CN202483679U - Oil return pipe assembly of diesel engine supercharger - Google Patents

Abstract

The utility model discloses an oil return pipe assembly of a diesel engine supercharger. The oil return pipe assembly of the diesel engine supercharger comprises an oil return pipe body and an exhaust pipe communicated with the oil return pipe body and extending upwards. The exhaust pipe is disposed on the oil return pipe body, air in the oil return pipe body is exhausted automatically by utilizing the physical property of air density, air resistance is avoided, the fact that gravity oil return of the supercharger is smooth is ensured, oil pumping of the supercharger or even damage is avoided, the problem that oil return of the supercharger is restricted by low fall is effectively resolved, and an engine becomes reliable. Meanwhile, the fact that the oil return pipe assembly does not affect overall arrangement of the engine is ensured, the path of the oil return pipe is also not restricted, and the oil return pipe assembly is capable of making space for other parts and components, simple to assemble and convenient to maintain.

Description

Diesel engine supercharger oil return pipe assembly

technical field

The utility model relates to an accessory part of an engine, in particular to an oil return pipe assembly for a supercharger of a diesel engine. the

Background technique

As a key component of a supercharged engine, the exhaust gas turbocharger is installed at the outlet of the exhaust manifold of the engine. If there is no good lubrication and cooling between the shaft and the bearing, the shaft and the bearing will inevitably be ablated and abnormally worn, which will lead to the failure of the entire supercharger, so the entry and return of lubricating oil must be smooth. the

According to the traditional engine design layout, the upper end of the supercharger oil return pipe is connected to the oil return port on the supercharger, and the lower end is connected to the oil return passage of the cylinder block, or the oil return port on the oil pan. The lower end of the oil return pipe is higher than the oil level of the engine oil pan to ensure smooth oil return (by gravity) of the supercharger. the

However, for an engine that is limited by the layout structure space and needs to be compactly designed, the drop between the upper and lower ends of the engine booster oil return pipe is often small, and it is impossible to design the connection at the lower end above the engine oil level. A cavity will be formed in the oil return pipe of the supercharger between the port and the oil level in the oil pan, and the air inside cannot be removed, resulting in air resistance, resulting in poor oil return by gravity of the supercharger and leakage of the supercharger. Oil and even damage will eventually cause the engine to fail to meet performance and reliability requirements. the

Therefore, it is necessary to improve the existing lubricating oil return pipe of the supercharger, which can ensure the smooth oil return of the supercharger under gravity, avoid the problem of oil leakage and even damage of the supercharger, and at the same time ensure that the oil return pipe assembly does not affect the overall layout of the engine , and simple assembly, easy maintenance. the

Utility model content

In view of this, the utility model provides a diesel engine supercharger oil return pipe assembly, which can ensure the smooth oil return of the supercharger by gravity, avoid the problem of oil leakage or even damage to the supercharger, and ensure that the oil return pipe assembly does not affect The overall layout of the engine is simple to assemble and easy to maintain. the

The oil return pipe assembly of a diesel engine supercharger of the utility model includes an oil return pipe body and an exhaust pipe communicating with the oil return pipe body and extending upward. the

Further, the oil return pipe body is divided into two split structures connected by bellows;

Further, the exhaust pipe is connected to the oil return pipe body by welding;

Further, the weld between the exhaust pipe and the oil return pipe body is welded with a reinforcing layer;

Further, the exhaust pipe is provided with an exhaust pipe flange for connecting the exhaust pipe to the oil return passage of the engine cylinder, and the exhaust pipe extends out of the exhaust pipe flange and its outlet is higher than the return passage of the engine cylinder. Lubricating oil level in the oil passage. the

