CN211975107U - Crankcase oil gas treatment mechanism and engine provided with same - Google Patents
Crankcase oil gas treatment mechanism and engine provided with same Download PDFInfo
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- CN211975107U CN211975107U CN201922461998.6U CN201922461998U CN211975107U CN 211975107 U CN211975107 U CN 211975107U CN 201922461998 U CN201922461998 U CN 201922461998U CN 211975107 U CN211975107 U CN 211975107U
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Abstract
The utility model discloses a crankcase oil gas processing mechanism and an engine provided with the mechanism, comprising a crankcase and a supercharger which are arranged on the engine, wherein the crankcase is provided with a cylinder cover, the cylinder cover is connected with a gas discharge pipe, the cylinder cover is provided with a labyrinth oil gas separation device, the exhaust outlet of the crankcase is communicated with the inlet of the labyrinth oil gas separation device, the gas discharge pipe is connected with the outlet end of the labyrinth oil gas separation device, the gas discharge pipe is also provided with a back pressure regulator, the back pressure regulator comprises a regulator shell, the regulator shell comprises an inlet section and an outlet section which are oppositely arranged, a pressure regulating plate is arranged between the inlet section and the outlet section, the inlet section, the outlet section and the pressure regulating plate are connected into a whole through bolts, the pressure regulating plate is provided with a plurality of gas passing holes which are communicated with an inner cavity of the inlet section and an inner cavity, the rear part of the discharge section is connected with the supercharger through a gas pipeline. The utility model discloses can guarantee the efficiency of booster, guarantee the fresh air volume that gets into the engine to the dynamic property and the economic nature of engine have been improved.
Description
Technical Field
The utility model relates to a crankcase oil gas treatment device constructs and installs engine of this mechanism.
Background
When the engine is running, part of the high-pressure combustible mixture and burnt gas in the combustion chamber can leak into the crankcase through the clearance between the piston group and the cylinder. The waste gas in the crankcase is unburnt fuel gas, water vapor, waste gas and the like, which can dilute engine oil, reduce the service performance of the engine oil, accelerate the oxidation and the deterioration of the engine oil and cause certain influence on the performance and the structure of an engine. In addition, national regulations require that national VI discharge must enforce respirator closed circulation, that is, the waste gas of the crankcase cannot be directly discharged into the atmosphere, and the waste gas must be returned to a supercharger air inlet system of the diesel engine through a pipeline to participate in combustion after being discharged, because the supercharger can generate certain negative pressure when breathing in, the negative pressure can cause the crankcase to be changed from positive pressure in the open state into negative pressure, the air leakage of a piston is increased, thereby the waste gas of the crankcase is increased, the flow of the waste gas entering an oil-gas separator is increased, under the condition that the separation efficiency is not changed, the content of the discharged gas is increased, the waste gas containing oil enters the supercharger, and the inner wall and the blades of the supercharger are attached with a great amount of mixed oil sludge of the waste gas and the engine oil, so that the efficiency of.
Disclosure of Invention
The to-be-solved first technical problem of the utility model is to provide a crankcase oil gas treatment mechanism, backpressure when this mechanism can increase the crankcase and give vent to anger, the negative pressure that comes the balanced booster to bleed to reduce the increase of the piston air leakage that the crankcase leads to because of the booster negative pressure, reduce the probability that oil gas got into the booster, guarantee the efficiency of booster.
For solving above-mentioned technical problem, the crankcase oil gas processing mechanism that provides, including setting up crankcase and the booster on the engine, be equipped with the cylinder head cover on the crankcase, the cylinder head covers and is connected with gas discharge pipe, its characterized in that: labyrinth oil-gas separator is equipped with on the cylinder head cover, the exhaust outlet intercommunication labyrinth oil-gas separator's of crankcase inlet port, the gas outlet end at labyrinth oil-gas separator is connected to the gas discharge pipe, still be equipped with back pressure regulator on the gas discharge pipe, back pressure regulator includes the regulator casing, and the regulator casing is equipped with the pressure regulating board including relative entering section and the discharge section that sets up between entering section and the discharge section, and entering section, discharge section and pressure regulating board pass through bolted connection as an organic whole, be equipped with a plurality of gas holes of crossing that the intercommunication got into section inner chamber and discharge section inner chamber on the pressure regulating board, the rear portion of discharge section is passed through the gas pipeline and is connected with the booster.
The inner cavity of the inlet section is gradually increased from front to back, and the inner cavity of the outlet section is gradually decreased from front to back.
The air holes are uniformly distributed along the center of the pressure regulating plate.
Labyrinth oil gas separator is including setting up the exhaust chamber on the cylinder head cover, the rear portion of exhaust chamber is equipped with the oil gas inlet port that sets up down, be equipped with the oil baffle that corresponds the setting of oil gas inlet port and slope setting on the locular wall rear portion of exhaust chamber, still be connected with the barrier plate that is located oil baffle rear and interval setting on the locular wall of exhaust chamber, wherein part barrier plate connects on the top locular wall of exhaust chamber, another part barrier plate connects on the bottom locular wall of exhaust chamber, the barrier plate of connection on the top locular wall extends towards the bottom locular wall and should set up the gas passageway between barrier plate and the bottom locular wall, the barrier plate of connection at the bottom locular wall extends towards the top locular wall and should set up the gas passageway between barrier plate and the top loc.
