CN202545010U - Automatic protection device of exhaust turbocharger - Google Patents
Automatic protection device of exhaust turbocharger Download PDFInfo
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- CN202545010U CN202545010U CN 201220067394 CN201220067394U CN202545010U CN 202545010 U CN202545010 U CN 202545010U CN 201220067394 CN201220067394 CN 201220067394 CN 201220067394 U CN201220067394 U CN 201220067394U CN 202545010 U CN202545010 U CN 202545010U
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Abstract
The utility model discloses an automatic protection device of an exhaust turbocharger. The automatic protection device of the exhaust turbocharger comprises a storage battery, a power supply switch, a relay, an oil pressure alarm sensor, an electromagnet, a starting lubrication oil chamber and a flameout lubrication oil chamber, wherein the storage battery, the power supply switch, the relay, the oil pressure alarm sensor and the electromagnet are sequentially connected through conducting wires. When an engine normally works, the engine can store some lubrication oil by suing the automatic protection device. When the engine is started, an oil storage device supplies some lubrication oil for a turbine shaft and a bearing in advance. When the engine stops rotation, the automatic protection device plays a role of lubricating and cooling the turbine shaft and the bearing, so that the damage to the exhaust turbocharger is reduced.
Description
Technical field
The utility model relates to Motor Vehicle power equipment field, in particular, relates to a kind of exhaust-gas turbocharger automatic safety device of automobile dynamic system.
Background technique
When motor car engine was leaned on natural aspiration, air imbibed quantity received the restriction of gas handling system resistance, only can suck 70%～80% tolerance, so power is difficult to improve.Improving the effective measures of power is to increase aeration quantity.At present, adopt this method of exhaust gas turbocharge to increase aeration quantity both at home and abroad usually.
After having adopted exhaust gas turbocharge; Making the air that gets into cylinder is not to rely on natural aspiration; But the waste gas that utilizes the engine cylinder internal combustion to produce; Promote the turbine rotation of pressurized machine, drive thus with the coaxial gas compressor of turbine with the realization supercharging, the limit speed of impeller generally reaches about 150000rpm～300000rpm.Forced air is pressed into cylinder by exhaust-gas turbocharger (abbreviation pressurized machine), air quantity is increased, the amount of fuel of injection also can correspondingly increase, and power is improved greatly.Adopt exhaust gas turbocharge not only can improve power 30%～60% even more, also can reduce the specific power quality, dwindle boundary dimension; Save material, complete because of burning, corresponding reduction fuel consume, smoke intensity also makes moderate progress; Reduce automobile gas emission pollution; It is softer to work, and noise ratio is less, so on motor car engine, obtained using widely.
The working principle of exhaust-gas turbocharger is as shown in Figure 1, among the figure: cylinder 1, intercooler 2, exhaust-gas turbocharger 3.Outlet pipe is received on the turbine case of pressurized machine.The high-temp waste gas with certain pressure that motor is discharged gets into nozzle ring through turbine case, because that the aisle spare of nozzle ring is made is descending, thereby the pressure and temperature of waste gas descends, and speed improves rapidly.This off-gas flows is at a high speed pressed the certain orientation impulse turbine, makes the turbine high speed rotating, and the pressure of waste gas and speed are high more, and secondary speed is also high more.Waste gas through turbine enters atmosphere at last.At this moment also rotate with the compressor impeller that turbine is packed on the same roots rotor axle, will suck compressor casing through the air of filter cleaner filtering with identical speed.The compressor impeller of high speed rotating gets rid of the outer rim to impeller to air, and its speed and pressure are increased, and gets into shape and make the big Diffuser of the little outlet of import, so the speed falling pressure of air-flow raises.Make air pressure continue to raise through the ascending annular compressor casing of section again.The high-pressure air engine air inlet tube of flowing through gets into cylinder and more fuel oil mixed combustion, to guarantee to send bigger power.
