CN110173380A - Engine and vehicle - Google Patents
Engine and vehicle Download PDFInfo
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- CN110173380A CN110173380A CN201910612915.0A CN201910612915A CN110173380A CN 110173380 A CN110173380 A CN 110173380A CN 201910612915 A CN201910612915 A CN 201910612915A CN 110173380 A CN110173380 A CN 110173380A
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- pipe
- turbine
- exhaust gas
- engine
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- 239000007789 gas Substances 0.000 claims abstract description 101
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 15
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
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- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
- F02M26/43—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention proposes a kind of engine and vehicles, wherein engine includes: cylinder, and two sides are respectively equipped with air inlet pipe and exhaust pipe；Booster, turbine and pinch roller including transmission connection, turbine are set on exhaust pipe, and impeller is set in air inlet pipe, and turbine is used for the exhaust gas driven being discharged by exhaust pipe, with the air in impeller compression air inlet pipe and are imported in cylinder；Circulating exhaust component, including the reversal valve for switching waste gas flow direction；Exhaust gas bypass, one end are connected to the exhaust pipe of the upstream side of turbine, and the other end is for being vented；Control valve, aperture is adjustable and is set in exhaust gas bypass, controller, for the aperture of adjusting control valve and the direction switching of reversal valve.According to the technical solution of the present invention, effectively provide a kind of simple engine of structure, can substitute the engine using VGT form booster, and can accurate adjusting engine air input, and then realize the purpose of adjustment excess air coefficient value.
Description
Technical field
The present invention relates to vehicle arrangement technical fields, in particular to a kind of engine and a kind of vehicle.
Background technique
As the requirement of national environmental protection regulation is increasingly severe, to engine consumption it is also proposed that very high requirement.According to burning
Demand, to meet comprehensive combustion economy and emission request, Foreign Engine mainstream uses VGT (Variable at present
Geometry turbocharger, variable cross section turbo charge system), to adjust the engine whirlpool under different operating conditions and revolving speed
The driving force of wheel to change the wheel rotation speed of engine compressor, and then adjusts air input of engine by air, final to realize control
System enters the gas flow that engine participates in burning, realizes the purpose of adjustment excess air coefficient value in other words, so that control is started
The economy of machine discharge and fuel oil.
The booster machining accuracy of VGT form is high at present, domestic supply extremely stringent and at high cost to client's requirement
Quotient is temporarily without mature market application experience, and VGT is unable to get batch application when engine development selects.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
In view of this, it is an object of the present invention to provide a kind of engines.
It is another object of the present invention to provide a kind of vehicles.
To achieve the goals above, the technical solution of first aspect present invention provides a kind of engine, comprising: cylinder,
Two sides are respectively equipped with air inlet pipe and exhaust pipe；Booster, turbine and pinch roller including transmission connection, turbine are set on exhaust pipe,
Impeller is set in air inlet pipe, and turbine is used for the exhaust gas driven being discharged by exhaust pipe, with the air in impeller compression air inlet pipe
And it imports in cylinder；Circulating exhaust component, both ends are connected to air inlet pipe and exhaust pipe respectively, and exhaust gas is sent into cylinder and is carried out
Recycling, circulating exhaust component includes the reversal valve for switching waste gas flow direction, to recycle or be discharged exhaust gas；Exhaust gas bypass is given up
One end of gas bypass is connected to the exhaust pipe of the upstream side of turbine, and the other end of exhaust gas bypass is for being vented；Control valve is set to useless
The on-off of exhaust gas bypass is controlled in gas bypass, and the aperture of control valve is adjustable；Controller, it is electric with control valve and reversal valve respectively
Connection；Wherein, controller is used for the aperture of adjusting control valve, is also used to control the direction switching of reversal valve.
