CN104533598B - Switchable successive/secondary boosting structure and control method - Google Patents
Switchable successive/secondary boosting structure and control method Download PDFInfo
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- CN104533598B CN104533598B CN201410653135.8A CN201410653135A CN104533598B CN 104533598 B CN104533598 B CN 104533598B CN 201410653135 A CN201410653135 A CN 201410653135A CN 104533598 B CN104533598 B CN 104533598B
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Abstract
The invention aims to provide a switchable successive/secondary boosting structure and a control method; two boosting structures of successive boosting and secondary boosting are changed for fusing; the invention further provides a two-boosting mode-switchable control method; the organic combination of the successive boosting and the secondary boosting is realized; and the advantages and the disadvantages of the two boosting modes are complementary. The switchable successive/secondary boosting structure and the control method can be applied to boosting systems of two or more exhaust driven superchargers, and can realize three modes of single turbocharger, two-turbocharger parallel connection-successive boosting and two-turbocharger serial connection-secondary boosting. The switchable successive/secondary boosting structure and the control method can improve the problem of weak matching between the exhaust driven superchargers and all working conditions of internal combustion engines, enhance the power performances of the internal combustion engines, improve the efficiency, reduce the emission, and are specifically suitable for the internal combustion engines with wider working condition ranges.
Description
Technical field
The present invention relates to a kind of Structure of Internal-Combustion Engine, specifically boosting internal combustion engine structure.
Background technology
In order that power of IC engine density is big, efficiency high, discharge performance are good, exhaust gas turbocharge skill is generally used now
Art.Exhaust turbine pressuring technology, promotes booster to contract internal combustion engine air inlet pressure using internal combustion engine waste gas energy, improves into airtight
Degree, and then increase air inflow, and improve scavenging effect.Exhaust energy utilization rate is just so improve, internal combustion engine work(is improve
Rate density, improves air-fuel ratio to a certain extent, reduces engine exhaust.
With the development of supercharging of internal combustion engine technology, a variety of supercharging modes and pressure charging system, such as two grades increasings are generated
Pressure, sequential pressurizing etc..Using the internal combustion engine of exhaust gas turbocharge, due to internal combustion engine wider range, and booster flow model
Enclose and high efficient area is narrower, generally can not realize that booster and internal combustion engine full working scope are preferably matched.Two-stage supercharging and sequential pressurizing
This problem can be effectively improved.
Sequential pressurizing general principle is, using two turbocharger, with the increase of internal-combustion engine rotational speed and load, to press in succession
Order ground putting into parallel operation, so ensures that the turbocharger that work is run in high efficient area all the time, so that interior
The fuel consumption of combustion engine is all relatively low in whole service area, and low-speed big is functional.
Two-stage supercharging general principle is using two turbocharger, with the increase of internal-combustion engine rotational speed and load, in order
Ground input series operation, improves pressure ratio, increases density of the induced air, it is ensured that the turbocharger for working operates in high efficient area,
So that the fuel consumption of internal combustion engine is all relatively low in whole service area, low-speed big is functional.
Because sequential pressurizing uses two turbocharger parallel runnings, and two-stage supercharging uses two turbocharger strings
Through transport row, therefore consecutive pressurization system is applied to the low condition of work of range of flow high pressure ratio, Two Stage Turbocharging System is applied to stream
The amount small pressure ratio of scope condition of work high.The internal combustion engine wider for condition range, when in slow-speed of revolution high load capacity, two grades of increasings
Pressure system can more preferably meet air inlet requirement；When in rotating speed underload high, consecutive pressurization system can more preferably meet air inlet requirement.
Traditional consecutive pressurization system and Two Stage Turbocharging System is that internal combustion engine full working scope is individually matched using a kind of pressure charging system, though
Preferably matching can be realized, but for condition range internal combustion engine wider, it is still not ideal enough.
The content of the invention
It is an object of the invention to provide can solve the problem that it is not ideal enough that exhaust-driven turbo-charger exhaust-gas turbo charger is matched with internal combustion engine full working scope
Problem it is changeable in succession/two-stage supercharging structure and control method.
