Engine assembly for vehicle, bent-through system and vehicle

Abstract

The invention discloses an engine assembly used for a vehicle, a bent-through system and the vehicle, and relates to the technical field of engines, the engine assembly comprises an engine, the engine is provided with a cylinder cover and an oil-gas separator, and the oil-gas separator is provided with a gas outlet part; the gas outlet part is configured to be communicated with a gas inlet manifold of the engine so as to convey gas separated by the oil-gas separator to the engine, and at least part of the gas outlet part is arranged in the cylinder cover. At least part of the gas outlet part of the oil-gas separator is arranged in the cylinder cover, the gas outlet pipe can be heated through heat of the engine, the risk that gas in the gas outlet pipe is frozen in a low-temperature environment is effectively reduced, the cold start speed of the engine is increased, and the situation that a heater is independently arranged for heating the gas outlet part is avoided; and therefore, the manufacturing cost and the operation cost of the vehicle are reduced.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to an engine assembly, a drive system, and a vehicle for use in vehicles. Background Technology

[0002] In related technologies, the outlet of the oil-gas separator in the existing through-flow system is located outside the engine. In low-temperature environments, the outlet is prone to icing, which not only requires a separate heating structure for heating, resulting in higher costs, but also leads to slower cold starts of the engine. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an engine assembly for a vehicle that can heat the exhaust pipe using the engine's own heat, effectively reducing the risk of gas freezing in the exhaust pipe at low temperatures, thus improving the engine's cold start speed. It also avoids the need for a separate heater to heat the exhaust section, reducing vehicle manufacturing and operating costs.

[0004] The present invention further proposes a bypass system having the above-described engine components.

[0005] The present invention further proposes a vehicle having the above-mentioned tortuous system.

[0006] An engine assembly for a vehicle according to an embodiment of the present invention includes: An engine, which has a cylinder head; An oil-gas separator having an outlet configured to communicate with the engine's intake manifold to deliver the gas separated by the oil-gas separator to the engine, at least a portion of the outlet being located within the cylinder head.

[0007] According to an embodiment of the present invention, an engine assembly for a vehicle, by disposing at least a portion of the outlet of the oil-gas separator within the cylinder head, can heat the outlet pipe using the engine's own heat, effectively reducing the risk of the gas in the outlet pipe freezing in a low-temperature environment. This is beneficial for improving the engine's cold start speed and also avoids the need to separately heat the outlet, thereby reducing the vehicle's manufacturing and operating costs.

[0008] According to some embodiments of the present invention, the engine assembly further includes: an oil return line, the oil return line connecting the crankcase of the engine and the oil outlet of the oil-gas separator, and the oil return line is provided with an oil return valve, the distance between the oil return valve and the oil-gas separator being greater than the distance between the oil return valve and the engine.

[0009] According to some embodiments of the present invention, the oil-gas separator further comprises a separator body and a one-way valve, the separator body having an outlet connected to an outlet section, and the one-way valve being disposed at the outlet.

[0010] According to some embodiments of the present invention, the separator body includes: a water storage structure defining a water storage cavity, the water storage structure being located between the air outlet and the air outlet section, so that the water storage cavity communicates with the air outlet and the air outlet section.

[0011] According to some embodiments of the present invention, there are multiple water storage cavities, which are connected in series sequentially.

[0012] According to some embodiments of the present invention, the water storage structure has a drain outlet that is connected to the water storage cavity and can be opened or closed.

[0013] According to some embodiments of the present invention, the separator body has an oil outlet, and the oil outlet and the gas outlet are located on the same side of the separator body.

[0014] According to some embodiments of the present invention, the exhaust portion includes a plurality of exhaust pipes, at least a portion of each exhaust pipe being disposed within the cylinder head.

[0015] The bypass system according to an embodiment of the present invention includes the engine assembly for a vehicle described in the above embodiments.

[0016] The vehicle according to an embodiment of the present invention includes the bypass system described above.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the oil-gas separator according to an embodiment of the present invention; Figure 2 This is another structural schematic diagram of the oil-gas separator according to an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the engine assembly according to an embodiment of the present invention.

[0019] Figure label: Engine assembly 100; Oil-gas separator 10; separator body 11; one-way valve 12; air outlet 13; air inlet 14; Gas outlet 20; Oil outlet 21; Return oil line 30; Return oil valve 31; Water storage structure 40. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following is for reference. Figures 1-3 An engine assembly 100, a drive system, and a vehicle for use according to embodiments of the present invention are described.

