CN207944997U - Engine oil-gas separation device and engine - Google Patents

Abstract

The utility model discloses a kind of oil-gas separating device of engine and engines, the oil-gas separating device of engine, including gs-oil separator and power turbine, the air inlet of power turbine with the exhaust pipe of engine for being connected to, the output end of power turbine and the driving axis connection of gs-oil separator, the air inlet of gs-oil separator with crankcase for being connected to, and the oil return opening of gs-oil separator with crankcase for being connected to；In use, the air inlet of power turbine is accessed the exhaust pipe of engine, rotated using engine exhaust driving power turbine, drive gs-oil separator to rotate using power turbine, gs-oil separator is by the Oil-gas Separation in crankcase；It can be seen that, above-mentioned oil-gas separating device of engine carries out Oil-gas Separation using engine exhaust energy, the power of lubricating oil pump need not be consumed, it can not only energy-saving and emission-reduction, reduce consumption of lubricating oil, exhaust gas can be utilized to drive power turbine high speed rotation to realize efficiently separating for oil gas again, improve the effect of Oil-gas Separation.

Description

Engine oil-gas separation device and engine

technical field

The utility model relates to the technical field of engines, in particular to an engine oil-gas separation device and an engine.

Background technique

During the combustion process of the diesel engine, the high-temperature and high-pressure gas in the cylinder will enter the crankcase through the gap between the piston ring and the cylinder wall, resulting in blow-by. Blow-by gases can cause excessive pressure in the crankcase, thinning of the oil, etc., so blow-by gases must be vented from the crankcase. The gas discharged from the crankcase contains a large amount of oil mist. If it is discharged directly, not only will the engine discharge exceed the standard, but also the engine oil consumption will be too high. Therefore, an oil-gas separator is needed to separate the oil and gas.

In the prior art, the oil-gas separator is driven to rotate by engine oil pressure to realize oil-gas separation, resulting in increased oil consumption and increased power consumption of the oil pump, and the speed of the oil-driven oil-gas separator is not high enough, resulting in insufficient oil-gas separation.

Therefore, how to provide an engine oil-gas separation device that has a higher rotational speed to achieve efficient oil-gas separation while reducing the power consumption of the oil pump has become an important technical problem to be solved urgently by those skilled in the art.

Utility model content

In view of this, the first purpose of this utility model is to provide an engine oil-gas separation device, which has a higher rotating speed to achieve efficient separation of oil and gas, while reducing the power consumption of the oil pump, the second of the utility model The object is to provide an engine comprising the above-mentioned engine oil-gas separation device.

In order to achieve the above object, the utility model provides the following technical solutions:

An engine oil-gas separation device, comprising an oil-gas separator and a power turbine, the intake port of the power turbine is used to communicate with the engine exhaust pipe, the output end of the power turbine is connected to the drive shaft of the oil-gas separator, The air inlet of the oil-gas separator is used to communicate with the crankcase, and the oil return port of the oil-gas separator is used to communicate with the crankcase.

Preferably, the intake end of the power turbine is provided with a flow control valve for controlling the flow of intake air.

Preferably, the output end of the power turbine is connected to the drive shaft of the oil-gas separator through a hydraulic coupling.

Preferably, the gas outlet of the oil-gas separator is used to communicate with the engine intake pipe or the atmosphere.

An engine, including an oil-gas separation device, the oil-gas separation device is the engine oil-gas separation device described in any one of the above.

Preferably, a turbocharging system is also included, the turbocharging system includes a supercharging turbine and a compressor connected to the supercharging turbine, the supercharging turbine is connected in series with the exhaust pipe of the engine, the The compressor is connected in series with the intake pipe of the engine.

Preferably, the power turbine of the engine oil-gas separation device is connected in parallel with the supercharger turbine, the intake port of the power turbine communicates with the front exhaust pipe of the supercharger turbine, and the exhaust port of the power turbine communicates with the supercharger turbine The rear exhaust pipe is connected.

Preferably, the power turbine of the engine oil-gas separation device is connected in series with the supercharging turbine.

Preferably, the air outlet of the oil-air separator of the engine oil-air separation device communicates with the air inlet pipe of the compressor.