The object of the present invention is achieved like this：
Changeable successive/two-stage supercharging the structure of the present invention, including the first booster, the second booster, internal combustion unit, first
The compressor of booster connects internal combustion unit by A row inlet manifold through A row inlet manifold, and the compressor of the first booster passes through
First compressor air inlet machine pipe connects air, and the turbine of the first booster connects internal combustion by A row exhaust main through A row exhaust manifold
Unit, the turbine of the first booster connects air by the first turbine exhaust pipe, and the compressor of the second booster passes through B row air inlets
House steward connects internal combustion unit through B row inlet manifold, and the compressor of the second booster connects air by the second compressor air inlet machine pipe,
The turbine of the second booster connects internal combustion unit by B row exhaust main through B row exhaust manifold, and the turbine of the second booster passes through
Second turbine exhaust pipe connects air, it is characterized in that：By installing inlet manifold between A row inlet manifold and B row inlet manifolds
Communicating pipe so as to connect, by installing compressor communicating pipe so as to connect between the first compressor air inlet machine pipe and B row inlet manifolds,
By installing turbine communicating pipe so as to connect between first turbine exhaust pipe and B row exhaust mains, A row exhaust main arranges row with B
The first booster is installed by installing exhaust main communicating pipe so as to connect between gas house steward, on the first compressor air inlet machine pipe to calm the anger
Machine intake valve, the first supercharger air compressor air inlet valve position connects interface tube upstream, the first turbine exhaust with compressor in air inlet pipe
First booster turbine air bleeding valve is installed, the first booster turbine air bleeding valve is connected in the first turbine exhaust pipe with turbine on pipe
Interface tube downstream, installs the first charge air cooler on A row inlet manifolds, the second charge air cooler, compressor connection are installed on B row inlet manifolds
Compressor communicating valve and the 3rd charge air cooler are installed on pipe, turbine communicating valve, turbine communicating pipe and exhaust are installed on turbine communicating pipe
Gas valve is installed on B row exhaust mains between house steward's communicating pipe, the B row between compressor communicating pipe and inlet manifold's communicating pipe
Air valve is installed on inlet manifold, the speed probe that its rotating speed and fuel injector rack position are gathered respectively is installed on internal combustion unit
With rack position sensor, speed probe and rack position sensor be all connected with the first supercharger air compressor intake valve of control,
Compressor communicating valve, the first booster turbine air bleeding valve, turbine communicating valve, air valve, the switch controller of gas valve opening and closing.
Changeable successive/two-stage supercharging the control method of the present invention, it is characterized in that：Using following supercharging device：
Including the first booster, the second booster, internal combustion unit, the compressor of the first booster passes through A row inlet manifolds
Internal combustion unit is connected through A row inlet manifold, the compressor of the first booster connects air, first by the first compressor air inlet machine pipe
The turbine of booster connects internal combustion unit by A row exhaust main through A row exhaust manifold, and the turbine of the first booster passes through first
Turbine exhaust pipe connects air, and the compressor of the second booster connects internal combustion engine by B row inlet manifold through B row inlet manifold
Group, the compressor of the second booster connects air by the second compressor air inlet machine pipe, and the turbine of the second booster is arranged by B and is vented
House steward connects internal combustion unit through B row exhaust manifold, and the turbine of the second booster connects air, A row by the second turbine exhaust pipe
By installing inlet manifold's communicating pipe so as to connect between inlet manifold and B row inlet manifolds, the first compressor air inlet machine pipe is arranged with B
By installing compressor communicating pipe so as to connect between inlet manifold, pass through between the first turbine exhaust pipe and B row exhaust mains
Install turbine communicating pipe so as to connect, between A row exhaust main and B row exhaust mains by install exhaust main communicating pipe so as to
Connection, installs the first supercharger air compressor intake valve on the first compressor air inlet machine pipe, the first supercharger air compressor air inlet valve position in
Air inlet pipe connects interface tube upstream with compressor, and the first booster turbine air bleeding valve is installed on the first turbine exhaust pipe, and first increases
Depressor turbine exhaust valve connects interface tube downstream with turbine in the first turbine exhaust pipe, is installed in first on A row inlet manifolds
Cooler, installs the second charge air cooler on B row inlet manifolds, compressor communicating valve and the 3rd charge air cooler are installed on compressor communicating pipe,
Turbine communicating valve is installed on turbine communicating pipe, is installed on the B row exhaust mains between turbine communicating pipe and exhaust main communicating pipe
Gas valve, air valve is installed on the B row inlet manifolds between compressor communicating pipe and inlet manifold's communicating pipe, is pacified on internal combustion unit
Dress gathers the speed probe and rack position sensor, speed probe and tooth bar of its rotating speed and fuel injector rack position respectively
