Cooling liquid circulation system and vehicle
By designing a coolant circulation system including heating pipe assembly and coolant heater, the problem of difficulty in starting the diesel engine and high fuel consumption in low temperature environments is solved, and the oil pan is heated efficiently, reducing fuel consumption and wear are improved. Engine cooling efficiency.
Patent Information
- Application Number
- CN202420638438.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Diesel engines have difficulty starting in low temperature environments and high fuel consumption. The reason is that the oil viscosity increases and the fluidity becomes worse, resulting in increased engine starting resistance and difficulty in starting. The oil circulation after the engine starts is not smooth, and the fuel consumption increases, resulting in abnormal wear.
Design a coolant circulation system, including heating pipe assembly and coolant heater, and control and switch the flow route of the coolant by setting up a communication pipe and a shut-off valve, and heat the coolant by heating the coolant and introducing the oil pan into melting. Engine oil reduces the difficulty of starting the engine, and after the engine starts, the oil pan is heated by the engine itself to ensure the melting state of the engine oil.
It effectively reduces the difficulty of starting the engine, improves the oil circulation efficiency, reduces fuel consumption and engine wear, improves the engine cooling efficiency and saves power consumption.
Smart Images
Figure CN222436457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vehicles, in particular to a cooling liquid circulation system and a vehicle. Background Art
[0002] Diesel drive has large output torque, high thermal efficiency and good fuel economy. Under the same displacement, diesel vehicles have more power when starting and climbing, and are more suitable for heavy vehicles. Secondly, diesel is a relatively clean fuel, especially in transportation, agriculture, construction, engineering and power generation. In addition, diesel engines have a simple structure, low maintenance costs, and will not ignite when exposed to open flames at normal temperature and pressure, and are more stable.
[0003] However, vehicles equipped with diesel engines running in low-temperature environments generally have difficulty starting and high fuel consumption after starting. The reason is that at low temperatures, the viscosity of the engine oil increases and its fluidity deteriorates, resulting in increased engine starting resistance and difficulty starting.
[0004] In this regard, the method of heating the engine coolant is usually adopted to increase the cylinder temperature and reduce the difficulty of starting. However, due to the lack of coolant circulation pipeline in the oil pan, the oil pan is still in a low temperature state when the engine is started, the oil viscosity is large, and the gear pump has difficulty in absorbing the oil, making it difficult for the engine to start. At the same time, after the engine is started, the oil in the oil pan is basically still in a condensed state. The condensed oil in the oil pan can only be melted by the oil return. The melting efficiency is low in a severe cold environment, resulting in poor oil circulation after the engine is started, increased fuel consumption, abnormal wear of the crankshaft, piston, etc., and even bending and breaking of the crankshaft in severe cases. Utility Model Content
[0005] Aiming at the problem that the oil in the oil pan is melted only by circulating oil return heating, the heating efficiency is low and the circulation is not smooth, the utility model provides a coolant circulation system capable of heating the oil pan.
[0006] In order to solve the above problems, the technical solution adopted by the utility model is a coolant circulation system, including a heating pipe assembly for an engine cooling system and heating an oil pan, and also including a coolant heater, a first connecting port and a second connecting port are opened on the engine cooling system, the first connecting port is connected to the first port of the coolant heater through a return pipe, the second connecting port is connected to one end of the heating pipe assembly through a liquid outlet pipe, and the other end of the heating pipe assembly is connected to the second port of the coolant heater through a liquid supply pipe, and a connecting pipe is also provided between the return pipe and the liquid supply pipe; a first stop valve is provided on the return pipe, the first stop valve is located between the interface of the connecting pipe and the coolant heater, a second stop valve is provided on the liquid supply pipe, the second stop valve is located between the interface of the connecting pipe and the coolant heater, and a third stop valve is provided on the connecting pipe. This solution realizes the control and switching of the flow route of the coolant under different driving conditions by setting a connecting pipe, and setting stop valves on the liquid supply pipe, the connecting pipe and the return pipe respectively, so as to realize the efficient heating of the oil pan, save the flow stroke of the coolant, improve the cooling efficiency of the engine and save power consumption.
[0007] Preferably, the first port of the coolant heater is a liquid outlet, and the second port of the coolant heater is a liquid inlet.
[0008] Preferably, a one-way valve is further provided on the connecting pipe; and a one-way valve is provided on the liquid return pipe and / or the liquid outlet pipe and / or the liquid supply pipe.
[0009] Preferably, the heating tube assembly and the coolant heater are connected to a small loop of the engine circulation system.
[0010] On the other hand, the utility model further provides a vehicle, comprising an oil pan and the above-mentioned coolant circulation system, wherein the heating pipe assembly is located at the bottom of the oil pan.