And sealing gaskets are respectively arranged between the inlet section and the pressure regulating plate and between the pressure regulating plate and the discharge section.
Adopt the crankcase oil gas processing mechanism of above-mentioned structure, oil gas in the crankcase passes through labyrinth oil gas separation device earlier, through its first oil-gas separation, make fluid return to in the crankcase, gaseous by the gas discharge pipe discharge, through back pressure regulator, the negative pressure that the booster formation of bleeding is balanced to the backpressure of giving vent to anger that increases crankcase waste gas, make the closed circulation of crankcase waste gas and open circulation difference change little, overcome a large amount of oil gas entering booster and reduced the problem of the efficiency of booster, moreover, the steam generator is simple in structure, therefore, the cost is low, and the effect is obvious. The utility model discloses an increase the crankcase and give vent to anger the backpressure and come the equilibrium because of the booster negative pressure of bleeding to the influence that the crankcase pressure formed to reduced the piston air leakage, reduced the oil content of giving vent to anger and oil gas adhesion on the booster, promoted booster efficiency, thereby promoted the dynamic property and the economic nature of engine.
The to-be-solved second technical problem of the utility model is to provide an engine, install the crankcase oil gas treatment mechanism of above-mentioned structure on this engine.
The engine adopting the crankcase oil gas treatment mechanism with the structure can ensure the efficiency of the supercharger and the fresh air quantity entering the engine, thereby improving the dynamic property and the economical efficiency of the engine.
Drawings
The invention will be further described with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the labyrinth oil-gas separation device connected to the crankcase in the embodiment of FIG. 1;
fig. 3 is a schematic structural view taken along line a-a in fig. 1.
Detailed Description
As shown in fig. 1, the present invention provides an embodiment of a crankcase oil-gas processing mechanism, since the basic structure of the engine is the prior art, the basic structure is not described in detail herein, and according to the working principle of the engine and the prior art, it is clear to those skilled in the art that the positions of the components mounted on the engine in the embodiment are known, the connection relationship of the components is only shown in the figure, and the structure and the position of the specific connection on the engine are also not described in detail herein. The embodiment of figure 1 discloses a crankcase oil-gas treatment mechanism, which comprises a crankcase 2, an air filter 6 and a supercharger 5 which are arranged on an engine, wherein a cylinder cover 3 is arranged on the crankcase 2, a gas discharge pipe 4 is connected on the cylinder cover 3, a labyrinth oil-gas separation device is arranged on the cylinder cover 3, an exhaust outlet of the crankcase 2 is communicated with an inlet of the labyrinth oil-gas separation device, the gas discharge pipe 4 is connected with an outlet end of the labyrinth oil-gas separation device, a back pressure regulator is also arranged on the gas discharge pipe, the back pressure regulator comprises a regulator shell 1, the regulator shell comprises an inlet section and an outlet section which are oppositely arranged, a pressure regulating plate 11 is arranged between the inlet section and the outlet section, the inlet section, the outlet section and the pressure regulating plate 11 are connected into a whole through bolts, a plurality of air holes 13 which are communicated with an inner cavity of the inlet section and an inner cavity of the outlet section are, the rear part of the discharge section is connected with the supercharger 5 through an air pipeline 7, and an output pipeline of the air filter 6 is connected with the air pipeline in parallel and is connected with the inlet end of the supercharger 5 together.
Referring to fig. 1 and 3, the inner cavity of the inlet section gradually increases from front to back, the inner cavity of the outlet section gradually decreases from front to back, the plurality of air holes 13 are uniformly distributed around the center of the pressure regulating plate, and sealing gaskets are respectively arranged between the inlet section and the pressure regulating plate and between the pressure regulating plate and the outlet section. After adopting above-mentioned structure, gas discharge pipe 4 gets into back pressure regulator in the back, because advance get into the progressively bigger entering section of inner chamber, therefore can suitable buffer pressure, and through the effect of blockking of pressure regulating board, only partial gas can pass through, therefore adjust the backpressure of giving vent to anger, can hinder the gas pressure of air current operation promptly, thereby reduce the gas volume in the 5 suction gas pipelines of booster, the at utmost reduces the probability that oil gas got into the booster, guarantee the volume of the fresh air who gets into in the booster, thereby guarantee the efficiency of booster.
Referring to fig. 1, the labyrinth oil-gas separation device includes an exhaust chamber disposed on a cylinder head cover, an oil-gas inlet port disposed downward is disposed at the rear of the exhaust chamber, an oil baffle plate disposed corresponding to the oil-gas inlet port and disposed obliquely is disposed at the rear of a chamber wall of the exhaust chamber, a blocking plate disposed at a distance behind the oil baffle plate is further connected to the chamber wall of the exhaust chamber, a part of the blocking plate is connected to a top chamber wall of the exhaust chamber, another part of the blocking plate is connected to a bottom chamber wall of the exhaust chamber, the blocking plate connected to the top chamber wall extends toward the bottom chamber wall, an air passage is disposed between the blocking plate and the bottom chamber wall, the blocking plate connected to the bottom chamber wall extends toward the top chamber wall, and an air passage is disposed between the blocking plate and the top chamber wall, by the above-mentioned structure, a total air passage bent upward and downward can be, the oil-gas separation effect is ensured.
