CN212337443U - Parallel forced cooling and pressurizing system - Google Patents
Parallel forced cooling and pressurizing system Download PDFInfo
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- CN212337443U CN212337443U CN202020544847.7U CN202020544847U CN212337443U CN 212337443 U CN212337443 U CN 212337443U CN 202020544847 U CN202020544847 U CN 202020544847U CN 212337443 U CN212337443 U CN 212337443U
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Abstract
The utility model belongs to the field of engines, in particular to a parallel forced cooling and pressurizing system, which comprises a main water path and an independent water path; the main water path comprises a supercharger, a one-way valve and an engine main water pump arranged on the upstream of the supercharger, the independent water path comprises an electronic water pump, the electronic water pump and a connecting port of the main water path are arranged on a pipeline between the supercharger and the engine main water pump, the one-way valve is arranged on a pipeline between the connecting port and the engine main water pump, and the flowing direction of the one-way valve is set to be consistent with the main water path. The electronic water pump is adopted, so that the problems of dry grinding, high-temperature coking and the like of a supercharger rotor system are avoided, the running time of the electronic water pump is reduced, and the service life of the electronic water pump is prolonged.
Description
Technical Field
The utility model belongs to the engine field specifically is a parallel forced cooling turbocharging system.
Background
Superchargers have been widely used in engines for their effectiveness in increasing engine power, reducing fuel consumption, and improving emissions. The turbocharger is connected with the exhaust pipe when in work, and the rotating speed of the turbocharger is up to hundreds of thousands of revolutions per minute when in normal work, so that the rotating shaft and the bearing of the turbocharger must be well lubricated, and a large amount of heat inside the turbocharger is taken away from the turbocharger through the flowing of lubricating oil, thereby playing a role in protection.
To the booster, certain coolant liquid and coolant liquid pressure that traditional lubrication and cooling method provided through the coolant pump lubricate the booster of engine, utilize the flow of lubricating oil to bring the heat back to the oil pan simultaneously, play lubricated and cooling effect. After the engine is normally stopped, most of lubricating oil in a booster system pipeline flows back to an oil pan under the action of gravity. When the engine is normally started, the rotor system of the supercharger is fully lubricated in a mode of idling the engine for about 1 minute so as to protect the supercharger; when the engine is normally shut down, the temperature of an exhaust system is reduced in a mode that the engine runs for 3-5 minutes in an idling mode, so that the temperature of a bearing is reduced, and the supercharger is protected.
Traditional booster lubrication and cooling mode, like the turbo charger oil cut-off protection device that chinese patent CN103184928A disclosed, includes a tee bend oil pipe, and turbo charger is connected to this tee bend oil pipe's first branch road, and the lubricated oil circuit of engine is connected to the second branch road, and booster oil cut-off protection device is connected to the third branch road, wherein: a one-way valve which is communicated from the engine to the three-way oil pipe in one way is arranged in the first branch; the oil cut-off protection device stores lubricating oil when the engine is normally operated, and inputs the stored lubricating oil into the supercharger when the engine is stopped. The turbocharger oil-stop protection device can store lubricating oil when an engine runs, and can input the stored lubricating oil into the turbocharger for cooling and lubricating when the engine stops, so that the turbocharger oil-stop protection device can save energy and is suitable for the conditions of frequent starting and stopping and accidental stopping of the engine. However, it has the following disadvantages:
1. when the engine is normally stopped, the supercharger needs to be cooled, the engine needs to idle for a long enough time, and a lot of energy is wasted;
2. if the engine is suddenly stopped due to uncertain factors, the water pump and the water pump stop running at the moment, the engine oil and the cooling liquid cannot be continuously provided for the supercharger for cooling protection, a large amount of heat accumulated at a rotating shaft and a bearing of the supercharger cannot be dissipated in time, and after the engine is stopped, an impeller of the supercharger still continuously rotates for a period of time under the condition of no engine oil due to inertia, so that the local overheating of the supercharger can be caused, the rotating shaft and the bearing of the supercharger can be burnt, and the service life of the supercharger and even the whole engine can be shortened;
3. on some engines which are frequently started and stopped, such as diesel oil and electric power hybrid engines, there is not enough time to idle and dissipate heat, and the idling mode cannot meet the requirement of effectively protecting the supercharger.