Preferably, an intercooler is connected in series on the intake pipe after the compressor.

In order to achieve the above-mentioned first purpose, the engine oil-gas separation device provided by the utility model includes an oil-gas separator and a power turbine, wherein the air inlet of the power turbine is used to communicate with the engine exhaust pipe, and the output end of the power turbine is connected to the oil-gas The drive shaft of the separator is connected, the air inlet of the oil-air separator is used to communicate with the crankcase, and the oil return port of the oil-air separator is used to communicate with the crankcase; in application, the air inlet of the power turbine is connected to the engine exhaust The air pipe uses the engine exhaust gas to drive the power turbine to rotate, and uses the power turbine to drive the oil-gas separator to rotate. The oil-gas separator separates the oil and gas in the crankcase. The separated gas can be discharged to the atmosphere or connected to the engine intake pipe. The separated oil It can be seen that the above-mentioned engine oil-gas separation device uses the energy of engine exhaust gas to separate oil and gas without consuming the power of the oil pump. Realize the efficient separation of oil and gas, and improve the effect of oil and gas separation.

In order to achieve the above-mentioned second purpose, the utility model also provides an engine, which includes the engine oil-gas separation device as described above, because the engine oil-gas separation device has the above-mentioned technical effects, the engine with the engine oil-gas separation device also It should have a corresponding technical effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the engine oil-gas separation device that the utility model embodiment provides;

Fig. 2 is a schematic structural view of the engine provided by the embodiment of the present invention.

In Figure 1 and Figure 2:

1 is the oil-gas separator; 2 is the power turbine; 3 is the flow control valve; 4 is the control valve driver; 5 is the output end of the power turbine; 6 is the hydraulic coupling; 7 is the oil return pipe; 8 is the exhaust of the oil-gas separator 9 is the crankcase outlet pipe; 10 is the engine; 11 is the intercooler; 12 is the intake pipe after the compressor; 13 is the intake pipe of the compressor; 14 is the compressor; 15 is the turbocharger; 16 is after the turbocharger Exhaust pipe; 17 is the rear exhaust pipe of the power turbine; 18 is the front exhaust pipe of the turbocharger; 19 is the front exhaust pipe of the power turbine.

Detailed ways

The first purpose of this utility model is to provide an engine oil-gas separation device, the structure design of the engine oil-gas separation device has a higher rotational speed to achieve efficient separation of oil and gas, and at the same time can reduce the power consumption of the oil pump, the utility model The second object of the new model is to provide an engine based on the above-mentioned engine oil-gas separation device.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to FIG. 1 , which is a schematic structural diagram of an engine oil-gas separation device provided by an embodiment of the present invention.

An engine oil-gas separation device provided by an embodiment of the utility model includes an oil-gas separator 1 and a power turbine.

Wherein, the above-mentioned engine oil-gas separation device can be used for turbocharged engines or naturally aspirated engines. When used for turbocharged engines, an independent power turbine 2 can be set to drive the oil and gas exclusively outside the turbocharger 15. Separator 1 rotates, also can drive oil-air separator 1 to rotate with supercharging turbine 15 as power turbine 2, set transmission member between supercharging turbine 15 and oil-gas separator 1 and get final product, the air inlet of power turbine 2 is used In order to communicate with the exhaust pipe of the engine, the output end 5 of the power turbine 2 is connected to the drive shaft of the oil-gas separator 1, the air inlet of the oil-gas separator 1 is used to communicate with the crankcase, and the oil return port of the oil-gas separator 1 is used for communicated with the crankcase.

Compared with the prior art, the engine oil-gas separation device provided by the utility model connects the air inlet of the power turbine 2 to the exhaust pipe of the engine, uses the exhaust gas of the engine to drive the power turbine 2 to rotate, and uses the power turbine 2 to drive The oil-gas separator 1 rotates, and the oil-gas separator 1 separates the oil and gas in the crankcase, and the separated gas can be discharged to the atmosphere or connected to the engine intake pipe, and the separated engine oil is returned to the crankcase; it can be seen that the above-mentioned engine oil-gas separation The device uses the energy of engine exhaust gas to separate oil and gas without consuming the power of the oil pump. It can not only save energy and reduce emissions, reduce oil consumption, but also use exhaust gas to drive the power turbine 2 to rotate at high speed to achieve efficient oil and gas separation and improve the effect of oil and gas separation.