[0022] An engine assembly 100 for a vehicle according to an embodiment of the present invention includes: An engine, which has a cylinder head; The oil-gas separator 10 has an outlet 20 configured to communicate with the intake manifold of the engine to deliver the gas separated by the oil-gas separator 10 to the engine. At least a portion of the outlet 20 is located inside the cylinder head.

[0023] When the engine is running, the high-temperature, high-pressure gas in the combustion chamber can seep into the crankcase through the gap between the piston rings and the cylinder wall, forming an oil-gas mixture (blow-by gas). The oil-gas separator 10 can separate the oil vapor from the gas through physical means (such as labyrinth type, centrifugal type, filter type, etc.), allowing the oil to flow back to the oil pan (crankcase) and preventing it from being discharged with the exhaust gas.

[0024] The oil-gas separator 10 has an outlet section 20, which discharges excess gas to achieve a near-equilibrium pressure in the crankcase with atmospheric pressure, reducing the risk of oil leakage and optimizing engine power output. The outlet section 20 is configured to connect to the engine's intake manifold to deliver the gas separated by the oil-gas separator 10 to the engine, reducing air pollution and improving fuel efficiency.

[0025] The exhaust portion 20 may include structures such as an exhaust pipe. At least a portion of the exhaust portion 20 is located within the cylinder head. In some embodiments of the present invention, the exhaust portion 20 may be entirely located within the cylinder head, or half of the exhaust portion 20 may be located within the cylinder head. However, the present invention is not limited to this, and the exhaust portion 20 may also be located in other proportions within the cylinder head, as long as at least a portion of the exhaust portion 20 is located within the cylinder head. As a specific embodiment of the present invention, the exhaust portion 20 is entirely located within the cylinder head. When the engine is running, it generates heat. The exhaust portion 20 being located within the cylinder head can absorb the heat generated by the engine, preventing the gas within the exhaust portion 20 from freezing in low-temperature environments. This is beneficial for improving the cold start speed of the engine and also avoids the need to separately heat the exhaust portion 20, reducing the manufacturing and operating costs of the vehicle.

[0026] According to an embodiment of the present invention, the engine assembly 100 for a vehicle can heat the exhaust pipe by placing at least a portion of the exhaust portion 20 of the oil-gas separator 10 inside the cylinder head, thereby effectively reducing the risk of the gas in the exhaust pipe freezing in a low-temperature environment. This is beneficial for improving the cold start speed of the engine and also avoids the need to separately heat the exhaust portion 20, thus reducing the manufacturing and operating costs of the vehicle.

[0027] According to some embodiments of the present invention, such as Figure 1 As shown, the engine assembly 100 also includes an oil return line 30, which connects the crankcase of the engine and the oil outlet 21 of the oil-gas separator 10. The oil return line 30 is provided with an oil return valve 31, and the distance between the oil return valve 31 and the oil-gas separator 10 is greater than the distance between the oil return valve 31 and the engine.

[0028] The oil return line 30 connects the crankcase of the engine and the oil outlet 21 of the oil separator 10, so that the oil separated by the oil separator 10 flows back to the crankcase through the oil return line. This can significantly reduce the amount of oil entering the engine combustion chamber, reduce wear between the piston rings and cylinder walls, extend the oil change cycle, reduce the user's operating costs, and also prevent the oil from being contaminated by high-temperature exhaust gas, maintain the cleanliness and lubrication performance of the oil, and reduce the need for early replacement due to oil deterioration.

[0029] Furthermore, the oil return line 30 is equipped with an oil return valve 31. The distance between the oil return valve 31 and the oil-gas separator 10 is greater than the distance between the oil return valve 31 and the engine. This can extend the oil return distance, ensure that the separated oil is discharged from the oil-gas separator 10 in a timely manner, avoid the oil level being too high and affecting the separation efficiency, improve the oil return efficiency, and prevent the oil from accumulating in the oil-gas separator 10.

[0030] According to some embodiments of the present invention, such as Figure 2As shown, the oil-gas separator 10 also has a separator body 11 and a one-way valve 12. The separator body 11 has an outlet 13, which is connected to the outlet section 20. The one-way valve 12 is located at the outlet 13.

