CN205154302U - A oil -gas separation assembly for supercharged engine - Google Patents
A oil -gas separation assembly for supercharged engine Download PDFInfo
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- CN205154302U CN205154302U CN201520970264.XU CN201520970264U CN205154302U CN 205154302 U CN205154302 U CN 205154302U CN 201520970264 U CN201520970264 U CN 201520970264U CN 205154302 U CN205154302 U CN 205154302U
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- oil
- deaerator
- exhaust side
- gas
- air inlet
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Abstract
The utility model discloses an oil -gas separation assembly for supercharged engine, including the engine cylinder housing, respectively correspond set up in in the valve mechanism cover exhaust side with the side of admitting air in exhaust side oil and gas separator and the side oil and gas separator that admits air, the cylinder body oil and gas separator who sets up in engine crankcase outside and communicate with the crankcase, cylinder body oil and gas separator is through pressure boost ventilation pipe and exhaust side oil and gas separator intercommunication, the crankcase is through non - pressure boost ventilation pipe and valve mechanism cover exhaust side intercommunication, exhaust side oil and gas separator communicates in engine intake manifold through first two -way ventilation pipe, the side of admitting air oil and gas separator pass through the two -way ventilation pipe of second and feed through in engine air intake manifold, and this system can adapt to engine pressure boost mode NOT AND pressure boost mode, guarantees can be thoroughly to carry out oil -gas separation to the oil gas of crankcase.
Description
Technical field
The utility model belongs to engine component field, is specifically related to a kind of Oil-gas Separation assembly for supercharged engine.
Background technique
Motor car engine has inflammable mixture in operation process and waste gas enters crankcase, and be dissolved in machine oil, make oil dilution, degradation, the pollutants such as the particle contained in waste gas mix with machine oil, and machine oil is gone bad, corrosion component; Engine running produces heat simultaneously, and machine oil volatilizees, and crankcase internal pressure increases, and machine oil can ooze out loss from crankcase oil seal etc., and machine oil loss can cause oil consumption excessive, and the steam that machine oil volatilization produces also can pollute air.Therefore, motor all adopts crankcase ventilation system to remove crankcase gas blowby, prevent machine oil from going bad, gradually lack consumption of lubricating oil, to reduce discharge etc.
Existing deaerator is arranged in engine air cylinder cap usually, and connect crankcase for receiving from the oil gas in bent axle by ventilation duct, flowed into downwards in cylinder head by the isolated machine oil of deaerator, divide the gas flow intake manifold listed also finally to enter in cylinder body to burn, the oil and gas separating system of this structural type is only only applicable to naturally aspirated engine, for turbosupercharged engine, because the pressure in intake manifold is comparatively large, the isolated gas of deaerator cannot be pressed in intake manifold.
Therefore, for overcoming the above problems, need a kind of Oil-gas Separation assembly for supercharged engine being applicable to turbosupercharged engine, this oil and gas separating system can adapt to engine booster pattern and non pressurized pattern, the flow direction of automatic adjustment oil gas, ensures that the Oil-gas Separation assembly being used for supercharged engine all can normally work under supercharging and non pressurized pattern.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of Oil-gas Separation assembly for supercharged engine being applicable to turbosupercharged engine, this oil and gas separating system can adapt to engine booster pattern and non pressurized pattern, the flow direction of automatic adjustment oil gas, ensures that the Oil-gas Separation assembly being used for supercharged engine all can normally work under supercharging and non pressurized pattern;
Oil-gas Separation assembly for supercharged engine of the present utility model comprises engine air cylinder cap, to be correspondingly respectively arranged in described valve mechanism cover exhaust side with the exhaust side deaerator in air inlet side and air inlet side deaerator, to be arranged at the outer and cylinder body deaerator be communicated with crankcase of engine crankcase; Described cylinder body deaerator is communicated with exhaust side deaerator by pressurizating ventilation pipe, described crankcase is communicated with valve mechanism cover exhaust side by non pressurized ventilation duct, described exhaust side deaerator is communicated in engine air inlet tube by the first two-way airduct, and described air inlet side deaerator is communicated in engine intake manifold by the second two-way airduct;
