CN216617668U - Engine supercharging system and car - Google Patents
Engine supercharging system and car Download PDFInfo
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- CN216617668U CN216617668U CN202122932245.6U CN202122932245U CN216617668U CN 216617668 U CN216617668 U CN 216617668U CN 202122932245 U CN202122932245 U CN 202122932245U CN 216617668 U CN216617668 U CN 216617668U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model provides an engine supercharging system and an automobile. The engine supercharging system also comprises a three-way valve and a bypass valve; the air inlet pipeline comprises a main pipeline, a first air inlet branch and a second air inlet branch, the electronic supercharger is arranged on the first air inlet branch, and the bypass valve is arranged on the second air inlet branch. The three-way valve is arranged on the exhaust gas circulation pipeline, and the first port of the three-way valve is arranged on one side, far away from the engine, of the exhaust gas recirculation device. The exhaust gas circulation pipeline comprises a first circulation branch and a second circulation branch. Therefore, the electronic supercharger is effectively combined with the exhaust gas recirculation device, so that the heat efficiency of the engine can be improved, the external characteristics of the engine can be improved, the amount of exhaust gas which participates in the circulating combustion again can be increased, the exhaust emission of the engine is reduced, and the exhaust emission regulation is met.
Description
Technical Field
The utility model belongs to the technical field of automobile hybrid engines, and particularly relates to an engine supercharging system and an automobile.
Background
With the continuous reduction of the oil consumption of the engine and the stricter emission regulations, the development of hybrid engines has become the mainstream of the market, and the engines sacrifice part of the external characteristics due to the pursuit of the economical efficiency of oil consumption. Therefore, the application of both supercharging and EGR (Exhaust Gas recirculation) technologies is increasing.
In the prior art, hybrid engines are mainly classified into naturally aspirated engines and supercharged engines. The low-pressure EGR of the naturally aspirated engine generally absorbs exhaust gas after catalysis of a catalyst, and the gas pressure is low due to gas extraction after catalysis, and after the exhaust gas is introduced into a throttle valve, pressure difference is formed by vacuum of the throttle valve, so that the introduction of the exhaust gas is realized. After adopting electronic supercharger, electronic supercharger can intervene according to the engine work condition selectivity of difference, and when the booster intervened, gas pressure after being the booster pressure was higher, and waste gas can't be irritated, if change waste gas access position, waste gas can't access again when the booster did not intervene. Current EGR is difficult to use perfectly in conjunction with an electronic supercharger.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that after an electronic supercharger is adopted in an engine system in the prior art, the gas with increased pressure is not beneficial to reunion of low-pressure waste gas treated by a waste gas recirculation system, and the emission of waste gas is increased.
In order to solve the above problems, an embodiment of the present invention discloses an engine supercharging system, which includes an air inlet pipeline, an engine, an air outlet pipeline, an exhaust gas recirculation device, and an electronic supercharger, wherein the air inlet pipeline, the engine, and the air outlet pipeline are sequentially connected, the air outlet pipeline includes an exhaust gas recirculation pipeline, the exhaust gas recirculation device is disposed on the exhaust gas recirculation pipeline, and the electronic supercharger is disposed on the air inlet pipeline; the engine supercharging system also comprises a three-way valve and a bypass valve; the air inlet pipeline comprises a main pipeline, a first air inlet branch and a second air inlet branch, the first air inlet branch and the second air inlet branch are connected in parallel and are respectively connected at two ends, one end of the main pipeline is connected with the engine, and the other end of the main pipeline is connected with the first air inlet branch and the second air inlet branch; the electronic supercharger is arranged on the first air inlet branch, and the bypass valve is arranged on the second air inlet branch; the three-way valve is arranged on the exhaust gas circulation pipeline, and a first port of the three-way valve is arranged on one side of the exhaust gas recirculation device, which is far away from the engine; the exhaust gas circulation pipeline comprises a first circulation branch and a second circulation branch, one end of the first circulation branch is connected with the second port of the three-way valve, the other end of the first circulation branch is connected with the first air inlet branch and located on one side, away from the main pipeline, of the electronic supercharger, one end of the second circulation branch is connected with the third port of the three-way valve, and the other end of the second circulation branch is connected with the main pipeline.
