OIL SEMP ASSEMBLY, ENGINE AND VEHICLE

Abstract

The invention relates to an oil sump assembly (1), an engine (2), and a vehicle (4). The oil sump assembly (1) comprises an oil sump body (100) and an exhaust silencer (300). The oil sump body (100) comprises a first chamber (110) and a second chamber (120), the first chamber (110) being configured to hold engine oil. The exhaust silencer (300) is arranged in the second chamber (120). A first gas inlet (121) and a first gas outlet (122) are formed in the second chamber (120). The exhaust silencer (300) is provided with a second gas inlet (310) and a second gas outlet (320). The second gas inlet (310) is connected to the first gas inlet (121), and the second gas outlet (320) is connected to the first gas outlet (122).

Description

REFERENCE TO RELATED REGISTRATIONS

[0001] The present disclosure claims priority from Chinese patent application No. 202311137788.6, filed on August 31, 2023, entitled “OIL SWAMP ASSEMBLY, ENGINE AND VEHICLE”, which is hereby incorporated in its entirety by reference. AREA

[0002] The present disclosure relates to the field of noise reduction of vehicle exhaust gases, in particular an oil sump assembly, an engine and a vehicle. BACKGROUND

[0003] In existing vehicles, the engine is typically located at the front, while the muffler is situated at the rear. The exhaust pipe connecting the engine and muffler must extend from the front to the rear of the vehicle. This long pipe causes problems such as high exhaust backpressure and reduced thermal efficiency. Furthermore, this configuration involves many components and is poorly integrated. Additionally, in hybrid vehicles, the exhaust pipe connecting the engine and muffler occupies space that could otherwise be used for the battery pack, resulting in a limited battery pack size that directly impacts the vehicle's range. SUMMARY

[0004] The purpose of the present disclosure is to specify an oil sump assembly, an engine and a vehicle in order to at least partially solve the problems existing in the current technology.

[0005] To achieve the above-mentioned purpose, the present disclosure provides an oil sump assembly comprising: an oil sump body with a first chamber and a second chamber, wherein the first chamber is configured to contain engine oil, and an exhaust silencer arranged in the second chamber, wherein the second chamber is provided with a first gas inlet and a first gas outlet, and the exhaust silencer has a second gas inlet and a second gas outlet, wherein the second gas inlet is connected to the first gas inlet and the second gas outlet is connected to the first gas outlet.

[0006] In one embodiment, the first gas inlet and the second gas inlet are aligned relative to each other, and the first gas outlet and the second gas outlet are aligned relative to each other.

[0007] In one embodiment, a heat insulation part is arranged between the exhaust silencer and the inner wall of the second chamber.

[0008] In one embodiment, the thermal insulation component is a heat-insulating cotton pad that is press-fitted between the exhaust silencer and the inner wall of the second chamber. The heat-insulating cotton pad is provided with a gas inlet channel and a gas outlet channel, wherein the gas inlet channel connects the first gas inlet to the second gas inlet and the gas outlet channel connects the first gas outlet to the second gas outlet.

[0009] In one embodiment, the heat-insulating cotton pad comprises a first part and a second part. The first part has an upward-facing opening. The second part is configured to cover the opening of the first part, and the first part and the second part together form a receiving space.

[0010] In one embodiment, the second chamber is designed as a shell shape with an upwardly directed opening, and the oil sump assembly further comprises an oil baffle plate that covers the opening of the second chamber.

[0011] In one embodiment, a sealing element is arranged between the oil baffle plate and the second chamber.

[0012] In one embodiment, the upper end surface of the oil splash plate is provided with a flow guide groove to direct the engine oil flowing onto the upper end surface of the oil splash plate into the first chamber.

[0013] In one embodiment, the upper end surface of the oil splash plate is designed with a deflection section that is configured so as not to impede the movement of the engine's crankshaft.

