CN103184928B - Fuel cut-off protection device for turbocharger - Google Patents
Fuel cut-off protection device for turbocharger Download PDFInfo
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- CN103184928B CN103184928B CN201110450859.9A CN201110450859A CN103184928B CN 103184928 B CN103184928 B CN 103184928B CN 201110450859 A CN201110450859 A CN 201110450859A CN 103184928 B CN103184928 B CN 103184928B
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- fuel cut
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Abstract
The invention discloses a fuel cut-off protection device for a turbocharger. The fuel cut-off protection device comprises a three-way oil tube, wherein the first branch of the three-way oil tube is connected with the turbocharger; the second branch of the three-way oil tube is connected with a lubricating oil circuit of an engine; the third branch of the three-way oil tube is connected with the fuel cut-off protection device of the turbocharger; a one-way valve which is conducted from the engine to the three-way oil tube along a single direction is arranged in the first branch; and the fuel cut-off protection device is used for storing lubricating oil during normal running of the engine, and inputting the stored lubricating oil into the turbocharger when the engine stops running. The fuel cut-off protection device for the turbocharger can be used for storing lubricating oil during running of the engine, and can be used for inputting the stored lubricating oil into the turbocharger when the engine stops running to cool and lubricate, so that energy can be saved; and the fuel cut-off protection device for the turbocharger is suitable for the situations of frequent start and stop and halt and unexpected halt of the engine.
Description
Technical field
The present invention relates to one and stop oil guard device, particularly a kind of fuel cut-off protection device for turbocharger.
Background technique
Pressurized machine, because it is to the effect improving engine power, reduce fuel consumption rate, improve discharge aspect, has been widely used in motor.Turbosupercharger due to work time pressurized machine be connected with outlet pipe; and turbosupercharger when normal work rotating speed up to tens0000 turns per minute; therefore must ensure that the rotating shaft of pressurized machine and bearing obtain good lubrication; inner for pressurized machine amount of heat is passed through the fluxion strap of lubricant oil from pressurized machine simultaneously, thus play a protective role.
To pressurized machine, traditional lubrication and cooling mode is the certain machine oil and engine oil pressure that are provided by oil pump, lubricates, utilize the flowing of lubricant oil that carry heat is back to oil sump simultaneously, play lubrication and cooling effect the pressurized machine of motor.During usual motor orderly closedown; the mode of 3-5 minute is run by engine idle; the delivery temperature of motor is reduced; the rotating speed of pressurized machine is reduced simultaneously; in idling process; the more heat transfer at booster intermediate body rotating shaft and bearing place is discharged by engine motor oil, is protected pressurized machine by complete machine idling mode.
Traditional pressurized machine lubricating system cannot continue to carry out lubrication protection to it after engine stoping operation.There is following shortcoming:
1, during orderly closedown, cooling of charge device, just need the engine idle sufficiently long time, a lot of energy can be wasted;
If 2 cause motor to be shut down suddenly due to uncertain factor, now cannot continue to provide machine oil to carry out lubrication protection to pressurized machine, the amount of heat being gathered in pressurized machine rotating shaft and bearing place cannot leave in time, and after motor is shut down, due to inertia, the impeller of pressurized machine still can not have to continue under machine oil condition to rotate a period of time, and this just may cause pressurized machine local superheating, burn pressurized machine rotating shaft and bearing, reduce the working life of pressurized machine and even complete machine;
3, on the motor of some usually frequent start-stops, as diesel oil and electric hybrid motor, do not have time enough to go idling to dispel the heat, idling mode cannot meet requirement pressurized machine being carried out to available protecting.
Summary of the invention
The present invention is to overcome above-mentioned defect of the prior art; a kind of fuel cut-off protection device for turbocharger is disclosed; this device can store lubricant oil when motor runs; the lubricant oil of storage can be input in turbosupercharger when engine stop and carry out lowering the temperature and lubricating; both can be energy-conservation, be suitable for again the situation of motor frequent start-stop and hang-up.
For achieving the above object, the present invention's openly following technological scheme:
A kind of fuel cut-off protection device for turbocharger, comprise three oil pipes, first branch road of this three oil pipe connects turbosupercharger, the lubricating oil path of the second branch road connecting engine, 3rd branch road connects pressurized machine and stops oil guard device, wherein: be provided with one in described first branch road from motor to the one-way valve of three oil pipe one-way conductions; The described oil guard device that stops stores lubricant oil when motor normally runs, and is input in pressurized machine by stored lubricant oil when engine stop.
Further; the described oil guard device that stops is a piston/cylinder; one end of this piston/cylinder is communicated with described 3rd branch road, the other end external compressed air source, and pipeline between this piston/cylinder and source of compressed air is also provided with the solenoid valve of a pilot line break-make.
Further, the pipeline between described solenoid valve and source of compressed air is also provided with an air transformer for pressure regulation, the gas flow rate specification of this air transformer is at least 3000L/min, and the inlet pressure ranges after pressure regulation is at 0 ~ 8bar.