Position sensor be all connected with control the first supercharger air compressor intake valve, compressor communicating valve, the first booster turbine air bleeding valve,
Turbine communicating valve, air valve, the switch controller of gas valve opening and closing；
(1) pre-rendered internal combustion generating unit speed, fuel injector rack position, the MAP of optimal boost mode three so that
After obtaining internal combustion generating unit speed, fuel injector rack position, optimal boost mode can be obtained by MAP；
(2) switch controller collection speed probe, rack position sensor signal obtain the internal combustion unit at current time
Rotating speed, fuel injector rack position, optimal boost mode is drawn by looking into MAP；
(3) stabilization time is preset, judges whether stabilization time exceedes setting value, if not less than continuing to use current optimal
Boost mode, if exceeding, return to step (2) updates optimal boost mode；
(4) judge whether the two optimal boost modes closed on change, if changing, boost mode switching species is known
Not, if not changing, step (2) is jumped to；Described boost mode switching species includes species 1- species 6：Wherein, species 1 is
Single turbocharger switches to the series connection of two turbocharger, species 2 for single turbocharger switch to two turbocharger it is in parallel,
Species 3 is that the series connection of two turbocharger switches to the parallel connection of two turbocharger, species 4 for the series connection of two turbocharger switches to list
Turbocharger, species 5 are two turbocharger for two turbocharger parallel connections switch to the series connection of two turbocharger, species 6
Parallel connection switches to single turbocharger；
(5) judge which species is boost mode switching species be：If species 1, then compressor communicating valve, whirlpool are opened simultaneously
Wheel communicating valve, and the first booster turbine air bleeding valve is simultaneously closed off, by delay time T1After close the first supercharger air compressor
Intake valve, jumps to step (2) afterwards；If species 2, then gas valve, delayed time τ are opened2After open air valve, afterwards
Jump to step (2)；If species 3, then the first supercharger air compressor intake valve, gas valve, the first booster whirlpool are opened simultaneously
Wheel air bleeding valve, and compressor communicating valve, turbine communicating valve are simultaneously closed off, by delay time T3After open air valve, jump afterwards
Go to step (2)；If species 4, then the first booster turbine air bleeding valve is opened, and simultaneously close off turbine communicating valve, by prolonging
Slow time τ4After open the first supercharger air compressor intake valve, and simultaneously close off compressor communicating valve, step is jumped to afterwards
(2)；If species 5, then open compressor communicating valve, turbine communicating valve simultaneously, and simultaneously close off the first supercharger air compressor
Air valve, gas valve, the first booster turbine air bleeding valve, by delay time T5After close air valve, step is jumped to afterwards
(2)；If species 6, then closing gas valve, by delay time T6After close air valve, step (2) is jumped to afterwards.
Advantage of the invention is that：
1st, the MAP that rotating speed, fuel injector rack position, boost mode three are made is improved.The present invention can be realized
In succession, two-stage supercharging switching, boost mode has three kinds, and (single turbocharger, the series connection of two turbocharger, two turbocharger are simultaneously
Connection).There was only single turbocharger and two turbocharger, two kinds of boost modes of parallel connection for sequential pressurizing, two-stage supercharging only has list
Turbocharger and two turbocharger are connected, and are both contained in three kinds of boost modes of the invention.Therefore, MAP in the present invention
In the presence of three regions and three handoff boundaries, and sequential pressurizing and two-stage supercharging only exist two regions and a switching side
Boundary.
2nd, the present invention has three handoff boundaries, therefore the species of pattern switching has 6 kinds, and sequential pressurizing and two-stage supercharging are equal
Only one of which handoff boundary, therefore all there was only both of which switching, and within present invention switching species is included.For phase
After supercharging, switch to the parallel connection of two turbocharger with single turbocharger and two turbocharger parallel connections switch to single turbine and increase
Two kinds of switch modes of depressor, correspond respectively to the switching species 2 and species 6 in the present invention.For two-stage supercharging, with single turbine
Booster switches to the series connection of two turbocharger and the series connection of two turbocharger switches to two kinds of switch modes of single turbocharger,
Correspond respectively to the switching species 1 and species 4 in the present invention.Also there is the present invention series connection of two turbocharger to switch to two turbines
Booster is in parallel and two turbocharger parallel connections switch to two turbocharger, two kinds of switch modes of series connection, respectively switches species
3 and species 5.
3rd, to avoid switching repeatedly near handoff boundary, stabilization time is introduced, after changing per suboptimum boost mode
Start timing, timing time recognizes whether optimal boost mode produces change again more than stabilization time, not right within stabilization time
It is identified.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram of the invention；
Fig. 2 is classical sequential pressurizing structural representation；
Fig. 3 is classical two-stage supercharging structural representation；
Fig. 4 is the inventive method flow chart.