[0014] In one embodiment, the first gas outlet is provided with a first connecting element configured to connect to an exhaust tailpipe. The first gas inlet is provided with a second connecting element configured to connect to an exhaust catalyst.

[0015] According to a second aspect of the present disclosure, an engine is provided comprising an engine block and the above-mentioned oil sump assembly, the oil sump assembly being attached to the underside of the engine block.

[0016] According to a third aspect of the present disclosure, a vehicle is provided comprising a vehicle body and the aforementioned engine, wherein the engine is arranged in the front or rear compartment of the vehicle body.

[0017] In one embodiment, the vehicle is a hybrid vehicle.

[0018] The aforementioned technical solution integrates the exhaust silencer into the second chamber. The gases expelled from the engine can enter the exhaust silencer directly via the first and second gas inlets, and exit directly into the exhaust tailpipe via the second and first gas outlets. This design offers at least the following advantages: 1. The components in the engine compartment feature a high degree of integration and efficient use of space. Compared to the conventional layout (where the engine and exhaust muffler are located at the front and rear, respectively), the space at the rear of the vehicle, far from the engine, can be effectively freed up. For example, if the engine is located at the front of the vehicle, the trunk space can be significantly increased. 2. Compared to the conventional arrangement, the exhaust tailpipe connected to the muffler can expel exhaust gases directly at a point near the muffler, without extending to the other end of the vehicle. This has the advantage of effectively shortening the exhaust duct and reducing exhaust backpressure, thereby improving the engine's thermal efficiency. Furthermore, the number of exhaust system components can be reduced (by eliminating the extended front and rear exhaust tailpipe), resulting in lower costs and failure rates, and visually "hiding" the exhaust system, thus making the vehicle more suitable for the development of electrification. 3. When the oil sump assembly is used in a hybrid vehicle, the exhaust tailpipe connected to the muffler expels the exhaust gases directly at a point near the muffler, eliminating the need for the front and rear exhaust tailpipes. This prevents the exhaust tailpipe from occupying the space of the battery pack, effectively improving the battery pack's range.

[0019] Further features and advantages of the present disclosure are described in detail in the following section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings serve to enhance understanding of this revelation and are part of the description. Together with the following detailed description, they serve to explain this revelation, but are not intended to limit it. The accompanying drawings depict: Fig. 1: an exploded view of an oil sump assembly, illustrated by way of example according to the present disclosure, Fig. 2: a front cross-sectional view of the in Fig. 1 oil sump assembly shown, Fig. 3: a schematic substructure diagram of the in Fig. 1 oil sump assembly shown, Fig. 4: a schematic diagram of the in Fig. 1 oil sump assembly shown, which is connected to an exhaust tailpipe and an exhaust catalyst, Fig. 5: a schematic diagram of a battery pack attached to a sill, shown by way of example in accordance with the present disclosure, Fig. 6: a schematic diagram of a partial structure of a vehicle, shown by way of example according to the present disclosure, Fig. 7: a schematic representation of an engine shown by way of example according to the present disclosure, as well as Fig. 8: a schematic representation of a vehicle shown by way of example according to the present disclosure. Reference symbol list 1 Oil sump assembly 2 Engine 3 Engine block 4 vehicles 5 Vehicle body 6 front room 7 rear room 100 oil sump bodies 110 first chamber 120 second chamber 121 first gas inlet 122 first gas outlet 123 Interior wall 210 first connecting element 220 second connecting element 300 exhaust silencers 310 second gas inlet 320 second gas outlet 400 thermal insulation part 401 heat-insulating cotton padding 410 first part 411 Gas intake port 412 Gas outlet channel 420 second part 430 Recording room 500 oil impact plate 501 upper end surface 510 Flow guide groove 520 Passing section 600 sealing part 710 Exhaust tailpipe 720 exhaust catalyst 800 Oil drain plug 910 battery pack 920 sills DETAILED DESCRIPTION

[0021] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described here serve only to illustrate and explain the present disclosure and are not to be used to limit the present disclosure.