Further, comprise a piston in described piston/cylinder, this piston is provided with at least one seal ring, and this piston is provided with pit in compressed-air actuated one side.
Further, the two ends of described piston/cylinder are equipped with cover plate, and are provided with back-up ring outside described cover plate.
Compared with prior art, the present invention has following beneficial effect:
The lubricating oil path of the one end and motor of 1, stopping oil guard device is connected, like this when motor normally runs, understand some lubricant oil to enter into and stop oil guard device and store, when engine stop runs, this part lubricant oil stored can flow into turbosupercharger from stopping oil guard device, not only run without the need to engine idle, just can play the effect of cooling and lubrication, can the operating mode of motor frequent start-stop and hang-up be met but also realize energy-conservation well;
2, cylinder body one end of piston cylinder is communicated with lubricating oil path, the other end and compressed air communication, and by the compressed-air actuated break-make of electromagnetic valve, so, when motor normally runs, under the control of solenoid valve, pressurized air does not enter in piston cylinder, lubricant oil can enter into piston cylinder under the pressure of self, head on piston to run to pressurized air one end, a part of lubricant oil is made to be stored in piston cylinder, during engine stop, electromagnetic valve pressurized air enters in piston cylinder, the lubricant oil of storage is made to output in turbosupercharger, engine idle is not needed to run,
3, when one-way valve can avoid motor to shut down effectively, lubricant oil is from stopping refluxing oil guard device;
4, the electronic control system ECU of automobile can be utilized to carry out Controlling solenoid valve easily, not only making to stop oil guard device can incorporate in the original ECU of automobile and motor coordinated operation, can also effectively improve the speed of response of stopping oil guard, avoid occurring that shoe cream room is oil-filled and cause the phenomenon that the lubricant oil of pressurized machine is shunted, lubricating oil pressure is inadequate, be particularly applicable to the engine operating condition of frequent start-stop;
5, the air transformer arranged at compressed air inlet place can, effectively to voltage stabilizing in piston cylinder, make piston cylinder lubricant oil when stopping oil guard export stable and continuous;
6, piston being conducive to gas pressure balancing towards the pit set by compressed-air actuated one side acts on piston, avoids piston unbalance stress and causes O shape circle or the one-sided wearing and tearing of piston ring to cause piston to alter wet goods fault;
7, the whole series stop that the structure of oil guard device is simple, cost is low, easy accessibility and reliable operation.
Accompanying drawing explanation
Fig. 1 is the system schematic of fuel cut-off protection device for turbocharger;
Fig. 2 is an embodiment of fuel cut-off protection device for turbocharger;
Fig. 3 is the structural representation of cylinder body in Fig. 2;
Fig. 4 is the assembling schematic diagram of fuel cut-off protection device for turbocharger and motor.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-motor, 2-turbosupercharger, 3-tracheae, 4-solenoid valve, 5-air transformer, 6-stops oil guard cylinder, 7-tri-oil pipe, 8-one-way valve, 9-oil inlet pipe, 61-cylinder body, 62-air cavity, 63-piston, 64-O shape seal ring, 65-shoe cream room, 66-cover plate, 67-back-up ring.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
A kind of fuel cut-off protection device for turbocharger, as shown in Figure 1, comprises three oil pipes 7, and the first branch road of this three oil pipe 7 connects the lubricating oil path of turbosupercharger 2, second branch road connecting engine 1, and the 3rd branch road connects pressurized machine and stops oil guard device.Pressurized machine in the present embodiment stops oil guard device and is one and stops oil guard cylinder 6; it to be linked in sequence a solenoid valve 4 and an air transformer 5 with tracheae 3; the gas flow rate specification of this air transformer 5 is at least 3000L/min, and the inlet pressure ranges after pressure regulation is at 0 ~ 8bar.An one-way valve 8 from motor 1 to three oil pipe 7 one-way conduction is also provided with in described first branch road.
As shown in Figures 2 and 3, stopping oil guard cylinder 6 is cylinder bodies 61 that an inside is provided with piston 63, and the lower end of cylinder body 61 is communicated with described 3rd branch road, and upper end is external compressed air source then, and the space of piston 63 bottom is shoe cream room 65, and the space on top is air cavity 62.Air transformer 5 is for regulating inputted compressed-air actuated pressure, and make it steady, generally its delivery pressure preferred is about 1.6bar.Piston 63 is provided with two O-ring seals 64, and piston 63 is provided with pit in the one side of air cavity 62.The two ends up and down of cylinder body 61 are equipped with cover plate 66, are provided with back-up ring 67 outside cover plate 66, prevent cover plate 66 from coming off.
As shown in Figure 4, one-way valve 8 and motor 1 oil inlet pipe 9 is communicated with, and enables the lubricant oil of motor enter into three oil pipes 7.
