Device for thermal management of engine and vehicle
By installing a bypass pipe and throttle valve in the diesel engine to regulate the intake air temperature, the problem of urea crystallization in the diesel engine aftertreatment system was solved, improving the starting performance and economy of the diesel engine.
Patent Information
- Application Number
- CN202423025896.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Severe urea crystallization in the diesel engine aftertreatment system affects diesel engine performance and user experience.
By setting a bypass pipe and a first throttle valve, the throttle valve is opened during low-temperature start-up to regulate the intake air temperature; when the diesel engine exhaust temperature is low, the throttle valve opening is controlled to allow some intake air to enter the diesel engine intake manifold directly without passing through the intercooler, thereby increasing the exhaust temperature; during active regeneration, the throttle valve is controlled to increase the exhaust temperature to shorten the regeneration time.
It improves the crystallization of SCR urea, shortens the active regeneration time, reduces fuel consumption, and enhances the economy of diesel engines.
Smart Images
Figure CN223511027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle engine technology, and more particularly to a device for thermal management of engines, and also to vehicles. Background Technology
[0002] Most diesel engines on the market use intercooling systems to cool the intake air through air convection. This effectively lowers the intake air temperature and thus the combustion temperature, thereby reducing NOx emissions. However, the intercooling system causes rapid hydrolysis of the atomized urea solution injected into the exhaust pipe. At lower temperatures, urea crystallization easily occurs, leading to severe urea crystallization in the diesel engine's aftertreatment system. This negatively impacts engine performance and user experience. Utility Model Content
[0003] This invention provides a device for thermal management of engines, which solves the problem of severe urea crystallization in existing diesel engine aftertreatment systems, effectively improves SCR urea crystallization, shortens active regeneration time, and reduces active regeneration fuel consumption.
[0004] According to a first aspect of the present invention, a device for thermal management of an engine is provided, comprising an inlet manifold, an intercooled rear intake manifold, a first throttle valve, and a bypass manifold. One end of the bypass manifold is connected to one side of the inlet manifold, and the other end of the bypass manifold is connected to the first end of the intercooled rear intake manifold. An intercooler is connected between the first end of the inlet manifold and the second end of the intercooled rear intake manifold via a pipeline. An exhaust port is provided on the side wall of the intercooled rear intake manifold, and the first throttle valve is connected between the bypass manifold and the inlet manifold.
[0005] According to the present invention, the device for thermal management of an engine achieves low-temperature start-up by setting a bypass pipe in conjunction with a first throttle valve. When the intake air temperature of the diesel engine is lower than the set temperature value, the first throttle valve is opened. By adjusting the opening of the first throttle valve, the intake air temperature of the diesel engine is increased. After successful start-up, the first throttle valve can be closed.
[0006] When the diesel engine exhaust temperature is low, the opening of the first throttle valve can be controlled to allow some intake air to enter the diesel engine intake manifold directly without passing through the intercooler, thereby increasing the diesel engine exhaust temperature and improving SCR urea crystallization. During active regeneration, the diesel engine exhaust temperature can be increased by controlling the first throttle valve, shortening the active regeneration time, reducing active regeneration fuel consumption, and thus ensuring fuel economy.
[0007] In addition, the device for thermal management of an engine according to this utility model may also have the following additional technical features:
[0008] In some embodiments of this utility model, a first temperature sensor is also included. The first temperature sensor is provided on the inlet pipe and is located between the bypass pipe and the first end of the inlet pipe.
[0009] By employing the above embodiments, the first temperature sensor can monitor the temperature inside the intake manifold in real time. Based on this temperature, the opening of the first throttle valve is adjusted, allowing a portion of the intake air to bypass the intercooler and directly enter the intake manifold behind it, thereby increasing the diesel engine exhaust temperature and mitigating SCR urea crystallization. During active regeneration, controlling the first throttle valve can further increase the diesel engine exhaust temperature, shortening the active regeneration time and reducing fuel consumption, thus ensuring fuel economy.
[0010] In some embodiments of this utility model, a second throttle valve is also included, and the end of the intercooled intake pipe away from the bypass pipe is connected to the second throttle valve.