In the technical scheme, by the setting of control valve, and the aperture of control valve is adjustable, so as to according to engine
Different operating condition, by the aperture of controller adjusting control valve, to adjust the driving force of booster, to change pressurization pressure
Power, and then optimize the purpose of burning excess air coefficient.The booster of such structure and VGT form can obtain identical gas
The regulating effect of the scale of construction is fully able to the booster of substitution VGT form, and such structure is simple, is readily produced and controls, also
Maintenance convenient for safeguarding.In addition, circulating exhaust component includes reversal valve, and reversal valve can switching direction under the control of the controller,
So that exhaust gas is recycled or is discharged, the quantity of the exhaust gas into recycling can be reduced when exhaust gas is discharged, that is, is reduced
The quantity that cylinder participates in the exhaust gas of burning is reentered, the air inflow of cylinder is decreased in other words, realizes excess air system
The purpose that numerical value is adjusted.Simultaneously as the temperature of exhaust gas itself is higher, by after reversal valve discharge part exhaust gas, that is, reducing
The quantity of the high-temp waste gas entered in cylinder so that the temperature in cylinder can also be reduced reduces the work of engine radiator
Reduce engine because high temperature generates the possibility of failure as amount.
It is to be appreciated that the setting of reversal valve mainly can be used as the supplement of control valve, excess air coefficient value is promoted
Adjustable range；When the aperture of control valve is opened to maximum value, if the amplitude of accommodation of gas flow is not able to satisfy excessive sky still
Gas coefficient value, can open that reversal valve is further to be adjusted at this time；It is of course also possible to which first opening reversal valve adjusts roughly cylinder
Air inflow, the air inflow of cylinder is then precisely adjusted by the aperture regulation of control valve again.
In the above-mentioned technical solutions, the exhaust pipe in the downstream side of the other end and turbine of exhaust gas bypass is connected to.
In the above-mentioned technical solutions, circulating exhaust component includes: recirculation pipe, and both ends are respectively communicated with air inlet pipe and exhaust
Pipe；Reversal valve is set on recirculation pipe, and reversal valve has first interface, second interface and third interface, first interface and turbine
Upstream side exhaust pipe connection, second interface is connected to the air inlet pipe in the downstream side of impeller, and third interface is for being vented.
In the above-mentioned technical solutions, circulating exhaust component further include: cooler, to cool down exhaust gas on recirculation pipe.
In the above-mentioned technical solutions, reversal valve is between cooler and exhaust pipe.
In any of the above-described technical solution, circulating exhaust component further include: the third of exhaust branch pipe, one end and reversal valve
Orifice, exhaust branch pipe is for being discharged exhaust gas.
In the above-mentioned technical solutions, the other end of exhaust branch pipe is connected to the exhaust pipe in the downstream side for being located at turbine.
In the above-mentioned technical solutions, circulating exhaust component further include: recycle valve, set on the recycling of circulating exhaust component
On pipe and between reversal valve and exhaust pipe, recycle valve is used to control the on-off of recirculation pipe.
In the above-mentioned technical solutions, booster further include: turbine, turbine are set in turbine；Compressor, impeller are set to
In compressor.
The technical solution of second aspect of the present invention provides a kind of any one of vehicle, including above-mentioned first aspect technical side
The engine of case.
In the technical scheme, by using the engine of any of the above-described technical solution, to be provided with above-mentioned technology
Whole beneficial effects of scheme, details are not described herein.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram of the engine of one embodiment of the present of invention；
Fig. 2 is the flow diagram of the control method of the engine of one embodiment of the present of invention.
Wherein, the appended drawing reference in Fig. 1 and the corresponding relationship between component names are as follows:
10 cylinders, 12 air inlet pipe, 14 exhaust pipes, 16 boosters, 160 turbines, 162 compressors, 18 circulating exhaust components,
180 recirculation pipes, 182 reversal valves, 184 coolers, 186 recycle valves, 188 exhaust branch pipes, 20 exhaust gas bypass, 200 control valves.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
According to some embodiments of the present invention referring to Fig. 1 and Fig. 2 description.
As shown in Figure 1, the engine of the one embodiment proposed according to the present invention, comprising: cylinder 10, two sides are respectively equipped with
Air inlet pipe 12 and exhaust pipe 14；Booster 16, turbine and pinch roller including transmission connection, turbine are set on exhaust pipe 14, impeller
In air inlet pipe 12, turbine is used for the exhaust gas driven being discharged by exhaust pipe 14, with the sky in impeller compression air inlet pipe 12
Gas simultaneously imports in cylinder 10；Circulating exhaust component 18, both ends are connected to air inlet pipe 12 and exhaust pipe 14 respectively, exhaust gas are sent into
It is recycled in cylinder 10, circulating exhaust component 18 includes the reversal valve 182 for switching waste gas flow direction, to recycle or be discharged
Exhaust gas；The exhaust pipe 14 of exhaust gas bypass 20, the upstream side of one end and turbine of exhaust gas bypass 20 is connected to, exhaust gas bypass 20 it is another
End is for being vented；Control valve 200 controls the on-off of exhaust gas bypass 20, and the aperture of control valve 200 in exhaust gas bypass 20
It is adjustable；Controller is electrically connected with control valve 200 and reversal valve 182 respectively；Wherein, controller opening for adjusting control valve 200
Degree is also used to control the direction switching of reversal valve 182.