The structure of exhaust-gas turbocharger is made up of major parts such as turbine case, middle case, compressor casing, rotor body and floating bearings.Turbine case is connected with outlet pipe, and the import of compressor casing links to each other with air-strainer through flexible pipe, and cylinder is led in its outlet.Rotor body is made up of rotor shaft, compressor impeller and turbine, is bearing on two floating bearings and makes high speed rotating, and turbine is welded on the rotor shaft, and compressor impeller is fixed on the rotor shaft with nut.
Proper lubrication between two surface of contact that guarantee thrust-bearing and stuffing box gland has oblique and axial oil duct on thrust-bearing.The needed lubricant oil of exhaust-gas turbocharger is from main oil gallery, once more after the filtering, gets into the middle case of pressurized machine through secondary filter, and oil outlet flows back to oil pan through its underpart.For preventing that lubricant oil from scurrying into turbine and compressor impeller, be mounted with seal ring and stuffing box gland at the rotor shaft two ends.Between middle case and turbine case, thermal baffle is housed, to reduce the adverse effect of high-temp waste gas to lubricant oil.
Lubricated and the cooling of exhaust-gas turbocharger bearing is the key that guarantees the exhaust-gas turbocharger reliably working.In use; If motor is shut down suddenly under at a high speed big load operation state; This moment, supercharger rotor was in high temperature, the high speed bad working environment, and secondary speed can be up to 150000rpm～300000rpm, and rotor bearing just can stop about coasting 2min～3min under the no oily dry grinding state; Will certainly cause like this bearing and rotor shaft premature wear, pull, phenomenon such as overheated scaling loss, thereby influence the service behaviour and the reliability of pressurized machine.So development is gone down, and it is bad to make motor burning occur, engine roughness, and intake and exhaust are not smooth, and boost pressure reduces, and power descends, black smoke from exhaust; On-stream generation noise sends bump, the grating of metal, perhaps produces vibration; The rotor assembly work that runs improperly, damage of bearings, seal ring damages, and leaks machine oil, and the pressurized machine carbon distribution increases, engine exhaust over-emitting black exhaust, even fault such as pressurized machine damage.
To the shortcoming of exhaust-gas turbocharger, each manufactory has all stipulated certain " correct method for using ", as:
1. after the engine start, idling 5min at least reloads after making engine oil pressure normal, otherwise can burn bearing because of the exhaust-gas turbocharger oil starvation.
2. every more change engine oil and oil filter, park (surpass a week) for a long time, ambient temperature is low excessively, must unclamp the exhaust-gas turbocharger fuel inlet neck, injects clean lubricant oil, make obtain being full of in the exhaust-gas turbocharger lubrication system lubricated.When injecting lubricant oil, can rotor assembly be rotated, make it obtain sufficient lubricating.
3. motor is when the high speed running at full capacity, or can not stop immediately in the lasting high-load operation.Like unexpected parking, the exhaust-gas turbocharger rotor also can continue rotation because of inertia, and lubricant oil is no longer supplied behind the engine cut-off, is easy to make bearing, rotor assembly because of oil starvation or overheated the damage like this; Exhaust-gas turbocharger is in continuous running, and bearing portion is taken away heat by lubricant oil, stops suddenly, and the heat on the bearing can't leave, and bearing running hot is damaged.Answer idle running 3min～5min before the parking.
Top regulation; The vehicle that uses generally speaking can both be accomplished; But the vehicle that has just can't satisfy top regulation; Like vehicle that ambulance, fire-fighting truck, rescue vehicle, military vehicle are particularly being fought or the like, if after these vehicles startings at least idling 5min or stop before answer idle running 3min～5min, that kind can result in greater loss or the life of oneself all might be lost.So vehicle of particularly fighting at ambulance, fire-fighting truck, rescue vehicle, military vehicle; The damage of exhaust-gas turbocharger is very serious; Given this, the exhaust-gas turbocharger automatic safety device being installed on the vehicle that ambulance, fire-fighting truck, rescue vehicle, military vehicle are particularly being fought is very important.
The model utility content
The utility model technical problem to be solved is, overcomes the defective that exists in the existing technology, and a kind of exhaust-gas turbocharger automatic safety device is provided.