Specific embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~4, by change be merged two kinds of pressurized constructions of sequential pressurizing and two-stage supercharging by the present invention,
And two kinds of control methods of supercharging form switching are proposed, and realize sequential pressurizing and two-stage supercharging is organically combined, make two kinds of superchargings
Form advantage and disadvantage are complementary.The present invention can be used for the pressure charging system of two and above exhaust-driven turbo-charger exhaust-gas turbo charger, with two exhaust gas turbines
As a example by booster, single turbocharger, two turbocharger parallel connections-sequential pressurizing ,-two grades of two turbocharger series connection are capable of achieving
Supercharging Three models.
Apparatus of the present invention structure includes basic supercharger air compressor intake valve 1, compressor communicating valve 2, basic booster pressure
Mechanism of qi 3, basic booster turbine 4, inlet manifold's communicating pipe 5, charge air cooler 6, exhaust main communicating pipe 7, speed probe 8, A row
Inlet manifold 9, inlet manifold 10, internal combustion unit 11, exhaust manifold 12, A row exhaust main 13, B row exhaust main 14, B arrange into
Gas house steward 15, rack position sensor 16, gas valve 17, air valve 18, switch controller 19, turbine communicating pipe 20, compressor
Communicating pipe 21, controlled boost device compressor 22, controlled boost device turbine exhaust pipe 23, controlled boost device compressor air inlet machine pipe 24,
Controlled boost device turbine 25, turbine communicating valve 26, basic booster turbine air bleeding valve 27, basic booster turbine blast pipe 28,
Basic supercharger air compressor air inlet pipe 29.
Illustrate the position relationship of critical piece of the present invention as shown in Figure 1：
Basic supercharger air compressor air inlet pipe 29 is connected with air and compressor communicating pipe 21 respectively, and compressor 3 is exported and A
Row inlet manifold 9 connects.The basic import of booster turbine 4 is connected with A row exhaust main 13, its blast pipe 28 respectively with air and
Turbine communicating pipe 20 connects.Controlled boost device compressor air inlet machine pipe 24 and atmosphere, compressor 22 export respectively with B row air inlets
House steward 15 connects with compressor communicating pipe 21.The import of controlled boost device turbine 25 is connected with B row exhaust main 14 and turbine respectively
Pipe 20 is connected, its blast pipe 23 and atmosphere.Basic supercharger air compressor intake valve 1 is arranged on compressor air inlet machine pipe 29,
In air inlet pipe 29 and the interface upstream of compressor communicating pipe 21.Basic booster turbine air bleeding valve 27 is arranged on turbine exhaust pipe 28
On, in turbine exhaust pipe 28 and the interface downstream of turbine communicating pipe 20.Compressor communicating pipe 21 two ends respectively with basic booster
Compressor air inlet machine pipe 29 is connected with B row inlet manifold 15.Turbine communicating pipe 20 two ends respectively with basic booster turbine blast pipe
28 connect with B row exhaust main 14.Inlet manifold's communicating pipe 5, two ends connected with A row inlet manifold 9 and B row inlet manifold 15 respectively
It is logical.Exhaust main communicating pipe 7, two ends connected with A row exhaust main 13 and B row exhaust main 14 respectively.Gas valve 17 is arranged on place
On B row exhaust main 14 between turbine communicating pipe 20 and exhaust main communicating pipe 7.Air valve 18 is arranged on and is in compressor
On B row inlet manifold 15 between communicating pipe 21 and inlet manifold's communicating pipe 5.
With reference to Fig. 1,2,3, sequential pressurizing, two-stage supercharging are organically combined and realize that both cut by the explanation present invention in structure
The design changed.Realizing the critical piece of sequential pressurizing includes：Basic booster, controlled boost device, gas valve and air valve；Realize
The critical piece of two-stage supercharging includes：Hiigh pressure stage booster, low-pressure stage booster, lower pressure stage turbine by-passing valve and low-pressure stage are calmed the anger
Machine by-passing valve.The present invention uses two boosters：Basic booster 3,4 and controlled boost device 22,25, each act as sequential pressurizing
Basic booster and controlled boost device in structure, act also as hiigh pressure stage booster and the low-pressure stage supercharging in two-stage supercharging structure
Device.Using air valve 18 and gas valve 17, the air valve and gas valve in sequential pressurizing structure are each acted as, act also as two grades of increasings
Hiigh pressure stage compressor by-passing valve and hiigh pressure stage turbine bypass valve in laminated structure.Using compressor communicating pipe 21 and turbine communicating pipe
20, equivalent to compressor communicating pipe and turbine communicating pipe in Fig. 3.Using basic supercharger air compressor intake valve 1, basic supercharging
Device turbine exhaust valve 27, compressor communicating valve 2, turbine communicating valve 26, air valve 17 and gas valve 18, valve 1, valve 27 open and
When valve 2, valve 26 are closed, equivalent to two-stage supercharging structure in Fig. 3, valve 17 is equivalent to the hiigh pressure stage turbine bypass valve in Fig. 3, valve 18
Equivalent to the hiigh pressure stage compressor by-passing valve in Fig. 3；When valve 2, valve 26 are opened and valve 1, valve 27 are closed, equivalent to phase in Fig. 2
After pressurized construction, equivalent to the gas valve in Fig. 2, valve 18 is equivalent to the air valve in Fig. 2 for valve 17.
