Engine system and vehicle
By arranging the return and outlet pipes in parallel within the engine system, and optimizing the cooling pipe layout in conjunction with pipe supports and thermostats, the problem of large space occupation in the cooling pipes of liquid-cooled engines is solved, improving integration and achieving system compatibility and efficient cooling circulation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING FOTON CUMMINS ENGINE
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
The cooling pipes of existing liquid-cooled engines occupy a large space inside the vehicle, resulting in low integration of the engine system.
Design an engine system in which the return pipe and the outlet pipe are arranged side by side on the side wall of the cylinder head cover and above the cylinder head, with the highest point not exceeding the highest point of the cylinder head cover, and are fixed by pipe supports. Combined with a thermostat and a T-junction, the coolant circulation is realized, thus optimizing the cooling pipe layout.
It improves the integration of the engine system, reduces the space occupied, achieves efficient coolant circulation, is compatible with both liquid-cooled and non-liquid-cooled engine systems, and saves manufacturing and assembly costs.
Smart Images
Figure CN224200726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, specifically to an engine system and a vehicle. Background Technology
[0002] In vehicle engine system design, the engine's cooling pipes are interconnected and work in conjunction with the vehicle's overall cooling pipes, making the design of the engine cooling pipes extremely important. Existing engines can be categorized into hydraulic retarder engines and non-hydraulic retarder engines based on their operating principles. The cooling system of a hydraulic retarder engine, in addition to cooling the engine itself, also serves to cool the hydraulic retarder. However, the existing cooling pipes of hydraulic retarder engines occupy a significant amount of space within the vehicle, indicating that the integration of the engine system needs further improvement. Utility Model Content
[0003] The purpose of this invention is to overcome the problem of low integration in existing engine cooling systems and to provide an engine system and vehicle that has the advantages of small footprint and high integration.
[0004] To achieve the above objectives, the first aspect of this utility model provides an engine system, the engine system comprising:
[0005] An engine, the engine including a water pump, a cylinder head and a cylinder head cover, the water pump having an inlet for coolant to enter, and a cylinder head water jacket for coolant to flow out;
[0006] A hydraulic retarder, wherein the inlet of the hydraulic retarder is connected to the cylinder head water jacket via an outlet pipe;
[0007] The radiator has its outlet and inlet connected, and its return port and outlet of the hydraulic retarder are connected via a return pipe.
[0008] The return pipe and the outlet pipe are arranged side by side on the side wall of the cylinder head cover and above the cylinder head, such that the highest point of the return pipe and the outlet pipe is not higher than the highest point of the cylinder head cover.
[0009] Preferably, the engine system further includes a thermostat, which has an inlet, a return outlet and a bypass outlet. The inlet is connected to the outlet of the hydraulic retarder, the return outlet is connected to the return outlet of the radiator through a return pipe, and the bypass outlet is connected to the outlet of the radiator and the inlet of the radiator through a T-junction pipe.
[0010] Preferably, the engine system further includes a pipe support that secures the outlet pipe and the return pipe to each other.
[0011] Preferably, the bypass outlet is connected to a bypass pipe, which is connected to the liquid outlet and the water inlet of the radiator via a T-junction.
[0012] Preferably, the thermostat includes:
[0013] A thermostat seat, wherein the return port, the inlet port, and the bypass outlet are disposed on the thermostat seat, and the thermostat seat is further provided with at least one channel interface configured for connecting at least one of the coolant return water and the air compressor return water; and
[0014] A thermostat assembly is disposed inside the thermostat seat.
[0015] Preferably, the thermostat includes two of the thermostat components;
[0016] Preferably, a sealing gasket is provided at the connection between the liquid outlet pipe and the cylinder head water jacket.
[0017] Preferably, the cylinder head water jacket is disposed at one end of the cylinder head along the axial direction of the water pump, the thermostat is disposed near the other end of the cylinder head along the axial direction of the water pump, the outlet pipe and the return pipe are disposed along the axial direction of the water pump, and the inlet is disposed below the cylinder head water jacket.