By adopting the scheme, the engine supercharging system is provided with the three-way valve, the electronic supercharger and the bypass valve, the air inlet pipeline is provided with the first air inlet branch and the second air inlet branch, and the exhaust gas circulation pipeline is provided with the first circulation branch and the second circulation branch; the flow direction of the exhaust gas and the fresh air generated by the combustion of the engine in the pipeline can be changed by changing the opening and closing states of the three-way valve, the electronic supercharger and the bypass valve.
The system can close the bypass valve and open the electronic supercharger according to the requirement working condition of the vehicle when the system needs the intervention of the electronic supercharger, the first port and the second port of the three-way valve are communicated, low-pressure waste gas enters the first gas inlet branch through the first circulating branch to form mixed gas with fresh gas, and then the mixed gas is input into an engine for combustion after being supercharged through the electronic supercharger. When the system does not need the intervention of the electronic supercharger, the electronic supercharger is closed, the bypass valve is opened, the first port and the third port of the three-way valve are communicated, and low-pressure waste gas is mixed with fresh air entering from the second air inlet branch through the second circulation branch and then is input into the engine for combustion. Therefore, the electronic supercharger is effectively combined with the exhaust gas recirculation device, the intervention condition of the electronic supercharger can be controlled according to the requirement working condition of the vehicle, and after the electronic supercharger is adopted in the system, the exhaust gas can be smoothly mixed with the fresh air, so that the heat efficiency of the engine can be improved, the external characteristics of the engine can be improved, the amount of the exhaust gas which participates in the circulating combustion again can be increased, the exhaust emission of the engine can be reduced, and the exhaust emission regulation of the exhaust gas can be met.
According to another embodiment of the present invention, an engine supercharging system is disclosed in which the exhaust gas recirculation device includes an exhaust gas recirculation valve and an exhaust gas recirculation cooler arranged in this order from the engine side.
By adopting the technical scheme, in the process of guiding the exhaust gas discharged by the combustion of the engine into the combustion chamber of the engine for combustion, the exhaust gas recirculation valve can control the quantity of the recycled exhaust gas, so that a certain quantity of exhaust gas flows into the combustion chamber for combustion. Moreover, because the temperature of the exhaust gas generated after the combustion in the engine combustion chamber is particularly high, if the high-temperature exhaust gas is directly circulated into the engine combustion chamber for combustion, the temperature and the pressure in the engine combustion chamber can be greatly increased again. Therefore, after a part of the exhaust gas is recovered by the exhaust gas recirculation valve, it is necessary to perform a temperature reduction process on the exhaust gas by the exhaust gas recirculation cooler and burn the exhaust gas after the temperature reduction again. The working efficiency of the engine is effectively improved, the load of the engine is lightened, and the emission of harmful substances in the waste gas is reduced.
According to another specific embodiment of the utility model, the engine supercharging system disclosed by the embodiment of the utility model is further provided with an electronic throttle valve on the main pipeline.
By adopting the technical scheme, the gas quantity entering the engine can be effectively and accurately controlled according to the working state of the engine by controlling the opening of the electronic throttle valve.
According to another embodiment of the utility model, in the engine supercharging system disclosed in the embodiment of the utility model, the other end of the second circulation branch is arranged on one side, close to the engine, of the electronic throttle valve on the main pipeline.
Adopt above-mentioned technical scheme, set up the other end of second circulation branch road in the one side that the electronic throttle valve is close to the engine on the main pipeline, the waste gas of being convenient for through exhaust gas recirculation device processing can not need the booster to carry out the pressure boost when, can get into the engine fast high-efficiently and burn.