Further, the two-way Pcv valve for controlling the gas flow by this pipeline is provided with in described second two-way airduct;
Further, described Pcv valve comprises valve seat, the joint coordinated with described valve base sealing and the spool be arranged in valve seat; Be fixed with valve block between described valve seat and joint and valve block is provided with airflow hole for making air-flow pass through, described spool is that diminishing tapered cylinders and spool are upward through airflow hole and move up and down by it flow area controlling airflow hole external diameter from top to bottom;
Further, the described cylinder body deaerator multi-cycle separation chamber that comprises main disengagement chamber and be communicated with main disengagement chamber; Described main disengagement chamber is provided with oil and gas import and oil gas vent and main disengagement chamber inwall is irregular inwall for guiding oil gas circuitous flow, and described multi-cycle separation cavity wall inwardly protruding makes to form circulatory flow between projection and multi-cycle separation chamber sidewall;
Further, be provided with the first spring for hindering spool to move up between described spool and joint top inner wall, described spool sidewall is provided with and is provided with the second spring between its integrated limited ring its this limited ring and valve block;
Further, described valve mechanism cover comprises air inlet side cover body, exhaust side cover body and connects the joint of described air inlet side cover body and exhaust side cover body; Described air inlet side deaerator and exhaust side deaerator are maze-type structure and are installed in air inlet side cover body and exhaust side cover body respectively;
Further, described first two-way airduct the inner is connected to exhaust side deaerator, and the first two-way airduct outer end is connected to the pipeline that engine air inlet tube is positioned at pressurized machine upstream;
Further, described second two-way airduct the inner is connected to air inlet side deaerator, and the second two-way airduct outer end is connected in engine intake manifold the pipeline being positioned at charge air cooler downstream;
Further, be provided with in described exhaust side deaerator for stoping gas stream from cylinder body deaerator to the safety check of described non pressurized ventilation duct;
Further, described exhaust side deaerator is hole wall formula deaerator, and is provided with bottom it for guiding isolated machine oil to flow to spill port in cylinder head.
The beneficial effects of the utility model are: the Oil-gas Separation assembly for supercharged engine of the present utility model, when motor is in non pressurized pattern, oil gas in crankcase enters into valve mechanism cover exhaust side by non pressurized ventilation duct, then flow to air inlet side deaerator to air inlet side and carry out Oil-gas Separation, the gas be separated enters in engine intake manifold by the second two-way airduct, burn in final introducing firing chamber, when crankcase internal air pressure is lower, gas in engine air inlet tube enters in exhaust side deaerator by the first two-way airduct, and flow in crankcase through non pressurized ventilation duct, when motor is in boost mode, oil gas in crankcase enters in cylinder body deaerator and carries out initial gross separation, isolated gas enters exhaust side deaerator by pressurizating ventilation pipe and carries out secondary separation, isolated gas enters in engine air inlet tube by the first two-way airduct, and in the final inflow engine firing chamber of pressurized machine, when crankcase internal air pressure is too low, gas in intake manifold enters in air inlet side deaerator by the second two-way airduct, and flow to valve mechanism cover exhaust side, enter in crankcase by non pressurized ventilation duct, realize to crankcase ftercompction.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the operating diagram of the utility model under boost mode;
Fig. 2 is the operating diagram of the utility model under non pressurized pattern;
Fig. 3 is the structural representation of valve mechanism cover of the present utility model;
Fig. 4 is the structural representation of cylinder body deaerator of the present utility model;