[0018] Preferably, the engine has a main flow channel and a return flow channel inside. The main flow channel is configured to allow the coolant entering from the inlet to circulate and exchange heat and flow out from the cylinder head water jacket. The return flow channel is configured to allow the coolant that has circulated and exchanged heat in the main flow channel to flow back from the cylinder head water jacket to the inlet. The engine is provided with a plug for sealing the return flow channel.
[0019] Preferably, the cylinder head water jacket has a first channel and a second channel inside, the first channel connecting the main flow channel and the outlet pipe, the second channel connecting the return channel and the first channel, and the plug sealing the connection between the first channel and the second channel.
[0020] Preferably, the first channel is provided with a connection structure for installing a built-in thermostat;
[0021] The plug, the return pipe, and the outlet pipe are detachably connected to the engine.
[0022] A second aspect of this utility model provides a vehicle that includes the engine system described above.
[0023] Through the above technical solution, the engine system provided by this utility model has an outlet pipe that transmits the cooling water after heat exchange with the engine to the hydraulic retarder for cooling; and a return pipe that transmits the cooling water after heat exchange with the engine and the hydraulic retarder to the radiator, thereby realizing the circulation of coolant within the hydraulic retarder engine. Since the cylinder head cover's length in the width direction is less than the cylinder's length in the width direction, the return and outlet pipes of this utility model are arranged side-by-side on the side wall of the cylinder head cover and above the cylinder head, with their highest point not exceeding the highest point of the cylinder head cover. This ensures that the arrangement of the return and outlet pipes does not increase the original engine's maximum width and maximum height, further making the cooling pipe layout of the engine system provided by this utility model more reasonable and its integration higher. Attached Figure Description
[0024] Figure 1 This is a structural schematic diagram of an engine system provided by this utility model;
[0025] Figure 2 This is a front view schematic diagram of the liquid outlet pipe, liquid return pipe, and pipeline support provided by this utility model in an assembled state;
[0026] Figure 3 yes Figure 2 The diagram shows a top view of the combined structure of the outlet pipe, return pipe, and pipe support.
[0027] Figure 4 This is a schematic diagram of a thermostat provided by this utility model;
[0028] Figure 5 This is another structural schematic diagram of the thermostat provided by this utility model;
[0029] Figure 6 yes Figure 4 The diagram shows the internal structure of the thermostat.
[0030] Figure 7 yes Figure 1 A partial cross-sectional view of the engine system shown.
[0031] Figure 8 This is a schematic diagram of another engine system provided by this utility model;
[0032] Figure 9 yes Figure 8 The diagram shows a partial cross-sectional view of the engine system.
[0033] Explanation of reference numerals in the attached figures
[0034] 1-Engine system; 10-Engine; 20-Thermostat; 30-Outlet pipe; 40-Return pipe; 50-Bypass pipe; 60-Tee pipe; 70-Pipe support;
[0035] 11-Cylinder; 12-Water pump; 13-Cylinder head; 14-Cylinder head cover; 131-Cylinder head water jacket; 132-Sealing gasket; 133-Plug; 134-Built-in thermostat;
[0036] 21-Thermostat seat; 211-Upper seat; 212-Lower seat; 22-Thermostat assembly;
[0037] 12a - Inlet; 13a - First channel; 13b - Second channel; 13c - Connecting structure;
[0038] 20a - Inlet; 20b - Return port; 20c - Bypass outlet; 20d - Channel interface;
[0039] 80a - Inlet; 80b - Outlet; 90a - Liquid outlet; 90b - Liquid return outlet. Detailed Implementation
[0040] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0041] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0042] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.