[0031] The oil-gas separator 10 also includes a separator body 11 and a one-way valve 12. The separator body 11 has an outlet 13, which is connected to the outlet section 20 to discharge the gas separated by the oil-gas separator 10 into the outlet section 20. The one-way valve 12 is located at the outlet 13 to allow the gas to be discharged unidirectionally from the outlet 13 into the outlet section 20. This prevents the gas from flowing back into the oil-gas separator 10 and also prevents the gas from accumulating at the outlet 13. It reduces the risk of the outlet 13 freezing in low-temperature environments, thereby reducing the risk of insufficient engine intake and protecting the turbocharger and engine, extending their service life.

[0032] According to some embodiments of the present invention, such as Figure 3 As shown, the separator body 11 includes: a water storage structure 40, which defines a water storage chamber. The water storage structure 40 is located between the air outlet 13 and the air outlet 20 so that the water storage chamber is connected to the air outlet 13 and the air outlet 20.

[0033] The water storage structure 40 can be constructed as a cover structure, which is integrated into the air outlet 13 of the oil-gas separator 10. The water storage structure 40 defines a water storage chamber and is located between the air outlet 13 and the air outlet 20, so that the water storage chamber connects the air outlet 13 and the air outlet 20. This allows the water in the gas to be stored in the water storage chamber, preventing the water from entering the engine with the gas and emulsifying with the engine oil. This avoids the reduction of engine oil viscosity and lubrication performance, thereby improving the safety and reliability of the bypass system.

[0034] Furthermore, a water-capturing structure can be installed inside the water storage chamber to capture and retain moisture in the gas within the water storage chamber.

[0035] According to some embodiments of the present invention, there are multiple water storage cavities, which are connected in series sequentially.

[0036] The water storage chamber can be two, three, four, etc., but the present invention is not limited to this and can also have other numbers of water storage chambers. Multiple water storage chambers are connected in series and can store water multiple times in the exhaust path, which can further prevent water from entering the engine with the gas, protect the core components of the engine, extend the service life, optimize combustion efficiency, improve power and economy, reduce emission pollution, and reduce the risk of gas freezing in the exhaust section 20 in low temperature environment.

[0037] According to some embodiments of the present invention, the water storage structure 40 is provided with a drain outlet, which is connected to the water storage cavity and can be opened or closed.

[0038] The water storage structure 40 can also have a drain outlet connected to the water storage chamber. The drain outlet can be opened or closed. Specifically, when the engine is stopped, if the water volume in the water storage chamber is too large, the drain outlet can be opened to drain the water. When the engine is running under high load, the heat generated by the engine is large, and the higher temperature can evaporate the water in the water storage chamber. At this time, the drain outlet can be closed. This design can prevent the water storage chamber from overflowing due to overfilling, further improving the safety and reliability of the engine assembly 100.

[0039] According to some embodiments of the present invention, such as Figure 2 As shown, the separator body 11 has an oil outlet 21, and the oil outlet 21 and the gas outlet 13 are located on the same side of the separator body 11.

[0040] The oil outlet 21 and the air outlet 13 are located on the same side of the separator body 11, and both are positioned on the bottom wall of the separator body 11. This facilitates coordinated control of oil-gas separation and emission. Furthermore, the oil outlet 21, located on the bottom wall of the separator body 11, allows the denser engine oil to naturally sink to the bottom wall of the oil-gas separator 10 under gravity, ensuring complete oil discharge and preventing residual oil from being re-carried by the gas. The air outlet 13, also located on the bottom wall of the separator body 11, prevents turbulent flow during gas discharge from entraining oil from the bottom, thus avoiding secondary entrainment.

[0041] Furthermore, when both the oil outlet 21 and the air outlet 13 are located on the bottom wall, they can share the same pipeline connection area, reducing pipeline bends and crossings, reducing space occupation, and the compact bottom wall design can avoid interference between pipelines and other engine components, improving installation flexibility.

[0042] According to some embodiments of the present invention, the exhaust portion 20 includes a plurality of exhaust pipes, each exhaust pipe having at least a portion disposed within the cylinder head.