[0011] Preferably, the heating tube assembly includes a heating tube body and fixed joints located at both ends of the heating tube body, the heating tube body is a U-shaped tube, the fixed joints are fixedly connected to the side wall of the oil pan and pass through to the outside of the oil pan, and the liquid outlet pipe and the liquid supply pipe are respectively connected to the two fixed joints.
[0012] Preferably, an oil suction pipe is provided inside the oil pan, and the bending part of the heating pipe body surrounds the pipe opening of the oil suction pipe. Heat is more concentrated at the oil suction opening, ensuring smooth oil suction.
[0013] Preferably, a support block is further provided on the bottom surface of the oil pan, and the support block is fixedly connected to the heating pipe body, so as to improve the fixing effect of the heating pipe assembly in the oil pan and prevent the fixing structure from loosening and being damaged when the vehicle vibrates during driving.
[0014] Preferably, at least one spacer is provided on the heating tube body, and two ends of the spacer are respectively fixedly connected to the two straight tube sections of the heating tube body, thereby increasing the overall strength of the heating tube body.
[0015] Preferably, the fixed joint comprises a joint pipe, and a stopper and a locking nut are provided on the outer periphery of the joint pipe, and the stopper and the locking nut cooperate to clamp the side wall of the oil pan.
[0016] It can be seen from the above technical scheme that the advantages of the utility model are: before the engine is started, the system can introduce the coolant heated by the coolant heater into the oil pan to melt the engine oil, thereby reducing the difficulty of engine starting. At the same time, after the engine is started, the shut-off valve is controlled to switch to the engine small cycle, and the oil pan is heated by the engine's own heat to ensure that the engine oil in the oil pan is always in a melted state at low temperatures, thereby reducing abnormal wear and fuel consumption of the engine; the system has a reasonable structural design and can focus on heating the oil suction port to ensure smooth oil suction. At the same time, the heating tube assembly has high structural strength and is firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.
[0019] Figure 2 This is a structural schematic diagram of a heating tube assembly according to an embodiment of the utility model.
[0020] Description of main reference numerals
[0021] 1. Heating tube assembly, 1-1. Heating tube body, 1-2. Fixed joint, 2. Engine cooling system, 3. Coolant heater, 4. Liquid return pipe, 5. Liquid outlet pipe, 6. Liquid supply pipe, 7. Connecting pipe, 8. First stop valve, 9. Second stop valve, 10. Third stop valve, 11. Oil pan, 12. Support block, 13. Spacer, 14. Oil suction pipe. DETAILED DESCRIPTION
[0022] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0023] Embodiment 1
[0024] like Figure 1 , 2 As shown, a coolant circulation system includes a heating pipe assembly 1 for an engine cooling system 2 and for heating an oil pan, and also includes a coolant heater 3. A first connecting port 2-1 and a second connecting port 2-2 are provided on the small circulation of the engine cooling system 2. The first connecting port 2-1 is connected to the first port of the coolant heater 3 through a return pipe 4. The first port of the coolant heater 3 is a liquid outlet. The second connecting port 2-2 is connected to one end of the heating pipe assembly 1 through a liquid outlet pipe 5. The other end of the heating pipe assembly is connected to the second port of the coolant heater through a liquid supply pipe 6. The second port of the coolant heater 3 is a liquid inlet. A connecting pipe 7 is also provided between the return pipe 4 and the supply pipe 6. A first stop valve 8 is provided on the return pipe 4, and the first stop valve 8 is located between the interface of the connecting pipe 7 and the coolant heater 3. A second stop valve 9 is provided on the supply pipe 6, and the second stop valve 9 is located between the interface of the connecting pipe 7 and the coolant heater 3. A third stop valve 10 is provided on the connecting pipe 7.
[0025] A one-way valve may be further provided on the connecting pipe 7, the liquid outlet pipe 5 and the liquid supply pipe 6 to prevent the coolant from flowing back.
[0026] Embodiment 2
[0027] Based on the coolant circulation system provided in the first embodiment, this embodiment further provides a vehicle, including an oil pan 11 and the coolant circulation system described in the first embodiment, wherein an oil suction pipe 9 is provided inside the oil pan 11, the heating pipe assembly 1 is located at the bottom of the oil pan 11, the heating pipe assembly 1 includes a heating pipe body 1-1 and fixed joints 1-2 located at both ends of the heating pipe body 1-1, the fixed joints are fixedly connected to the side walls of the oil pan 11 and pass through to the outside of the oil pan 11, the liquid outlet pipe 5 and the liquid supply pipe 6 are respectively connected to the two fixed joints 1-2, The fixed joint 1-2 includes a joint pipe, the outer periphery of which is provided with a stopper and a locking nut, the stopper and the locking nut cooperate to clamp the side wall of the oil pan, the heating tube body 1-1 is a U-shaped tube, the bending part of the heating tube body 1-1 surrounds the pipe mouth of the oil suction pipe 9, and the bottom surface of the oil pan 11 is also provided with a support block 12, the support block 12 is fixedly connected to the heating tube body 1-1, and at least one spacing piece 13 is also provided on the heating tube body 1-1, and the two ends of the spacing piece 13 are respectively fixedly connected to the two straight pipe sections of the heating tube body 1-1.