[0022] In the present disclosure, the directional terms used, such as "inside, outside," "top, bottom," "front, back," unless otherwise specified, may be defined based on the actual direction of use of the components in question or on their own structures. For example, "A heat-insulating element is arranged between the exhaust silencer and the 'inner wall' of the second chamber" means that the exhaust silencer is arranged in the receiving space of the second chamber and a heat-insulating element is arranged between the exhaust silencer and the inner wall surface of the second chamber. "The 'upper end face' of the oil baffle plate is provided with a flow-guiding groove" means that, after the oil sump assembly is installed in the engine block, the end face of the oil baffle plate located closest to the engine block is provided with a flow-guiding groove."Top and bottom" here refer to the upper and lower directions after the oil sump assembly has been installed in the engine block and the engine has been fitted into the body. The "front space" or "rear space" of the vehicle is based on the longitudinal direction of the vehicle, with the direction of the vehicle's front being referred to as the front and the direction of the vehicle's rear as the rear; that is, the front space refers to the space near the front of the vehicle and the rear space refers to the space near the rear of the vehicle.

[0023] Furthermore, in this disclosure, the terms "first," "second," etc., are used to distinguish one element from another and have no order or importance. Where the following description refers to the accompanying drawings, unless otherwise indicated, identical reference numerals in different drawings denote the same or similar elements.

[0024] A vehicle's exhaust silencer is a device that reduces engine exhaust noise by gradually decreasing exhaust pressure and dampening exhaust pressure pulsation.

[0025] With reference to the Fig. 1, Fig. 2 to Fig. According to a first aspect of the present disclosure, an oil sump assembly 1 is provided, comprising an oil sump body 100 and an exhaust silencer 300. The oil sump body 100 comprises a first chamber 110 and a second chamber 120, the first chamber 110 being configured to contain engine oil, and the exhaust silencer 300 being arranged in the second chamber 120. The second chamber 120 is provided with a first gas inlet 121 and a first gas outlet 122. The exhaust silencer 300 has a second gas inlet 310 and a second gas outlet 320, the second gas inlet 310 being connected to the first gas inlet 121 and the second gas outlet 320 being connected to the first gas outlet 122.

[0026] In the embodiment of the present disclosure, the first chamber 110 and the second chamber 120 can be integrally formed with the oil sump body 100 by injection molding to prevent the engine oil in the first chamber 110 from flowing into the second chamber 120, and the two chambers can be divided into two separate chambers by a partition plate. Furthermore, in some other embodiments, the first chamber 110 and the second chamber 120 can be two independent chambers that can be joined together by welding, mechanical connection, or other methods to form the oil sump body 100.

[0027] The present disclosure does not limit the method for gas connection between the first gas inlet 121 and the second gas inlet 310. For example, the connection can be established via a gas inlet channel 411 described below. Furthermore, in some other embodiments, a gas line can also be connected between the first gas inlet 121 and the second gas inlet 310 to achieve gas connection between the two. Similarly, the first gas outlet 122 and the second gas outlet 320 can also be connected to each other via a gas outlet channel 412 described below or via a gas line.