Beneficial effects of the utility model: the oil return pipe assembly of the diesel engine supercharger of the utility model is provided with an exhaust pipe on the oil return pipe body, and the air in the oil return pipe body is automatically discharged by using the physical characteristic of air density, so as to avoid the occurrence of gas It can ensure the smooth oil return of the supercharger by gravity, avoid the problem of oil leakage and even damage to the supercharger, and can effectively solve the problem that the oil return of the supercharger is restricted by the factors of small drop, making the engine more reliable and ensuring the oil return at the same time. The oil pipe assembly does not affect the overall layout of the engine, and the path of the oil return pipe is not restricted, and it can make room for other parts, which is easy to assemble and maintain. the

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further. the

Fig. 1 is the structure and installation schematic diagram of the utility model. the

Detailed ways

Fig. 1 is a structure and installation diagram of the utility model, as shown in the figure: the oil return pipe assembly of the diesel engine supercharger in this embodiment includes an oil return pipe body 1 and an exhaust pipe 2 that communicates with the oil return pipe body and extends upwards , the connection way can be a variety of structures, including detachable or fixed connection, all of which can achieve the purpose of the utility model; as shown in the figure, the oil return pipe body 1 is provided with an inlet flange 11 used to connect It is connected to the outlet flange 12 of the oil return port on the oil pan. the

In this embodiment, the oil return pipe body 1 is divided into two split structures connected by the bellows 3. The structure of the bellows 3 can better adapt to the installation of components after the exhaust pipe 2 is added. As shown in the figure, the bellows The structure of the pipe 3 and the two-stage oil return pipe body 1 can be connected in a detachable manner, and the installation orientation of the flanges at both ends can be adjusted as required, which makes the utility model extremely easy to disassemble. the

In this embodiment, the exhaust pipe 2 is connected to the oil return pipe body 1 by welding; it is firm and has a long service life, which is beneficial to eliminate leakage points and reduce maintenance difficulty. the

In this embodiment, the welding part of the exhaust pipe 2 and the oil return pipe body 1 is welded with a reinforcing layer 4, which further increases the overall strength and prolongs the service life. the

In this embodiment, the exhaust pipe 2 is provided with an exhaust pipe flange 5 for connecting the exhaust pipe 2 to the oil return passage 7 of the engine cylinder, and the exhaust pipe 2 extends out of the exhaust pipe flange 5 And its outlet is higher than the lubricating oil liquid level in the oil return channel 7 of the engine block, and the length of the exhaust pipe 2 extending out of the exhaust pipe flange 5 is generally 15-20mm, which can meet the above requirements; further ensure that the oil return pipe assembly It does not affect the overall layout of the engine, and the path of the oil return pipe is not restricted, and it can make room for other components, which is easy to assemble and maintain. the

As shown in the figure, the engine oil returned from the supercharger 6 flows back to the upper body 8 of the oil pan through the oil return pipe body 1, and the air outlet of the exhaust pipe that is higher than the oil level in the oil return passage 7 communicates with the air to ensure the increase. The engine oil in the oil return pipe body 1 of the compressor 6 can smoothly flow back into the upper body 8 of the oil pan, thereby ensuring the normal operation of the supercharger 6 . the

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model. the

Claims (5)

1. DENG pressurized machine return tube assembly is characterized in that: comprise the oil return body and be communicated with and upwardly extending outlet pipe with the oil return body.

2. DENG pressurized machine return tube assembly according to claim 1 is characterized in that: said oil return body is divided into two sections split-type structurals that are communicated with by bellows.

3. DENG pressurized machine return tube assembly according to claim 2 is characterized in that: said outlet pipe is communicated in the oil return body through the mode of welding.

4. DENG pressurized machine return tube assembly according to claim 3, it is characterized in that: the weld of said outlet pipe and oil return body is welded with reinforced layer.

5. DENG pressurized machine return tube assembly according to claim 3; It is characterized in that: said outlet pipe is provided with and is used to make outlet pipe to be communicated in the outlet pipe flange of engine cylinder-body back oil road, and said outlet pipe extends the outlet pipe flange and its outlet is higher than lubricant oil liquid level in the engine cylinder-body back oil road.

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