Engine stand exhaust
By installing an auxiliary water tank and circulating water circuit on the engine test bench, the problems of cylinder water jacket boiling and leakage caused by poor exhaust were solved, ensuring timely gas removal and enabling the normal conduct of durability tests.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGLING MOTORS
- Filing Date
- 2025-05-20
- Publication Date
- 2026-06-02
AI Technical Summary
The existing engine test bench has different operating conditions than the vehicle, which leads to poor exhaust, causing the cylinder block water jacket to boil and increasing cylinder head gasket leakage.
Auxiliary water tank 1 and auxiliary water tank 2 are installed at a cylinder head height of 500mm. Through the water and air circulation design, the coolant is ensured to fill the engine. The coolant is circulated through the thermostat, cylinder block water jacket, cylinder head water jacket and radiator. The gas is discharged in time by gravity to avoid bench boiling and reduce leakage.
This ensured the timely removal of gases from the engine test bench, preventing cylinder head gasket leaks and guaranteeing the smooth conduct of the durability test.
Smart Images
Figure CN224317311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine test bench technology, specifically to an engine test bench exhaust device. Background Technology
[0002] When using an engine test bench, an exhaust system is usually added to discharge the gases generated on the test bench, in order to prevent cylinder block and cylinder head failure due to poor exhaust.
[0003] However, most existing test benches only set up engine exhaust ports according to the exhaust structure of the whole vehicle. However, due to the inconsistency between the test bench and the whole vehicle, the test bench has the problem of unsmooth exhaust. When the engine test bench is in use, it is always under high load, which can cause the water jacket in the test bench to boil, resulting in increased cylinder head gasket leakage. Therefore, an engine test bench exhaust device is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an engine bench exhaust device. This solves the problem that most existing benches simply set up engine exhaust ports according to the exhaust structure of the vehicle. However, due to the inconsistency between the bench's operating conditions and those of the vehicle, exhaust is not smooth. Furthermore, when the engine bench is in use, it is constantly under heavy load, which can lead to boiling of the water jacket within the bench and increased cylinder head gasket leakage.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An engine bench exhaust device includes a water pump, a thermostat, a cylinder block water jacket, and a radiator. The water pump is connected to the thermostat via a pipeline, the thermostat is connected to the cylinder block water jacket via a pipeline, the cylinder block water jacket is connected to the cylinder head water jacket via a pipeline, the cylinder head water jacket is connected to the radiator via a pipeline, and the radiator is connected to the water pump via a return water pipe. An auxiliary water tank 1 and an auxiliary water tank 2 are installed at a cylinder head height of 500mm.
[0006] Preferably, the bottom of the auxiliary water tank 1 and the auxiliary water tank 2 are provided with a drain outlet, the drain outlet is connected to a drain pipe, and the drain pipe is connected to the water pump inlet.
[0007] Preferably, the angle between the drain pipe of the auxiliary water tank 1 and the drain pipe of the auxiliary water tank 2 is set to 90°, and the inner diameter of the two drain pipes is greater than or equal to φ6.
[0008] Preferably, an exhaust port is provided at the highest point of the front and rear ends of the cylinder head water jacket, and the exhaust ports are connected to the auxiliary water tank 1 and the auxiliary water tank 2 respectively through exhaust pipes.
[0009] Preferably, an exhaust vent is provided at the highest point of the radiator, the exhaust vent is located at the inlet of the radiator, and the exhaust vent is connected to the auxiliary water tank 2 through an exhaust pipe.
[0010] Preferably, the auxiliary water tank 1 has one air inlet hole, and the auxiliary water tank 2 has two air inlets, both of which are located above the liquid surface in the auxiliary water tank.
[0011] Preferably, the air inlets on the auxiliary water tank 1 and the auxiliary water tank 2 are throttled by φ2.
[0012] Preferably, the auxiliary water tank 1 and the auxiliary water tank 2 are connected in parallel.
[0013] Preferably, the water and air circuits of the test bench form a water exhaust circulation system.
[0014] This utility model discloses an engine bench exhaust device, which has the following beneficial effects:
[0015] The engine bench exhaust system, by setting auxiliary water tanks 1 and 2 at a cylinder head height of 500mm, allows the engine to be filled with coolant under the influence of gravity. After being pressurized by the water pump, the coolant passes through the thermostat, then enters the cylinder block water jacket, cylinder head water jacket, radiator, and finally returns to the water pump inlet to form a water circuit circulation. The water circuit and air circuit together form the bench's water circuit exhaust circulation, ensuring timely gas removal and guaranteeing normal durability testing. The two parallel auxiliary water tanks have a sufficiently large capacity to store the gas exhausted from the engine. The two auxiliary water tanks work together without affecting each other, avoiding increased leakage due to bench boiling. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a diagram of the water venting device on the test bench in this embodiment. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] This application provides an engine test bench exhaust device, which solves the problem that most existing test benches only set the engine exhaust port according to the exhaust structure of the whole vehicle. However, due to the inconsistency between the test bench operating conditions and the whole vehicle, the test bench has problems with unsmooth exhaust. When the engine test bench is in use, it is always under heavy load, which can lead to boiling of the water jacket in the test bench and increased cylinder head gasket leakage. By setting auxiliary water tank 1 and auxiliary water tank 2 at a cylinder head height of 500mm, the coolant fills the engine under the action of gravity. After being pressurized by the water pump, the coolant passes through the thermostat, then enters the cylinder block water jacket, cylinder head water jacket, radiator, and finally returns to the water pump inlet to form a water circuit circulation. The water circuit and the air circuit form the water circuit exhaust circulation of the test bench, which can ensure the timely removal of gas and ensure normal durability testing.