[0028] By using the aforementioned technical solution, the exhaust silencer 300 is integrated into the second chamber 120. The gases expelled from the engine can enter the exhaust silencer 300 directly through the first gas inlet 121 and the second gas inlet 310 and then directly into the exhaust tailpipe 710, as shown in Fig. 4 shown, to be expelled through the second gas outlet 320 and the first gas outlet 122. This design has at least the following advantages: 1. The components in the engine compartment feature a high degree of integration and efficient use of space. Compared to the conventional layout (where the engine and exhaust silencer are located at the front and rear of the vehicle, respectively), the space at the rear of the vehicle, far from the engine, can be effectively freed up. For example, if the engine is located at the front of the vehicle, the storage space in the trunk at the rear can be significantly increased. 2. Compared to the conventional arrangement, the exhaust tailpipe 710, connected to the exhaust silencer 300, can expel exhaust gases directly near the engine compartment, without extending to the rear of the vehicle far from the engine. On the one hand, this effectively shortens the exhaust duct and reduces exhaust backpressure, thereby improving the engine's thermal efficiency. On the other hand, it reduces the number of exhaust system components (eliminating the front and rear exhaust ducts), resulting in lower costs and failure rates. If the engine is mounted at the front of the vehicle, the exhaust can be visually concealed, making the vehicle more suitable for future electrification. 3. When the oil sump assembly 1 is used in a hybrid vehicle, the exhaust tailpipe 710 connected to the exhaust silencer 300 directs the exhaust gases near the engine compartment, and the exhaust duct running to the front and rear can be omitted. Since the battery pack is arranged longitudinally in the center of the vehicle, the exhaust duct can be avoided taking up space that would otherwise be occupied by the battery pack, thus improving the battery pack's range.

[0029] In the embodiment of the present disclosure, the first gas inlet 121 and the second gas inlet 310 can be aligned relative to each other, and the first gas outlet 122 and the second gas outlet 320 can be aligned relative to each other. "Alignment" here does not mean that the centers of the two are perfectly aligned, but only that the first gas inlet 121 and the second gas inlet 310, as well as the first gas outlet 122 and the second gas outlet 320, must generally be aligned relative to each other. This allows gas to enter and exit the second chamber 120 and the exhaust silencer 300 directly without being deflected.Such a design can reduce the distance between the first gas inlet 121 and the second gas inlet 310, as well as between the first gas outlet 122 and the second gas outlet 320, so that exhaust gas can quickly enter the exhaust silencer 300 through the first gas inlet 121 and the second gas inlet 310 and, after being treated by the exhaust silencer 300, be quickly expelled through the first gas outlet 122 and the second gas outlet 320. Furthermore, the aligned arrangement avoids additional rotations and changes in direction of the exhaust gas within the second chamber 120, which generate noise. In addition, in some embodiments, as described below, a thermal insulation element 400 must be arranged between the second chamber 120 and the exhaust silencer 300, which complicates the arrangement of exhaust ducts, etc.The aligned arrangement can simplify the process and reduce production difficulties and costs.

[0030] Since the temperature of the exhaust gases emitted by the engine is relatively high, in the embodiment of the present disclosure a heat insulation element 400 can be arranged between the exhaust silencer 300 and the inner wall 123 of the second chamber 120 to prevent the high temperature of the exhaust gases from heating the engine oil in the first chamber 110 and the surrounding components by conduction or radiation. Such a design can prevent the high temperature of the exhaust gases in the exhaust silencer 300 from being conducted to the outside, thus preventing damage to the surrounding components and the engine oil.

[0031] Furthermore, in the embodiment of the present disclosure, the thermal insulation part 400 can be a heat-insulating wadding pad 401, which is press-fitted between the exhaust silencer 300 and the inner wall 123 of the second chamber 120. In addition to its thermal insulation function, the heat-insulating wadding pad 401 can also play a role in shock absorption and noise reduction. It should be noted that the present disclosure does not limit the specific shape of the thermal insulation part 400. In addition to the aforementioned heat-insulating wadding pad 401, in some other embodiments the thermal insulation part 400 can also be applied to the outer wall of the exhaust silencer 300 with aerogel. It should be noted that the aforementioned press fit serves to reduce the vibration of the exhaust silencer 300 within the second chamber 120.