[0043] It is understood that the engine system 1 provided by this utility model can be applied to vehicles to provide power to them. Generally, the engine system 1 can be divided into a hydraulic retarder engine system 1 and a non-hydraulic retarder engine system 1. In the hydraulic retarder engine system 1, the vehicle's cooling system is set to simultaneously cool and dissipate heat from the entire vehicle, the engine 10, and the hydraulic retarder. Therefore, the arrangement of the cooling pipes in the hydraulic retarder engine system 1 is very important. How to arrange the cooling pipes of the engine 10 with minimal space, making the engine system 1 smaller and saving vehicle space is an important issue.
[0044] Based on the above-mentioned technical problems, this utility model provides an engine system 1, please refer to [link / reference]. Figure 1 , Figure 1 This is a schematic diagram of an engine system provided by this utility model. The engine system 1 includes an engine 10, a hydraulic retarder, and a radiator. The engine 10 includes a water pump 12, a cylinder head 13, and a cylinder head cover 14. The water pump 12 has an inlet 12a for coolant entry, and the cylinder head 13 has a cylinder head water jacket 131 for coolant exit. The inlet 80a of the hydraulic retarder is connected to the cylinder head water jacket 131 via an outlet pipe 30. The outlet 90a of the radiator is connected to the inlet 12a, and the return port 90b of the radiator is connected to the outlet 80b of the hydraulic retarder via a return pipe 40. The return pipe 40 and the outlet pipe 30 are arranged side-by-side on the side wall of the cylinder head cover 14 and above the cylinder head 13, such that the highest point of the return pipe 40 and the outlet pipe 30 is not higher than the highest point of the cylinder head cover 14.
[0045] When the engine system 1 provided by this utility model is cooling, the cooling medium flows from the radiator outlet 90a through a pipeline to the water pump inlet 12a. In the water pump 12, it is pressurized and enters the main flow channel of the cylinder 11 of the engine 10 to exchange heat with the engine 10, and then flows along the main flow channel to the cylinder head water jacket 131 on the cylinder head 13 of the engine 10. After exchanging heat with the engine 10, the cooling medium flows from the cylinder head water jacket 131 and the outlet pipe 30 to the inlet 80a of the hydraulic retarder, where it exchanges heat with the hydraulic retarder. The cooling medium that has exchanged heat with the hydraulic retarder flows out from the outlet 80b of the hydraulic retarder and returns to the radiator via the return pipe 40, where it is cooled down for the next cooling cycle.
[0046] It is understood that in the engine system 1 provided by this utility model, the outlet pipe 30 transmits the cooling water after heat exchange with the engine 10 to the hydraulic retarder for cooling and heat dissipation; the return pipe 40 can transmit the cooling water after heat exchange with the engine 10 and the hydraulic retarder to the radiator, thereby realizing the circulation of the cooling medium in the hydraulic retarder engine 10.
[0047] It should be noted that a typical engine 10 includes a cylinder 11, a water pump 12 integrated within the cylinder 11, a cylinder head 13, and a cylinder head cover 14 disposed on the cylinder head 13. The above structure is based on existing technology and will not be described again. Taking the axial direction of the water pump 12 as the length direction and the direction perpendicular to the axial and vertical directions of the water pump 12 as the width direction, within the engine 10, the width of the cylinder 11 is greater than the width of the cylinder head 13, which is greater than the width of the cylinder head cover 14.
[0048] Therefore, in this embodiment, the return pipe 40 and the outlet pipe 30 are arranged side by side on the side wall of the cylinder head cover 14 and above the cylinder head 13, and the highest point of the return pipe 40 and the outlet pipe 30 is not higher than the highest point of the cylinder head cover 14; so that the arrangement of the return pipe 40 and the outlet pipe 30 will not increase the maximum width and maximum height of the original engine 10, thereby further making the cooling pipe arrangement of the engine system 1 provided by this utility model more reasonable and the integration higher.
[0049] The "parallel arrangement" can be understood as either vertically arranged or horizontally arranged. Alternatively, it can be understood as some of the return pipes 40 and some of the outlet pipes 30 being arranged vertically, while other portions of the return pipes 40 and other portions of the outlet pipes 30 are arranged horizontally (see reference). Figure 1 ).