For another example, chinese patent CN206158851U discloses a lubrication oil path for a supercharger of a hybrid power engine, which uses a motor coolant pump to realize that after the engine is stopped, an electronic water pump continues to pump oil to provide coolant for lubrication and cooling of the supercharger of the hybrid power vehicle, and a second coolant circulation loop is used to provide coolant for lubrication and cooling of the supercharger, so that after the engine is stopped, the electronic water pump continues to pump oil to provide coolant for lubrication and cooling of the supercharger of the hybrid power vehicle, thereby avoiding supercharger failure caused by oil shortage and dry grinding of bearings of the supercharger, local high-temperature coking and other conditions due to the start-stop function of the vehicle, and improving the use economy of the hybrid power vehicle for users. However, after the engine stops working, due to the structure of the three-way pipe, the electronic water pump can flow the cooling liquid back to the main cooling liquid channel, but the requirements on the design of the flow resistance and the lubricating oil matching of the electronic water pump are high, and the cooling effect of the supercharger is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a parallel forced cooling supercharging system, which adopts the parallel connection mode of an electronic water pump, solves the problem that the resistance of the electronic water pump in series connection on an engine cooling passage is overlarge, and solves the problems of dry grinding, high temperature coking and the like of a supercharger rotor system caused by frequent starting and stopping of an engine, misoperation of a user and special application of hybrid power; the check valve controls the flow direction of the cooling liquid when the electronic water pump continues to operate, the cooling liquid of the supercharger is enough, and the cooling liquid effect is good.
The technical scheme of the utility model as follows: a parallel forced cooling pressurization system comprises a main water path and an independent water path; the main water path comprises a supercharger, a one-way valve and an engine main water pump arranged on the upstream of the supercharger, and a water inlet of the electronic water pump is communicated with the external circulation of the engine; the external circulation refers to an auxiliary cooling system outside the main circulation cooling system of the engine, and a water inlet of the electronic water pump is communicated with an auxiliary water tank or a water replenishing pipe in the auxiliary cooling system of the engine.
The water circulation passageway of the terminal intercommunication engine in main water route, the water circulation passageway is engine owner cooling cycle, independent water route includes the electronic water pump, the electronic water pump with the connector setting in main water route is in the booster with on the pipeline between the engine owner water pump, the check valve sets up the connector with on the pipeline between the engine owner water pump, the circulation direction of check valve sets to with main water route is unanimous.
The parallel connection mode of the electronic water pumps is adopted, namely the circulation of the electronic water pumps is independent of the main cooling circulation of the engine, so that the problem that the resistance of the electronic water pumps connected in series in a cooling passage of the engine is overlarge is solved, and the problems of dry grinding, high-temperature coking and the like of a rotor system of a supercharger caused by frequent starting and stopping of the engine, misoperation of a user and special application of hybrid power are solved;
in addition, the check valve controls the flowing direction of the cooling liquid when the electronic water pump continues to operate, when the engine is stopped, the electronic water pump continues to operate for a period of time, the electronic water pump can completely flow to the supercharger due to the action of the check valve, the electronic water pump only needs to reach the cooling liquid capable of cooling the supercharger, the cooling liquid of the supercharger is ensured to be sufficient, the cooling effect is good, the bypass design of the check valve reduces the operating time of the electronic water pump, the service life of the electronic water pump is prolonged, and meanwhile, the rapid failure risk that the supercharger lacks the cooling liquid due to the fact that the electronic water pump is damaged and blocks a water inlet; avoiding the design of a cooling liquid with an internal flow cross section and special efficiency reduction.
Preferably, the utility model discloses still include engine control unit and set up temperature sensor on the booster, temperature sensor with the equal electric connection of electronic pump engine control unit ECU. And the engine control unit ECU is used for controlling the cooling liquid of the electronic water pump according to the temperature of the supercharger, and precisely controlling the temperature of the cooling liquid of the electronic water pump and the temperature of the supercharger by adopting closed-loop control, so that the working reliability of the system is ensured.