[0011] By adopting the above embodiments, the setting of the second throttle valve can adjust the intake volume of the air entering the intake pipe after passing through the intercooler, and work with the first throttle valve to improve SCR urea crystallization.
[0012] In some embodiments of this utility model, a second temperature sensor is also included, which is provided on the intercooled intake pipe.
[0013] By adopting the above embodiments, the second temperature sensor, together with the first temperature sensor, monitors the intake temperature of the front intake pipe and the intake temperature of the intercooler rear intake pipe in real time, thereby ensuring the intake temperature of the air entering the intercooler rear intake pipe after passing through the intercooler and preventing the intercooler front intake temperature and the intercooler rear intake temperature from exceeding the limit.
[0014] In some embodiments of this utility model, the bypass pipe includes a first bypass pipe and a second bypass pipe. One end of the first bypass pipe is connected to one side of the intake manifold, and the other end of the first bypass pipe is connected to one end of the second bypass pipe. The other end of the second bypass pipe is connected to the intercooler rear intake manifold.
[0015] By adopting the above embodiments, the combination of the first bypass pipeline and the second bypass pipeline increases the ease of installation of this device.
[0016] In some embodiments of this utility model, the first bypass pipeline includes a first pipe body and a first connector. One end of the first pipe body is connected to the first throttle valve and the inlet pipe through the first connector, and the other end of the first pipe body is connected to the second bypass pipeline.
[0017] By adopting the above embodiments, the provision of the first connector increases the convenience of connecting the first bypass pipe to the inlet pipe and the first throttle valve.
[0018] In some embodiments of this utility model, the second bypass pipe includes a second pipe body and a third pipe body. One end of the second pipe body is connected to the first bypass pipe, one end of the third pipe body is connected to the other end of the second pipe body, and the other end of the third pipe body is connected to the first end of the intercooler rear intake pipe.
[0019] In some embodiments of this utility model, the third tube is a bent tube.
[0020] By adopting the above embodiments, the design of the third pipe as a bend makes the connection between the bypass pipe and the intercooler rear intake pipe, as well as the installation of the bypass pipe, more convenient and easier.
[0021] In some embodiments of this utility model, a fixed bracket is also included. A fixed bracket is sleeved on the first bypass pipe, and the first bypass pipe is connected to the diesel engine through the fixed bracket.
[0022] By adopting the above embodiments, the fixed bracket increases the stability of the connection between the device and the diesel engine.
[0023] According to a second aspect of the present invention, a vehicle is provided, comprising all the technical features of the device for thermal management of an engine according to the first aspect of the present invention.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] First, by setting up a bypass pipeline in conjunction with the first throttle valve, when the diesel engine intake air temperature is lower than the set temperature value, the first throttle valve is opened. By adjusting the opening of the throttle valve, the diesel engine intake air temperature is increased. After a successful start, the first throttle valve can be closed.
[0026] Secondly, when the diesel engine exhaust temperature is low, the opening of the first throttle valve can be controlled to allow some intake air to enter the diesel engine intake manifold directly without passing through the intercooler, thereby increasing the diesel engine exhaust temperature and improving SCR urea crystallization. When the diesel engine is in a low-temperature operating condition, the exhaust temperature effect under low-temperature conditions can be improved by controlling the throttle valve, thereby reducing urea crystallization, shortening the active regeneration time, and reducing active regeneration fuel consumption. Attached Figure Description
[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0028] Figure 1 A perspective view schematically illustrates a device for thermal management of an engine, according to some embodiments of the present invention, mounted on a diesel engine.
[0029] Figure 2 A first perspective view of a device for thermal management of an engine according to some embodiments of the present invention is shown schematically.
[0030] Figure 3 A second perspective view of a device for thermal management of an engine according to some embodiments of the present invention is shown schematically.
[0031] Figure 4 The third view schematically illustrates a perspective view of a device for thermal management of an engine according to some embodiments of the present invention.
[0032] Figure 5 An exploded view schematically illustrates an apparatus for thermal management of an engine according to some embodiments of the present invention.