[0050] In one specific implementation (see reference) Figure 1 In this embodiment, the cylinder head cover 14 covers most of the upper surface of the cylinder head 13, while a small portion of the upper surface of the cylinder head 13 is not covered by the cylinder head cover 14. The return pipe 40 and the outlet pipe 30 are arranged side by side on the small portion of the cylinder head 13, thereby making the engine system 1 as a whole have a smaller volume.
[0051] Please refer to it again. Figure 1 And please see Figure 2 and Figure 3 , Figure 2 This is a front view schematic diagram of the liquid outlet pipe, liquid return pipe, and pipeline support provided by this utility model in an assembled state; Figure 3 yes Figure 2The diagram shows a top view of the combined liquid outlet pipe, liquid return pipe, and pipe support. In some preferred embodiments, the engine system 1 further includes a thermostat 20, which has an inlet 20a, a return port 20b, and a bypass outlet 20c. The inlet 20a is connected to the outlet 80b of the hydraulic retarder, the return port 20b is connected to the return port 90b of the radiator via a return pipe 40, and the bypass outlet 20c is connected to the outlet 90a and the inlet 12a of the radiator via a tee pipe 60.
[0052] It is understood that the cooling cycle of the engine system 1 provided in the above embodiment is divided into two cooling cycle modes: a large cycle mode and a small cycle mode. When the engine system 1 enters the large cycle mode, the cooling medium flows from the outlet 90a of the radiator through the pipeline to the inlet 12a of the water pump 12. The water pump 12 pressurizes the medium and it enters the main flow channel of the cylinder 11. After heat exchange in the main flow channel, the medium flows from the cylinder head water jacket 131 through the outlet pipe 30 to the hydraulic retarder. After completing the cooling and heat exchange in the hydraulic retarder, the medium enters the thermostat 20 from the inlet 20a and flows back from the return port 20b of the thermostat 20 through the return pipe 40 to the radiator. The medium is cooled down in the radiator to start the next cooling cycle.
[0053] When the engine system 1 enters the small circulation mode, after completing the cooling and heat exchange in the hydraulic retarder, it enters the thermostat 20 from the inlet 20a and flows out from the bypass outlet 20c of the thermostat 20 to the three-way pipe 60, and enters the inlet 12a of the water pump 12 from the three-way pipe 60, and then undergoes the next round of cooling circulation in the main flow channel of the engine 10 and the hydraulic retarder.
[0054] It is understood that the thermostat 20 changes the flow direction of the cooling medium entering it, controlling the cooling medium to flow out from the return port 20b to achieve a large circulation of the cooling medium, or to flow out from the bypass port 20c to achieve a small circulation of the cooling medium. Preferably, the thermostat 20 changes the flow direction of the cooling medium based on the temperature monitoring results of the cooling medium inside it. The setting of the thermostat 20 improves the energy utilization rate of the original cooling system. The control principle of the cooling medium flow direction of the thermostat 20 refers to the prior art and will not be repeated here.
[0055] Please refer to it again. Figure 1 In some preferred embodiments, the engine system 1 further includes a pipe support 70, which secures the outlet pipe 30 and the return pipe 40 to each other. In some preferred embodiments, the bypass outlet 20c is connected to a bypass pipe 50, which is connected to the radiator outlet 90a and the inlet 12a via a tee pipe 60.
[0056] It is understood that the pipe bracket 70 connects the return pipe 40 and the outlet pipe 30, thereby providing support for a pipe located far from the engine 10. Simultaneously, it integrates the two pipes into a single unit, allowing the supplier to supply both pipes together, facilitating assembly at the engine 10 plant and saving assembly time and costs. It is understood that the return pipe 40 and the outlet pipe 30 can be respectively fixed to the engine 10 by one or more fasteners, or the pipe bracket 70 can be fixed to the engine 10, thus fixing the return pipe 40 and the outlet pipe 30 relatively to the engine 10.