Preferably, the temperature sensor is arranged on a bearing of the supercharger, so that the working temperature of the supercharger can be measured quickly in real time, the accuracy of ECU control of an engine control unit is improved, and the instantaneity of coolant output of the electronic water pump is improved.
Furthermore, the utility model discloses also can not take bearing temperature sensor, electronic pump and engine owner water pump are markd according to the engine, define out safe coolant liquid flow.
The utility model has the advantages that:
1. the electronic water pump is adopted, so that the problems of dry grinding, high-temperature coking and the like of a rotor system of the supercharger caused by frequent starting and stopping of an engine, misoperation of a user and special application of hybrid power are solved.
2. The electronic water pumps are connected in parallel, namely the circulation of the electronic water pumps is independent of the main circulation of the engine, and the problem that the resistance of a circulation system of a part of engine electronic water pumps connected in series in the engine is too high is solved.
3. The parallel arrangement design of the electronic water pumps reduces the operation time of the electronic water pumps, prolongs the service life of the electronic water pumps, and simultaneously avoids the risk of quick failure of oil shortage of the supercharger due to blockage of a water inlet pipeline of the supercharger caused by damage of the electronic water pumps; avoiding the design of a cooling liquid pump with an internal flow cross section and special reduced efficiency.
Drawings
Fig. 1 is a block diagram schematically illustrating a parallel type forced cooling and supercharging system according to the present invention.
In the figure: 1-main water path, 101-supercharger, 102-engine main water pump, 103-one-way valve, 2-independent water path, 201-electronic water pump, 202-connector, 3-temperature sensor, 4-external circulation, 5-water circulation path and 6-engine control unit ECU.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Example 1:
as shown in fig. 1, a parallel type forced cooling pressurization system comprises a main water circuit 1 and an independent water circuit 2; the main water path 1 comprises a supercharger 101, a one-way valve 103 and an engine main water pump 102 arranged at the upstream of the supercharger 101, the water inlet of an electronic water pump 201 is communicated with an auxiliary water tank in an external circulation 4 of the engine, the tail end of the main water path 1 is communicated with a water circulation path 5 of the engine, the independent water path 2 comprises the electronic water pump 201, a connecting port 202 of the electronic water pump 201 and the main water path 1 is arranged on a pipeline between the supercharger 101 and the engine main water pump 102, the one-way valve 103 is arranged on a pipeline between the connecting port 202 and the engine main water pump 102, and the flowing direction of the one-way valve 103 is arranged to be consistent with the main water path 1.
The working principle of the embodiment is as follows:
when the engine normally operates, the engine main water pump directly supplies coolant to the supercharger, the electronic water pump is not required to be started under most engine working conditions, the supercharger can be cooled, when the engine main water pump supplies coolant not enough to cool the supercharger, the electronic water pump is started to provide higher coolant flow, the electronic water pump can be set to be in a normally open state, and the electronic water pump can be calibrated according to the engine to determine the starting strategy of the electronic water pump.
The check valve 103 controls the flow direction of the water channel when the electronic water pump 201 continues to operate, when the engine is stopped, the electronic water pump 201 continues to operate for a period of time, the electronic water pump 201 can all flow to the supercharger 101 due to the effect of the check valve 103, the electronic water pump 201 only needs to reach the cooling liquid capable of cooling the supercharger 101, the cooling liquid of the supercharger 101 is enough, and the cooling effect is good.
When the engine is stopped, the electronic water pump continues to operate for a period of time, the cooling liquid at the outlet of the electronic water pump can completely flow to the supercharger under the action of the one-way valve, and the electronic water pump only needs to reach the flow capable of cooling the supercharger, so that the design is simple.
In this embodiment, the electronic water pump 201 can perform constant rotation speed control or PWM control according to the use requirement of the engine.