Fig. 1 shows the working principle of the engine of the application and the flow direction of air and waste gas, as shown in Figure 1, hollow
Arrow is air flow direction, and filled arrows are waste gas flow direction.
In this embodiment, by the setting of control valve 200, and the aperture of control valve 200 is adjustable, so as to according to hair
The different operating condition of motivation, by the aperture of controller adjusting control valve 200, to adjust the driving force of booster, to change
Become boost pressure, and then optimizes the purpose of burning excess air coefficient.The booster of such structure and VGT form can obtain
The regulating effect of identical gas flow is fully able to the booster of substitution VGT form, and such structure is simple, is readily produced
And control, it is also convenient for maintenance.In addition, circulating exhaust component 18 includes reversal valve 182, and reversal valve 182 can be in controller
Control under switching direction, so that exhaust gas is recycled or is discharged, can be reduced when exhaust gas is discharged into recycling
The quantity of exhaust gas reduces the quantity for reentering the exhaust gas that cylinder participates in burning, decreases the air inlet of cylinder in other words
Amount realizes the purpose that excess air coefficient value is adjusted.Simultaneously as the temperature of exhaust gas itself is higher, by from 182 row of reversal valve
Out after portion, that is, reduce the quantity into the high-temp waste gas in cylinder 10, so that the temperature in cylinder 10 can also be reduced
Degree, reduces the workload of engine radiator, reduces engine because high temperature generates the possibility of failure.
It is to be appreciated that the setting of reversal valve 182, mainly can be used as the supplement of control valve 200, excess air system is promoted
The adjustable range of numerical value；When the aperture of control valve 200 is opened to maximum value, if the amplitude of accommodation of gas flow cannot still expire
Sufficient excess air coefficient value, can open that reversal valve 182 is further to be adjusted at this time；It is of course also possible to first open reversal valve
The air inflow of 182 rough adjustment cylinders, then passes through the aperture regulation of control valve 200 again, precisely adjusts the air inflow of cylinder.
Specifically, by the setting of cylinder 10, two sides are respectively equipped with air inlet pipe 12 and exhaust pipe 14, are convenient for gas from air inlet
Pipe 12, which enters in cylinder 10, to burn, then is discharged from exhaust pipe 14；By 16 both ends of booster respectively with air inlet pipe 12 and row
Tracheae 14 connects, and with the turbine for the exhaust-driven supercharger 16 being discharged by exhaust pipe 14, turbine drive is sequentially connected with it
Air in wheel compresses air inlet pipe 12 simultaneously imports in cylinder 10, can make full use of the energy of the exhaust gas in exhaust pipe 14 in this way
Booster 16 is driven, to reduce energy consumption, saves the energy；Further, by the both ends of circulating exhaust component 18 respectively with into
Tracheae 12 is connected to exhaust pipe 14, is recycled convenient for portion to be sent into cylinder 10, in this way convenient for reduction nitrogen oxidation
The discharge of object reduces pollution；Include reversal valve 182 on circulating exhaust component 18, it is useless that part can be released by reversal valve 182
Gas does not enter back into recycling, reduces the air inflow of cylinder；The quantity that high-temperature gas enters cylinder 10 is also reduced, is avoided
Cylinder 10 temperature is excessively high, reduces engine failure caused by high temperature；Pass through one end of exhaust gas bypass 20 and the upstream of turbine
The exhaust pipe 14 of side is connected to, i.e., exhaust gas bypass 20 is set on the exhaust pipe between booster and cylinder, and is set in exhaust gas bypass 20
There is the control valve 200 that can control aperture, control valve 200 and reversal valve 182 are electrically connected with the controller respectively, can pass through in this way
The control of controller, so that at least partly exhaust gas can be discharged before through booster from exhaust gas bypass 20, the quantity of discharge can
To pass through the aperture regulation of control valve 200, accurate control is realized；Further, it can also be cut by the direction of reversal valve 182
It changes, increases the discharge amount of exhaust gas, to increase the adjustable range of cylinder intake air quantity.