During work, in air transformer 5, pass into pressurized air, solenoid valve 4 accesses in the electronic control system ECU of automobile, and motor coordination.When the engine starts, solenoid valve 4 is energized, pressurized air enters in air cavity 62, withstand piston 63 to down to position, do not allow lubricant oil enter shoe cream room 65, but directly flow to turbosupercharger 2 from motor 1, carry out lubrication, its object is to motor 1 when starting, the lubrication of lubricant oil to turbosupercharger 2 will be set up fast, avoid occurring lubricant oil shunting, the phenomenon that lubricating oil pressure is inadequate.Through after a while, motor 1 has operated steadily, solenoid valve 4 power-off, pressurized air is stopped, becomes barometric pressure in air cavity 62, now because the oil pressure in shoe cream room 65 is greater than barometric pressure, piston 63 can be made up, form a certain amount of lubricant oil deposit.When engine stop, solenoid valve 4 is energized, and the promotion of piston 63 air is by compression descending, and lubricant oil is extruded in shoe cream room 65.Due to the effect of one-way valve 8, this part lubricant oil can enter in turbosupercharger 2, realizes lubrication and cooling.
Be only the present invention's preferably specific embodiment above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (3)
1. a fuel cut-off protection device for turbocharger, is characterized in that, comprises three oil pipes, and the first branch road of this three oil pipe connects turbosupercharger, the lubricating oil path of the second branch road connecting engine, and the 3rd branch road connects pressurized machine and stops oil guard device, wherein:
One is provided with from motor to the one-way valve of three oil pipe one-way conductions in described first branch road;
The described oil guard device that stops stores lubricant oil when motor normally runs, and is input in pressurized machine when engine stop by stored lubricant oil;
The described oil guard device that stops is a piston/cylinder, one end of this piston/cylinder is communicated with described 3rd branch road, the other end external compressed air source, and the pipeline between this piston/cylinder and source of compressed air is also provided with the solenoid valve of a pilot line break-make, described solenoid valve is controlled by the electronic control system ECU of automobile;
Pipeline between described solenoid valve and source of compressed air is also provided with an air transformer for pressure regulation, the gas flow rate specification of this air transformer is at least 3000L/min, and the inlet pressure ranges after pressure regulation is at 0 ~ 8bar.
2. fuel cut-off protection device for turbocharger according to claim 1, is characterized in that, comprise a piston in described piston/cylinder, this piston is provided with at least one seal ring, and this piston is provided with pit in compressed-air actuated one side.
3. fuel cut-off protection device for turbocharger according to claim 2, is characterized in that, the two ends of described piston/cylinder are equipped with cover plate, and is provided with back-up ring outside described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450859.9A CN103184928B (en) | 2011-12-29 | 2011-12-29 | Fuel cut-off protection device for turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450859.9A CN103184928B (en) | 2011-12-29 | 2011-12-29 | Fuel cut-off protection device for turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103184928A CN103184928A (en) | 2013-07-03 |
| CN103184928B true CN103184928B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110450859.9A Active CN103184928B (en) | 2011-12-29 | 2011-12-29 | Fuel cut-off protection device for turbocharger |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819050B (en) * | 2015-04-24 | 2017-03-15 | 杜润德 | A kind of turbocharger intellective protector |
| CN104863702A (en) * | 2015-06-12 | 2015-08-26 | 徐旻睿 | Diesel vehicle turbocharging lubrication device |
| CN110005480A (en) * | 2019-04-02 | 2019-07-12 | 中国北方发动机研究所(天津) | A kind of TC bearings body structure |
| CN111120080A (en) * | 2019-12-31 | 2020-05-08 | 潍柴动力股份有限公司 | Quick oil feeding system of booster |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268620A (en) * | 1975-12-05 | 1977-06-07 | Automob Antipollut & Saf Res Center | Lubrication device for exhaust gas turbine type supercharger |
| SE514227C2 (en) * | 1999-01-20 | 2001-01-22 | Tore Kaellander | Apparatus adapted to cool a machine assembly adapted to be associated with a motor |
| KR20020085718A (en) * | 2001-05-10 | 2002-11-16 | 현대자동차주식회사 | Turbocharger system having oil compensation function |
| DE10324986B4 (en) * | 2003-06-03 | 2005-11-10 | Man B & W Diesel Ag | Device for emergency lubrication |
| FR2872851B1 (en) * | 2004-07-12 | 2008-03-28 | Peugeot Citroen Automobiles Sa | CIRCUIT FOR COOLING A TURBOCHARGER AND METHOD FOR COOLING THE TURBOCHARGER OF SUCH A CIRCUIT |
| CN2888093Y (en) * | 2006-01-25 | 2007-04-11 | 罗中柱 | Worm wheel supercharger protection system |
| JP2007239568A (en) * | 2006-03-08 | 2007-09-20 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Lubrication device of turbocharger |
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| CN103184928A (en) | 2013-07-03 |
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