阅读说明：本技术 涡轮增压器的联接装置及包括其以联接涡轮增压器的发动机 (Coupling device of turbocharger and engine comprising same for coupling turbocharger ) 是由 李俊熙 姜杓炫 于 2019-08-01 设计创作，主要内容包括：本发明公开了涡轮增压器的联接装置及包括其以联接涡轮增压器的发动机。用于涡轮增压器的联接装置能够通过支撑涡轮增压器的结构与排油接头之间的改进的联接结构来避免漏油现象。所述涡轮增压器联接装置包括支撑架,其一端由涡轮增压器的一部分支撑,另一端形成有使排油接头穿过其延伸的油通孔。支撑架联接至发动机的外表面,使得接头通孔与形成在发动机处的进油口对齐。还公开了一种包括所述联接装置的发动机,所述联接装置用于将涡轮增压器联接到发动机。(The invention discloses a coupling device of a turbocharger and an engine comprising the same for coupling the turbocharger. The coupling device for a turbocharger can prevent an oil leakage phenomenon by an improved coupling structure between a structure supporting the turbocharger and an oil discharge joint. The turbocharger coupling device includes a support bracket having one end supported by a portion of the turbocharger and the other end formed with an oil through hole through which an oil drain joint extends. The support bracket is coupled to an outer surface of the engine such that the joint through-hole is aligned with an oil inlet formed at the engine. An engine including the coupling device for coupling a turbocharger to an engine is also disclosed.)

1. A turbocharger coupling device, comprising:

a support bracket having one end supported by a portion of the turbocharger and the other end formed with a joint through-hole through which an oil discharge joint extends, the support bracket being coupled to an outer surface of the engine such that the joint through-hole is aligned with an oil inlet formed at the engine.

2. The turbocharger coupling device according to claim 1, wherein the oil drain joint is fitted in the oil inlet while extending through the joint through-hole.

3. The turbocharger coupling device according to claim 2, wherein said joint through hole is formed so as not to interfere with said oil discharge joint fitted in said oil inlet.

4. The turbocharger coupling device of claim 2, wherein the joint through bore has an inner diameter greater than an outer diameter of the oil drain joint.

5. The turbocharger coupling device of claim 2, wherein the oil inlet has an inner surface machined with a reaming hole, the oil drain fitting tightly in the oil inlet.

6. The turbocharger coupling device according to claim 2, wherein an inner surface of said oil inlet is threaded, said oil drain fitting being threadably fitted in said oil inlet.

7. An engine equipped with a turbocharger coupled to the engine, the engine comprising:

a support bracket having one end supported by a portion of the turbocharger and the other end formed with a joint through-hole, the support bracket being coupled to an outer surface of the engine such that the joint through-hole is aligned with an oil inlet port formed at the engine; and

an oil discharge joint having one end receiving oil discharged from the turbocharger and the other end fitted in the oil inlet while extending through the joint through-hole.

Technical Field

The present invention relates to a coupling device for a turbocharger, which can prevent an oil leakage phenomenon by an improved coupling structure between a structure supporting the turbocharger and an oil drain joint, and an engine including the coupling device for coupling the turbocharger.

Background

A turbocharger is a device including an exhaust turbine that rotates using energy of exhaust gas and a compressor directly connected to an impeller of the exhaust turbine to compress air and supply the compressed air to an engine, so that the output of the engine can be improved.

In other words, when the impeller is rotated by the exhaust gas, the compressor is rotated by the rotational force of the impeller, and thus compresses air introduced thereinto through the air cleaner. Compressed air is supplied to each cylinder of the engine, thereby improving the output of the engine.

Further, the turbocharger includes a shaft connected to the impeller. The shaft is supported by bearings because the rotational speed of the impeller is high. In order to lubricate the shaft and the bearing, oil from an oil pump is supplied between the shaft and the bearing. Oil for lubrication is discharged into an oil pan through an oil outlet formed at a center housing of the turbocharger.

