CN109578092B - Exhaust gas turbocharger lubricating structure - Google Patents
Exhaust gas turbocharger lubricating structure Download PDFInfo
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- CN109578092B CN109578092B CN201811389496.0A CN201811389496A CN109578092B CN 109578092 B CN109578092 B CN 109578092B CN 201811389496 A CN201811389496 A CN 201811389496A CN 109578092 B CN109578092 B CN 109578092B
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- pressure chamber
- exhaust gas
- lubricating
- transmission shaft
- exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
Abstract
A lubricating structure of an exhaust gas turbocharger comprises a transmission switching mechanism, a vacuum gas storage system and a lubricating oil way. The transmission switching mechanism can switch the working cycle of the traditional exhaust gas turbocharger and the vacuum air storage system can provide power to supply power for the lubricating structure when the turbocharger starts and stops working. The invention has the technical effects that: the shortcoming of insufficient lubrication when a traditional exhaust gas turbocharging engine starts or shuts down is eliminated, the exhaust gas turbocharger can be sufficiently lubricated when starting, the temperature of lubricating oil is prevented from being too high when shutting down, and compared with other exhaust gas turbocharging lubricating structures, the exhaust gas turbocharging lubricating structure has the advantages of no energy consumption, small size and supplement with the turbocharger. The invention is a supplement of the prior booster auxiliary lubrication means.
Description
Technical Field
The invention relates to a supercharger lubricating structure, in particular to an exhaust gas turbocharger lubricating structure.
Background
The energy of the high-temperature and high-pressure exhaust gas of the engine is discharged to the atmosphere from the exhaust manifold, and the energy is wasted. The advent of exhaust gas turbochargers has enabled this portion of the energy to be reused. When the engine works, the exhausted waste gas impacts the turbine wheel at a certain angle at a high speed, so that the supercharger rotor rotates at a high speed. The high-speed rotation of the compressor impeller enables the air pressure in the engine air inlet manifold to be increased, and therefore the supercharging effect is achieved. During intake, the air is subjected to greater pressure, thereby allowing more, denser air to enter the cylinder.
While the exhaust turbocharging mode brings power benefits to the automobile engine, a number of disadvantages are introduced. In order to ensure the service life of the turbocharger, the type of the exhaust gas turbocharger needs to have more patience and better habit when the vehicle is heated and flameout. After the vehicle is cold started, the vehicle is heated in situ, not only the water temperature reaches a normal value, but also the engine oil reaches the best working condition temperature. Similarly, it is necessary to have more patience before turning off, etc. because the turbocharger temperature is very high in a long-time running vehicle or a high-speed running vehicle, the turbine continues to run for a period of time due to inertia after the vehicle is stopped, and it takes enough time to cool, and if the engine is shut down after the vehicle is stopped, the cooling system and the lubricating oil supply are stopped, which may damage the vehicle bearings.
Disclosure of Invention
In view of the above problems, the present invention provides a lubrication structure of an exhaust gas turbocharger, which includes a transmission switching mechanism, a vacuum gas storage system, and a lubrication oil path; this exhaust gas turbine booster lubricating structure has abandoned the starting of traditional exhaust gas turbine supercharged engine or lubricated insufficient drawback when flame-out, can make exhaust gas turbine booster obtain fully lubricated when starting, and also can fully lubricate after flame-out, compares with other exhaust gas turbine booster lubricating structure, has no energy consumption, and is small, with the advantage that exhaust gas turbine booster complements each other.
A lubricating structure of an exhaust gas turbocharger comprises a transmission switching mechanism, a vacuum gas storage system and a lubricating oil way.
The transmission switching mechanism comprises an automobile air inlet and outlet system, a main transmission shaft, a first transmission shaft, a second transmission shaft and a transmission switching shifting fork; the automobile air intake and exhaust system is the same as that of a traditional automobile and mainly comprises an air filter, an air intake compressor, an air intake manifold, an air intake valve, an exhaust manifold, an exhaust gas turbine and the like; the automobile air intake and exhaust system maintains the whole air intake and exhaust working cycle of the exhaust gas turbocharging engine; one end of the main transmission shaft is connected with an exhaust turbine and can rotate at a high speed under the drive of the exhaust turbine, and the other end of the main transmission shaft is provided with a movable gear pair which can move correspondingly according to working conditions; one end of the first transmission shaft is provided with a joint of an air inlet gear pair, and the other end of the first transmission shaft is connected with the air inlet compressor so as to provide the power of the main transmission shaft to the air inlet compressor under a reasonable working condition, thereby realizing the working cycle of the traditional exhaust gas turbocharger; one end of the second transmission shaft is provided with a port of the air storage gear pair, and the other end of the second transmission shaft is connected with the vacuum air storage system, so that power is supplied to the lubricating structure when starting and extinguishing.