[0057] In some specific implementation methods (see reference) Figure 2 and Figure 3 The return pipe 40 and the outlet pipe 30 are arranged along the axial direction of the engine 10 water pump 12. The two pipes are arranged side by side on the horizontal plane near the cylinder head water jacket 131. The outlet pipe 30 is located near the cylinder head cover 14, and the return pipe 40 is located on the side of the outlet pipe 30 away from the cylinder head cover 14. A pipe bracket 70 connects a portion of the return pipe 40 and a portion of the outlet pipe 30 arranged side by side in the horizontal direction.
[0058] Two pipes, located away from the cylinder head water jacket 131, are arranged side-by-side in a vertical direction, with the outlet pipe 30 positioned below and the return pipe 40 positioned above. A pipe support 70 connects a portion of the return pipe 40 and a portion of the outlet pipe 30 arranged side-by-side in the vertical direction. In this embodiment, it is understood that the pipe support 70 provides support for the return pipe 40, making the connection between the return pipe 40 and the engine 10 more stable.
[0059] In some preferred embodiments, the liquid outlet pipe 30 also integrates a venting port, thereby reducing the number of parts in the engine system 1 and improving its integration. In some preferred embodiments, the liquid return pipe 40 and the liquid outlet pipe 30 are internally high-pressure molded pipes; preferably, the height of the internally high-pressure molded pipe is 30-40 mm and the width is 46-60 mm; more preferably, the height of the internally high-pressure molded pipe is 34 mm and the width is 52 mm. The internally high-pressure molded pipe can reduce the overall height of the engine 10, minimizing its footprint and providing ample space for the overall vehicle layout.
[0060] The bypass outlet 20c is connected to a bypass pipe 50, which is connected to the radiator outlet 90a and the inlet 12a via a T-connector 60. It is understood that the bypass pipe 50 allows the cooling medium located in the thermostat 20, which is further away from the T-connector 60, to be introduced into the inlet 12a of the water pump 12. In some specific embodiments, the T-connector 60 and the bypass pipe 50 are disposed on the side wall of the cylinder 11. Preferably, the bypass pipe 50 is fixed to the side wall of the engine 10 by at least one fastener.
[0061] Please refer to it again. Figure 1 And please see Figure 4 , Figure 5 and Figure 6 , Figure 4 This is a schematic diagram of a thermostat provided by this utility model; Figure 5 This is another structural schematic diagram of the thermostat provided by this utility model; Figure 6 yes Figure 4 The diagram shows the internal structure of the thermostat. In some preferred embodiments, the thermostat 20 includes a thermostat seat 21 and a thermostat assembly 22. The return port 20b, the inlet port 20a, and the bypass outlet 20c are disposed on the thermostat seat 21. The thermostat seat 21 also has at least one channel interface 20d, which is configured to connect at least one of the coolant return water and the air compressor return water. The thermostat assembly 22 is disposed inside the thermostat seat 21.
[0062] It is understood that the thermostat seat 21 is configured to allow the cooling medium to flow in and out, and the thermostat component is configured to control the flow direction of the cooling medium inside the thermostat seat 21. The principle of the thermostat 20 controlling the liquid flow direction is based on existing technology and will not be elaborated here. It is understood that the channel interface 20d enables the coolant return water and air compressor return water to enter the thermostat seat 21, thereby improving the applicability of the thermostat 20.
[0063] In the specific embodiment shown in the accompanying drawings, the thermostat 20 seat includes an upper seat 211 and a lower seat 212. The return port 20b is disposed on the upper seat 211, and the inlet port 20a, the bypass outlet 20c, and the channel interface 20d are disposed on the lower seat 212. The thermostat 20 includes two channel interfaces 20d, namely a coolant return water channel interface 20d and an air compressor return water channel interface 20d.