The present invention realizes the control method of switching：
Step 1：The collection of switch controller 19 speed probe 8, the signal of rack position sensor 16.By rotating speed, fuel injector
The switching control MAP that rack position, optimal boost mode three are made, wherein rotating speed, fuel injector rack position are used as switching
Control the input signal of MAP.There is single turbocharger, the series connection of two turbocharger, the increasing of two turbines in switching control MAP
Depressor three kinds of boost modes of parallel connection, low discharge low-pressure ratio, high flow capacity low-pressure ratio, low discharge high pressure ratio are in respectively as internal combustion engine
Optimal boost mode during three kinds of various inlet demands.With the rotating speed, rack position signal that collect, by looking into switching control
MAP draws optimal boost mode.
Step 2：Judge whether stabilization time exceedes setting value t, if exceeding, the optimal boost mode obtained using step 1；
If not less than, keep the optimal boost mode of upper control circulation constant, jump to step 1.
Step 3：Judge whether current control circulation and the optimal boost mode of upper control circulation change, it is right if changing
Optimal boost mode switching species is identified；If not changing, step 1 is jumped to.
Step 4：Judgment model switches species, and performs switching control.Pattern switching species is divided into single turbine supercharging switching
Two turbocharger parallel connections-species 2, two turbochargings are switched to two turbocharger series connection-species 1, single turbocharger
Device series connection switch to two turbocharger parallel connections-species 3, two turbocharger series connection switch to single turbocharger-species 4,
Two turbocharger parallel connections switch to two turbocharger series connection-species 5, two turbocharger parallel connections and switch to single turbine supercharging
6 six kinds of device-species.Whether judgment model switching is species 1, if so, opening valve 2,26 simultaneously, and simultaneously closes off valve 27,
By delay time T1Valve 1 is closed afterwards, jumps to step 1；If it is not, determining whether species 2.If so, valve 17 is opened,
By delay time T2Valve 18 is opened afterwards, jumps to step 1；If it is not, determining whether species 3.If so, opening valve simultaneously
Door 1,17,27, and valve 2,26 is simultaneously closed off, by delay time T3Valve (18) is opened afterwards, jumps to step 1；If it is not,
Determine whether species 4.If so, opening valve 27, and valve 26 is simultaneously closed off, by delay time T4Valve 1 is opened afterwards, and
Valve 2 is simultaneously closed off, step 1 is jumped to；If it is not, determining whether species 5.If so, opening valve 2,26 simultaneously, and close
Valve 1,17,27, by delay time T5Valve 18 is closed afterwards, jumps to step 1；If it is not, being species 6, valve 17 is closed,
By delay time T6Valve 18 is closed afterwards, jumps to step 1.
Specific principle is as follows：
Consecutive pressurization system is successive successively according to the increase of internal-combustion engine rotational speed and moment of torsion using two exhaust-driven turbo-charger exhaust-gas turbo chargers
Input, parallel running, therefore the flow system flow scope is larger, pressure ratio is relatively low.Two Stage Turbocharging System uses two exhaust gas turbines
Booster puts into successively in succession according to the increase of internal-combustion engine rotational speed and moment of torsion, series operation, therefore the flow system flow scope is smaller,
Pressure ratio is higher.The internal combustion engine relatively wide for condition range, when in slow-speed of revolution middle-low load working condition, required air inflow and
Pressure ratio is relatively low, and the single turbine boost mode using sequential pressurizing and two-stage supercharging can meet air inlet requirement；When in the slow-speed of revolution
During high load capacity operating mode, required air inflow is less and pressure ratio is higher, and air inlet requirement can not be preferably met using sequential pressurizing, and uses
Two-stage supercharging can meet requirement；When in rotating speed running on the lower load high, required air inflow is more and pressure ratio is relatively low, using two
Level charging efficiency is relatively low and easy obstruction, and can meet requirement using sequential pressurizing and efficiency high is not blocked.Analyzed more than
Understand, the internal combustion engine wider for condition range respectively there are advantage and disadvantage using sequential pressurizing and two-stage supercharging, and can be with complementation.