Meanwhile, the turbocharger is mounted to the engine. An oil drain joint is provided at the engine to introduce oil discharged from the turbocharger into the engine block via the oil drain joint.

When the oil drain joint is deformed in a state of being assembled to the engine, a decrease in sealability may occur, resulting in oil leakage. Such deformation of the oil discharge joint may occur due to the mounting structure of the turbocharger and the weight and vibration conditions of the exhaust system. Therefore, it is necessary to prevent the oil leakage phenomenon from occurring due to the deformation of the drain joint.

The statements made in this section merely serve to enhance an understanding of the general background of the invention and are not to be construed as admissions or any suggestion that these statements constitute prior art that is already known to a person skilled in the art.

Disclosure of Invention

Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a coupling device for a turbocharger capable of avoiding an oil leakage phenomenon by an improved coupling structure between a structure supporting the turbocharger and an oil drain joint, and an engine including the coupling device for coupling the turbocharger therewith.

In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of a turbocharger coupling device comprising: a support bracket having one end supported by a portion of the turbocharger and the other end formed with a joint through-hole through which an oil discharge joint extends, the support bracket being coupled to an outer surface of the engine such that the joint through-hole is aligned with an oil inlet formed at the engine.

The oil discharge joint may be fitted in the oil inlet while extending through the joint through-hole.

The joint through-hole may be formed so as not to interfere with an oil discharge joint fitted in the oil inlet.

The inner diameter of the connector through-hole may be greater than the outer diameter of the oil drain connector so that the oil drain connector does not interfere with the connector through-hole.

The oil inlet may have an inner surface machined using a reaming, the oil drain fitting tightly in the oil inlet.

The inner surface of the oil inlet may be machined to have a thread. The oil drain fitting may be threadably fitted in the oil inlet.

According to another aspect of the present invention, there is provided an engine equipped with a turbocharger connected thereto, comprising: a support bracket having one end supported by a portion of the turbocharger and the other end formed with a joint through-hole, the support bracket being coupled to an outer surface of the engine such that the joint through-hole is aligned with an oil inlet port formed at the engine; and an oil discharge joint having one end receiving oil discharged from the turbocharger therethrough and the other end fitted in the oil inlet while extending through the joint through-hole.

With the above configuration, the present invention provides the following effects. That is, the oil discharge joint is provided separately from the support bracket and is coupled to the oil inlet while extending through the joint through-hole. Therefore, even when the support bracket is partially deformed due to the weight and vibration conditions of the exhaust system, the deformation force acting on the support bracket is not transmitted to the oil drain joint, and therefore, the sealability between the oil drain joint and the engine block can be maintained. As a result, the oil introduced into the oil inlet through the oil discharge joint can be prevented from leaking outward.

Drawings

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a view showing a state in which a turbocharger is coupled to an engine;

fig. 2 is a view showing a state before a support bracket and an oil drain joint according to a first embodiment of the present invention are coupled; and

fig. 3 is a view showing a state before a support bracket and an oil drain joint according to a second embodiment of the present invention are coupled.

Detailed Description

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Fig. 1 is a view showing a state in which a turbocharger 40 is coupled to an engine 30. As shown in fig. 1, the support bracket 10 is coupled at a lower end thereof to the engine block 30a by bolts. The turbocharger 40 is coupled to the upper end of the support bracket 10, and thus the turbocharger 40 is supported by the support bracket 10.

An oil outlet 41 is formed at the center housing 40a of the turbocharger 40 to discharge oil for lubrication in the turbocharger 40. As shown in fig. 2, an oil inlet 31 is formed at the engine block 30 a. The oil discharge joint 20 is connected to the oil inlet 31. According to this configuration, the oil discharged through the oil outlet 41 is introduced into the engine block 30a via the oil inlet 31 and the oil discharge joint 20.

