CN110520612A - The double-exhaust duct type turbocharged engine assembly of burning waste gas can be reintroduced back to - Google Patents
The double-exhaust duct type turbocharged engine assembly of burning waste gas can be reintroduced back to Download PDFInfo
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- CN110520612A CN110520612A CN201880023886.8A CN201880023886A CN110520612A CN 110520612 A CN110520612 A CN 110520612A CN 201880023886 A CN201880023886 A CN 201880023886A CN 110520612 A CN110520612 A CN 110520612A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/107—More than one exhaust manifold or exhaust collector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
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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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0242—Variable control of the exhaust valves only
- F02D13/0249—Variable control of the exhaust valves only changing the valve timing only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0257—Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened
-
- 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
- F02M26/01—Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
-
- 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
- F02M26/40—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Supercharger (AREA)
Abstract
The present invention relates to a kind of methods for controlling the exhaust of the Thermal Motor assembly (1) of motor vehicles, the motor vehicles include exhaust system, the turbine (2) of exhaust system receiving turbocharger, the exhaust system has the second air-flow for pressure release via the first air-flow of turbine and from second channel from first passage, first air-flow passes through turbine (2), the turbine accommodates the impeller for contained energy in partially recycled gas, which converges in the downstream of the impeller with the first air-flow in the case where bypassing impeller.During common open, the second air-flow is implemented to force pressurization, thus when engine speed is less than 3000 rpms at full capacity under conditions of or in effective mean pressure by force less than 106When Pascal under conditions of part load engine, the second air-flow is at least partly back at least one cylinder.
Description
Technical field
The present invention relates to a kind of engine assemblys comprising for the internal combustion engine and turbocharger of motor vehicles, this is
System includes two exhaust pipes, which has at least one Quick-acting control valve, so that at least one exhaust pipe is not
By impeller, which is used to recycle the energy in the turbine of turbocharger.
Background technique
Such exhaust system is connected to the outlet of turbocharged engine, the useless of burning generation within the engine is discharged
Gas, which is also referred to as engine with supercharger, advantageously but unrestricted, which is four-stroke gasoline hair
Motivation.
Fig. 1 is generally shown according to the pressurization of the especially current state-of-the-art technology described in document WO-A-2009/105463
Petrol engine assembly, the difference is that Quick-acting control valve 13 is shown in FIG. 1, it can be according to the present invention to the quick control
Valve processed is controlled, or carries out another control to the Quick-acting control valve according to the prior art.This engine assembly name
For VEMB, the abbreviation of the entitled English name " Valve Event Modulated Boost (valve actuation makes adjustments pressurization) " is turned over
Being translated into French is by the pressurization of engine distribution control.
The heating power internal combustion engine for forming a part of so-called engine distribution control booster-type assembly 1 has at least one vapour
Cylinder is three cylinders in Fig. 1.Each cylinder is equipped with an inlet valve and two exhaust valves.The choosing of these exhaust valves
Selecting property it is associated with the first or second exit passageway in each cylinder, and selectively open and close and exhaust valve phase
The channel of pass.
Each inlet valve associated with the entrance channel in cylinder is also such.Pass through row associated with exit passageway
Two exit passageways of valve orderly close-down and each cylinder of opening lead to different exhaust manifolds 5,7, and exhaust manifold is respectively
Dedicated vent pipes road 4,6 is supplied, as described below, two exhaust pipes 4,6 will not follow identical stroke.The first of each cylinder
Exit passageway is connected to the first manifold 5, and second outlet channel is connected to the second manifold 7.
Therefore, so-called engine distribution control supercharged engine assembly 1 includes so-called being vented by turbine 2
First pipe 4 and the so-called second pipe 6 for pressure release, the first pipe 4 is from the first manifold 5 for exhaust, this
For two pipelines 6 from the second manifold 7 for exhaust, it is logical which is connected respectively to first or second outlet
One in two groups of road group, the first or second exit passageway group is equipped with exhaust valve 19, the 19a being arranged for each cylinder.
First pipe 4 leads to the inlet face of the turbine 2 of turbocharger, and passes through the main buck channel inside turbine 2
Extend, which accommodates turbine wheel, which allows to recycle by containing in the discharge gas of main buck channel
Kinetic energy.Second pipe 6 is bypassed without entering turbine 2, but then in the downstream connection third pipeline 9 of turbine 2, the third pipe
Road 9 is located at the outside of turbine 2 and is connected to the exit face of turbine 2, with the discharge gas being discharged in main buck channel, the row
Out gas with the exchanged energy of the impeller of turbine.