According to another specific embodiment of the utility model, the engine supercharging system disclosed in the embodiment of the utility model, the air inlet pipeline further comprises an air filter, and the air filter is arranged on one side of the connecting ends of the first air inlet branch and the second air inlet branch, which are far away from the main pipeline, and is used for filtering fresh air.
Adopt above-mentioned technical scheme, set up air cleaner on the intake pipe way, can filter the dust of suspension in the air before the air admission engine burning, avoided during dust gets into the piston and the cylinder of engine, reduced the wearing and tearing of engine piston group and cylinder effectively.
According to another specific embodiment of the utility model, the engine supercharging system disclosed by the embodiment of the utility model further comprises a catalyst, and the catalyst is arranged on the air outlet pipeline and is positioned between the engine and the exhaust gas circulation pipeline.
Adopt above-mentioned technical scheme, install the catalyst converter on the outlet pipeline, can convert most harmful substance in the waste gas that the engine burning produced into innoxious substance, make final exhaust waste gas satisfy the emission regulation of waste gas.
According to another specific embodiment of the utility model, the engine supercharging system disclosed by the embodiment of the utility model is characterized in that the main pipeline further comprises an intake manifold, and the intake manifold is connected with the engine; the air outlet pipeline further comprises an air outlet manifold, and the air outlet manifold is arranged between the engine and the catalyst.
By adopting the technical scheme, the air inlet manifold and the air outlet manifold are divided into the plurality of branches, so that an independent air inlet pipe and an independent air outlet pipe can be provided for each cylinder of the engine, and the air can conveniently enter the engine and the waste gas can conveniently leave the engine.
According to another specific embodiment of the utility model, the utility model further discloses an automobile which comprises the engine supercharging system described in the embodiment.
The utility model has the beneficial effects that: the engine supercharging system is provided with a three-way valve, an electronic supercharger and a bypass valve, a first air inlet branch and a second air inlet branch are arranged on an air inlet pipeline, and a first circulating branch and a second circulating branch are arranged on an exhaust gas circulating pipeline; the flow direction of the exhaust gas and the fresh air generated by the combustion of the engine in the pipeline can be changed by changing the opening and closing states of the three-way valve, the electronic supercharger and the bypass valve.
The system can close the bypass valve and open the electronic supercharger according to the requirement working condition of the vehicle when the system needs the electronic supercharger to intervene, the first port and the second port of the three-way valve are communicated, low-pressure waste gas enters the first air inlet branch to form mixed gas with fresh air through the first circulating branch, and then the mixed gas is input into the engine for combustion after being supercharged through the electronic supercharger. When the system does not need the intervention of the electronic supercharger, the electronic supercharger is closed, the bypass valve is opened, the first port and the third port of the three-way valve are communicated, and low-pressure waste gas is mixed with fresh air entering from the second air inlet branch through the second circulation branch and then is input into the engine for combustion. Therefore, the technical scheme of the project effectively combines the electronic supercharger with the exhaust gas recirculation device, can control the intervention condition of the electronic supercharger according to the requirement working condition of the vehicle, and can smoothly mix the exhaust gas with the fresh air after the electronic supercharger is adopted by the system, thereby not only improving the heat efficiency of the engine and improving the external characteristics of the engine, but also increasing the amount of the exhaust gas which participates in the circular combustion again, reducing the exhaust emission of the engine and meeting the exhaust emission regulation.
Drawings
FIG. 1 is a schematic illustration of an engine boosting system provided by an embodiment of the present invention;
FIG. 2 is an engine out map of an engine boosting system provided by an embodiment of the present invention under two operating conditions.