[0033] Figure 6 A perspective view of a gasket for an engine thermal management device according to some embodiments of the present invention is shown schematically.
[0034] Figure label:
[0035] 1. Front intake pipe; 101. Side connection; 2. First mounting hole; 21. First temperature sensor; 22. Third temperature sensor; 3. First throttle valve; 4. First bypass pipe; 41. First pipe body; 42. First connection; 43. First connector; 5. Fixed bracket; 6. Second bypass pipe; 61. Second pipe body; 62. Third pipe body; 63. Second connector; 64. Second connection; 65. Third connector; 7. Pipe clamp; 8. Second temperature sensor; 9. Intercooler rear intake pipe; 91. Rear intake pipe body; 92. First rear intake pipe connection; 93. Second rear intake pipe connection; 94. Exhaust port; 10. Second throttle valve; 11. Gasket; 12. Gasket through hole; 13. Second mounting hole. Detailed Implementation
[0036] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0037] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0038] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0039] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.
[0040] like Figures 1 to 6As shown, according to an embodiment of the first aspect of the present invention, a device for thermal management of an engine is proposed, including an inlet pipe 1, an intercooled rear inlet pipe 9, a first throttle valve 3, and a bypass pipe. One end of the bypass pipe is connected to one side of the inlet pipe 1, and the other end of the bypass pipe is connected to the first end of the intercooled rear inlet pipe 9. An intercooler is connected between the first end of the inlet pipe 1 and the second end of the intercooled rear inlet pipe 9 through a pipeline. An exhaust port 94 is provided on the side wall of the intercooled rear inlet pipe 9, and the first throttle valve 3 is connected between the bypass pipe and the inlet pipe 1.
[0041] In the above embodiments, it should be noted that the exhaust port 94 opened on the side wall of the intercooler rear intake pipe 9 is connected to the turbocharger through a pipeline and then connected to the exhaust pipe of the engine. The side of the front intake pipe 1 is provided with a side connection part 101, and the bypass pipe is connected to the side connection part 101 of the front intake pipe 1 by a screw connection.
[0042] The first end and the second end of the inlet tube 1 are the two opposite ends of the inlet tube 1.
[0043] The technical effects achieved by the above embodiments are as follows: First, by setting a bypass pipe in conjunction with the first throttle valve 3, when the diesel engine intake air temperature is lower than the set temperature value during low-temperature start-up, the first throttle valve 3 is opened, and the diesel engine intake air temperature is increased by adjusting the opening degree of the first throttle valve 3. After successful start-up, the first throttle valve 3 can be closed.
[0044] Secondly, under conditions where the diesel engine exhaust temperature is low, the opening of the first throttle valve 3 can be controlled to allow some intake air to enter the diesel engine intake manifold directly without passing through the intercooler, thereby increasing the diesel engine exhaust temperature and improving SCR urea crystallization. During active regeneration, the diesel engine exhaust temperature can be increased by controlling the first throttle valve, shortening the active regeneration time, reducing active regeneration fuel consumption, and thus ensuring fuel economy.
[0045] Optional, such as Figures 1 to 5 As shown, it also includes a first temperature sensor 21, which is provided on the inlet pipe 1 and is located between the bypass pipe and the first end of the inlet pipe 1.
[0046] In the above optional embodiments, it should be noted that the side wall of the inlet pipe 1 is provided with
[0047] The first mounting hole 2 is provided, and the first temperature sensor 21 is mounted on the first mounting hole 2; the side wall of the front air pipe 1 is also provided with a second mounting hole 13, and a third temperature sensor 22 is also provided, which is mounted on the second mounting hole 13.
[0048] The beneficial effects of the above optional embodiments are as follows: the setting of the first temperature sensor 21 can monitor the temperature in the intake manifold 1 in real time, and adjust the opening of the first throttle valve 3 according to the temperature of the intake manifold 1, so that a part of the intake air can enter the intake manifold 9 after the intercooler without passing through the intercooler, thereby increasing the exhaust temperature of the diesel engine, improving SCR urea crystallization, shortening the active regeneration time, and reducing active regeneration fuel consumption.