[0032] In the embodiment of the present disclosure, the heat-insulating wadding pad 401 can be provided with a gas inlet channel 411 and a gas outlet channel 412. The gas inlet channel 411 connects the first gas inlet 121 to the second gas inlet 310, and the gas outlet channel 412 connects the first gas outlet 122 to the second gas outlet 320. The gas inlet channel 411 can establish a gas connection between the first gas inlet 121 and the second gas inlet 310, so that exhaust gases can enter the exhaust silencer 300 successively through the first gas inlet 121, the gas inlet channel 411, and the second gas inlet 310. The gas outlet channel 412 can establish a gas connection between the first gas outlet 122 and the second gas outlet 320, so that the exhaust gases inside the exhaust silencer 300 flow successively through the second gas outlet 320, the gas outlet channel 412 and the first gas outlet 122 and enter the exhaust tailpipe 710.In the embodiment of the present disclosure, the first gas inlet 121, the second gas inlet 310, and the gas inlet channel 411 can be of the same size and directly opposite each other to reduce noise and vibration generated by the gas flow. The first gas outlet 122, the second gas outlet 320, and the gas outlet channel 412 can also be of the same size and directly opposite each other. Furthermore, such a design allows the connection between the first gas inlet 121 and the second gas inlet 310 to be achieved without additional piping if the wall surface of the second chamber 120 and the exhaust silencer 300 are spaced apart (i.e., if there is a gap between the first gas inlet 121 and the second gas inlet 310), thereby saving costs and simplifying assembly.

[0033] To facilitate the wrapping of the heat-insulating cotton padding around the outer circumference of the exhaust silencer 300, the heat-insulating cotton padding in the embodiment of the present disclosure can be, with reference to Fig. 1. The assembly comprises a first part 410 and a second part 420. The first part 410 is configured to have an opening on one side (e.g., an upward-facing opening), the second part 420 is configured to cover the opening of the first part 410, and the first part 410 and the second part 420 form a receiving chamber 430. During installation, the shell-shaped first part 410 is first positioned in the second chamber 120, then the exhaust silencer 300 is installed in the first part 410, and finally the second part 420 covers the opening of the first part 410 and is pressed against the exhaust silencer 300.

[0034] With reference to Fig. 1 to Fig. 2 In the embodiment of the present disclosure, the second chamber 120 can be configured as a shell shape with an opening on one side (e.g., an upward-facing opening), and the oil sump assembly 1 can further comprise an oil baffle plate 500 that covers the opening of the second chamber 120. Such a design allows the oil baffle plate 500 to form a sealed space with the second chamber 120. On the one hand, it can prevent contaminants such as engine oil from entering the second chamber 120 and protect the exhaust silencer 300. On the other hand, it is advantageous to compress the second part 420 of the aforementioned heat-insulating wadding pad on the top of the exhaust silencer 300, thereby improving the enveloping properties of the heat-insulating wadding pad and reducing the heat emitted to the outside by the exhaust silencer 300.Furthermore, the design of this removable cover facilitates the disassembly and assembly of the 300 exhaust silencer. The 500 oil baffle plate can be opened when installation or disassembly is required.

[0035] To ensure a seal between the oil baffle plate 500 and the second chamber 120, a sealing element 600 can be arranged between the oil baffle plate 500 and the second chamber 120 according to the embodiment of the present disclosure (see Fig. 2) The present disclosure does not limit the specific form of the sealing element 600. It may be a sealing agent applied between the two components or a seal arranged between the two components.

[0036] In order to direct the engine oil flowing back from the engine into the second chamber 120, in the embodiment of the present disclosure, with reference to Fig. 4. The upper end surface 501 of the oil splash plate 500 is provided with a flow guide groove 510 to direct the engine oil flowing onto the upper end surface 501 of the oil splash plate 500 into the first chamber 110. In particular, the following can be provided in the Fig. In the embodiment shown in Figure 4, the upper end surface of the oil splash plate 500 is arcuate and concave, and the flow guide groove 510 is open at the lowest point of the concave structure of the upper end surface 501. The arcuate concave structure can cause the engine oil flowing onto the upper end surface 501 of the oil splash plate 500 to flow into the flow guide groove 510 under the influence of gravity and then through the flow guide groove 510 into the first chamber 110. It should be noted that the present disclosure does not limit the structure of the flow guide groove 510. It can be linear, as shown in Figure 4. Fig. 4 shown, or curved in some other embodiments.