Description of reference numerals:
1: an air intake line;
101: a main pipeline; 102: a first air intake branch; 103: a second air intake branch;
2: an engine;
3: an air outlet pipeline;
4: an exhaust gas recirculation device;
401: an exhaust gas recirculation valve; 402: an exhaust gas recirculation cooler;
5: an electronic supercharger;
6: an exhaust gas circulation line;
601: a first circulation branch; 602: a second circulation branch;
7: a three-way valve;
8: a bypass valve;
9: an electronic throttle valve;
10: an air filter;
11: a catalyst;
12: an intake manifold;
13: an outlet manifold.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the utility model will be described in conjunction with the preferred embodiments, it is not intended that the features of the utility model be limited to these embodiments. On the contrary, the intention of the novel description to be incorporated into the embodiments is to cover alternatives or modifications which may be extended in accordance with the appended claims. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The utility model may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are only used for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In order to solve the problem that after an electronic supercharger is adopted in an engine system in the prior art, the gas with increased pressure is not beneficial to remixing the low-pressure waste gas treated by an EGR system, and the emission of the waste gas is increased. The utility model provides an engine supercharging system, which can adjust the path of the recovered exhaust gas in the system to participate in combustion again according to different working conditions of an engine.
Specifically, referring to fig. 1 and 2, the engine supercharging system provided by the present invention is described in detail.
As shown in fig. 1, the engine supercharging system provided by the utility model comprises an air inlet pipeline 1, an engine 2, an air outlet pipeline 3, an exhaust gas recirculation device 4 and an electronic supercharger 5. The air inlet pipeline 1, the engine 2 and the air outlet pipeline 3 are connected in sequence. And the outlet line 3 includes an exhaust gas circulation line 6, as shown in fig. 1, an exhaust gas recirculation device 4 is provided on the exhaust gas circulation line 6, and an electronic supercharger 5 is provided on the inlet line 1. When the engine supercharging system works, gas enters the engine 2 from the air inlet pipeline 1, part of waste gas after being combusted by the engine 2 enters the air inlet pipeline 1 again through the waste gas circulating pipeline 6, is mixed with the gas which is not combusted, and enters the engine 2 again for combustion.
The engine supercharging system also comprises a three-way valve 7 and a bypass valve 8.
The intake line 1 comprises a main line 101, a first intake branch 102 and a second intake branch 103. As shown in fig. 1, the first air intake branch 102 is connected in parallel with the second air intake branch 103, and the first air intake branch 102 and the second air intake branch 103 are connected in parallel and then join at both ends, forming a main line 101. One end of the main line 101 is connected to the engine 2, and the other end is connected to the first intake branch 102 and the second intake branch 103. During the combustion process of the gas entering the engine 2, the gas will eventually enter the main pipe 101, whether from the first intake branch 102 or the second intake branch 103. The electronic supercharger 5 is arranged on the first air intake branch 102 and is used for performing supercharging control on the gas entering the first air intake branch 102; a bypass valve 8 is provided in the second intake branch 103 for controlling the gas entering the second intake branch 103.
A three-way valve 7 is provided on the exhaust gas recirculation line 6, and a first port of the three-way valve 7 is provided on a side of the exhaust gas recirculation device 4 remote from the engine 2. I.e. to the right of the exhaust gas recirculation device 4 shown in fig. 1. The three-way valve 7 is employed here because the flow direction of the gas entering the three-way valve 7 can be changed by adjusting the communication manner of the ports of the three-way valve 7.
Further, the exhaust gas circulation pipeline 6 includes a first circulation branch 601 and a second circulation branch 602, one end of the first circulation branch 601 is connected to the second port of the three-way valve 7, the other end of the first circulation branch 601 is connected to the first air inlet branch 102 and is located on one side of the electronic supercharger 5 away from the main pipeline 101, one end of the second circulation branch 602 is connected to the third port of the three-way valve 7, and the other end of the second circulation branch 602 is connected to the main pipeline 101.
Specifically, whether the exhaust gas enters the first circulation branch 601 or the second circulation branch 602 is selected according to the actual operating conditions of the vehicle. When the external characteristic of the vehicle is generally required at this time, the electronic supercharger 5 is in a closed state according to the working condition, the first port and the third port of the three-way valve 7 are communicated at this time, and the exhaust gas directly enters the second circulation branch 602. The gas that has not been combusted passes through the second intake branch 103, and the exhaust gas is mixed with the gas and directly enters the engine 2 for combustion. When the vehicle demands high external characteristics, the gas to be burned into the engine 2 is also required to have a relatively high pressure. At this time, the electronic supercharger 5 is in an open state, the first port and the second port of the three-way valve 7 are communicated, the exhaust gas enters the first circulation branch 601, the gas which is not combusted enters the first air intake branch 102, is mixed with the exhaust gas, passes through the electronic supercharger 5, and then enters the engine 2 for combustion. The gas entering the engine 2 at this time has a relatively high pressure, enabling the vehicle to have good external characteristics.
