Integrated oil-gas separation system arranged at high position

Abstract

The invention discloses an integrated high-position arrangement oil-gas separation system, and relates to the field of engine design and manufacture. The oil-gas separation mechanism communicates with the discharge pipeline and is used for separating oil and gas in the discharge pipeline; the oil-gas separation mechanism is located on the surface of the engine and close to an exhaust port, and the length of an exhaust pipeline between the oil-gas separation mechanism and the exhaust port of the engine is shortened. According to the integrated oil-gas separation system arranged at the high position, the respirator is installed at the position, close to the exhaust port, of the rear cover, so that a gas inlet pipeline between the respirator and the exhaust port is greatly reduced or even eliminated, the influence time of a high and cold environment on gas flowing through the pipeline is shortened, and therefore the gas flow rate of the pipeline is increased. The technical problem that when an existing oil-gas separation mechanism is used, the freezing risk exists is effectively solved, then the freezing risk and the oil leakage risk of an engine are reduced, and the product reliability and the compliance risk are improved.

Description

Technical Field

[0001] The invention relates to the field of engine design and manufacturing, and in particular to an integrated high-position oil-gas separation system. Background Art

[0002] The role of the engine is to provide power output for the vehicle or other power conversion mechanisms, but the emissions generated by the engine are strictly controlled by national laws and regulations. Since the implementation of National VI, the regulations on engine emissions have become increasingly stringent, and the particle size requirements for emissions have been increased from the exhaust pipe to the exhaust pipe and respirator outlet.

[0003] like Figure 3 and Figure 4 As shown, it can be seen that the existing oil-gas separation mechanism (breathing device 3) is arranged on the cylinder block 5 of the engine, and the exhaust pipeline is divided into an intake pipeline 2 and an exhaust pipeline 4. When in use, the oil-gas separation mechanism takes air from the cylinder head cover 1, and connects it to the oil-gas separation mechanism through the intake pipeline 2. The oil-gas separation mechanism separates the exhausted oil and gas, wherein the oil droplets return to the oil pan through the engine body oil return channel; the gas is discharged to the atmosphere through the exhaust pipeline 4.

[0004] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0005] The oil-gas separation mechanism has an ice risk: Since the gas exhausted by the engine contains a small amount of water, this water will be discharged into the atmosphere along the exhaust pipe (exhaust pipe dripping, smoking), and the exhaust pipe is exposed to the outside, so that in a low-temperature high-cold environment, the water in the gas will freeze and condense on the exhaust pipe, causing the gas to be unable to flow normally, and the ice residue will enter the oil-gas separation mechanism along with the gas, causing the oil-gas separation mechanism to be unable to separate the oil and gas normally, seriously affecting the performance of the engine. For this reason, we propose an integrated high-position oil-gas separation system. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides an integrated high-position oil-gas separation system to solve the technical problem that the existing oil-gas separation mechanism has the risk of freezing when in use.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] An integrated high-position oil-gas separation system is used to process the gas discharged by the engine, and is characterized in that the system comprises:

[0011] an exhaust line for directing the flow of engine gases;

[0012] An oil-gas separation mechanism connected to the exhaust pipeline is used to separate oil and gas from the gas flowing through the exhaust pipeline, and the separated gas and oil droplets enter the atmosphere and the oil pan respectively;

[0013] Gas: The gas outlet pipeline is connected to the exhaust port of the oil-gas separation mechanism and is used to discharge the gas after oil-gas separation.

[0014] Oil droplets, after being separated by the oil-gas separation mechanism, flow back to the oil pan along the oil return port on the rear cover surface and the gear hole in the cylinder head.

[0015] The oil-gas separation mechanism is located on the surface of the engine and close to the exhaust port, and is used to limit the length of the exhaust pipeline between the oil-gas separation mechanism and the engine exhaust port.

[0016] Preferably, the exhaust pipeline is divided into two parts: an air inlet pipeline and an air outlet pipeline.

[0017] Intake pipeline: the intake pipeline is connected between the engine and the oil-gas separation mechanism, and the intake pipeline is communicated with the cylinder head cover of the engine, and is used to introduce the gas exhausted by the engine into the oil-gas separation mechanism;

[0018] Gas outlet pipeline: The gas outlet pipeline is connected to the exhaust port of the oil-gas separation mechanism and is used to discharge the gas after oil-gas separation to the outside.

[0019] Preferably, the other end of the air intake pipeline is connected to the cylinder head cover of the engine.

[0020] Preferably, the oil-gas separation mechanism is installed on the engine cylinder head and corresponds to the exhaust port of the engine cylinder head;

[0021] Among them, the engine cylinder head is connected to a rear cover, and the rear cover is used as a connecting component between the engine cylinder head and the oil-gas separation mechanism. The oil-gas separation mechanism is set on the engine surface and close to the exhaust port. In this way, the distance between the oil-gas separation mechanism and the engine exhaust port will be shortened, thereby reducing the impact time of the high-cold environment on the gas flowing through this section of the pipeline.

[0022] Preferably, the oil droplets separated by the oil-gas separation mechanism return to the oil pan along the oil return port on the surface of the rear cover and the gear hole in the cylinder head.

[0023] Preferably, the oil-gas separation mechanism includes a breather.