Different stages of engine operation have different requirements for oil-gas separation. For this reason, in this utility model embodiment, the intake end of the power turbine 2 is provided with a flow control valve 3 for controlling the intake flow. The flow control valve 3 is provided with a control valve driver 4, the flow control valve 3 can be arranged on the connecting pipe between the intake end of the power turbine 2 and the exhaust pipe as shown in Figure 1, and can also be directly integrated into the power turbine 2.

Specifically, in the stage of engine start-up and low speed and low load, the exhaust flow of the engine is low, the energy is small, the amount of blow-by gas in the crankcase of the engine is small, and the amount of oil and gas that needs to be separated is also small. Effect and performance of the engine, the opening of the flow control valve 3 should be the minimum, and it is sufficient to keep the power turbine 2 driving the oil-gas separator 1 to achieve the basic separation effect.

When the engine is under high-speed and heavy-load conditions, the engine crankcase has a large amount of blow-by gas, and the oil mist content in the blow-by gas is high, so the amount of oil and gas that needs to be separated by the oil-gas separator 1 is large; at the same time, the exhaust energy of the engine at this stage is high and the flow rate is large, exceeding The energy demand of the turbocharger 15, so in order to ensure the separation effect of the oil-gas separator 1 and the full utilization of the exhaust gas energy at this stage, the opening of the exhaust gas flow control valve 3 of the power turbine 2 should be the largest, and the amount of exhaust gas passing through the power turbine 2 increases. The increased energy recovered by the turbine 2 drives the separation effect of the oil-gas separator 1 to increase, and maximizes the recovery of exhaust gas energy on the basis of ensuring the supercharging effect of the supercharger.

When the working condition of the engine changes suddenly, in order to avoid the sudden change in the speed of the oil-gas separator 1 driven by the power turbine 2 and affect the reliability, the flow control valve 3 is mainly controlled by the stable speed of the power turbine 2. During the sudden change in the working condition, the opening is fine-tuned to maintain The system speed is stable and the reliability is improved.

To further optimize the above-mentioned technical solution, in the embodiment of the present invention, the output end 5 of the power turbine 2 is connected with the drive shaft of the oil-gas separator 1 through a hydraulic coupling 6, which is a kind of The power source is connected with the working machine, and the hydraulic transmission device that transmits the torque by the change of the liquid momentum torque, by setting the hydraulic coupling 6, can further ensure the stable speed of the oil-gas separation system when the engine working condition changes suddenly.

Of course, the output end 5 of the power turbine 2 and the drive shaft of the oil-gas separator 1 can also be connected in other ways, for example, the output end 5 of the power turbine 2 can be connected with the drive shaft of the oil-air separator 1, Or achieve a vertical arrangement with articulated gears.

After the oil-gas separator 1 separates the oil and gas, the engine oil flows back into the crankcase, and the separated gas can lead to the engine intake pipe or be directly discharged to the atmosphere. Therefore, in the embodiment of the utility model, the gas outlet of the oil-gas separator 1 is used To communicate with the engine intake pipe or the atmosphere.

The embodiment of the utility model also provides a kind of engine, and this engine comprises the above-mentioned engine oil-gas separation device, please refer to Fig. 2, Fig. 2 is the structural diagram of the engine that the utility model embodiment provides, the engine oil-gas separation device The intake port of the power turbine 2 is communicated with the exhaust pipe of the engine 10, the output end 5 of the power turbine 2 is connected with the drive shaft of the oil-gas separator 1, and the exhaust port of the power turbine 2 can be connected to the exhaust pipe of the engine 10, Also can discharge directly, the air inlet of oil-gas separator 1 is communicated with the crankcase of engine 10 by crankcase outlet pipe 9, and the oil return port of oil-gas separator 1 is communicated with the crankcase of engine 10 by oil return pipe 7, and oil-gas separator The exhaust port of 1 can be directly connected to the atmosphere or connected to the intake pipe of the engine 10. Since the engine 10 adopts the above-mentioned engine oil-gas separation device, please refer to the above-mentioned embodiment for the beneficial effects of the engine 10.