The utility model exhaust-gas turbocharger automatic safety device comprises storage battery, power switch, relay, engine oil pressure alarm sensor; Electromagnet, initial lubrication accumulator and flame-out lubricated accumulator; Said storage battery, power switch, relay, engine oil pressure alarm sensor are connected through lead with electromagnet successively, in the initial lubrication accumulator pull bar are set, and pull bar one end passes through fixedly lube pistons of nut; The pull bar the other end and electromagnet are adjacent, and lubricated pressure spring is set on the pull bar; Initial lubrication accumulator top is provided with lubricating oil inlet, and initial lubrication accumulator bottom is provided with lubricating oil outlet and air intlet respectively; In the flame-out lubricated accumulator piston is set, between the inboard and flame-out lubricated accumulator sidewall of piston pressure spring is set, flame-out lubricated accumulator top is provided with filler opening, and flame-out lubricated accumulator bottom sets out hydraulic fluid port and suction port respectively; Said lubricating oil inlet is connected the motor main oil gallery respectively with filler opening, and said lubricating oil outlet is connected exhaust-gas turbocharger lubricant oil input pipeline respectively with oil outlet.
Can store when using the utility model can guarantee the motor proper functioning and have certain lubricant oil.When engine start, can to turbine shaft and bearing certain lubricant oil be provided in advance by Fuel Tanking Unit, play the effect of lubricated turbine shaft and bearing; When motor stops operating, can continue certain lubricant oil to be provided by Fuel Tanking Unit to the turbine shaft and the bearing of high speed rotating, play the effect of lubricated cooling turbine axle and bearing.Thereby reduced the damage of exhaust-gas turbocharger; The picture of each manufactory regulation " after the engine start, at least idling 5min, for a long time park must inject ' the correctly method for using ' that clean lubricant oil, high speed running at full capacity are answered idle running 3min～5min before can not stopping immediately, stopping " also can cancel.
Description of drawings
Fig. 1 is the fundamental diagram of exhaust-gas turbocharger;
Fig. 2 is the utility model exhaust-gas turbocharger automatic safety device structure principle chart.
Embodiment
The utility model is installed in the front of exhaust-gas turbocharger, is connected in parallel between the exhaust-gas turbocharger lubricant pipe inlet.
The utility model is as shown in Figure 2; Comprise storage battery, power switch, relay, engine oil pressure alarm sensor, electromagnet 4, initial lubrication accumulator 5 and flame-out lubricated accumulator 6, said storage battery, power switch, relay, engine oil pressure alarm sensor are connected through lead with electromagnet successively; Pull bar 7 is set in the initial lubrication accumulator; Pull bar one end passes through fixedly lube pistons 8 of nut, and the pull bar the other end and electromagnet are adjacent, and lubricated pressure spring 9 is set on the pull bar; Initial lubrication accumulator top is provided with lubricating oil inlet 10, and initial lubrication accumulator bottom is provided with lubricating oil outlet 11 and air intlet 12 respectively; In the flame-out lubricated accumulator piston 13 is set, between the inboard and flame-out lubricated accumulator sidewall of piston pressure spring 14 is set, flame-out lubricated accumulator top is provided with filler opening 15, and flame-out lubricated accumulator bottom sets out hydraulic fluid port 16 and suction port 17 respectively; Said lubricating oil inlet is connected the motor main oil gallery respectively with filler opening, and said lubricating oil outlet is connected exhaust-gas turbocharger lubricant oil input pipeline respectively with oil outlet.
During the motor proper functioning, in order to guarantee exhaust-gas turbocharger enough Lubricantss are arranged, it is thicker that the oil inlet pipe of the Lubricants of former car and return tube are all made; It is thinner that the oil inlet pipe of exhaust-gas turbocharger automatic safety device and oil outlet tube are all made; So; The exhaust-gas turbocharger automatic safety device can only be connected in parallel on the former lubricant pipe of exhaust-gas turbocharger ingress, and the nearlyer effect of the distance of the oil outlet of the oil outlet tube of exhaust-gas turbocharger automatic safety device and exhaust-gas turbocharger is good more.