It should be noted that a three-way valve may not be used in order to allow exhaust gas to enter the intake pipe 1 from a different circulation pipe and be combusted again. But divides the exhaust gas recirculation line 6 after the exhaust gas recirculation device 4 into a first recirculation branch 601 and a second recirculation branch 602. And a first control valve is installed on the first circulation branch 601, a second control valve is installed on the second circulation branch 602, and the flow direction of the exhaust gas in the exhaust gas circulation pipeline 6 is adjusted by controlling the opening and closing states of the first control valve and the second control valve according to the actual working conditions of the vehicle.
As shown in fig. 2, the engine external characteristic diagram of the engine supercharging system under the natural air suction condition and the electronic supercharging condition is shown.
As shown in fig. 2, in the case of the same exhaust gas recovery rate of the exhaust gas recirculation device 4, the same engine speed, under the electronic supercharging condition, produces an engine torque that is significantly greater than the engine torque under the natural suction condition, and the engine 2 has good external characteristics, and at the same time, effective circulation combustion of the exhaust gas is also achieved.
By adopting the scheme, the three-way valve 7, the electronic supercharger 5 and the bypass valve 8 are arranged in the engine supercharging system, the first air inlet branch 102 and the second air inlet branch 103 are arranged on the air inlet pipeline 1, and the first circulating branch 601 and the second circulating branch 602 are arranged on the exhaust gas circulating pipeline 6; by changing the open and close states of the three-way valve 7, the electronic supercharger 5, and the bypass valve 8, the flow direction of the exhaust gas and the fresh air generated by the combustion of the engine 2 in the pipe can be changed.
According to the system, when the system needs the intervention of the electronic supercharger 5 according to the requirement working condition of a vehicle, the bypass valve 8 is closed, the electronic supercharger 5 is opened, the first port and the second port of the three-way valve 7 are communicated, low-pressure waste gas enters the first air inlet branch 102 through the first circulating branch 601 to form mixed gas with fresh air, and the mixed gas is pressurized through the electronic supercharger 5 and then is input into the engine 2 for combustion. When the system does not need the intervention of the electronic supercharger 5, the electronic supercharger 5 is closed, the bypass valve 8 is opened, the first port and the third port of the three-way valve 7 are communicated, and low-pressure exhaust gas is mixed with fresh air entering from the second air inlet branch 103 through the second circulation branch 602 and then is input to the engine 2 for combustion. Therefore, the technical scheme of the project effectively combines the electronic supercharger 5 with the exhaust gas recirculation device 4, can control the intervention condition of the electronic supercharger 5 according to the requirement working condition of the vehicle, and can smoothly mix the exhaust gas with the fresh air after the electronic supercharger 5 is adopted by the system, thereby not only improving the heat efficiency of the engine 2 and improving the external characteristics of the engine 2, but also increasing the amount of the exhaust gas which participates in the circulating combustion again, reducing the exhaust emission of the engine and meeting the exhaust emission regulation.
Further, in the engine supercharging system according to the embodiment of the present invention, the exhaust gas recirculation device 4 includes an exhaust gas recirculation valve 401 and an exhaust gas recirculation cooler 402 which are provided in this order from the engine 2 side.