It it may also be noted that exhaust gas is discharged in exhaust gas bypass 20 and reversal valve 182, can be discharged, be managed by pipeline
Road is separately provided, and can also be merged into exhaust pipe, makes exhaust gas in recirculation pipe or exhaust gas bypass 20 and flows through from booster
Exhaust gas is discharged together.
It is to be appreciated that turbine is arranged on exhaust pipe 14, exhaust gas flows through to drive turbine rotation, turbine flow from turbine
The side for entering exhaust gas is the upstream side of turbine, and the side that turbine flows out exhaust gas is downstream side, and turbine is close to cylinder 10 in other words
Side is upstream side, and the side far from cylinder 10 is downstream side；Impeller is arranged in air inlet pipe 12, and impeller is under the driving of turbine
The air of air inlet pipe 12 is compressed to and is imported cylinder 10, the side that air flows into impeller is upstream side, and air flows out impeller, is entered
The side of cylinder 10 is downstream side, i.e. side of the impeller far from cylinder 10 is upstream side, under impeller is close to the side of cylinder 10
Swim side；Need to pay attention to, the upstream side of turbine and the upstream side of impeller are just opposite.
In the above-described embodiments, the exhaust pipe 14 in the downstream side of the other end and turbine of exhaust gas bypass 20 is connected to.
In this embodiment, the other end of exhaust gas bypass 20 is connected to the exhaust pipe 14 in turbine downstream side, so that engine
Externally exhaust is final only by an exhaust passage, is conducive to the structure for simplifying engine in this way；Further, exhaust branch pipe
188 are connected to the exhaust pipe 14 in the downstream side for being located at turbine, i.e., the position that exhaust branch pipe 188 is connected to exhaust pipe 14 is located at turbine
Downstream side be expelled directly out after the exhaust gas in exhaust branch pipe 188 enters exhaust pipe 14 from the downstream side of turbine along exhaust pipe 14,
It is no longer participate in driving turbine, to reduce the driving force of turbine, and then impeller is reduced and imports air capacity in cylinder 10, it is ensured that is excessive
The realization that air coefficient value is adjusted.
In the above-described embodiments, circulating exhaust component 18 includes: recirculation pipe 180, and both ends are respectively communicated with 12 He of air inlet pipe
Exhaust pipe 14；Reversal valve 182 is set on recirculation pipe, and reversal valve 182 has first interface, second interface and third interface, the
One interface is connected to the exhaust pipe 14 of the upstream side of turbine, and second interface is connected to the air inlet pipe 12 in the downstream side of impeller, and third connects
Mouth is for being vented.
In this embodiment, circulating exhaust component 18 includes recirculation pipe 180, and reversal valve 182 has there are three interface, this
Sample is more flexible in waste gas circulation and discharge, can choose and all recycles the exhaust gas in recirculation pipe 180, or
Part is discharged, or all discharges；As shown in Figure 1, specifically, being connected in first interface with second interface, third interface
When closing, the exhaust gas in recirculation pipe 180 all enters air inlet pipe 12 from exhaust pipe 14, participates in following again together with compressed air
Ring；It is closed between first interface and second interface, when first interface is connected with third interface, the exhaust gas in recirculation pipe 180 is complete
Portion from third interface be discharged, thus amplitude peak reduce the exhausted air quantity for entering cylinder from recirculation pipe, also reduce entrance
It is excessively high to avoid 10 temperature of cylinder for the quantity of high-temperature gas in cylinder 10；It is equal in first interface, second interface and third interface
When connection, a part of exhaust gas in recirculation pipe 180 enters cylinder 10 and participates in burning, and another part exhaust gas then can be directly from the
The discharge of three interfaces.
In the above-described embodiments, circulating exhaust component 18 further include: cooler 184 is set on recirculation pipe 180 with cooling
Exhaust gas.
In this embodiment, by the way that cooler 184 is arranged on recirculation pipe 180, convenient in cooling recirculation pipe 180
Exhaust gas reduces its temperature before entering cylinder 10, to avoid 10 temperature of cylinder excessively high and damage engine.