The vacuum gas storage system comprises a vacuum valve, a waste gas vacuum pump, a high-pressure chamber and a negative pressure chamber; the vacuum valve is used for interrupting communication between the negative pressure chamber and the outside when the waste gas vacuum pump vacuumizes the negative pressure chamber, the waste gas vacuum pump is a core component of the waste gas vacuum pump, the waste gas vacuum pump can be used as secondary power to drive blades of the air inlet compressor to rotate in an accelerated mode and can also be used as power of the waste gas vacuum pump to vacuumize the negative pressure chamber when high-pressure high-speed waste gas of the exhaust manifold is exhausted, and the waste gas vacuum pump pumps fluid in the negative pressure chamber into the high pressure chamber so that pressure difference is formed between the high pressure chamber and the negative pressure chamber.
The lubricating oil path mainly comprises an oil tank and a lubricating load and is part of a lubricating system of an exhaust gas turbocharger system in an automobile engine.
The invention has the technical effects that: the shortcoming of insufficient lubrication when a traditional exhaust gas turbocharging engine starts or shuts down is eliminated, the exhaust gas turbocharger can be sufficiently lubricated when starting, the temperature of lubricating oil is prevented from being too high when shutting down, and compared with other exhaust gas turbocharging lubricating structures, the exhaust gas turbocharging lubricating structure has the advantages of no energy consumption, small size and supplement with the turbocharger. The invention is a supplement of the prior booster auxiliary lubrication means.
Drawings
FIG. 1 is a schematic view of an exhaust gas turbocharger lubrication structure installation location;
FIG. 2 is a drive schematic of an exhaust gas turbocharger lubrication arrangement;
FIG. 3 is a schematic diagram of the operation of the vacuum air storage system of the exhaust gas turbocharger lubricating structure;
Detailed Description
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent, and are not construed as limiting the present patent.
As shown in FIG. 1, the exhaust gas turbocharger air inlet impeller is connected with the blades of the exhaust gas turbine through a main transmission shaft 5, the invention is positioned in the middle of the main transmission shaft 5, and the rigid connection of the main transmission shaft 5 is divided into two sets of devices which can be selected; under normal working conditions, the exhaust gas turbocharged engine has the effect of supercharging and improves the air intake efficiency; the automobile does not need strong power performance for a few minutes before the automobile is braked, once a pre-braking command is sent, a blade main transmission shaft of an exhaust turbine of the exhaust turbocharging engine is disengaged from the transmission of an air inlet impeller, a supercharger does not act any more, and an exhaust turbocharger lubricating structure is replaced.
As shown in fig. 2, the lubrication structure of the exhaust gas turbocharger can operate under normal working conditions due to different working conditions, and can be selectively operated under lubrication working conditions under appropriate working conditions;
and (3) normal working state: when the automobile runs normally, the transmission switching fork 2 does not work, the main transmission shaft 5 and the first transmission shaft 7 are connected with the inlet gear pair 4 through the movable gear pair 3, and the exhaust gas discharged by the exhaust manifold drives the turbine of the exhaust gas turbocharger to rotate at a high speed, so that power is provided for the compressor, and the effect of the traditional exhaust gas turbocharger is realized; in most cases, the engine and its supercharging device act in this condition.
And (3) lubrication state: before the automobile brakes, the driver opens the pre-actuating button, the action of the shifting fork 2 is switched in the transmission, the main transmission shaft 5 and the second transmission shaft 6 are connected through the interfaces of the movable gear pair 3 and the gas storage gear pair 1, the waste gas turbocharging performance is closed, the vacuum gas storage system is opened, and through the pressure difference between the high pressure chamber and the low pressure chamber, the lubricating oil can still continuously flow after flameout.