Wherein, exhaust gas recirculation valve 401 and exhaust gas recirculation cooler 402 are all set up on exhaust gas recirculation pipeline 6, as shown in fig. 1, the exhaust gas that engine 2 burns and produces discharges through gas outlet pipeline 3, and in the exhaust process, exhaust gas recirculation pipeline 6 can circulate recovery burning to a part of exhaust gas. The egr valve 401 can control the amount of the exhaust gas to be recycled, and can flow a certain amount of the exhaust gas into the combustion chamber to be combusted. Moreover, because the temperature of the exhaust gas generated after the combustion in the engine combustion chamber is particularly high, if the high-temperature exhaust gas directly circulates into the engine combustion chamber for combustion, the temperature and the pressure in the engine combustion chamber can be greatly increased again. Therefore, after a part of the exhaust gas is collected by the exhaust gas recirculation valve 401, it is necessary to perform a temperature reduction process on the exhaust gas by the exhaust gas recirculation cooler 402 and to burn the exhaust gas after the temperature reduction again. The working efficiency of the engine is effectively improved, the load of the engine is lightened, and the emission of harmful substances in the waste gas is reduced.
Further, in the engine supercharging system provided by the embodiment of the present invention, the main pipeline 101 is further provided with an electronic throttle valve 9.
By controlling the opening degree of the electronic throttle valve 9, the amount of gas entering the engine 2 can be effectively and accurately controlled according to the operating state of the engine 2.
It should be noted that the electronic throttle valve 9 may be connected to a rotation speed sensor, a throttle actuator, and a throttle electronic control unit, and it is only necessary that the electronic throttle valve 9 can control the amount of gas entering the engine 2.
Further, in the engine supercharging system according to the embodiment of the present invention, the other end of the second circulation branch 602 is disposed on the main pipe 101 on a side of the electronic throttle valve 9 close to the engine 2, specifically, on a left side of the electronic throttle valve 9 as shown in fig. 1.
The other end of the second circulation branch 602 is arranged on the side, close to the engine 2, of the electronic throttle valve 9 on the main pipeline 101, so that the exhaust gas treated by the exhaust gas recirculation device 4 can quickly and efficiently enter the engine 2 for combustion when the electronic supercharger 5 is not required for supercharging.
Further, in the engine supercharging system according to the embodiment of the present invention, the air intake pipeline 1 further includes an air filter 10, and the air filter 10 is disposed on a side of the first air intake branch 102 and the second air intake branch 103 away from the connection end of the main pipeline 101, and is configured to filter fresh air.
The air filter 10 is arranged on the air inlet pipeline 1, so that dust suspended in air can be filtered before the air enters the engine 2 for combustion, the dust is prevented from entering a piston and a cylinder of the engine 2, and the abrasion of a piston group and the cylinder of the engine is effectively reduced.
Further, according to the engine supercharging system provided by the embodiment of the utility model, the engine supercharging system further comprises a catalyst 11, and the catalyst 11 is arranged on the gas outlet pipeline 3 and is positioned between the engine 2 and the exhaust gas circulation pipeline 6.
The catalyst 11 is installed on the exhaust pipeline 3, and can convert most harmful substances in the exhaust gas generated by the combustion of the engine 2 into harmless substances, so that the finally discharged exhaust gas meets the exhaust gas emission regulation.
Further, in the engine supercharging system provided by the embodiment of the present invention, the main pipeline 101 further includes an intake manifold 12, and the intake manifold 12 is connected to the engine 2; the outlet pipe 3 further includes an outlet manifold 13, and the outlet manifold 13 is disposed between the engine 2 and the catalyst 11.
The inlet manifold 12 and the outlet manifold 13 are branched to provide a separate inlet pipe and outlet pipe for each cylinder of the engine 2, so that gas can enter the engine 2 and exhaust gas can leave the engine 2.
Further, an embodiment of the present invention further provides an automobile, which includes the engine supercharging system described in the above embodiment.