In the above-described embodiments, reversal valve 182 is between cooler 184 and exhaust pipe 14.
In this embodiment, reversal valve 182 is arranged between cooler 184 and exhaust pipe 14, or perhaps reversal valve
182 second interface is connected to by cooler 184 with air inlet pipe 12, in this way when the third interface of reversal valve 182 is opened, exhaust gas
It can directly drain without subcooler 184, directly the heat of the exhaust gas of this part can be distributed in this way, avoided
184 non-productive work of cooler, is conducive to extend the service life of cooler 184, certainly, if second interface is also opened simultaneously,
Then exhaust gas a part in recirculation pipe 180 is directly drained, and another part can also enter back into cylinder 10, and enter cylinder 10
Before, it is cooled by cooler 184.
In the above-described embodiments, circulating exhaust component 18 further include: exhaust branch pipe 188, the third of one end and reversal valve 182
Orifice, exhaust branch pipe 188 is for being discharged exhaust gas.
In this embodiment, exhaust branch pipe 188 and third orifice enable exhaust gas in this way convenient for extending exhaust passage
It is enough directly discharged to device external, avoids the work or service life that are trapped in the other components of equipment internal influence.
In the above-described embodiments, the other end of exhaust branch pipe 188 is connected to the exhaust pipe 14 in the downstream side for being located at turbine.
In this embodiment, the other end of exhaust branch pipe 188 is connected to exhaust pipe 14, so that engine is externally vented finally
Only by an exhaust passage, be conducive to the structure for simplifying engine in this way；Further, exhaust branch pipe 188 be located at turbine
The exhaust pipe 14 in downstream side be connected to, i.e., the position that exhaust branch pipe 188 is connected to exhaust pipe 14 is located at the downstream side of turbine, exhaust
It after exhaust gas in branch pipe 188 enters exhaust pipe 14 from the downstream side of turbine, is expelled directly out along exhaust pipe 14, makes exhaust branch pipe 188
In exhaust gas be no longer participate in driving turbine, reduce the driving force of turbine, thereby reduce the driving force of impeller, reduce impeller
The amount of gas of driving, the final purpose realizing cylinder intake air quantity and adjusting.
In the above-described embodiments, circulating exhaust component 18 further include: recycle valve 186, set on circulating exhaust component 18
On recirculation pipe 180 and between reversal valve 182 and exhaust pipe 14, recycle valve is used to control the on-off of recirculation pipe.
In this embodiment, by controlling the on-off of recirculation pipe 180 in recycle valve 186, in this way when engine is negative
When operating under lotus, recycle valve 186 is opened, and a small amount of exhaust gas is made to enter air inlet pipe 12, and burning is entered together with combustion mixture
Room；Recycle valve 186 is closed when idling, almost without waste gas circulation to engine, so as to promote gas recirculation system
The flexibility of work and convenience.
In the above-described embodiments, booster 16 further include: turbine 160, turbine are set in turbine；Compressor, impeller
In compressor 162.
In this embodiment, extraneous factor is avoided to interfere its work convenient for protection turbine by the setting of turbine 160,
Extend turbine service life；By the setting of compressor 162, is conducive to protect impeller, avoids extraneous factor from interfering its work, prolong
Long impeller service life.
In any of the above-described a embodiment, engine further includes ambient pressure sensor, controller respectively with environmental pressure
Sensor, control valve 200 and reversal valve 182 are electrically connected, and controller is used for the environment pressure detected according to ambient pressure sensor
Power determines height above sea level corresponding to environmental pressure, and according to height above sea level, determines whether reversal valve 182 is vented, and determines
The aperture of control valve 200.
The control strategy of controller are as follows: when height above sea level is greater than the first preset height, by the valve exhaust that commutates, in height above sea level
When height is greater than the second preset height, by reversal valve and control valve common discharge, it is greater than third preset height in height above sea level
When, alert.