[0043] The exhaust section 20 may include multiple exhaust pipes. In some embodiments of the present invention, the exhaust section 20 may include two, three, four, or other numbers of exhaust pipes, but the present invention is not limited thereto. The exhaust section 20 may also include other numbers of exhaust pipes, as long as the exhaust section 20 includes multiple exhaust pipes. As a specific embodiment of the present invention, the exhaust section 20 may include two exhaust pipes, both of which are connected to the engine. One exhaust pipe delivers the gas separated by the oil-gas separator 10 to the engine under high engine load conditions, while the other exhaust pipe delivers the gas separated by the oil-gas separator 10 to the engine under low engine load conditions.

[0044] At least a portion of each exhaust pipe is located within the cylinder head. In some embodiments of the present invention, each exhaust pipe may be entirely located within the cylinder head, or half of each exhaust pipe may be located within the cylinder head. However, the present invention is not limited to this, and each exhaust pipe may also have other proportions located within the cylinder head. As a specific embodiment of the present invention, each exhaust pipe is entirely located within the cylinder head. This arrangement allows the exhaust pipe to be heated by the engine's own heat, effectively reducing the risk of the gas inside the exhaust pipe freezing in a low-temperature environment. This is beneficial for improving the engine's cold start speed and also avoids the need for a separate heater to heat the exhaust section 20, thus reducing the vehicle's manufacturing and operating costs.

[0045] Furthermore, such as Figure 1 As shown, the oil-gas separator 10 also has an air inlet 14, which can be used to receive blow-by gas from the engine combustion chamber and fresh air from outside. The oil-gas separator 10 separates oil vapor and unburned gas and guides them to the secondary combustion path, avoiding direct emission into the atmosphere, which can reduce harmful gas emissions and meet environmental protection standards.

[0046] The bypass system according to an embodiment of the present invention includes the engine assembly 100 for a vehicle described above. It can heat the exhaust section 20 by the heat of the engine itself, effectively reducing the risk of gas freezing in the exhaust pipe in a low-temperature environment. This is beneficial to improving the cold start speed of the engine, enhancing the safety and reliability of the bypass system, and also avoiding the need to separately heat the exhaust section 20 with a heater, effectively reducing the manufacturing and operating costs of the vehicle.

[0047] The vehicle according to the present invention includes the bypass system of the above embodiment, which can heat the exhaust section 20 by the heat of the engine itself, effectively reducing the risk of gas freezing in the exhaust pipe in a low-temperature environment, which is beneficial to improving the cold start speed of the engine, improving the safety and reliability of the bypass system, and also avoiding the need to set up a separate heater to heat the exhaust section 20, effectively reducing the manufacturing cost and operating cost of the vehicle.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An engine assembly for a vehicle, characterized in that, include: An engine having a cylinder head; An oil-gas separator having an outlet configured to communicate with the intake manifold of the engine to deliver gas separated by the oil-gas separator to the engine, at least a portion of the outlet being located within the cylinder head.

2. The engine assembly for a vehicle according to claim 1, characterized in that, The engine assembly further includes: an oil return line, which connects the crankcase of the engine and the oil outlet of the oil-gas separator, and the oil return line is equipped with an oil return valve, the distance between the oil return valve and the oil-gas separator being greater than the distance between the oil return valve and the engine.

3. The engine assembly for a vehicle according to claim 2, characterized in that, The oil-gas separator also has a separator body and a one-way valve. The separator body has an outlet, which is connected to the outlet section. The one-way valve is located at the outlet.

4. The engine assembly for a vehicle according to claim 3, characterized in that, The separator body includes a water storage structure that defines a water storage cavity. The water storage structure is located between the air outlet and the air outlet section, so that the water storage cavity connects the air outlet and the air outlet section.

5. The engine assembly for a vehicle according to claim 4, characterized in that, There are multiple water storage chambers, and the multiple water storage chambers are connected in series.

6. The engine assembly for a vehicle according to claim 4, characterized in that, The water storage structure has a drain outlet, which is connected to the water storage cavity and can be opened or closed.

7. The engine assembly for a vehicle according to claim 3, characterized in that, The separator body has the oil outlet, and the oil outlet and the gas outlet are located on the same side of the separator body.

8. The engine assembly for a vehicle according to any one of claims 1-7, characterized in that, The exhaust section includes a plurality of exhaust pipes, at least a portion of each exhaust pipe being disposed within the cylinder head.

9. A tortuous system, characterized in that, Includes an engine assembly for a vehicle according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the torsion system according to claim 9.

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