Sequential pressurizing and two-stage supercharging are structurally similar, and simply series-parallel system is different.Therefore, sequential pressurizing and two-stage supercharging are melted
Close in a system, change according to engine conditions is switched over to sequential pressurizing and two-stage supercharging, can be preferably
Meet condition range air-intake of combustion engine demand wider.Basic supercharger air compressor intake valve 1, basic booster turbine air bleeding valve
27 are opened, and turbine communicating valve 26, compressor communicating valve 2, gas valve 17 and air valve 18 are closed, and are capable of achieving only to put into basic supercharging
Device 3,4 runs.Basic supercharger air compressor intake valve 1, basic booster turbine air bleeding valve 27, gas valve 17 and air valve 18 are opened
Open, turbine communicating valve 26, compressor communicating valve 2 are closed, be capable of achieving basic booster 3,4 and controlled boost device 25,22 and through transport
Row-sequential pressurizing pattern.Turbine communicating valve 26, compressor communicating valve 2 are opened, basic supercharger air compressor intake valve 1, basic increasing
Depressor turbine exhaust valve 27, gas valve 17 and air valve 18 are closed, and are capable of achieving basic booster 3,4 and controlled boost device 25,22
The aperture of series operation-two-stage supercharging pattern, adjustment gas valve 17 and air valve 18, it is possible to achieve between two-stage supercharging height is arbitrarily downgraded
Distribution and pressure ratio.Such function that can just realize in succession/two-stage supercharging switching, fusion sequential pressurizing and two-stage supercharging
Advantage, improves turbocharger efficiency, widens pressure charging system and internal combustion engine matching range, improves combustion engine powered performance, reduces
Soot etc. is discharged.
Rack position, the corresponding optimal boost mode of two variables of rotating speed are found out through emulation or experiment first, table is made
Switch controller is arrived in lattice storage.Handoff procedure stabilization time is set again.Boost mode of the present invention can be divided into single turbine increasing
Depressor, the series connection of two turbocharger, two turbocharger are in parallel three kinds, and pattern switching is divided into single turbine supercharging and switches to two turbines
Booster series connection-species 1, single turbocharger switches to two turbocharger parallel connections-species 2, the series connection of two turbocharger and cuts
Shift to two turbocharger parallel connections-species 3, the series connection of two turbocharger and switch to single turbocharger-species 4, the increasing of two turbines
Depressor parallel connection switches to two turbocharger series connection-species 5, two turbocharger parallel connections and switches to single turbocharger-species 6
Six kinds.To six kinds of states of mode switching set each valve switch of correspondence, order and time delays.When internal combustion engine 11 runs, turn
The rotating speed of internal combustion engine 11 and fuel injector rack position are converted to electric signal and passed by fast sensor 8 and rack position sensor 16 respectively
It is defeated by switch controller 19.Switch controller 19 judges the operating point of internal combustion engine 11 according to rotating speed size and rack position, by looking into
Table draws optimal boost mode.After optimal boost mode determines, judge whether optimal boost mode changes.If changed,
Judge that booster switches species.After switching species determines, according to the state of corresponding each valve switch, delay under the switching species
Time and order, switch controller 19 send actuator of the corresponding switching signal to each valve, and each valve is opened or closed by actuator
Door.When optimal boost mode is single turbocharger, switch controller 19 sends signal makes basic supercharger air compressor air inlet
Valve 1, basic booster turbine air bleeding valve 27 are opened by given order and time delay, connect turbine communicating valve 26, compressor
Port valve 2, gas valve 17 and air valve 18 are closed by given order and time delay, and controlled boost device cuts out system and stops work
Make.When optimal boost mode is two booster parallel running, switch controller 19 sends signal makes basic supercharger air compressor
Intake valve 1, basic booster turbine air bleeding valve 27, gas valve 17 and air valve 18 are opened by given order and time delay,
Make turbine communicating valve 26, compressor communicating valve 2 by given order and time delay closing, basic booster 3,4 and controlled increasing
Depressor 22,25 parallel runnings.When optimal boost mode is two booster series operation, switch controller 19 sends signal makes whirlpool
Wheel communicating valve 20, compressor communicating valve 2 are opened by given order and time delay, make basic supercharger air compressor intake valve 1,
Basic booster turbine air bleeding valve 27, gas valve 17 and air valve 18 are closed by given order and time delay, basic supercharging
Device 3,4 and controlled boost device 22,25 series operations.