Example 2:
as shown in fig. 1, a parallel type forced cooling pressurization system comprises a main water circuit 1 and an independent water circuit 2; the main water path 1 comprises a supercharger 101, a one-way valve 103 and an engine main water pump 102 arranged at the upstream of the supercharger 101, a water inlet of an electronic water pump 201 is communicated with a water replenishing pipe in an external circulation 4 of the engine, the tail end of the main water path 1 is communicated with a water circulation path 5 of the engine, the independent water path 2 comprises the electronic water pump 201, a connecting port 202 of the electronic water pump 201 and the main water path 1 is arranged on a pipeline between the supercharger 101 and the engine main water pump 102, the connecting port 202 is of a three-way structure, the one-way valve 103 is arranged on the pipeline between the connecting port 202 and the engine main water pump 102, and the flowing direction of the one-way valve 103 is set to be consistent with that of the main water path 1.
The present embodiment further includes an engine control unit ECU6 and a temperature sensor 3 disposed on the supercharger 101, wherein the temperature sensor 3 and the electronic water pump 201 are both electrically connected to the engine control unit ECU 6. The temperature sensor 3 is provided on a bearing of the supercharger 101.
The utility model discloses in, engine control unit ECU6 is used for the basis the coolant liquid of booster 101 temperature control electronic water pump 201 adopts closed-loop control, and the reliability of system work is guaranteed to the coolant liquid and the booster 101 temperature of accurate control electronic water pump 201.
In this embodiment, in the main water path 1, the coolant sequentially passes through the water inlet pipeline, the engine main water pump 102, the check valve 103, the supercharger 101, and the water return pipeline, and finally enters the water circulation path 5 to form coolant circulation.
In the independent water path 2, the coolant sequentially passes through the water replenishing pipe, the electronic water pump 201, and the connection port 202, and then enters the main water path 1.
The working principle of the embodiment is as follows: when the engine receives a starting signal, the electronic water pump 201 starts to operate, and the water supply delay time of the supercharger 101 is shortened; when the engine normally operates, the engine main water pump directly supplies water to the supercharger 101, the electronic water pump 201 does not need to be started under most engine working conditions, cooling and lubrication of the supercharger 101 can be achieved, and when the engine main water pump supplies water to the supercharger 101, the electronic water pump 201 is started to provide higher cooling liquid.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (3)
1. A parallel forced cooling pressurization system comprises a main water path (1) and an independent water path (2); the main water path (1) comprises a supercharger (101), a one-way valve (103) and an engine main water pump (102) arranged on the upstream of the supercharger (101), the water inlet of the electronic water pump (201) is communicated with an auxiliary water tank or a water replenishing pipe in an external circulation (4) of the engine, and the tail end of the main water path (1) is communicated with a water circulation passage (5) of the engine, and the main water path is characterized in that: the independent water path (2) comprises an electronic water pump (201), a connecting port (202) of the electronic water pump (201) and the main water path (1) is arranged on a pipeline between the supercharger (101) and the engine main water pump (102), the one-way valve (103) is arranged on a pipeline between the connecting port (202) and the engine main water pump (102), and the flowing direction of the one-way valve (103) is set to be consistent with that of the main water path (1).
2. A parallel forced cooling supercharging system according to claim 1, characterized in that: still include engine control unit ECU (6) and set up temperature sensor (3) on booster (101), temperature sensor (3) with electronic water pump (201) all electric connection engine control unit ECU (6).
3. A parallel forced cooling supercharging system according to claim 2, characterized in that: the temperature sensor (3) is arranged on a bearing of the supercharger (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020544847.7U CN212337443U (en) | 2020-04-14 | 2020-04-14 | Parallel forced cooling and pressurizing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020544847.7U CN212337443U (en) | 2020-04-14 | 2020-04-14 | Parallel forced cooling and pressurizing system |
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| CN212337443U true CN212337443U (en) | 2021-01-12 |
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| CN202020544847.7U Active CN212337443U (en) | 2020-04-14 | 2020-04-14 | Parallel forced cooling and pressurizing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608794A (en) * | 2020-04-14 | 2020-09-01 | 广西玉柴机器股份有限公司 | Cooling and lubricating system of supercharger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608794A (en) * | 2020-04-14 | 2020-09-01 | 广西玉柴机器股份有限公司 | Cooling and lubricating system of supercharger |
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