CN202483679U

CN202483679U - Oil return pipe assembly of diesel engine supercharger

Info

Publication number: CN202483679U
Application number: CN 201220115013
Authority: CN
Inventors: 钟贤; 李金印; 曹芫郡; 姜小林
Original assignee: Chongqing Sokon Industry Group Co Ltd
Current assignee: Chongqing Sokon Industry Group Co Ltd
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2012-10-10
Anticipated expiration: 2022-03-23

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

DENG pressurized machine return tube assembly

Technical field

The utility model relates to a kind of engine accessory parts, particularly a kind of return tube assembly that is used for the DENG pressurized machine.

Background technique

Exhaust-gas turbocharger is as the key components and parts of supercharged engine; Be installed in the air outlet of enmgine exhaust; The rotating speed of turbosupercharger is generally tens0000 to be changeed and even 270,000 rev/mins; If there is not good lubricated and cooling between the axle of high speed rotating and the bearing, axle and bearing will inevitably ablations, inordinate wear and cause whole pressurized machine to lose efficacy, so the entering of lubricant oil and the palpus that refluxes are unobstructed.

According to Traditional engine design arrangement form; The upper end of pressurized machine return tube is connected the return opening position on the pressurized machine; The lower end connects on the back oil road of cylinder block; Or on the return opening on the oil sump, the lower end of pressurized machine return tube is higher than the machine oil liquid level of engine sump tank simultaneously, and is smooth and easy with the oil return (leaning on gravity) that guarantees pressurized machine.

But to receiving layout spatial limitation and the motor that needs compact design; The drop of engine booster return tube upper and lower end is often less; Can't be with the situation of connection design more than the engine motor oil liquid level of lower end; In the pressurized machine return tube, can form one section cavity between the machine oil liquid level in pressurized machine lubricating oil return mouth and the oil sump, its inner air can't be got rid of, and vapour lock occurs; Cause the oil return of pressurized machine gravity not smooth, pressurized machine occurs and scurry oil and even damage and finally cause motor can't satisfy the requirement of Performance And Reliability.

Therefore, need improve, can guarantee that the oil return of pressurized machine gravity is smooth and easy existing pressurized machine lubricating oil return pipe; Avoid occurring the problem that pressurized machine is scurried oil and even damage; Guarantee that simultaneously the return tube assembly does not influence the motor integral arrangement, and assembling is simple, keeps in repair easy.

The model utility content

In view of this, the utility model provides a kind of DENG pressurized machine return tube assembly, can guarantee that the oil return of pressurized machine gravity is smooth and easy; Avoid occurring the problem that pressurized machine is scurried oil and even damage; Guarantee that simultaneously the return tube assembly does not influence the motor integral arrangement, and assembling is simple, keeps in repair easy.

The DENG pressurized machine return tube assembly of the utility model comprises the oil return body and is communicated with and upwardly extending outlet pipe with the oil return body.

Further, said oil return body is divided into two sections split-type structurals that are communicated with by bellows;

Further, said outlet pipe is communicated in the oil return body through the mode of welding;

Further, the weld of said outlet pipe and oil return body is welded with reinforced layer;

Further, 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.

The beneficial effect of the utility model: the DENG pressurized machine return tube assembly of the utility model, on the oil return body, outlet pipe is set, utilize this physical property of air density that the air in the oil return body is discharged automatically; Avoid taking place vapour lock, can guarantee that the oil return of pressurized machine gravity is smooth and easy, avoid occurring the problem that pressurized machine is scurried oil and even damage; Can effectively solve the problem that the pressurized machine oil return receives the little factor restriction of drop, make motor more reliable, guarantee that simultaneously the return tube assembly does not influence the motor integral arrangement; The path of return tube is not restricted yet; And can be other component and abdicate the space, assembling is simple, keeps in repair easy.

Description of drawings

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

Fig. 1 is the structure and the scheme of installation of the utility model.

Embodiment

Fig. 1 is the structure and the scheme of installation of the utility model; As shown in the figure: the DENG pressurized machine return tube assembly of present embodiment; Comprise oil return body 1 and be communicated with and upwardly extending outlet pipe 2 with the oil return body; Mode of communicating can be multiple structure, comprises detachable or fixed connection, all can realize the purpose of the utility model; As shown in the figure, oil return body 1 is provided with the inlet flange 11 and the outlet(discharge) flange that is used to be connected the return opening on the oil sump 12 that is used to connect pressurized machine 6.

In the present embodiment; Said oil return body 1 divides for two sections split-type structurals that are communicated with by bellows 3; Bellows 3 structures can adapt to the assembly that increases behind the outlet pipe 2 preferably installs, as shown in the figure, can be connected removably between bellows 3 structures and the two-part oil return body 1; Can adjust the installation position of two end flange as required, make the utility model dismounting very easy.

In the present embodiment, said outlet pipe 2 is communicated in oil return body 1 through the mode of welding; Firm also long service life is beneficial to the elimination leak source, reduces maintenance difficulty.

In the present embodiment, said outlet pipe 2 is welded with reinforced layer 4 with the weld of oil return body 1, further increases bulk strength, increases the service life.

In the present embodiment; Said outlet pipe 2 is provided with and is used to make outlet pipe 2 to be communicated in the outlet pipe flange 5 of engine cylinder-body back oil road 7; Said outlet pipe 2 extends outlet pipe flange 5 and its outlet is higher than lubricant oil liquid level in the engine cylinder-body back oil road 7; The length that outlet pipe 2 extends outlet pipe flange 5 is generally 15-20mm, can satisfy above-mentioned requirements; Further guarantee that the return tube assembly does not influence the motor integral arrangement, the path of return tube is not restricted yet, and can be other component and abdicate the space, and assembling is simple, keeps in repair easy.

As shown in the figure; The machine oil that refluxes from pressurized machine 6 is back to oil sump upper body 8 through oil return body 1; Communicating with air through the outlet pipe air outlet that is higher than back oil road 7 inner engine oil liquid levels guarantees that the machine oil in the pressurized machine 6 oil return bodys 1 can be back in the oil sump upper body 8 smoothly, thereby guarantees pressurized machine 6 proper functioning.

Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

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.