The exhaust-gas turbocharger automatic safety device; Comprise storage battery BATTERY; Power switch SW; Engine oil pressure alarm sensor
, relay J that increases newly and electromagnet EMI.The voltage Applicable scope of relay J that increases newly and electromagnet EMI and the voltage of former automobile are consistent, and the branch of 12V and 24V is all arranged.
Pilot engine; When turning to the ON position to power switch SW; The flow of current direction is: suction coil, engine oil pressure alarm sensor
(when engine oil pressure was lower than the normal pressure of regulation, engine oil pressure alarm sensor
was on state), bonding, the storage battery BATTERY negative pole of storage battery BATTERY positive pole, power switch SW, the relay J that increases newly.Owing to the suction coil of relay J gets the electric suction that produces; Make its make contact; Thereby make electromagnet 4 get electric and generation suction, pull bar 7 usefulness nuts and piston 8 link together, and the suction of electromagnet 4 makes pull bar 7 drive lube pistons 8, lubricated pressure spring 9 moves right; The leftward space volume of lube pistons 8 increases, and gets into air by the air intlet that leads to atmosphere 12; The right side accumulator volume-diminished of lube pistons 8; The engine oil pressure that is stored in the initial lubrication accumulator 5 raises; The rising of engine oil pressure makes the valve closing of lubricating oil inlet 10; The valve open of lubricating oil outlet 11; Be stored in machine oil in the initial lubrication accumulator 5 and be pressed to the former lubricant pipe ingress of exhaust-gas turbocharger 18, it is lubricated in advance to make that the bearing of exhaust-gas turbocharger 18 obtains, and lubrication time is decided by the suction of electromagnet 4, the elastic force of lubricated spring 9, the volume of initial lubrication accumulator 5, the size of lubricating oil outlet 11; Key is the size of the volume and the lubricating oil outlet 11 of initial lubrication accumulator 5, when making, is remained on about 2min its operating time.
When power switch SW turned to the ST position, starter motor was started working; The moment that starter motor is started working always lags behind the moment that electromagnet EMI starts working; The starter motor motor of starting working begins to rotate, and it is normal arrive engine rotation again, and at this moment the bearing of exhaust-gas turbocharger 18 has obtained lubricating preferably under the effect of automatic safety device in advance.
Engine start; After the lubricant oil of main oil gallery reaches certain pressure; Engine oil pressure alarm sensor
breaks off under the effect of machine oil; The suction coil losing electricity of relay J opens its contact, thereby makes also dead electricity of electromagnet 4.
Because the filler opening 15 of the flame-out lubricated accumulator 6 of automatic safety device and the lubricating oil inlet 10 of initial lubrication accumulator 5 all are connected on the main oil gallery of motor; So after the engine start; After the lubricant oil of main oil gallery reaches certain pressure; The one-way valve that machine oil presses off lubricating oil inlet 10 gets into accumulator 5, and the elastic force of engine oil pressure and lubricated spring 9 makes lube pistons 8 drive pull bar 7 and moves to the left; The leftward space volume reduces, and air enters atmosphere by the air intlet 12 that leads to atmosphere; The right side accumulator of lube pistons 8 has been full of machine oil, during for engine start next time, exhaust-gas turbocharger mention lubricated getting ready.On lube pistons 8 and the piston 10 the twice oil sealing is installed all, guarantees that machine oil can not produce leakage phenomenon.
Equally, after engine start, after the lubricant oil of main oil gallery reached certain pressure, the one-way valve that machine oil presses off filler opening 15 got into flame-out lubricated accumulator 6, and the elastic force that engine oil pressure forces piston 13 to overcome spring 14 moves to the left; The leftward space volume reduces, and air enters atmosphere by the suction port 17 that leads to atmosphere; The right side accumulator of piston 13 has been full of machine oil, and during for engine misses, the lubricated of exhaust-gas turbocharger got ready.