Fig. 5 is the structural representation of Pcv valve of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure, the Oil-gas Separation assembly for supercharged engine in the present embodiment, comprises engine air cylinder cap, to be correspondingly respectively arranged in described valve mechanism cover exhaust side with the exhaust side deaerator 5 in air inlet side and air inlet side deaerator 4, to be arranged at the outer and cylinder body deaerator 9 be communicated with crankcase 1 of engine crankcase 1, described cylinder body deaerator 9 is communicated with exhaust side deaerator 5 by pressurizating ventilation pipe 10, described crankcase 1 is communicated with valve mechanism cover exhaust side by non pressurized ventilation duct 8, described exhaust side deaerator 5 is communicated in engine air inlet tube 6 by the first two-way airduct 7, and described air inlet side deaerator 4 is communicated in engine intake manifold by the second two-way airduct 2, when motor is in non pressurized pattern, oil gas in crankcase 1 enters into valve mechanism cover exhaust side by non pressurized ventilation duct 8, then flow to air inlet side deaerator 4 to air inlet side and carry out Oil-gas Separation, the gas be separated enters in engine intake manifold by the second two-way airduct 2, burn in final introducing firing chamber, when crankcase 1 internal air pressure is lower, gas in engine air inlet tube 6 is entered in exhaust side deaerator 5 by the first two-way airduct 7, and flows in crankcase 1 through non pressurized ventilation duct 8, when motor is in boost mode, oil gas in crankcase 1 enters in cylinder body deaerator 9 and carries out initial gross separation, isolated gas enters exhaust side deaerator 5 by pressurizating ventilation pipe 10 and carries out secondary separation, isolated gas enters in engine air inlet tube 6 by the first two-way airduct 7, and in the final inflow engine firing chamber of pressurized machine 11, when crankcase 1 internal air pressure is too low, gas in intake manifold enters in air inlet side deaerator 4 by the second two-way airduct 2, and flow to valve mechanism cover exhaust side, enter in crankcase 1 by non pressurized ventilation duct 8, realize to crankcase 1 ftercompction.
In the present embodiment, the two-way Pcv valve 3 for controlling the gas flow by this pipeline is provided with in described second two-way airduct 2, this two-way Pcv valve 3 is in normally open, and air-flow can two-way flow, and when air-flow velocity (no matter from the top down or from bottom to top) is too high, all throttling action can be played, due under boost mode, the air pressure of engine intake manifold is larger, for avoiding too much gas by the second ventilation duct to crankcase 1 tonifying Qi, therefore, when air-flow flows from intake manifold to air inlet side deaerator 4, two-way Pcv valve 3 aperture reduces, avoid under boost mode to crankcase 1 excessively tonifying Qi, under non pressurized pattern, needed to flow to intake manifold through the second two-way airduct 2 by the isolated gas of air inlet side deaerator 4, now, for avoiding air flow rate excessive, two-way Pcv valve 3 aperture reduces.
The joint 19 that in the present embodiment, described Pcv valve 3 comprises valve seat 24, be sealed and matched with described valve seat 24 and the spool 23 be arranged in valve seat 24; Be fixed with valve block 21 between described valve seat 24 and joint 19 and valve block 21 is provided with airflow hole for making air-flow pass through, described spool 23 is that diminishing tapered cylinders and spool 23 are upward through airflow hole and move up and down by it flow area controlling airflow hole external diameter from top to bottom; Spool 23 will contact with bottom valve seat 24 under gravity, now, the aperture of Pcv valve 3 is maximum, when air-flow upwards flows bottom valve seat 24, spool 23 will move up under the promotion of air-flow, the flow area of the airflow hole on valve block 21 will reduce gradually, thus the flow that control air-flow flows from the bottom up, when air-flow flows downward above valve seat 24, because spool 23 is that the lightweight materials such as plastics make, air-flow changes the flow direction and by spool 23 upwardly, finally realizes throttling action in valve seat 24.
In the present embodiment, the multi-cycle separation chamber 15 that described cylinder body deaerator 9 comprises main disengagement chamber 17 and is communicated with main disengagement chamber 17; Described main disengagement chamber 17 is provided with oil and gas import and oil gas vent and main disengagement chamber 17 inwall is irregular inwall for guiding oil gas circuitous flow, and described multi-cycle separation chamber 15 inwall inwardly protruding makes to form circulatory flow between projection and multi-cycle separation chamber 15 sidewall; Motor is under boost mode, oil gas in crankcase 1 enters in main disengagement chamber 17 by oil and gas import, and under the guiding of the irregular inwall of main disengagement chamber 17, carry out flowing realize Oil-gas Separation, part oil gas to enter in multi-cycle separation chamber 15 and at circulatory flow internal circulation flow, in flow process, part machine oil is separated and is back in crankcase 1 by oil and gas import, and the gas that initial gross separation goes out is entered in pressurizating ventilation pipe 10 by oil gas vent.