[0064] Please refer to it again. Figure 4 , Figure 5 and Figure 6 And please see Figure 7 , Figure 7yes Figure 1 The diagram shows a partial cross-sectional view of the engine system. In some preferred embodiments, the thermostat 20 includes two thermostat components 22; in some preferred embodiments, preferably, a sealing gasket 132 is provided at the connection between the outlet pipe 30 and the cylinder head water jacket 131.
[0065] It is understood that the thermostat 20 in the above embodiment includes two thermostat components 22, which greatly increases the flow area of the cooling medium inside the thermostat seat 21, thereby enabling the engine system 1 to meet the higher cooling and heat dissipation requirements of the engine 10 and the hydraulic retarder.
[0066] A sealing gasket 132 is provided at the connection between the liquid outlet pipe 30 and the cylinder head water jacket 131. It can be understood that the liquid outlet pipe 30 and the cylinder head water jacket 131 in the above embodiment are designed to be detachably connected. The setting of the sealing gasket 132 increases the airtightness of the connection between the liquid outlet pipe 30 and the cylinder head water jacket 131, making it less likely for the cooling medium of the engine system 1 to leak.
[0067] Please refer to it again. Figure 1 In some preferred embodiments, the cylinder head water jacket 131 is disposed at one end of the cylinder head 13 along the axial direction of the water pump 12, the thermostat 20 is disposed near the other end of the cylinder head 13 along the axial direction of the water pump 12, the outlet pipe 30 and the return pipe 40 are disposed along the axial direction of the water pump 12, and the inlet 12a is disposed below the cylinder head water jacket 131.
[0068] It is understood that in the above embodiment, the cylinder head water jacket 131 is located at one end of the cylinder head 13 along the axial direction of the water pump 12, the water inlet 12a is located below the cylinder head water jacket 131, and the outlet pipe 30 and return pipe 40 are arranged along the axial direction of the water pump 12. This allows the radiator to be located on one side near the axial end of the water pump 12, and the hydraulic retarder to be located on the other side near the axial end of the water pump 12. This results in a reasonable layout of the components of the engine system 1, reducing the overall size of the engine system 1.
[0069] Please refer to it again. Figure 1 and Figure 7 In some preferred embodiments, the engine 10 has a main flow channel and a return flow channel inside. The main flow channel is configured to allow the coolant entering from the inlet 12a to circulate and exchange heat, and to flow out from the cylinder head water jacket 131. The return flow channel is configured to allow the coolant that has circulated and exchanged heat in the main flow channel to flow back from the cylinder head water jacket 131 to the inlet 12a. The engine 10 is provided with a plug 133 for sealing the return flow channel.
[0070] It should be noted that engine system 1 can typically be divided into liquid-cooled quenched engine system 1 and non-liquid-cooled quenched engine system 1. The two systems have different engine 10 structures and different cooling pipe arrangements. Therefore, two types of engines 10 are usually manufactured separately according to actual needs, and two corresponding cooling pipes are designed. This means that different engines 10 need to be manufactured using separate molds, increasing the cost of design, manufacturing, and production.
[0071] To address the aforementioned technical problems, the engine 10 in the engine system 1 provided in this embodiment is equipped with a main flow channel and a return flow channel. The main flow channel is configured to allow the coolant entering from the inlet 12a to circulate and exchange heat, and then flow out from the cylinder head water jacket 131, thereby realizing the flow and heat exchange of cooling fluid within the liquid-cooled and non-liquid-cooled engine systems 1. The return flow channel allows the coolant in the non-liquid-cooled engine system 1 to flow back to the outlet for the next round of cooling and heat exchange during the small-circulation cooling mode.
[0072] The engine 10 provided by this utility model is a liquid-cooled engine 10. Therefore, a plug 133 is provided in the engine 10 to prevent the cooling medium at the outlet of the main flow channel from flowing into the return flow channel from the inlet of the return flow channel. Thus, this utility model can realize the function of a liquid-cooled engine system 1 using an engine 10 with a non-liquid-cooled structure, without the need to manufacture two different engine structures 10, achieving compatibility between the two modes of engine system 1.