Therefore, after turbine 2, there is only single and unique exhaust pipe 9,9 rows of being placed through of exhaust pipe
The abatement of pollution element 10 of gas system end.Therefore, start in this engine distribution control booster-type according to prior art
In machine assembly, second pipe 6 is not extended into turbine 2.
The function of the so-called first pipe 4 through gas turbine exhaust pipeline is, first row outlet stream is allowed to pass through turbine 2
And its energy regenerating revolving member of impeller form, to provide power to compressor 3.So-called relief pipeline and by with first
The exhaust of pipeline 4 differentiated with the first manifold 5 and it is mutually independent exhaust with the second manifold 7 come the function for the second pipe 6 supplied
It can be, allow to be different from and go out air-flow independently of the second row of the first air-flow around turbine 2, especially bypass turbine 2
Impeller, and the flow of exhaust amount of turbine 2 is therefore being reduced through and subtracting the second air-flow in total air flow
In the case of, allow turbine 2 from air-flow is all discharged.
This allows to exempt and/or control the power of turbine, just as negative for adjusting engine under normal operating conditions
As the overflow valve of lotus is done, overflow valve is the well known elements in the prior art for turbocharged engine.This is especially
Allow to avoid the surge phenomenon of engine, which is mainly that hot gas returns to air inlet.
For conventional turbocharged engine, by opening exhaust branch so that discharge gas no longer passes through turbine
And its gas is discharged to the pressure of the turbine of turbocharger in impeller, the exhaust valve limitation that may be present in turbine interior or outside
By force.It is thereby achieved that the limitation of the impeller speed to turbine, since the impeller of compressor and the impeller of turbine connect, because
Which also limits the velocities of rotation that impeller within the compressor is arranged for this, therefore also limit the compression of air inlet.
The overflow valve to adjust the discharge air-flow for passing through the turbine associated with turbine no longer needs tool, and there are two rows
The engine distribution control supercharged engine assembly of feed channel, the two exhaust pipes are respectively since respective exhaust manifolds start.
Therefore, this engine assembly is mentioned by reducing the surge of engine during the exhaust phase of four-stroke cycle
The efficiency of high cycle of engine, this has favorable influence for the consumption of engine.Therefore, turbine can preferably be controlled
The energy of recycling, it means that the load of engine is preferably managed.
Document FR-A-3032486 has substantially reproduced the feature of above-mentioned first prior art.The document discloses a kind of whirlpools
Turbine, the turbine lead to main buck channel by the inlet face of shell equipped with the shell surrounded, first pipe.This
As shown in Figure 2.
Different from first prior art, second pipe 6 leads at least one passed part 8 inside shell 2c, the branch
Part 8 gets around main buck channel, and Quick-acting control valve 13 is located in shell 2c.
Main buck channel and at least one passed part 8 converge at the exit face of shell 2c, and exhaust system includes whirlpool
Third pipeline 9 outside turbine 2, third pipeline 9 are connected to the exit face of turbine cylinder, so that discharge gas is discharged from turbine
Machine.
In general, compared with standard turbo engine with supercharger, engine distribution control supercharged engine assembly allow into
Reduce specified average pressure when row pressurization and therefore reduces consumption.It is connected to for the first pipe by gas turbine exhaust
Exhaust valve is first turned on, and then send discharge air-flow to turbine.
Once the energy of recycling is enough, the exhaust valve of the second pipe for pressure release exhaust is turned on, so that energy be sent
To the downstream of turbine, this also results in pressure and declines rapidly.In this way, can only pass through the first exhaust in each cylinder
Phase difference between door and second row valve controls the pressurization of engine.
Currently, the theory brings the gain in pressurizing area, but do not allow to improve the consumption in sub-load.With tradition
Turbocharged engine assembly compare, since the burning waste gas for being reintroduced back to engine is less, which is even increased.It is logical
Engine distribution control booster-type framework and its distribution curve are crossed, combustion chamber is managed in inlet valve and as pressure release is connected to second
Pressure possessed by the stage of one in two exhaust valves of the duaspiracle in road overlapping is less than in inlet valve and is connected to the
The pressure theoretically obtained in the case where the first row valve overlap of one pipeline.Therefore, back pressure is lower, and burning waste gas returns
The ability of engine reduces.In order to ensure adjusting engine load, it is therefore necessary to close air throttle more long, this can be such that consumption increases
It is more.