In the present embodiment, be provided with the first spring 20 for hindering spool 23 to move up between described spool 23 and joint 19 top inner wall, described spool 23 sidewall is provided with and is provided with the second spring 22 between its integrated limited ring its this limited ring and valve block 21; First spring 20 and the second spring 22, all for hindering spool 23 to move up, because spool 23 is that the lightweight materials such as plastics make, therefore, utilize the first spring 20 and the second spring 22 that it can be avoided to close the airflow hole of valve block 21 completely.
In the present embodiment, described valve mechanism cover comprises air inlet side cover body 12, exhaust side cover body 14 and connects the joint 13 of described air inlet side cover body 12 and exhaust side cover body 14; Described air inlet side deaerator 4 and exhaust side deaerator 5 are maze-type structure and are installed in air inlet side cover body 12 and exhaust side cover body 14 respectively, when oil gas flows between air inlet side cover body 12 and exhaust side cover body 14, in the process through joint 13, the flow direction of oil gas will repeatedly change, make oil gas carry out Mazeflo, be conducive to making Oil-gas Separation more thorough.
In the present embodiment, described first two-way airduct 7 the inner is connected to exhaust side deaerator 5, first two-way airduct 7 outer end is connected to the pipeline that engine air inlet tube 6 is positioned at pressurized machine 11 upstream, because motor is under pressurized state, the pressure that engine air inlet tube 6 is arranged in the pipeline of pressurized machine 11 upstream is relatively little, ensure that the gas that the separation in cylinder head cover completes can enter suction tude 6 smoothly, finally guide in cylinder body and participate in burning.
In the present embodiment, described second two-way airduct 2 the inner is connected to air inlet side deaerator 4, second two-way airduct 2 outer end and is connected in engine intake manifold the pipeline being positioned at charge air cooler downstream; Motor is under pressurized state, the pipeline pressure being arranged in charge air cooler downstream in engine intake manifold is higher, by non pressurized ventilation duct 8 to crankcase 1 tonifying Qi, can will ensure that crankcase 1 internal pressure balances in a part of gas press-in valve mechanism cover by this pressure.
In the present embodiment, be provided with for stoping gas stream from cylinder body deaerator 9 to the safety check of described non pressurized ventilation duct 8 in described exhaust side deaerator 5; Ensure can enter suction tude 6 completely through the isolated gas of exhaust side deaerator 5, final introducing in engine cylinder-body participates in burning.
In the present embodiment, described exhaust side deaerator 5 is hole wall formula deaerator, and be provided with for guiding isolated machine oil to flow to spill port in cylinder head bottom it, hole wall formula deaerator comprises the multiple and sorting hole of column distribution, be interconnected by runner between each sorting hole, oil gas will pass through the inwall of each sorting hole successively through hole wall formula deaerator, and helical flow is carried out under the guiding of this inwall, hole wall formula deaerator can increase substantially the circulation path length of oil gas, makes Oil-gas Separation more thorough.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (10)
1. for an Oil-gas Separation assembly for supercharged engine, it is characterized in that: comprise engine air cylinder cap, to be correspondingly respectively arranged in described valve mechanism cover exhaust side with the exhaust side deaerator in air inlet side and air inlet side deaerator, to be arranged at the outer and cylinder body deaerator be communicated with crankcase of engine crankcase; Described cylinder body deaerator is communicated with exhaust side deaerator by pressurizating ventilation pipe, described crankcase is communicated with valve mechanism cover exhaust side by non pressurized ventilation duct, described exhaust side deaerator is communicated in engine air inlet tube by the first two-way airduct, and described air inlet side deaerator is communicated in engine intake manifold by the second two-way airduct.