[0073] Please refer to it again. Figure 1 and Figure 7 In some preferred embodiments, the cylinder head water jacket 131 has a first channel 13a and a second channel 13b inside. The first channel 13a connects the main flow channel and the outlet pipe 30, and the second channel 13b connects the return flow channel and the first channel 13a. The plug 133 blocks the communication structure 13c between the first channel 13a and the second channel 13b.
[0074] It is understood that in the above embodiment, the plug 133 is configured to block the second channel 13b inside the cylinder head water jacket 131, giving the engine system 1 the advantage of easy disassembly of the plug 133. The return passage can be blocked without opening the cylinder head 13 of the engine 10. This makes the engine system 1 in this embodiment easy to inspect and replace the plug 133.
[0075] Please refer to it again. Figure 1 and Figure 7 And please see Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of another engine system provided by this utility model; Figure 9 yes Figure 8 The diagram shows a partial cross-sectional view of the engine system. In some preferred embodiments, the first channel 13a is provided with a connection structure for installing a built-in thermostat 134; the plug 133, the return pipe 40, and the outlet pipe 30 are detachably connected to the engine 10.
[0076] It is understood that the connection structure is used to set the built-in temperature regulating element 134. When the engine 10 of the engine system 1 provided in this embodiment is applied to the non-liquid slow-release engine system 1, the built-in temperature regulating element 134 can control the flow direction of the coolant inside the engine 10.
[0077] Specifically, when the cooling system of the engine 10 is in the large circulation mode, the cooling medium flowing out from the outlet 90a of the radiator enters the main flow channel inside the engine 10 from the inlet 12a of the water pump 12 and circulates and exchanges heat in the main flow channel; the cooling medium that has passed through the pipe heat flows out to the return port 90b of the radiator under the action of the built-in thermostat 134 in the cylinder head water jacket 131, thereby realizing the large circulation of the cooling medium.
[0078] When the cooling system of engine 10 is in small circulation mode, the cooling medium flowing out from the radiator outlet 90a enters the main flow channel inside engine 10 through the water pump inlet 12a and circulates for heat exchange in the main flow channel. The cooling medium that has passed through the pipe heat exchanger is returned to the water pump inlet 12a through the return channel under the action of the built-in thermostat 134 in the cylinder head water jacket 131, thereby starting the next cooling cycle.
[0079] It is understood that the engine 10 cooling system provided in this embodiment can be disassembled, modified, and used as a non-hydraulic retarder engine 10. Specifically, the inlet pipe, the outlet pipe 30, the hydraulic retarder, the thermostat 20, the bypass pipe 50, and the plug 133 can be disassembled, and one branch of the three-way valve used to connect the bypass pipe 50 can be blocked; then, the built-in thermostat 134 can be installed on the connection structure, and the cylinder head water jacket 131 and the radiator return port 90b can be connected. This allows the engine 10 to be used in other non-hydraulic retarder engine systems 1.
[0080] The engine system 1 provided in this embodiment greatly improves the flexibility of the engine system 1 by providing a connection structure for installing a built-in temperature regulating element 134 in the first channel 13a. When the engine system 1 is recycled, it can be converted into other liquid-cooled or non-liquid-cooled engine systems 1.
[0081] The present invention also provides a vehicle comprising the engine system 1 described above.
[0082] In the aforementioned engine system 1, the return pipe 40 and the outlet pipe 30 are arranged side by side on the side wall of the cylinder head cover 14 and above the cylinder head 13, and the highest point of the return pipe 40 and the outlet pipe 30 is not higher than the highest point of the cylinder head cover 14; this makes the cooling pipe layout of the engine system 1 more reasonable and has a smaller volume, thereby making the interior space of the vehicle larger.
[0083] Those skilled in the art should understand that the above embodiments or implementation methods are for illustrative purposes only and are not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or implementation methods or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the different embodiments or implementation methods can be combined in any way.