[0037] Since the oil sump assembly 1 must be mounted on the underside of the engine block, and the engine block has a rotating crankshaft whose position is adjacent to the oil baffle plate 500, the oil baffle plate 500 can interfere with the rotation of the crankshaft. With reference to Fig. 4 In the embodiment of the present disclosure, the upper end surface 501 of the oil splash plate 500 can be configured with a deflection section 520 such that the movement of the engine's crankshaft is not impeded. In the embodiment of the present disclosure, the deflection section 520 can be the aforementioned arc-shaped concave structure. In some other embodiments, the deflection section 520 can also be a different deflection structure that is adaptively formed on the upper surface of the oil splash plate 500 according to the crankshaft envelope.

[0038] In order for the exhaust silencer 300, arranged in the second chamber 120, to be in gas contact at both ends with the exhaust catalyst 720 and the exhaust tailpipe 710, according to Fig. 4 and Fig. 6 In the embodiment of the present disclosure, the first gas outlet 122 is provided with a first connecting element 210 for connecting to the exhaust tailpipe 710, and the first gas inlet 121 can be provided with a second connecting element 220 for connecting to the exhaust catalyst 720. The present disclosure does not restrict the specific structures of the first connecting element 210 and the second connecting element 220. They can be flange structures or ring structures. Accordingly, the exhaust tailpipe 710 and the exhaust catalyst 720 must also be provided with connecting elements that are used in conjunction with the ring structure or flange structure, which is not described in detail here.

[0039] With reference to Fig. In the embodiment of the present disclosure, the oil sump assembly 1 further comprises an oil drain plug 800, which is arranged at the lower end of the first chamber 110. The oil drain plug 800 serves to drain the engine oil received in the first chamber 110 by unscrewing and removing the oil drain plug 800 when the engine needs to be serviced.

[0040] Referring to Fig. According to a second aspect of the present disclosure, an engine 2 is provided, comprising an engine block 3 and the aforementioned oil sump assembly 1. The oil sump assembly 1 is attached to the underside of the engine block 3. Since the engine 2 exhibits all the advantageous effects of the aforementioned oil sump assembly 1, these will not be repeated here.

[0041] Referring to Fig. According to a third aspect of the present disclosure, a vehicle 4 is provided, comprising a vehicle body 5 and the aforementioned engine 2. The engine 2 is arranged in the front compartment 6 or the rear compartment 7 of the vehicle body 5. Since the vehicle 4 exhibits all the advantageous effects of the aforementioned engine 2, these will not be repeated here.

[0042] The present disclosure is not limited to a specific vehicle type. In some embodiments, the vehicle 4 may, for example, be a hybrid vehicle. The hybrid vehicle may further comprise a battery 910 and two sills 920 arranged symmetrically on the vehicle body, as shown in the Fig. 5 and Fig.Figure 6 shows the battery 910 being mounted directly between the two sills 920. In this case, the upper cover plate of the battery 910 can be used as the vehicle floor, thus saving space in terms of vehicle height. Alternatively, the upper battery cover can be omitted and the vehicle floor used as the upper cover.

[0043] By integrating the exhaust silencer 300 into the space of the oil sump body 100 and attaching it to the engine block, the exhaust tailpipe 710 connected to the exhaust silencer 300 can be positioned entirely close to the engine compartment without extending to the other end of the vehicle. Compared to the conventional exhaust system arrangement (where the exhaust tailpipe must extend from one end of the vehicle to the other), this can increase the space available for the battery pack of hybrid vehicles and further improve their all-electric range. Simultaneously, with this solution, the battery pack 910 is attached directly to the rocker panel 920, and the rigidity of the battery pack 910 can improve the torsional rigidity of the entire vehicle.Furthermore, the present disclosure enables projects developed on the same platform for hybrid vehicles and purely electric vehicles to use the same type of battery pack 910 and battery pack mounting structure (sill 920).