Specifically, when the requirement on the external characteristics of the automobile is not high during operation, the automobile can control the working condition which needs to be executed by the engine supercharging system at the moment to be the natural air suction working condition through the control unit. At the moment, the control unit controls the electronic supercharger to be in a closed state, the bypass valve is opened, the first port and the third port of the three-way valve are controlled to be communicated, and the exhaust gas recovered through the exhaust gas circulating device directly enters the second circulating branch. And after passing through the air filter, the gas which is not combusted passes through the second air inlet branch, and then the waste gas is mixed with the gas and directly enters the engine for combustion. When the vehicle demands high external characteristics, the gas entering the engine for combustion also requires a relatively high pressure. At the moment, the control unit controls the electronic supercharger to be in an open state, the bypass valve is closed, the first port and the second port of the three-way valve are communicated, the waste gas enters the first circulation branch, the gas which is not combusted enters the first air inlet branch, is mixed with the waste gas and then passes through the electronic supercharger, and the gas entering the engine has higher pressure, so that the vehicle can have good external characteristics.
While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the utility model, taken in conjunction with the specific embodiments thereof, and that no limitation of the utility model is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (8)
1. An engine supercharging system comprises an air inlet pipeline, an engine, an air outlet pipeline, an exhaust gas recirculation device and an electronic supercharger, wherein the air inlet pipeline, the engine and the air outlet pipeline are sequentially connected, the air outlet pipeline comprises an exhaust gas circulation pipeline, the exhaust gas recirculation device is arranged on the exhaust gas circulation pipeline, and the electronic supercharger is arranged on the air inlet pipeline; the engine supercharging system is characterized by further comprising a three-way valve and a bypass valve; wherein the content of the first and second substances,
the air inlet pipeline comprises a main pipeline, a first air inlet branch and a second air inlet branch, the first air inlet branch and the second air inlet branch are connected in parallel and are respectively connected at two ends, one end of the main pipeline is connected with the engine, and the other end of the main pipeline is connected with the first air inlet branch and the second air inlet branch; the electronic supercharger is arranged on the first air inlet branch, and the bypass valve is arranged on the second air inlet branch;
the three-way valve is arranged on the exhaust gas circulation pipeline, and a first port of the three-way valve is arranged on one side, away from the engine, of the exhaust gas recirculation device;
the exhaust gas circulation pipeline comprises a first circulation branch and a second circulation branch, one end of the first circulation branch is connected with the second port of the three-way valve, the other end of the first circulation branch is connected with the first air inlet branch and is located on one side, far away from the main pipeline, of the electronic supercharger, one end of the second circulation branch is connected with the third port of the three-way valve, and the other end of the second circulation branch is connected with the main pipeline.
2. The engine boosting system according to claim 1, wherein said exhaust gas recirculation device includes an exhaust gas recirculation valve and an exhaust gas recirculation cooler arranged in this order from the engine side.
3. The engine boosting system according to claim 1, wherein an electronic throttle valve is further provided on the main conduit.
4. An engine supercharging system according to claim 3, wherein said other end of said second circulation branch is provided on a side of said main pipe on which said electronic throttle valve is located near said engine.
5. The engine boosting system according to any one of claims 1 to 4, wherein the intake manifold further comprises an air filter disposed at a side of the first and second intake branches distal from a connection end of the main manifold for filtering fresh air.
6. The engine boosting system according to claim 5, further comprising a catalyst disposed on the air outlet conduit between the engine and the exhaust gas recirculation conduit.
7. The engine boosting system according to claim 6, wherein the main conduit further comprises an intake manifold connected to the engine;
the air outlet pipeline further comprises an air outlet manifold, and the air outlet manifold is arranged between the engine and the catalyst.
8. An automobile, characterized by comprising an engine supercharging system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122932245.6U CN216617668U (en) | 2021-11-26 | 2021-11-26 | Engine supercharging system and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122932245.6U CN216617668U (en) | 2021-11-26 | 2021-11-26 | Engine supercharging system and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617668U true CN216617668U (en) | 2022-05-27 |
Family
ID=81699138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122932245.6U Active CN216617668U (en) | 2021-11-26 | 2021-11-26 | Engine supercharging system and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617668U (en) |
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2021
- 2021-11-26 CN CN202122932245.6U patent/CN216617668U/en active Active
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