Preferably, the embodiment of the utility model provides a turbocharged engine, the engine also includes a turbocharging system, the turbocharging system includes a turbocharging turbine 15 and a compressor 14 connected to the turbocharging turbine 15, and the supercharging The turbine 15 is connected in series with the exhaust pipe of the engine 10, that is, the intake port of the turbocharger is communicated with the engine 10 through the front exhaust pipe of the supercharger turbine, and the exhaust port of the supercharger turbine is connected with the rear exhaust pipe of the supercharger turbine 16. The compressor 14 is connected in series with the intake pipe of the engine 10, that is, the air inlet of the compressor 14 is connected with the compressor inlet pipe 13, and the exhaust port of the compressor 14 is connected with the compressor rear inlet pipe 12.

Further, as shown in Figure 2, in the embodiment of the present utility model, the power turbine of the engine oil-gas separation device is connected in parallel with the supercharger turbine 15, and the air inlet of the power turbine 2 is connected to the supercharger turbine through the front exhaust pipe 19 of the power turbine. The front exhaust pipe 18 communicates, the flow control valve 3 is arranged on the power turbine front exhaust pipe 19, and the power turbine rear exhaust pipe 17 through which the exhaust port of the power turbine 2 passes communicates with the supercharger turbine rear exhaust pipe 16. The connection structure, together with the flow control valve 3, can effectively control the flow of exhaust gas flowing through the power turbine 2, improve the oil-gas separation effect, and help ensure the stability of the oil-gas separation system.

Of course, in addition to the above-mentioned parallel connection, the power turbine of the engine oil-gas separation device and the supercharger turbine 15 can also be connected in series, or, with the supercharger turbine 15 as the power turbine 2, through a transmission member, such as a bevel gear transmission The structure, the worm gear transmission structure, etc. are connected with the drive shaft of the oil-gas separator 1.

To further optimize the above-mentioned technical solution, in the embodiment of the present invention, the gas outlet of the oil-gas separator 1 of the engine oil-gas separator communicates with the air inlet pipe 13 of the compressor through the oil-gas separator exhaust pipe 8 .

Further, an intercooler 11 is connected in series on the intake pipe 12 after the compressor.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An engine oil-gas separation device, characterized in that it comprises an oil-gas separator and a power turbine, the air intake of the power turbine is used to communicate with the engine exhaust pipe, and the output end of the power turbine is separated from the oil-gas The drive shaft of the oil separator is connected, the air inlet of the oil-air separator is used to communicate with the crankcase, and the oil return port of the oil-air separator is used to communicate with the crankcase. 2 . The engine oil-gas separation device according to claim 1 , wherein a flow control valve for controlling the flow of intake air is provided at the intake end of the power turbine. 3 . 3. The engine oil-air separation device according to claim 1 or 2, characterized in that the output end of the power turbine is connected to the drive shaft of the oil-air separator through a hydraulic coupling. 4. The engine oil-gas separation device according to claim 1 or 2, characterized in that the gas outlet of the oil-gas separator is used to communicate with the engine intake pipe or the atmosphere. 5. An engine, comprising an oil-gas separation device, characterized in that the oil-gas separation device is the engine oil-gas separation device according to any one of claims 1-4. 6. The engine according to claim 5, further comprising a turbocharging system, the turbocharging system comprising a turbocharging turbine and a compressor connected to the turbocharging turbine, the turbocharging turbine It is connected in series with the exhaust pipe of the engine, and the compressor is connected in series with the intake pipe of the engine. 7. The engine according to claim 6, wherein the power turbine of the engine oil-gas separation device is connected in parallel with the supercharging turbine, and the air inlet of the power turbine is communicated with the front exhaust pipe of the supercharging turbine, The exhaust port of the power turbine communicates with the exhaust pipe behind the turbocharger. 8. The engine according to claim 6, characterized in that, the power turbine of the engine oil-air separation device is connected in series with the supercharger turbine. 9. The engine according to any one of claims 6-8, characterized in that the air outlet of the oil-air separator of the engine oil-air separation device communicates with the air inlet pipe of the compressor. 10. The engine according to claim 9, characterized in that an intercooler is connected in series on the intake pipe after the compressor.