[0028] The working process of the utility model is as follows: before the vehicle engine is started, the circulating pump in the coolant heater is started, and the first stop valve 8 and the second stop valve 9 are opened, and the third stop valve 10 is closed. At this time, the coolant passes through the coolant heater 3, and then enters the heating pipe assembly 1 to heat the engine oil in the oil pan, and then flows into the engine cooling system to heat the engine cylinder. At this time, the lubricating oil can be melted and the engine cylinder can be heated to make the engine easier to start; after the engine is started, the cylinder temperature rises rapidly, and then the first and second stop valves can be closed, the third stop valve can be opened, the coolant heater is cut off, and the engine heat is used to heat the coolant to heat the oil pan oil.
[0029] It can be seen from the above embodiments that the beneficial effect of the utility model is that the system can introduce the coolant heated by the coolant heater into the engine cylinder and the oil pan to melt the engine oil before the engine starts, thereby reducing the difficulty of starting the engine. At the same time, after the engine starts, the oil pan is heated by the heat of the engine itself through the control of the stop valve, ensuring that the oil in the oil pan is always in a melted state at low temperatures, thereby reducing abnormal wear and fuel consumption of the engine; the structure of the system is reasonably designed, and the oil suction port can be focused on heating to ensure smooth oil suction. At the same time, the heating pipe assembly has high structural strength and is firmly installed.
[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A coolant circulation system, comprising a cooling system (2) for an engine and a heating pipe assembly (1) for heating an oil pan, characterized in that: It also includes a coolant heater (3), wherein a first connecting port (2-1) and a second connecting port (2-2) are provided on the engine cooling system (2), wherein the first connecting port (2-1) is connected to the first port of the coolant heater (3) via a liquid return pipe (4), the second connecting port (2-2) is connected to one end of the heating tube assembly (1) via a liquid outlet pipe (5), and the other end of the heating tube assembly is connected to the second port of the coolant heater via a liquid supply pipe (6), and a connecting pipe (7) is further provided between the liquid return pipe (4) and the liquid supply pipe (6); The return pipe (4) is provided with a first stop valve (8), the first stop valve (8) being located between the interface of the connecting pipe (7) and the coolant heater (3); the supply pipe (6) is provided with a second stop valve (9), the second stop valve (9) being located between the interface of the connecting pipe (7) and the coolant heater (3); and the connecting pipe (7) is provided with a third stop valve (10).
2. The coolant circulation system according to claim 1, characterized in that: The first port of the coolant heater (3) is a liquid outlet, and the second port of the coolant heater (3) is a liquid inlet.
3. The coolant circulation system according to claim 1, characterized in that: The connecting pipe (7) is also provided with a one-way valve; the liquid return pipe (4) and / or the liquid outlet pipe (5) and / or the liquid supply pipe (6) are also provided with a one-way valve.
4. The coolant circulation system according to claim 1, characterized in that: The heating tube assembly and the coolant heater are connected to a small circulation of an engine circulation system.
5. A vehicle, comprising an oil pan (11), characterized in that: It comprises a coolant circulation system as claimed in any one of claims 1 to 4, wherein the heating tube assembly (1) is located at the bottom of the oil pan (11).
6. The vehicle according to claim 5, characterized in that The heating tube assembly (1) comprises a heating tube body (1-1) and fixed joints (1-2) located at both ends of the heating tube body (1-1); the heating tube body (1-1) is a U-shaped tube; the fixed joints are fixedly connected to the side wall of the oil pan (11) and pass through to the outside of the oil pan (11); the liquid outlet pipe (5) and the liquid supply pipe (6) are respectively connected to the two fixed joints (1-2).
7. The vehicle according to claim 6, characterized in that An oil suction pipe (14) is provided inside the oil pan (11), and the bending part of the heating pipe body (1-1) surrounds the pipe opening of the oil suction pipe (14).
8. The vehicle according to claim 6, characterized in that A support block (12) is also provided on the bottom surface of the oil pan (11), and the support block (12) is fixedly connected to the heating pipe body (1-1).
9. The vehicle according to claim 6, characterized in that At least one spacer (13) is also provided on the heating tube body (1-1), and two ends of the spacer (13) are respectively fixedly connected to two straight tube sections of the heating tube body (1-1).
10. The vehicle according to claim 6, characterized in that The fixed joint (1-2) comprises a joint pipe, the outer periphery of which is provided with a stopper and a locking nut, the stopper and the locking nut cooperate to clamp the side wall of the oil pan.