[0049] Optional, such as Figures 1 to 5 As shown, it also includes a second throttle valve 10, and the end of the intercooled intake pipe 9 away from the bypass pipe is connected to the second throttle valve 10.
[0050] In the above optional embodiments, it should be noted that the second throttle valve 10 is connected to the intercooler rear intake pipe 9 by means of screwing, snap-fitting, or welding.
[0051] The beneficial effects of the above optional embodiments are as follows: the intake volume of the air entering the intercooler after passing through the intercooler and entering the intercooler intake pipe 9 can be adjusted by setting the second throttle valve 10, which, together with the first throttle valve 3, improves the SCR urea crystallization situation.
[0052] Optional, such as Figures 1 to 5 As shown, it also includes a second temperature sensor 8, which is installed on the intercooler rear intake pipe 9.
[0053] In the above optional embodiments, it should be noted that the second temperature sensor 8 is connected to the intercooler rear intake pipe 9 by means of screws, clips, or welding.
[0054] The beneficial effects of the above optional embodiments are as follows: the second temperature sensor 8, together with the first temperature sensor 21, monitors the intake temperature of the front intake pipe 1 and the intake temperature of the intercooled intake pipe 9 in real time, thereby ensuring the intake temperature of the intake pipe 9 after passing through the intercooler, improving SCR urea crystallization, shortening the active regeneration time, and reducing active regeneration oil consumption.
[0055] Optional, such as Figure 5 As shown, the bypass pipe includes a first bypass pipe 4 and a second bypass pipe 6. One end of the first bypass pipe 4 is connected to one side of the front air pipe 1, and the other end of the first bypass pipe 4 is connected to one end of the second bypass pipe 6. The other end of the second bypass pipe 6 is connected to the intercooler rear air intake pipe 9.
[0056] The first bypass pipe 4 includes a first pipe body 41 and a first connector 43. One end of the first pipe body 41 is connected to the first throttle valve 3 and the inlet pipe 1 through the first connector 43, and the other end of the first pipe body 41 is connected to the second bypass pipe 6.
[0057] The second bypass pipe 6 includes a second pipe body 61 and a third pipe body 62. One end of the second pipe body 61 is connected to the first bypass pipe 4, one end of the third pipe body 62 is connected to the other end of the second pipe body 61, and the other end of the third pipe body 62 is connected to the first end of the intercooler rear intake pipe 9. The third pipe body 62 is a bend.
[0058] In the above optional embodiments, it should be noted that the first bypass pipe 4 also includes a first connecting part 42. One end of the first pipe body 41 is integrally formed with the first connecting part 42. The first connecting member 43 is a screw. The screw passes through the first connecting part 42 and the first throttle valve 3 and is threadedly connected to the side connecting part 101 of the air intake pipe 1.
[0059] The second bypass pipe 6 also includes a second connector 63, a second connecting part 64, and a third connector 65. The second pipe body 61 and the third pipe body 62 are connected by the second connector 63, which is a pipe clamp structure. The second pipe body 61 is connected to the first pipe body 41 by a pipe clamp 7. Gaskets 11 are provided between the first connecting part 42 and the first throttle valve 3, and between the side connecting part 101 and the first throttle valve 3, to ensure sealing. The gaskets 11 have multiple gasket through holes 12 for the screw to pass through. The intercooler rear intake pipe 9 includes a rear intake pipe body 91, a first rear intake pipe connecting part 92, a second rear intake pipe connecting part 93, and a third pipe body 65. A second connecting part 64 is provided at one end of the body 62 away from the second pipe body 61. The second connecting part 62 passes through the second connecting part 64 and is connected to the first rear air intake pipe connecting part 92. One end of the rear air intake pipe body 91 is integrally formed with the first rear air intake pipe connecting part 92, and the other end of the air intake pipe body 91 is integrally formed with the first rear air intake pipe connecting part 92. The first rear air intake pipe connecting part 92 is connected to the second throttle valve 10 by bolts. Gaskets 11 are provided between the first rear air intake pipe connecting part 92 and the second connecting part 64, and between the second rear air intake pipe connecting part 93 and the second throttle valve 10. The shape of the first pipe body 41 is an L-shaped bent pipe structure.