As shown in fig. 3: the lubrication mode of the normal working state is that the lubricating oil reaches the lubricating load from the oil tank through the lubricating oil pump, circulates at the lubricating load and returns to the oil tank again. When a pre-actuating command is issued, the first vacuum valve is closed, the first negative pressure chamber forms a closed space, the waste gas turbine drives the main transmission shaft 5 to act, the second transmission shaft 6 drives the waste gas vacuum pump to act, lubricating oil is pumped from the first negative pressure chamber to the first high pressure chamber, and the lubricating oil in the first negative pressure chamber is used up to form high vacuum; meanwhile, on the other side of the lubricating loop, the second vacuum valve is closed, a closed space is formed in the second negative pressure chamber, the exhaust turbine drives the main transmission shaft 5 to act, the second transmission shaft 6 drives the exhaust vacuum pump to act, lubricating oil is pumped from the second negative pressure chamber to the second high pressure chamber, the lubricating oil in the second negative pressure chamber is used up, and high vacuum is formed similarly; after flameout, the direct oil path from the oil tank to the lubricating load has no direct electric power as a power device, at the moment, the first vacuum valve and the second vacuum valve are opened simultaneously, the oil flows from the high-pressure area to the negative-pressure area, the flow of the lubricating oil is continuously realized under the action of pressure difference, and the lubricating load is lubricated until the pressures of the negative-pressure chamber and the high-pressure chamber are balanced. In order to better serve two working conditions that the waste gas turbocharged engine is difficult to start in flameout lubrication, the first high-pressure chamber, the second high-pressure chamber, the first negative pressure chamber and the second negative pressure chamber are respectively divided into two storage chambers, and lubrication deficiency during flameout and later starting is relieved respectively through corresponding time sequence control; and each air chamber has a slow release function, so that the lubricating liquid can fully flow at a constant speed.
Claims (5)
1. A lubricating structure of an exhaust gas turbocharger is characterized by comprising a transmission switching mechanism, a vacuum gas storage system and a lubricating oil way;
the transmission switching mechanism comprises an automobile air inlet and outlet system, a main transmission shaft, a first transmission shaft, a second transmission shaft and a transmission switching shifting fork;
the automobile air intake and exhaust system comprises an air filter, an air intake compressor, an air intake manifold, an air intake valve, an exhaust manifold and an exhaust turbine;
the automobile air intake and exhaust system is used for maintaining the whole air intake and exhaust working cycle of the exhaust gas turbocharging engine;
one end of the main transmission shaft is connected with an exhaust turbine and is used for rotating at a high speed under the driving of the exhaust turbine, and the other end of the main transmission shaft is provided with a movable gear pair which is used for moving correspondingly according to working conditions;
one end of the first transmission shaft is provided with a joint of an air inlet gear pair, and the other end of the first transmission shaft is connected with the air inlet compressor;
one end of the second transmission shaft is provided with a connector of the air storage gear pair, and the other end of the second transmission shaft is connected with the vacuum air storage system and provides power for the lubricating structure during starting and flameout;
the vacuum gas storage system comprises a vacuum valve, a waste gas vacuum pump, a high-pressure chamber and a negative pressure chamber; the vacuum valve is used for interrupting the communication between the negative pressure chamber and the outside when the waste gas vacuum pump vacuumizes the negative pressure chamber; the lubricating oil path mainly comprises an oil tank and a lubricating load, and is a part of a lubricating system of an exhaust gas turbocharger system in an automobile engine.
2. The lubrication structure of an exhaust gas turbocharger according to claim 1, wherein the power provided by the exhaust gas turbine can be switched between a normal working state and a lubrication state, so that turbocharging during normal driving and auxiliary lubrication during shutdown or starting are realized.
3. The lubrication structure of an exhaust gas turbocharger according to claim 1, wherein when a pre-actuation command is issued, the first vacuum valve is closed to form a closed space in the first negative pressure chamber, the exhaust gas turbine drives the main transmission shaft to act, the second transmission shaft drives the exhaust gas vacuum pump to act, lubricating oil is pumped from the first negative pressure chamber to the first high pressure chamber, and the lubricating oil in the first negative pressure chamber is used up to form a high vacuum; meanwhile, on the other side of the lubricating loop, the second vacuum valve is closed, a closed space is formed in the second negative pressure chamber, the exhaust turbine drives the main transmission shaft to act, the second transmission shaft drives the exhaust vacuum pump to act, lubricating oil is pumped from the second negative pressure chamber to the second high pressure chamber, the lubricating oil in the second negative pressure chamber is used up, and high vacuum is formed similarly; after flameout, the direct oil path from the oil tank to the lubricating load has no direct electric power as a power device, at the moment, the first vacuum valve and the second vacuum valve are opened simultaneously, the oil flows from the high-pressure area to the negative-pressure area, the flow of the lubricating oil is continuously realized under the action of pressure difference, and the lubricating load is lubricated until the pressures of the negative-pressure chamber and the high-pressure chamber are balanced.