Claims
1. An engine system, characterized in that, The engine system (1) includes: An engine (10) includes a water pump (12), a cylinder head (13) and a cylinder head cover (14), the water pump (12) having an inlet (12a) for coolant to enter, and a cylinder head water jacket (131) for coolant to flow out inside the cylinder head (13); A hydraulic retarder, the inlet (80a) of which is connected to the cylinder head water jacket (131) via an outlet pipe (30); The radiator has its outlet (90a) connected to its inlet (12a), and its return port (90b) connected to the outlet (80b) of the hydraulic retarder via a return pipe (40). The return pipe (40) and the outlet pipe (30) are arranged side by side on the side wall of the cylinder head cover (14) and above the cylinder head (13), such that the highest point of the return pipe (40) and the outlet pipe (30) is not higher than the highest point of the cylinder head cover (14).
2. The engine system according to claim 1, characterized in that, The engine system (1) further includes a thermostat (20), which has an inlet (20a), a return port (20b), and a bypass outlet (20c). The inlet (20a) is connected to the outlet (80b) of the hydraulic retarder, the return port (20b) is connected to the return port (90b) of the radiator through a return pipe (40), and the bypass outlet (20c) is connected to the outlet (90a) of the radiator and the inlet (12a) through a three-way pipe (60).
3. The engine system according to claim 2, characterized in that, The engine system (1) further includes a pipe support (70) that secures the outlet pipe (30) and the return pipe (40) to each other; and / or The bypass outlet (20c) is connected to a bypass pipe (50), and the bypass pipe (50) is connected to the liquid outlet (90a) of the radiator and the water inlet (12a) through a three-way pipe (60).
4. The engine system according to claim 2, characterized in that, The thermostat (20) includes: A thermostat seat (21) is provided with the return port (20b), the inlet port (20a), and the bypass outlet (20c). The thermostat seat (21) also has at least one channel interface (20d), configured to connect at least one of the coolant return water and the air compressor return water. Temperature-regulating assembly (22) is disposed inside the temperature-regulating seat (21).
5. The engine system according to claim 4, characterized in that, The thermostat (20) includes two of the thermostat components (22); and / or A sealing gasket (132) is provided at the connection between the liquid outlet pipe (30) and the cylinder head water jacket (131).
6. The engine system according to any one of claims 2-5, characterized in that, The cylinder head water jacket (131) is located at one end of the cylinder head (13) along the axial direction of the water pump (12), the thermostat (20) is located at the other end of the cylinder head (13) along the axial direction of the water pump (12), the outlet pipe (30) and the return pipe (40) are located along the axial direction of the water pump (12), and the inlet (12a) is located below the cylinder head water jacket (131).
7. The engine system according to any one of claims 1-5, characterized in that, The engine (10) has a main flow channel and a return flow channel inside. The main flow channel is configured to allow the coolant entering from the inlet (12a) to circulate and exchange heat and flow out from the cylinder head water jacket (131). The return flow channel is configured to allow the coolant that has circulated and exchanged heat in the main flow channel to flow back from the cylinder head water jacket (131) to the inlet (12a). The engine (10) is provided with a plug (133) for sealing the return flow channel.
8. The engine system according to claim 7, characterized in that, The cylinder head water jacket (131) has a first channel (13a) and a second channel (13b) inside. The first channel (13a) connects the main flow channel and the outlet pipe (30), and the second channel (13b) connects the return flow channel and the first channel (13a). The plug (133) blocks the connection structure (13c) between the first channel (13a) and the second channel (13b).
9. The engine system according to claim 8, characterized in that, The first channel (13a) is provided with a connection structure for installing a built-in thermostat (134); The plug (133), the return pipe (40), and the outlet pipe (30) are detachably connected to the engine (10).
10. A vehicle, characterized in that, The vehicle includes an engine system (1) according to any one of claims 1-9.