Meanwhile, the present invention provides a configuration for avoiding interference between the support bracket 10 and the oil discharge joint 20. With this arrangement, according to the present invention, as shown in fig. 2 and 3, one end of the support bracket 10 is supported by a portion of the turbocharger 40. In addition, a joint through-hole 11 is formed at the other end of the support bracket 10 so that the oil drain joint 20 can extend therethrough. The support bracket 10 is coupled to an outer surface of the engine 30 such that the joint through-hole 11 is aligned with an oil inlet 31 formed at the engine 30.

The oil discharge joint 20 extending through the joint through-hole 11 is fitted in the oil inlet 31.

In this case, the support bracket 10 is further formed at the other end thereof with coupling holes 12 respectively arranged at opposite sides of the joint through-hole 11. Accordingly, the support bracket 10 may be coupled to the engine block 30a by a screw or bolt coupled to the coupling hole 12.

In other words, according to the above configuration, the joint through-hole 11 is formed to be aligned with the oil inlet 31, and the oil discharge joint 20 is provided separately from the support bracket 10 and coupled to the oil inlet 31 while extending through the joint through-hole 11.

Therefore, even when the support bracket 10 is partially deformed due to the weight and vibration conditions of the exhaust system as described above, the deformation force acting on the support bracket 10 is not transmitted to the oil drain joint 20. As a result, the sealability between the oil discharge joint 20 and the engine block 30a is maintained, and therefore, the oil introduced into the oil inlet 31 via the oil discharge joint 20 can be prevented from leaking.

In addition, in the present invention, the joint through hole 11 should not interfere with the oil discharge joint 20 coupled to the oil inlet 31.

In a preferred embodiment of the present invention, the joint through-hole 11 is formed to have an inner diameter greater than an outer diameter of the oil drain joint 20 to prevent the oil drain joint 20 from interfering with the joint through-hole 11.

In other words, even when the support bracket 10 is partially deformed by an external force or vibration, the joint through-hole 11 does not interfere with the oil drain joint 20 by virtue of a gap formed between the inner diameter of the joint through-hole 11 and the outer diameter of the oil drain joint 20.

Meanwhile, as a structure for coupling the oil discharge joint 20 to the oil inlet 31 according to the first embodiment of the present invention, a reaming (remaining) may be used to machine an inner surface of the oil inlet 31, and the oil discharge joint 20 may be tightly fitted in the reamed oil inlet 31, as shown in fig. 2.

On the other hand, as the structure for coupling the oil discharge joint 20 to the oil inlet 31 according to the second embodiment of the present invention, the inner surface of the oil inlet 31 may be processed to have threads, and the oil discharge joint 20 may be screw-fitted in the oil inlet 31, as shown in fig. 3. In this case, a gasket (not denoted by reference numeral) may be provided between the coupling portion of the oil drain joint 20 and the oil inlet 31 to enhance sealability.

Meanwhile, the present invention may provide a configuration for coupling the turbocharger 40 to the engine 30 through the support bracket 10 and the oil discharge joint 20.

With this arrangement, in the preferred embodiment of the present invention, one end of the support bracket 10 is supported by a portion of the turbocharger 40. In addition, a joint through-hole 11 is formed at the other end of the support bracket 10. The support bracket 10 is coupled to an outer surface of the engine 30 such that the joint through-hole 11 is aligned with an oil inlet 31 formed at the engine 30.

The oil discharged from the turbocharger 40 is introduced at one end of the oil drain joint 20. The other end portion of the oil discharge joint 20 is fitted in the oil inlet 31 while extending through the joint through-hole 11.

In other words, according to the above configuration, the oil discharge joint 20 is provided separately from the support bracket 10 and is coupled to the oil inlet 31 while extending through the joint through-hole 11. Therefore, even when the support bracket 10 is partially deformed due to the weight and vibration conditions of the exhaust system as described above, the deformation force acting on the support bracket 10 is not transmitted to the oil drain joint 20, and therefore, the sealability between the oil drain joint 20 and the engine block 30a can be maintained. As a result, the oil introduced into the oil inlet 31 via the oil discharge joint 20 is prevented from leaking outward.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and deletions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.