As shown in Fig. 2, according to the control method of above-mentioned control strategy, the specific steps are as follows:
Step S100: environmental pressure is obtained；
Step S102: according to environmental pressure, the height above sea level of engine position is determined；
Step S104: height above sea level and the first preset height, the second preset height are compared, wherein second is default
Height is greater than the first preset height；
Step S106: when height above sea level is less than or equal to the first preset height, reversal valve cycle gas is controlled；
Step S108: being greater than the first preset height in height above sea level and when less than the second preset height, control reversal valve row
Exhaust gas out；
Step S110: when height above sea level is more than or equal to the second preset height, compare height above sea level and third preset height
Size, wherein third preset height be greater than the second preset height；
Step S112: when height above sea level is less than third preset height, reversal valve and control valve common discharge, and root are controlled
The size that the difference of the second preset height is subtracted according to height above sea level determines that the aperture of control valve, aperture increase with the increase of difference
Greatly；
Step S114: when height above sea level is more than or equal to third preset height, alert.
By above-mentioned control method, engine can be made in different altitude height work, it is direct without turbine
The exhaust gas for discharging different number, changes the air inflow of cylinder therewith, thus realize the purpose of adjustment excess air coefficient value, with
So that engine is used the excess air coefficient value being more suitable in different altitude height, can also avoid sending out in high altitude localities
The problem of raw booster hypervelocity.
Optionally, ambient pressure sensor and controller can integrate setting, such as be integrated into engine controller；It can also
To be respectively separately provided.
Further, in any of the above-described embodiment, adjustable second control valve of aperture is additionally provided on exhaust pipe 14,
The upstream side of control valve 200 is arranged in second control valve, by the setting of the second control valve, and controls its aperture, can play
Similar to the effect of adjustment 14 caliber of exhaust pipe, to achieve the purpose that adjust discharge amount of exhaust gas and 10 air inflow of cylinder, in turn
Realize the adjustment of excess air coefficient value.
The embodiment of second aspect of the present invention provides a kind of vehicle, including any one of above-mentioned first aspect embodiment
Engine.
In this embodiment, by using the engine of any of the above-described embodiment, to be provided with above-described embodiment
Whole beneficial effects, details are not described herein.
According to the engine for the specific embodiment that the application proposes, enter booster 16 in the exhaust pipe 14 of engine
The leading portion of turbine is driven to increase independently of the exhaust gas bypass device except booster 16, by engine controller according to different fortune
Row operating condition carries out automatically controlled control to exhaust gas bypass device, to reach adjustment 16 driving force of booster to change boost pressure, into
And optimize the purpose of burning excess air coefficient.
Specifically, exhaust gas bypass device includes exhaust gas bypass 20 and control valve 200, and control valve 200 is controlled using engine
Device directly controls, with the aperture of adjusting control valve 200；Exhaust gas pressure control valve 200 adjusts engine exhaust and passes through exhaust gas bypass
20 bypass to tail gas amount, and then adjust the driving force of 16 turbine of booster, to reach wanting for engine combustion equivalent air coefficient
It asks.
The application has the advantages that
Present application addresses bottleneck problem is used using VGT structure booster, it is simple easily real to provide a kind of structural principle
Existing technical solution, the technical solution of the application had both solved engine and have needed asking for accurate adjusting boost pressure according to operating condition
Topic, and solve the domestic bottleneck problem without VGT maturation application experience, and the simple and reliable maintenance cost of scheme is low.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, according to the technical solution of the present invention, effectively mentions
A kind of simple engine of structure has been supplied, the engine using VGT form booster can have been substituted, and can accurately adjust and start
Machine air inflow, and then realize the purpose of adjustment excess air coefficient value.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as indicating
Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ",
The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, being also possible to can
Dismantling connection, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In description of the invention, it is to be understood that the instructions such as term " on ", "lower", "left", "right", "front", "rear"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or unit of indication or suggestion meaning must have specific direction, be constructed and operated in a specific orientation,
It is thus impossible to be interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of engine characterized by comprising
Cylinder (10), two sides are respectively equipped with air inlet pipe (12) and exhaust pipe (14)；
Booster (16), turbine and pinch roller including transmission connection, the turbine are set on the exhaust pipe (14), the impeller
On the air inlet pipe (12), the turbine is used for the exhaust gas driven being discharged by the exhaust pipe (14), to drive the leaf
Air in air inlet pipe described in wheel compression (12) simultaneously imports in the cylinder (10)；
Circulating exhaust component (18), both ends are connected to the air inlet pipe (12) and the exhaust pipe (14) respectively, will be described useless
Pneumatic transmission enters to be recycled in the cylinder (10), and the circulating exhaust component (18) includes the commutation for switching waste gas flow direction
Valve (182), to recycle or be discharged exhaust gas；
Exhaust gas bypass (20), one end of the exhaust gas bypass (20) are connected to the exhaust pipe (14) of the upstream side of the turbine, institute
The other end of exhaust gas bypass is stated for being vented；
Control valve (200) is set on the exhaust gas bypass (20) and controls the on-off of the exhaust gas bypass (20), and the control
The aperture of valve (200) is adjustable；
Controller is electrically connected with the control valve (200) and the reversal valve respectively；Wherein, the controller is for adjusting institute
The aperture for stating control valve (200) is also used to control the direction switching of the reversal valve (182).