Switch the control method of in succession/two-stage supercharging：
Step 1：The collection of switch controller 19 speed probe 8, the signal of rack position sensor 16.By rotating speed, fuel injector
The switching control MAP that rack position, optimal boost mode three are made, wherein rotating speed, fuel injector rack position are used as switching
Control the input signal of MAP.There is single turbocharger, the series connection of two turbocharger, the increasing of two turbines in switching control MAP
Depressor three kinds of boost modes of parallel connection, low discharge low-pressure ratio, high flow capacity low-pressure ratio, low discharge high pressure ratio are in respectively as internal combustion engine
Optimal boost mode during three kinds of various inlet demands.With the rotating speed, rack position signal that collect, by looking into switching control
MAP draws optimal boost mode.
Step 2：Judge whether stabilization time exceedes setting value, if exceeding, the optimal boost mode obtained using step 1；
If not less than, keep the optimal boost mode of upper control circulation constant, jump to step 1.
Step 3：Judge whether current control circulation and the optimal boost mode of upper control circulation change, it is right if changing
Optimal boost mode switching species is identified；If not changing, step 1 is jumped to.
Step 4：Judgment model switches species, and performs switching control.Pattern switching species is divided into single turbine supercharging switching
Two turbocharger parallel connections-species 2, two turbochargings are switched to two turbocharger series connection-species 1, single turbocharger
Device series connection switch to two turbocharger parallel connections-species 3, two turbocharger series connection switch to single turbocharger-species 4,
Two turbocharger parallel connections switch to two turbocharger series connection-species 5, two turbocharger parallel connections and switch to single turbine supercharging
6 six kinds of device-species.Whether judgment model switching is species 1, if so, opening valve 2,26 simultaneously, and simultaneously closes off valve 27,
By delay time T1Valve 1 is closed afterwards, jumps to step 1；If it is not, determining whether species 2.If so, valve 17 is opened,
By delay time T2Valve 18 is opened afterwards, jumps to step 1；If it is not, determining whether species 3.If so, opening valve simultaneously
Door 1,17,27, and valve 2,26 is simultaneously closed off, by delay time T3Valve (18) is opened afterwards, jumps to step 1；If it is not,
Determine whether species 4.If so, opening valve 27, and valve 26 is simultaneously closed off, by delay time T4Valve 1 is opened afterwards, and
Valve 2 is simultaneously closed off, step 1 is jumped to；If it is not, determining whether species 5.If so, opening valve 2,26 simultaneously, and close
Valve 1,17,27, by delay time T5Valve 18 is closed afterwards, jumps to step 1；If it is not, being species 6, valve 17 is closed,
By delay time T6Valve 18 is closed afterwards, jumps to step 1.
Claims (1)
1. it is changeable in succession/two-stage supercharging control method, it is characterized in that：Using following supercharging device：
Including the first booster, the second booster, internal combustion unit, the compressor of the first booster is arranged by A row inlet manifold through A
Inlet manifold connects internal combustion unit, and the compressor of the first booster connects air, the first supercharging by the first compressor air inlet machine pipe
The turbine of device connects internal combustion unit by A row exhaust main through A row exhaust manifold, and the turbine of the first booster passes through the first turbine
Blast pipe connects air, and the compressor of the second booster connects internal combustion unit by B row inlet manifold through B row inlet manifold, the
The compressor of two boosters connects air by the second compressor air inlet machine pipe, and the turbine of the second booster passes through B row exhaust mains
Internal combustion unit is connected through B row exhaust manifold, the turbine of the second booster connects air, A row air inlets by the second turbine exhaust pipe
By installing inlet manifold's communicating pipe so as to connect between house steward and B row inlet manifolds, the first compressor air inlet machine pipe and B row air inlets
By installing compressor communicating pipe so as to connect between house steward, by installing between the first turbine exhaust pipe and B row exhaust mains
Turbine communicating pipe so as to connect, between A row exhaust main and B row exhaust mains by install exhaust main communicating pipe so as to even
It is logical, the first supercharger air compressor intake valve is installed on the first compressor air inlet machine pipe, the first supercharger air compressor air inlet valve position is in entering
Tracheae connects interface tube upstream with compressor, and the first booster turbine air bleeding valve, the first supercharging are installed on the first turbine exhaust pipe
Device turbine exhaust valve connects interface tube downstream with turbine in the first turbine exhaust pipe, cold in installing first on A row inlet manifolds