2. the Oil-gas Separation assembly for supercharged engine according to claim 1, is characterized in that: be provided with the two-way Pcv valve for controlling the gas flow by this pipeline in described second two-way airduct.
3. the Oil-gas Separation assembly for supercharged engine according to claim 2, is characterized in that: described Pcv valve comprises valve seat, the joint coordinated with described valve base sealing and the spool be arranged in valve seat; Be fixed with valve block between described valve seat and joint and valve block is provided with airflow hole for making air-flow pass through, described spool is that diminishing tapered cylinders and spool are upward through airflow hole and move up and down by it flow area controlling airflow hole external diameter from top to bottom.
4. the Oil-gas Separation assembly for supercharged engine according to claim 3, is characterized in that: the multi-cycle separation chamber that described cylinder body deaerator comprises main disengagement chamber and is communicated with main disengagement chamber; Described main disengagement chamber is provided with oil and gas import and oil gas vent and main disengagement chamber inwall is irregular inwall for guiding oil gas circuitous flow, and described multi-cycle separation cavity wall inwardly protruding also makes to form circulatory flow between projection and multi-cycle separation cavity wall.
5. the Oil-gas Separation assembly for supercharged engine according to claim 4, it is characterized in that: be provided with the first spring for hindering spool to move up between described spool and joint top inner wall, described spool sidewall is provided with and is provided with the second spring between its integrated limited ring its this limited ring and valve block.
6. the Oil-gas Separation assembly for supercharged engine according to claim 5, is characterized in that: described valve mechanism cover comprises air inlet side cover body, exhaust side cover body and connects the joint of described air inlet side cover body and exhaust side cover body; Described air inlet side deaerator and exhaust side deaerator are maze-type structure and are installed on respectively in air inlet side cover body and exhaust side cover body.
7. the Oil-gas Separation assembly for supercharged engine according to claim 6, it is characterized in that: described first two-way airduct the inner is connected to exhaust side deaerator, and the first two-way airduct outer end is connected in engine air inlet tube the pipeline being positioned at pressurized machine upstream.
8. the Oil-gas Separation assembly for supercharged engine according to claim 7, it is characterized in that: described second two-way airduct the inner is connected to air inlet side deaerator, and the second two-way airduct outer end is connected in engine intake manifold the pipeline being positioned at charge air cooler downstream.
9. the Oil-gas Separation assembly for supercharged engine according to claim 8, is characterized in that: be provided with in described exhaust side deaerator for stoping gas stream from cylinder body deaerator to the safety check of described non pressurized ventilation duct.
10. the Oil-gas Separation assembly for supercharged engine according to claim 9, is characterized in that: described exhaust side deaerator is hole wall formula deaerator, and is provided with bottom it for guiding isolated machine oil to flow to spill port in cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970264.XU CN205154302U (en) | 2015-11-30 | 2015-11-30 | A oil -gas separation assembly for supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970264.XU CN205154302U (en) | 2015-11-30 | 2015-11-30 | A oil -gas separation assembly for supercharged engine |
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| Publication Number | Publication Date |
|---|---|
| CN205154302U true CN205154302U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520970264.XU Active CN205154302U (en) | 2015-11-30 | 2015-11-30 | A oil -gas separation assembly for supercharged engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257367A (en) * | 2015-11-30 | 2016-01-20 | 重庆小康工业集团股份有限公司 | Oil-gas separation system for supercharged engine |
| CN115750035A (en) * | 2022-11-30 | 2023-03-07 | 东风商用车有限公司 | Engine crankcase ventilation system and method |
-
2015
- 2015-11-30 CN CN201520970264.XU patent/CN205154302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257367A (en) * | 2015-11-30 | 2016-01-20 | 重庆小康工业集团股份有限公司 | Oil-gas separation system for supercharged engine |
| CN115750035A (en) * | 2022-11-30 | 2023-03-07 | 东风商用车有限公司 | Engine crankcase ventilation system and method |
| CN115750035B (en) * | 2022-11-30 | 2024-08-13 | 东风商用车有限公司 | Engine crankcase ventilation system and method |
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