[0044] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the embodiments mentioned above. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0045] Furthermore, it should be noted that the various specific technical features described in the aforementioned specific embodiments can be combined in any suitable way without contradiction. To avoid unnecessary repetition, not all possible methods of combination are described separately in this disclosure.

[0046] Furthermore, different embodiments of the present disclosure can be combined in any way as long as they do not contradict the idea of ​​the present disclosure, and they are also to be regarded as part of the content of the present disclosure. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202311137788.6

[0001]

Claims

Oil sump assembly (1) comprising: an oil sump body (100) with a first chamber (110) and a second chamber (120), wherein the first chamber (110) is configured to contain engine oil, and an exhaust silencer (300) arranged in the second chamber (120), wherein the second chamber (120) is provided with a first gas inlet (121) and a first gas outlet (122), and the exhaust silencer (300) has a second gas inlet (310) and a second gas outlet (320), wherein the second gas inlet (310) is connected to the first gas inlet (121) and the second gas outlet (320) is connected to the first gas outlet (122). Oil sump assembly (1) according to claim 1, characterized in that the first gas inlet (121) and the second gas inlet (310) are aligned with each other and the first gas outlet (122) and the second gas outlet (320) are aligned with each other. Oil sump assembly (1) according to claim 1 or 2, characterized in that a heat insulation part (400) is arranged between the exhaust silencer (300) and the inner wall (123) of the second chamber (120). Oil sump assembly (1) according to claim 3, characterized in that the heat insulation part (400) is a heat-insulating cotton pad (401), wherein the heat-insulating cotton pad (401) is inserted between the exhaust silencer (300) and the inner wall (123) of the second chamber (120) by means of a press fit, and the heat-insulating cotton pad (401) is provided with a gas inlet channel (411) and a gas outlet channel (412), wherein the gas inlet channel (411) connects the first gas inlet (121) with the second gas inlet (310), and the gas outlet channel (412) connects the first gas outlet (122) with the second gas outlet (320). Oil sump assembly (1) according to claim 3 or 4, characterized in that the heat-insulating wadding pad (401) has a first part (410) and a second part (420), wherein the first part (410) has an upwardly directed opening, and the second part (420) is configured to cover the opening of the first part (410), and the first part (410) and the second part (420) form a receiving space (430). Oil sump assembly (1) according to one of claims 1 to 5, characterized in that the second chamber (120) is designed as a shell shape with an upwardly open opening and the oil sump assembly (1) further comprises an oil baffle plate (500), wherein the oil baffle plate (500) covers the opening of the second chamber (120). Oil sump assembly (1) according to claim 6, characterized in that a sealing part (600) is arranged between the oil baffle plate (500) and the second chamber (120). Oil sump assembly (1) according to claim 6 or 7, characterized in that an upper end surface (501) of the oil baffle plate (500) is provided with a flow guide groove (510) to direct the engine oil flowing onto the upper end surface (501) of the oil baffle plate (500) into the first chamber (110). Oil sump assembly (1) according to one of claims 6 to 8, characterized in that an upper end surface (501) of the oil baffle plate (500) is formed with a deflection section (520) and the deflection section (520) is configured such that the movement of the crankshaft of the engine is not hindered. Oil sump assembly (1) according to one of claims 1 to 9, characterized in that the first gas outlet (122) is provided with a first connecting element (210) for connecting to an exhaust tailpipe (710) and the first gas inlet (121) is provided with a second connecting element (220) for connecting to an exhaust catalyst (720). Motor (2) comprising an engine block (3) and the oil sump assembly (1) according to one of claims 1 to 10, characterized in that the oil sump assembly (1) is attached to the underside of the engine block (3). Vehicle (4) comprising a vehicle body (5) and the engine (2) according to claim 11, characterized in that the engine (2) is arranged in a front space (6) or a rear space (7) of the vehicle body (5). Vehicle (4) according to claim 12, characterized in that the vehicle (4) is a hybrid vehicle.

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