[0020] The two parallel auxiliary water tanks have a large enough capacity to store the exhaust gas from the engine. The two auxiliary water tanks work together without affecting each other, avoiding the possibility of increased leakage due to bench boiling.
[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0022] This utility model discloses an engine bench exhaust device.
[0023] Example 1:
[0024] According to the appendix Figure 1 As shown, it includes a water pump, a thermostat, a cylinder block water jacket, and a radiator. The water pump is connected to the thermostat via a pipeline, the thermostat is connected to the cylinder block water jacket via a pipeline, the cylinder block water jacket is connected to the cylinder head water jacket via a pipeline, the cylinder head water jacket is connected to the radiator via a pipeline, and the radiator is connected to the water pump via a return water pipe. Auxiliary water tank 1 and auxiliary water tank 2 are installed at a height of 500mm from the cylinder head.
[0025] By setting auxiliary water tank 1 and auxiliary water tank 2 at a cylinder head height of 500mm, the engine is filled with coolant under the action of gravity;
[0026] After being pressurized by the water pump, the coolant passes through the thermostat, then enters the cylinder block water jacket, cylinder head water jacket, radiator, and finally returns to the water pump inlet to form a water circulation loop.
[0027] The water pump is connected to the inlet / outlet of the cooling jacket piping in the high-temperature area of the exhaust system via a flange or quick connector.
[0028] Both auxiliary water tank 1 and auxiliary water tank 2 have drain outlets at their bottoms, which are connected to drain pipes that are connected to the water pump inlet. During the venting process in the venting pipe, some water is discharged into the auxiliary water tanks, so a drain pipe is led out from the bottom of the auxiliary water tanks to the water pump inlet.
[0029] The drain pipes of auxiliary water tank 1 and auxiliary water tank 2 are angled at 90°. This is to reduce drainage resistance and prevent the drain pipes of auxiliary water tank 1 and auxiliary water tank 2 from colliding.
[0030] The inner diameter of the two drain pipes is greater than or equal to φ6. The purpose of this is to reduce the flow resistance of the return water pipe and increase the pressure at the inlet of the water pump.
[0031] A vent is provided at the highest point of the front and rear ends of the cylinder head water jacket. The vent is connected to the auxiliary water tank 1 and the auxiliary water tank 2 respectively through the vent pipe. It is used to vent air to the auxiliary water tank 1 and the auxiliary water tank 2.
[0032] An exhaust vent is installed at the highest point of the radiator. The exhaust vent is located at the radiator inlet and is connected to the auxiliary water tank 2 via an exhaust pipe. It is used to exhaust air into the auxiliary water tank 2 to prevent water from consuming heat during the warm-up process.
[0033] A corresponding air inlet is provided on auxiliary water tank 1, and two corresponding air inlets are provided on auxiliary water tank 2. Both air inlets are located above the liquid level in the auxiliary water tanks, which is for the purpose of better venting.
[0034] The air inlets on auxiliary water tank 1 and auxiliary water tank 2 are throttled at φ2 to reduce water flow, since the water does not pass through the radiator and therefore does not have a cooling effect.
[0035] Auxiliary water tank 1 and auxiliary water tank 2 are connected in parallel and do not affect each other. They return water to the water pump inlet together, so the pressure of auxiliary water tank 1 and auxiliary water tank 2 is basically the same, and the liquid level in the auxiliary water tank is automatically adjusted.
[0036] The two parallel auxiliary water tanks have a large enough capacity to store the exhaust gas from the engine. The two auxiliary water tanks work together without affecting each other, avoiding the possibility of increased leakage due to bench boiling.
[0037] The water and air circuits form a water exhaust circulation system on the test bench, which ensures timely removal of gas and guarantees normal operation of the durability test.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An engine bench exhaust device, characterized in that, It includes a water pump, a thermostat, a cylinder block water jacket, and a radiator. The water pump is connected to the thermostat via a pipeline. The thermostat is connected to the cylinder block water jacket via a pipeline. The cylinder block water jacket is connected to the cylinder head water jacket via a pipeline. The cylinder head water jacket is connected to the radiator via a pipeline. The radiator is connected to the water pump via a return water pipe. Auxiliary water tank 1 and auxiliary water tank 2 are installed at a height of 500mm from the cylinder head.
2. The engine bench exhaust device according to claim 1, characterized in that, The bottom of the auxiliary water tank 1 and auxiliary water tank 2 are provided with drain outlets, which are connected to drain pipes, and the drain pipes are connected to the water pump inlet.
3. The engine bench exhaust device according to claim 1, characterized in that, The angle between the drain pipe of the auxiliary water tank 1 and the drain pipe of the auxiliary water tank 2 is set to 90°, and the inner diameter of the two drain pipes is greater than or equal to φ6.
4. The engine bench exhaust device according to claim 1, characterized in that, The cylinder head water jacket has an exhaust port at the highest point of both the front and rear ends, and the exhaust ports are connected to the auxiliary water tank 1 and the auxiliary water tank 2 respectively through exhaust pipes.
5. An engine bench exhaust device according to claim 1, characterized in that, An exhaust vent is provided at the highest point of the radiator, located at the inlet of the radiator, and connected to the auxiliary water tank 2 via an exhaust pipe.
6. The engine bench exhaust device according to claim 1, characterized in that, The auxiliary water tank 1 has one air inlet, and the auxiliary water tank 2 has two air inlets, both of which are located above the liquid level in the auxiliary water tank.
7. An engine bench exhaust device according to claim 1, characterized in that, The air inlets on the auxiliary water tank 1 and the auxiliary water tank 2 are throttled by φ2.
8. An engine bench exhaust device according to claim 1, characterized in that, The auxiliary water tank 1 and auxiliary water tank 2 are connected in parallel.
9. An engine bench exhaust device according to claim 1, characterized in that, The water and air circuits form the water exhaust circulation system of the test bench.