2. engine according to claim 1, which is characterized in that
The other end of the exhaust gas bypass (20) is connected to the exhaust pipe (14) in the downstream side of the turbine.
3. engine according to claim 2, which is characterized in that
The circulating exhaust component (18) includes:
Recirculation pipe (180), both ends are respectively communicated with the air inlet pipe (12) and the exhaust pipe (14)；
The reversal valve (182) is set on the recirculation pipe (180), and there is the reversal valve (182) first interface, second to connect
Mouth and third interface, the first interface are connected to the exhaust pipe (14) of the upstream side of the turbine, the second interface
It is connected to the air inlet pipe (12) in the downstream side of the impeller, the third interface is for being vented.
4. engine according to claim 3, which is characterized in that the circulating exhaust component (18) further include:
Cooler (184) is set on the recirculation pipe (180) with the cooling exhaust gas.
5. engine according to claim 4, which is characterized in that
The reversal valve (182) is between the cooler (184) and the exhaust pipe (14).
6. engine according to claim 5, which is characterized in that the circulating exhaust component (18) further include:
Exhaust branch pipe (188), the third orifice of one end and the reversal valve (182), the exhaust branch pipe (188) is for arranging
The exhaust gas out.
7. engine according to claim 6, which is characterized in that
The other end of the exhaust branch pipe (188) is connected to the exhaust pipe (14) in the downstream side for being located at the turbine.
8. engine according to claim 7, which is characterized in that
The circulating exhaust component (18) further include:
Recycle valve (186) is set on the recirculation pipe (180) and is located at the reversal valve (182) and the exhaust pipe
(14) between, the recycle valve is used to control the on-off of the recirculation pipe.
9. engine according to claim 8, which is characterized in that
The booster (16) further include:
Turbine (160), the turbine are set in the turbine；
Compressor (162), the impeller are set in the compressor.
10. a kind of vehicle, which is characterized in that including engine of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910612915.0A CN110173380B (en) | 2019-07-09 | 2019-07-09 | Engine and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910612915.0A CN110173380B (en) | 2019-07-09 | 2019-07-09 | Engine and vehicle |
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| CN110173380B CN110173380B (en) | 2023-12-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10222919A1 (en) * | 2002-05-24 | 2003-12-24 | Man Nutzfahrzeuge Ag | Two-stage charged combustion engine has exhaust gas feedback control element, engine braking shut-off element, control element for varying exhaust gas applied to turbines implemented as rotary valve |
| JP2014139425A (en) * | 2013-01-21 | 2014-07-31 | Toyota Motor Corp | Internal combustion engine |
| DE102017119537A1 (en) * | 2017-08-25 | 2019-02-28 | Tenneco Gmbh | exhaust gas control system |
| CN210239872U (en) * | 2019-07-09 | 2020-04-03 | 昆山三一动力有限公司 | Engine and vehicle |
-
2019
- 2019-07-09 CN CN201910612915.0A patent/CN110173380B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10222919A1 (en) * | 2002-05-24 | 2003-12-24 | Man Nutzfahrzeuge Ag | Two-stage charged combustion engine has exhaust gas feedback control element, engine braking shut-off element, control element for varying exhaust gas applied to turbines implemented as rotary valve |
| JP2014139425A (en) * | 2013-01-21 | 2014-07-31 | Toyota Motor Corp | Internal combustion engine |
| DE102017119537A1 (en) * | 2017-08-25 | 2019-02-28 | Tenneco Gmbh | exhaust gas control system |
| CN210239872U (en) * | 2019-07-09 | 2020-04-03 | 昆山三一动力有限公司 | Engine and vehicle |
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| CN110173380B (en) | 2023-12-29 |
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