Motor is when proper functioning; The filler opening 15 of flame-out lubricated accumulator 6 all is connected on the main oil gallery of motor with lubricating oil outlet 11 with the lubricating oil inlet 10 of oil outlet 16 with initial lubrication accumulator 5; The engine oil pressure difference of main oil gallery is almost nil; So initial lubrication accumulator 5 fills machine oil with flame-out lubricated 6 storages of accumulator, and does not have flowing of machine oil.
When engine misses, the engine oil pressure of main oil gallery drops to zero very soon.Piston 13 moves under the elastic force effect of spring 14 to the right, and the leftward space volume increases, and gets into air by the suction port that leads to atmosphere 17; The right side accumulator volume of piston 13 reduces; Filler opening 15 is closed at the effect lower valve of engine oil pressure; The valve open of oil outlet 16; Be stored in the flame-out former lubricant pipe ingress that accumulator 6 interior machine oil are pressed to exhaust-gas turbocharger 18 of lubricating, make the bearing of exhaust-gas turbocharger 18 obtain lubricating, lubrication time is decided by the elastic force of spring 14, the volume of flame-out lubricated accumulator 6, the size of oil outlet 16; Key is the volume of flame-out lubricated accumulator 6 and the size of oil outlet 16, when making, is remained on about 2min its operating time.
Claims (2)
1. exhaust-gas turbocharger automatic safety device; It is characterized in that; Comprise storage battery, power switch, relay, engine oil pressure alarm sensor, electromagnet, initial lubrication accumulator and flame-out lubricated accumulator, said storage battery, power switch, relay, engine oil pressure alarm sensor are connected through lead with electromagnet successively; In the initial lubrication accumulator pull bar is set; Pull bar one end passes through fixedly lube pistons of nut, and the pull bar the other end and electromagnet are adjacent, and lubricated pressure spring is set on the pull bar; Initial lubrication accumulator top is provided with lubricating oil inlet, and initial lubrication accumulator bottom is provided with lubricating oil outlet and air intlet respectively; In the flame-out lubricated accumulator piston is set, between the inboard and flame-out lubricated accumulator sidewall of piston pressure spring is set, flame-out lubricated accumulator top is provided with filler opening, and flame-out lubricated accumulator bottom sets out hydraulic fluid port and suction port respectively; Said lubricating oil inlet is connected the motor main oil gallery respectively with filler opening, and said lubricating oil outlet is connected exhaust-gas turbocharger lubricant oil input pipeline respectively with oil outlet.
2. exhaust-gas turbocharger automatic safety device according to claim 1 is characterized in that, the twice oil sealing is installed respectively on said lube pistons and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220067394 CN202545010U (en) | 2012-02-28 | 2012-02-28 | Automatic protection device of exhaust turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220067394 CN202545010U (en) | 2012-02-28 | 2012-02-28 | Automatic protection device of exhaust turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545010U true CN202545010U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220067394 Expired - Fee Related CN202545010U (en) | 2012-02-28 | 2012-02-28 | Automatic protection device of exhaust turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545010U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536441A (en) * | 2012-02-28 | 2012-07-04 | 中国人民解放军军事交通学院 | Automatic protection device for exhaust gas turbocharger |
| CN103742256A (en) * | 2013-12-24 | 2014-04-23 | 潍柴动力股份有限公司 | Protection method and protection device for engine and engine supercharger |
| CN104863702A (en) * | 2015-06-12 | 2015-08-26 | 徐旻睿 | Diesel vehicle turbocharging lubrication device |
-
2012
- 2012-02-28 CN CN 201220067394 patent/CN202545010U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536441A (en) * | 2012-02-28 | 2012-07-04 | 中国人民解放军军事交通学院 | Automatic protection device for exhaust gas turbocharger |
| CN103742256A (en) * | 2013-12-24 | 2014-04-23 | 潍柴动力股份有限公司 | Protection method and protection device for engine and engine supercharger |
| CN103742256B (en) * | 2013-12-24 | 2016-03-16 | 潍柴动力股份有限公司 | Motor, engine supercharger guard method and device |
| CN104863702A (en) * | 2015-06-12 | 2015-08-26 | 徐旻睿 | Diesel vehicle turbocharging lubrication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20140228 |