The utility model also provides a make the engine, install the crankcase oil gas processing mechanism of above-mentioned structure on this engine, position and the connection structure that each part concrete connection in the above-mentioned crankcase oil gas processing mechanism can obtain for technical staff in the field are the well-known technique that this no longer gives detailed description.
The utility model discloses do not receive the restriction of above-mentioned embodiment, at this technical field personnel, based on the utility model discloses the simple replacement of the equivalent change of concrete structure and method step is all in the protection scope of the utility model.
Claims (6)
1. The utility model provides a crankcase oil gas processing mechanism, is equipped with the cylinder head cover including setting up crankcase and the booster on the engine on the crankcase, and the cylinder head covers and is connected with gas discharge pipe, its characterized in that: labyrinth oil-gas separator is equipped with on the cylinder head cover, the exhaust outlet intercommunication labyrinth oil-gas separator's of crankcase inlet port, the gas outlet end at labyrinth oil-gas separator is connected to the gas discharge pipe, still be equipped with back pressure regulator on the gas discharge pipe, back pressure regulator includes the regulator casing, and the regulator casing is equipped with the pressure regulating board including relative entering section and the discharge section that sets up between entering section and the discharge section, and entering section, discharge section and pressure regulating board pass through bolted connection as an organic whole, be equipped with a plurality of gas holes of crossing that the intercommunication got into section inner chamber and discharge section inner chamber on the pressure regulating board, the rear portion of discharge section is passed through the gas pipeline and is connected with the booster.
2. The crankcase oil and gas handling mechanism of claim 1, wherein: the inner cavity of the inlet section is gradually increased from front to back, and the inner cavity of the outlet section is gradually decreased from front to back.
3. The crankcase oil and gas handling mechanism of claim 1, wherein: the air holes are uniformly distributed along the center of the pressure regulating plate.
4. The crankcase oil and gas handling mechanism according to any one of claims 1-3, wherein: labyrinth oil gas separator is including setting up the exhaust chamber on the cylinder head cover, the rear portion of exhaust chamber is equipped with the oil gas inlet port that sets up down, be equipped with the oil baffle that corresponds the setting of oil gas inlet port and slope setting on the locular wall rear portion of exhaust chamber, still be connected with the barrier plate that is located oil baffle rear and interval setting on the locular wall of exhaust chamber, wherein part barrier plate connects on the top locular wall of exhaust chamber, another part barrier plate connects on the bottom locular wall of exhaust chamber, the barrier plate of connection on the top locular wall extends towards the bottom locular wall and should set up the gas passageway between barrier plate and the bottom locular wall, the barrier plate of connection at the bottom locular wall extends towards the top locular wall and should set up the gas passageway between barrier plate and the top loc.
5. The crankcase oil and gas handling mechanism according to any one of claims 1-3, wherein: and sealing gaskets are respectively arranged between the inlet section and the pressure regulating plate and between the pressure regulating plate and the discharge section.
6. An engine, characterized in that: the engine is provided with a crankcase oil and gas treatment mechanism as claimed in any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461998.6U CN211975107U (en) | 2019-12-31 | 2019-12-31 | Crankcase oil gas treatment mechanism and engine provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461998.6U CN211975107U (en) | 2019-12-31 | 2019-12-31 | Crankcase oil gas treatment mechanism and engine provided with same |
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| Publication Number | Publication Date |
|---|---|
| CN211975107U true CN211975107U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922461998.6U Active CN211975107U (en) | 2019-12-31 | 2019-12-31 | Crankcase oil gas treatment mechanism and engine provided with same |
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| CN (1) | CN211975107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022149A (en) * | 2019-12-31 | 2020-04-17 | 潍柴动力扬州柴油机有限责任公司 | Crankcase oil gas treatment mechanism and engine provided with same |
| CN112847187A (en) * | 2020-12-31 | 2021-05-28 | 宁波裕隆汽车制泵有限公司 | Engine cylinder head cover and processing and positioning device thereof |
-
2019
- 2019-12-31 CN CN201922461998.6U patent/CN211975107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022149A (en) * | 2019-12-31 | 2020-04-17 | 潍柴动力扬州柴油机有限责任公司 | Crankcase oil gas treatment mechanism and engine provided with same |
| CN111022149B (en) * | 2019-12-31 | 2024-06-25 | 潍柴动力扬州柴油机有限责任公司 | Crankcase oil gas treatment mechanism and engine provided with same |
| CN112847187A (en) * | 2020-12-31 | 2021-05-28 | 宁波裕隆汽车制泵有限公司 | Engine cylinder head cover and processing and positioning device thereof |
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