[0024] (III) Beneficial effects

[0025] Since the breather is installed on the surface of the rear cover and close to the exhaust port of the engine, the air intake line between the breather and the exhaust port is greatly reduced or even eliminated, thereby reducing the impact time of the high-cold environment on the gas flowing through this section of the pipeline. Therefore, the technical problem of the existing oil-gas separation mechanism having the risk of icing during use is effectively solved, thereby reducing the risk of icing and oil leakage of the engine and improving product reliability and compliance risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0027] Figure 1 It is the overall structure diagram of the present invention;

[0028] Figure 2 It is a front view of the back cover of the present invention;

[0029] Figure 3 It is a front view of the structural arrangement of the oil-gas separation mechanism in the prior art;

[0030] Figure 4 It is a left view of the structural arrangement of the oil-gas separation mechanism in the prior art. Description of the drawings:

[0032] 1. Cylinder head cover; 2. Intake pipe; 3. Breather; 4. Exhaust pipe; 5. Cylinder block; 6. Rear cover; 7. Cylinder head. DETAILED DESCRIPTION

[0033] The embodiment of the present application solves the technical problem of the oil and gas separation mechanism in the prior art that there is a risk of icing when in use by providing an integrated high-position oil and gas separation system. When the existing oil and gas separation mechanism is in use, the breather is installed on the surface of the rear cover and close to the exhaust port of the engine, thereby greatly reducing the intake pipe between the breather and the exhaust port, and even eliminating the intake pipe between the two, thereby reducing the impact time of the high-cold environment on the gas flowing through this section of the pipeline, thereby reducing the risk of engine icing and oil leakage, and improving product reliability and compliance risks.

[0034] Embodiment: The technical solution in the embodiment of the present application is to solve the technical problem that the oil and gas separation mechanism has the risk of freezing when in use. The overall idea is as follows:

[0035] In view of the problems existing in the prior art, the present invention provides an integrated high-position oil-gas separation system for processing the gas exhausted by the engine, characterized in that the system mainly includes two parts, one is an exhaust pipeline for guiding the flow of engine gas; the other is an oil-gas separation mechanism (breathing device 3) connected to the exhaust pipeline, the oil-gas separation mechanism is used to separate the oil and gas of the gas flowing through the exhaust pipeline, and the separated gas and oil droplets enter the atmosphere and the oil pan respectively.

[0036] The air is discharged into the atmosphere along the exhaust pipeline, and the exhaust pipeline is divided into two parts: an air inlet pipeline 2 and an air outlet pipeline 4.

[0037] Intake pipe 2: The intake pipe 2 is connected between the engine and the oil-gas separation mechanism. The intake pipe 2 is communicated with the cylinder head cover 1 of the engine and is used to introduce the gas exhausted by the engine into the oil-gas separation mechanism.

[0038] Gas outlet pipeline 4: the gas outlet pipeline 4 is connected to the exhaust port of the oil-gas separation mechanism and is used to discharge the gas after oil-gas separation to the outside.

[0039] The oil droplets separated by the oil-gas separation mechanism eventually flow back to the oil pan along the oil return port on the surface of the rear cover 6 and the gear holes in the cylinder head 7.

[0040] The important improvement of the present application is how to shorten the pipeline between the oil-gas separation mechanism and the engine.

[0041] The reason why the pipeline needs to be shortened at this location is that the gas exhausted by the engine contains a small amount of water, which will be discharged into the atmosphere along the exhaust pipe (exhaust pipe dripping, smoking), and the exhaust pipe is exposed to the outside, so that in a cold and cold environment with low temperature, the water in the gas will freeze and condense on the exhaust pipe, causing the gas to be unable to flow normally, and the ice residue will enter the oil-gas separation mechanism with the gas, causing the oil-gas separation mechanism to be unable to separate the oil and gas normally, seriously affecting the performance of the engine. This problem can be solved by shortening the pipeline between the oil-gas separation mechanism and the engine. The details are as follows:

[0042] By connecting a rear cover 6 to the engine cylinder head 7, using the rear cover 6 as a component connecting the engine cylinder head 7 and the oil-gas separation mechanism, the oil-gas separation mechanism is set on the engine surface and close to the exhaust port. In this way, the distance between the oil-gas separation mechanism and the engine exhaust port will be shortened, thereby reducing the impact time of the high-cold environment on the gas flowing through this section of the pipeline.

[0043] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An integrated high-position oil-gas separation system for treating the gas discharged from the engine, characterized in that: The system includes: An exhaust pipe connected to the engine; An oil-gas separation mechanism is connected to the discharge pipeline and is used to separate the oil and gas in the discharge pipeline; The oil-gas separation mechanism is located on the engine surface and close to the exhaust port, thereby shortening the length of the exhaust pipeline between the oil-gas separation mechanism and the engine exhaust port.

2. The integrated high-position oil-gas separation system according to claim 1, characterized in that: The exhaust pipeline is divided into an intake pipeline (2) and an exhaust pipeline (4); the intake pipeline (2) is connected between the engine and the oil-gas separation mechanism and is used to guide the gas exhausted by the engine into the oil-gas separation mechanism; The gas outlet pipeline (4) is connected to the gas outlet of the oil-gas separation mechanism and is used to discharge the gas after the oil-gas separation to the outside.

3. An integrated high-position oil-gas separation system as claimed in claim 2, characterized in that: The other end of the air intake pipeline (2) is in communication with the cylinder head cover (1) of the engine.

4. The integrated high-position oil-gas separation system according to claim 1, characterized in that: The oil-gas separation mechanism is mounted on the engine cylinder head (7) and corresponds to the exhaust port of the engine cylinder head (7); Wherein, the engine cylinder head (7) is connected to a rear cover (6), and the engine cylinder head (7) is connected to the oil-gas separation mechanism via the rear cover (6).

5. The integrated high-position oil-gas separation system according to claim 4, characterized in that: The oil droplets separated by the oil-gas separation mechanism return to the oil pan along the oil return port on the surface of the rear cover (6) and the gear hole in the cylinder cover (7).

6. The integrated high-position oil-gas separation system according to claim 1, characterized in that: The oil-gas separation mechanism comprises a breather (3).

Images