4. The lubrication structure of an exhaust gas turbocharger according to claim 1, wherein the first high-pressure chamber, the second high-pressure chamber, the first negative pressure chamber and the second negative pressure chamber are each divided into two storage chambers, respectively, for alleviating insufficient lubrication at key-off and at the time of starting after key-off, respectively, by corresponding timing control.
5. The exhaust gas turbocharger lubricating structure according to claim 1, wherein each air chamber has a slow release function, so that lubricating liquid can flow sufficiently at a constant speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389496.0A CN109578092B (en) | 2018-11-21 | 2018-11-21 | Exhaust gas turbocharger lubricating structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811389496.0A CN109578092B (en) | 2018-11-21 | 2018-11-21 | Exhaust gas turbocharger lubricating structure |
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| CN109578092A CN109578092A (en) | 2019-04-05 |
| CN109578092B true CN109578092B (en) | 2021-03-09 |
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| CN113464270B (en) * | 2021-06-09 | 2022-09-09 | 东风汽车集团股份有限公司 | Supercharger, lubricating system and lubricating method |
Citations (10)
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| US4926641A (en) * | 1989-01-11 | 1990-05-22 | Keller Robert A | Turbocharger lubrication system |
| KR20040031264A (en) * | 2002-10-04 | 2004-04-13 | 현대자동차주식회사 | Induction and exhaust system of diesel engine |
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| CN106437995A (en) * | 2016-10-26 | 2017-02-22 | 奇瑞汽车股份有限公司 | Automobile supercharged engine cooling system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10082070B2 (en) * | 2010-12-08 | 2018-09-25 | Hydracharge Llc | High performance turbo-hydraulic compressor |
| JP2015038331A (en) * | 2013-08-19 | 2015-02-26 | 大豊工業株式会社 | Lubrication oil supply system of turbocharger |
| CN205172724U (en) * | 2015-12-01 | 2016-04-20 | 中国人民解放军军事交通学院 | Turbo charger compensates lubricating arrangement |
| CN207178030U (en) * | 2017-06-23 | 2018-04-03 | 黄石炫轺者动力科技有限公司 | A kind of lost pressure cooling system and the centrifugal supercharger with the cooling system |
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2018
- 2018-11-21 CN CN201811389496.0A patent/CN109578092B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4926641A (en) * | 1989-01-11 | 1990-05-22 | Keller Robert A | Turbocharger lubrication system |
| KR20040031264A (en) * | 2002-10-04 | 2004-04-13 | 현대자동차주식회사 | Induction and exhaust system of diesel engine |
| CN1734066A (en) * | 2004-07-29 | 2006-02-15 | 福特环球技术公司 | Internal combustion engine and lubrication system thereof |
| CN101839156A (en) * | 2010-02-24 | 2010-09-22 | 莫嘉林 | Oil supply system of exhaust gas turbocharger |
| JP2012057544A (en) * | 2010-09-09 | 2012-03-22 | Jtekt Corp | Turbocharger with lubricating oil supply device |
| CN103459801A (en) * | 2011-04-13 | 2013-12-18 | 博格华纳公司 | Exhaust-gas turbocharger |
| CN104454250A (en) * | 2013-09-20 | 2015-03-25 | 爱三工业株式会社 | Low-pressure-loop exhaust recirculation apparatus of engine and control device of engine with supercharger |
| CN204677288U (en) * | 2015-05-28 | 2015-09-30 | 李卫彬 | Lubricating fitting is shut down in turbosupercharging |
| CN106437995A (en) * | 2016-10-26 | 2017-02-22 | 奇瑞汽车股份有限公司 | Automobile supercharged engine cooling system and control method thereof |
| CN206722892U (en) * | 2017-03-22 | 2017-12-08 | 广州工程技术职业学院 | Pre-lubrication engine |
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| CN109578092A (en) | 2019-04-05 |
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