of the driving motor cooling channel is communicated with the second pipe section 22.
Specifically, the driving motor cooling channel set up in driving motor's casing and rotor dabber for reduce driving motor's casing and rotor dabber temperature, avoid driving motor overheated situation to appear, improve driving motor operating stability.
In an embodiment, the GMC cooling system 32 includes a hydraulic module cooling channel, the hydraulic module cooling channel is used for exchanging heat with hydraulic oil of the hydraulic module, an inlet of the hydraulic module cooling channel is communicated with the first pipe section 21, and an outlet of the hydraulic module cooling channel is communicated with the second pipe section 22.
Specifically, the hydraulic module cooling channel is provided with a heat exchanger for exchanging heat with the hydraulic oil of the hydraulic module, and the temperature of the hydraulic oil is reduced by the cooling liquid of the hydraulic module cooling channel.
It should be noted that, in some embodiments, the generator cooling channel, the driving motor cooling channel, and the hydraulic module cooling channel are arranged in series with each other in a changeable position, and in an embodiment, the generator cooling channel, the driving motor cooling channel, and the hydraulic module cooling channel are sequentially connected in series, and the cooling liquid after heat exchange through the generator cooling channel is introduced into the driving motor cooling channel, and the cooling liquid after heat exchange through the driving motor cooling channel is introduced into the hydraulic module cooling channel. In other embodiments, the generator cooling channel, the driving motor cooling channel, and the hydraulic module cooling channel are disposed in parallel between the first pipe segment 21 and the second pipe segment 22, and the cooling fluid flowing in through the first pipe segment 21 is branched to the generator cooling channel, the driving motor cooling channel, and the hydraulic module cooling channel and then is respectively led out by the second pipe segment 22.
In an embodiment, a water pump 5 is disposed on the first circulation flow channel 1, the coolant in the first circulation flow channel 1 is in a low temperature state after being radiated by the heat sink 4, the water pump 5 is disposed on the first circulation flow channel 1, so that the corrosion of the high-temperature coolant to the water pump 5 can be avoided, the water pump 5 is used for extracting the coolant and supplying the coolant to the cooling module 3, and mechanical energy is converted into kinetic energy of the coolant through rotation of an impeller of the water pump 5.
In some embodiments, a water tank 6 for temporarily storing the coolant is disposed on the first circulation flow channel 1, the water tank 6 is located at an upstream position of the water pump 5, and an air overflow window is provided for the coolant in the system through the water tank 6, and a supplement of the coolant is provided for the water pump 5, so that cavitation of the water pump 5 is avoided, and the reliability of the operation of the water pump 5 is increased.
In some embodiments, the radiator 4 is an air radiator, and the radiator 4 is disposed in a ventilation position, for example, in some embodiments, the radiator 4 is disposed in a front cabin of a vehicle, and air entering through a ventilation opening of the front cabin of the vehicle exchanges heat. In other embodiments, the radiator may be disposed in other ventilating locations of the vehicle, such as the vehicle bottom.
Another embodiment of the present invention provides a vehicle including an EGR and GMC compatible cooling system as described above.
By adopting the EGR and GMC compatible cooling system, the temperature of the waste gas in the EGR cooler 31 is effectively reduced, the temperature of the mixed waste gas and air is further reduced, the temperature in the cylinder body of the engine is favorably controlled, the EGR rate is improved, the emission of nitrogen oxides is reduced, and the heat efficiency of the engine is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The EGR and GMC compatible cooling system is characterized by comprising a cooling module, a radiator, a first circulating flow channel and a second circulating flow channel, wherein the first circulating flow channel is respectively connected with the cooling module and the radiator, and is used for conveying cooling liquid obtained after the radiator is cooled to the cooling module; the second circulation runner is connected respectively the cooling module with the radiator, the second circulation runner be used for with the coolant liquid after the cooling module intensifies is carried extremely the radiator, the cooling module includes EGR cooler and GMC cooling system, the EGR cooler is used for the exhaust gas cooling to vehicle engine exhaust gas recirculation system, GMC cooling system is used for the cooling of vehicle electromechanical coupling control system.
2. The EGR-and-GMC-compatible cooling system of claim 1 wherein the second circulation flow path comprises a first tube segment and a second tube segment, the first circulation flow path communicating with the liquid outlet of the radiator and the liquid inlet of the EGR cooler, respectively, the first tube segment communicating with the EGR cooler and the GMC cooling system, respectively, and the second tube segment communicating with the GMC cooling system and the radiator, respectively.
3. The EGR and GMC compatible cooling system of claim 2 wherein an exhaust gas flow passage and a liquid flow passage are provided in the EGR cooler, the exhaust gas flow passage being for vehicle exhaust gas recirculation, the exhaust gas flow passage and the liquid flow passage being heat exchanged in the EGR cooler, an inlet of the liquid flow passage communicating with the first circulation flow passage, and an outlet of the liquid flow passage communicating with the first tube segment.
4. The EGR and GMC compatible cooling system according to claim 2 comprising a generator cooling channel for cooling a housing and a rotor spindle of a generator; the liquid inlet of the generator cooling channel is communicated with the first pipe section, and the liquid outlet of the generator cooling channel is communicated with the second pipe section.
5. The EGR and GMC compatible cooling system of claim 2 or 4, wherein the GMC cooling system comprises a drive motor cooling channel for cooling a housing and a rotor spindle of a drive motor; and the liquid inlet of the driving motor cooling channel is communicated with the first pipe section, and the liquid outlet of the driving motor cooling channel is communicated with the second pipe section.
6. The EGR and GMC compatible cooling system of claim 2 comprising a hydraulic module cooling channel for exchanging heat with hydraulic oil of a hydraulic module, an inlet port of the hydraulic module cooling channel communicating with the first tube section and an outlet port of the hydraulic module cooling channel communicating with the second tube section.
7. The EGR-GMC compatible cooling system according to claim 1, wherein a water pump is provided on the first circulation flow passage, the water pump being configured to pump the coolant and supply the coolant to the temperature decreasing module.
8. The EGR-and-GMC-compatible cooling system according to claim 7, wherein a water tank for temporary storage of the coolant is provided on the first circulation flow passage, the water tank being located at an upstream position of the water pump.
9. The EGR and GMC compatible cooling system of claim 1 wherein the radiator is an air radiator.
10. A vehicle comprising an EGR and GMC compatible cooling system according to any one of claims 1 to 9.
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| CN202020425540.5U CN212406913U (en) | 2020-03-27 | 2020-03-27 | EGR and GMC compatible cooling system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446136A (en) * | 2020-03-27 | 2021-09-28 | 广州汽车集团股份有限公司 | EGR and GMC compatible cooling system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113446136A (en) * | 2020-03-27 | 2021-09-28 | 广州汽车集团股份有限公司 | EGR and GMC compatible cooling system and vehicle |
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