[0060] The advantages of the above optional embodiments are as follows: the cooperative arrangement of the second connector 63, the second connector 64, the third connector 65, the first connector 42, the first tube 41, the first connector 43, the second tube 61, and the third tube 62 increases the convenience and stability of the device installation.
[0061] Optional, such as Figures 1 to 5 As shown, it also includes a fixed bracket 5. The fixed bracket 5 is fitted on the first bypass pipe 4, and the first bypass pipe 4 is connected to the diesel engine through the fixed bracket 5.
[0062] In the above optional embodiments, it should be noted that the fixed bracket 5 connects the first bypass pipe 4 to the diesel engine by means of bolt connection.
[0063] The beneficial effect of the above optional embodiments is that the fixed bracket 5 increases the stability of the connection between the device and the diesel engine.
[0064] According to an embodiment of the second aspect of the present invention, a vehicle is provided that includes all the technical features of the device for thermal management of the engine according to the first aspect of the present invention.
[0065] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.
Claims
1. A device for thermal management of an engine, characterized in that, It includes an inlet pipe (1), an intercooled rear inlet pipe (9), a first throttle valve (3), and a bypass pipe. One end of the bypass pipe is connected to one side of the inlet pipe (1), and the other end of the bypass pipe is connected to the first end of the intercooled rear inlet pipe (9). An intercooler is connected between the first end of the inlet pipe (1) and the second end of the intercooled rear inlet pipe (9) through a pipeline. An exhaust port (94) is opened on the side wall of the intercooled rear inlet pipe (9). The first throttle valve (3) is connected between the bypass pipe and the inlet pipe (1).
2. The apparatus for thermal management of an engine according to claim 1, characterized in that, It also includes a first temperature sensor (21), which is provided on the inlet pipe (1) and is located between the bypass pipe and the first end of the inlet pipe (1).
3. The apparatus for thermal management of an engine according to claim 1, characterized in that, It also includes a second temperature sensor (8), which is installed on the intercooler rear intake pipe.
4. The apparatus for thermal management of an engine according to claim 1, characterized in that, It also includes a second throttle valve (10), and the end of the intercooled rear intake pipe (9) opposite to the bypass pipe is connected to the second throttle valve (10).
5. The apparatus for thermal management of an engine according to any one of claims 1 to 4, characterized in that, The bypass pipe includes a first bypass pipe (4) and a second bypass pipe (6). One end of the first bypass pipe (4) is connected to one side of the front air pipe (1), and the other end of the first bypass pipe (4) is connected to one end of the second bypass pipe (6). The other end of the second bypass pipe (6) is connected to the intercooler rear air intake pipe (9).
6. The apparatus for thermal management of an engine according to claim 5, characterized in that, The first bypass pipe (4) includes a first pipe body (41) and a first connector (43). One end of the first pipe body (41) is connected to the first throttle valve (3) and the inlet pipe (1) through the first connector (43), and the other end of the first pipe body (41) is connected to the second bypass pipe (6).
7. The apparatus for thermal management of an engine according to claim 5, characterized in that, The second bypass pipe (6) includes a second pipe body (61) and a third pipe body (62). One end of the second pipe body (61) is connected to the first bypass pipe (4), one end of the third pipe body (62) is connected to the other end of the second pipe body (61), and the other end of the third pipe body (62) is connected to the first end of the intercooler rear intake pipe (9).
8. The apparatus for thermal management of an engine according to claim 7, characterized in that, The third pipe (62) is a bend.
9. The apparatus for thermal management of an engine according to claim 5, characterized in that, It also includes a fixed bracket (5), on which the fixed bracket (5) is fitted, and the first bypass pipe (4) is connected to the diesel engine through the fixed bracket (5).
10. A vehicle, characterized in that, Includes the apparatus for thermal management of an engine as described in any one of claims 1 to 9.