Device, installs the second charge air cooler on B row inlet manifolds, compressor communicating valve and the 3rd charge air cooler, whirlpool are installed on compressor communicating pipe
Turbine communicating valve is installed on wheel communicating pipe, combustion is installed on the B row exhaust mains between turbine communicating pipe and exhaust main communicating pipe
Air valve, air valve is installed on the B row inlet manifolds between compressor communicating pipe and inlet manifold's communicating pipe, is installed on internal combustion unit
The speed probe and rack position sensor of its rotating speed and fuel injector rack position, speed probe and tooth bar position are gathered respectively
Put sensor and be all connected with the first supercharger air compressor intake valve of control, compressor communicating valve, the first booster turbine air bleeding valve, whirlpool
Wheel communicating valve, air valve, the switch controller of gas valve opening and closing；
(1) pre-rendered internal combustion generating unit speed, fuel injector rack position, the MAP of optimal boost mode three so that obtaining
After internal combustion generating unit speed, fuel injector rack position, optimal boost mode can be obtained by MAP；
(2) switch controller collection speed probe, rack position sensor signal obtain current time internal combustion generating unit speed,
Fuel injector rack position, optimal boost mode is drawn by looking into MAP；
(3) stabilization time is preset, judges whether stabilization time exceedes setting value, if not less than continuing to use current optimal supercharging
Pattern, if exceeding, return to step (2) updates optimal boost mode；
(4) judge whether the two optimal boost modes closed on change, if changing, boost mode switching species be identified,
If not changing, step (2) is jumped to；Described boost mode switching species includes species 1- species 6：Wherein, species 1 is single whirlpool
Wheel booster switches to the series connection of two turbocharger, and species 2 switches to the parallel connection of two turbocharger, species for single turbocharger
3 is that the series connection of two turbocharger switches to the parallel connection of two turbocharger, species 4 for the series connection of two turbocharger switches to single turbine
Booster, species 5 are two turbocharger in parallel for two turbocharger parallel connections switch to the series connection of two turbocharger, species 6
Switch to single turbocharger；
(5) judge which species is boost mode switching species be：If species 1, then compressor communicating valve, turbine are opened simultaneously and is connected
Port valve, and the first booster turbine air bleeding valve is simultaneously closed off, by delay time T1After close the first supercharger air compressor air inlet
Valve, jumps to step (2) afterwards；If species 2, then gas valve, delayed time τ are opened2After open air valve, redirect afterwards
To step (2)；If species 3, then the first supercharger air compressor intake valve, gas valve, the first booster turbine row are opened simultaneously
Air valve, and compressor communicating valve, turbine communicating valve are simultaneously closed off, by delay time T3After open air valve, jump to afterwards
Step (2)；If species 4, then the first booster turbine air bleeding valve is opened, and simultaneously close off turbine communicating valve, during by postponing
Between τ4After open the first supercharger air compressor intake valve, and simultaneously close off compressor communicating valve, step (2) is jumped to afterwards；If
It is species 5, then opens compressor communicating valve, turbine communicating valve simultaneously, and simultaneously close off the first supercharger air compressor intake valve, combustion
Air valve, the first booster turbine air bleeding valve, by delay time T5After close air valve, step (2) is jumped to afterwards；If planting
Class 6, then closing gas valve, by delay time T6After close air valve, step (2) is jumped to afterwards.
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| CN105317533A (en) * | 2015-11-12 | 2016-02-10 | 哈尔滨工程大学 | Opening control device for air valve of sequential supercharging system |
| CN105782141B (en) * | 2016-04-06 | 2017-10-03 | 哈尔滨工程大学 | A kind of two-stage supercharging diesel engine hydraulic device and control method based on exhaust gas utilization |
| DE102016106306B4 (en) | 2016-04-06 | 2023-08-10 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method of operating a supercharged internal combustion engine |
| CN107237686A (en) * | 2017-05-10 | 2017-10-10 | 哈尔滨工程大学 | Realize two-stage consecutive pressurization system structure and control method that overall performance improves |
| CN108757157A (en) * | 2018-04-03 | 2018-11-06 | 大连依勒斯涡轮增压技术有限公司 | A kind of consecutive pressurization system |
| CN112780402B (en) * | 2021-03-04 | 2022-04-05 | 哈尔滨工程大学 | Multi-point sequential air supplement device and method for high-power marine diesel engine |
| CN116857149B (en) * | 2023-09-04 | 2023-11-10 | 四川省机械研究设计院(集团)有限公司 | Pump package |
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