Summary of the invention
Therefore, basic problem to be solved by this invention is, according to the current operating condition of engine assembly, can to make to arrange
The burning waste gas of gas system can be recycled directly in exhaust system in a simple and efficient manner, and there are two exhaust system tools
Exhaust pipe, the exhaust pipe connect two exhaust valves of the same cylinder in the engine of engine assembly, the engine
Assembly is so-called engine distribution control supercharged engine assembly, and there are two exhaust pipes for tool, and this recycling is especially
Exhaust phase during the second row valve of engine is Chong Die with inlet valve occurs.
In order to realize the purpose, it provides a method according to the present invention, for controlling the Thermal Motor of motor vehicles
The exhaust of assembly, which includes exhaust system, which accommodates the turbine of turbocharger, the hair
Motivation includes at least one cylinder, which accommodates the piston for being connected to turning crankshaft, determine basis exclusively for Thermal Motor
The Engine full load of engine speed, at least one cylinder have access road and lead to the first and the of exhaust system
Two exit passageways, the access road are respectively equipped with the first and second exhausts equipped with inlet valve, first and second exit passageway
Door, first and second exhaust valve are logical in the position for opening or closing association channel, second according to the rotational angle of crankshaft
The opening in road has phase difference relative to the opening of first passage, and exhaust has the first air-flow and the second gas in the exit of engine
Stream, the first air-flow via turbine from first passage pass through turbine, and turbine accommodates impeller, which is used for part
Energy contained in gas recovery, and the second air-flow for pressure release from second channel bypass impeller in the case where
The downstream of the impeller is converged with the first air-flow, and the period that inlet valve and second row valve are opened jointly occurs in exhaust phase knot
Shu Shi, the method is characterized in that, during common opening time section, the second air-flow is implemented to force pressurization, thus starting
When the revolving speed of machine is less than 3000 rpms at full capacity under conditions of or in effective mean pressure by force less than 106Engine when Pascal
Under conditions of sub-load, the second air-flow is at least partly back at least one cylinder.
It has technical effect that, between inlet valve and second row valve overlap period, in the cylinder of engine or in which a gas
Stop the second air-flow across the so-called pipeline for pressure release, which bypasses turbine
Machine, the engine belong to a part of engine assembly.This allows to improve engine in stable state and transition state item
Reaction under part, especially at full capacity and under the transition condition of the slow-speed of revolution, or with less than 106The effective mean pressure of Pascal
Under the transition condition of strong corresponding relatively low sub-load.The gas of second air-flow is reintroduced into combustion chamber.
It can be accomplished that by Quick-acting control valve, the second air-flow is at least in exhaust phase when second row valve is opened
It is partly blocked in exhaust system and a part of air-flow is back to the combustion chamber of one or more cylinders, the quick control
Valve is arranged on the second pipe of exhaust system, or when necessary, and second pipe extension in the turbine is arranged
On.
By interrupting the second air-flow before top dead centre PMH and between inlet valve and second row valve overlap period, second
The pressure in second pipe that air-flow passes through increases suddenly, and which increase the pressure differences between inlet valve and second row valve, and
And be conducive to increase the ratio of the recycling gas in the combustion chamber of cylinder or multiple cylinders.
Advantageously, second air-flow in duaspiracle downstream is closed during common opening time section, the second air-flow is at least
A part by returning at least one cylinder with the associated second channel of duaspiracle, opening jointly by subsequent second air-flow
Period reopens after terminating.
Advantageously, during common opening time section, a part that first row goes out air-flow is introduced in the first and second gas
In second air-flow of passage downstream, the second air-flow is closed in the downstream that a part of the first air-flow introduces, the second air-flow and part
At least part of first air-flow with the associated second channel of duaspiracle by returning at least one cylinder.
In this embodiment, it is related to establishing connection between first row valve and second row valve, i.e., towards the second air-flow
Gas flow pipe road or gas flow pipe road equivalent, this allows still to open and be in and inlet valve in second row valve
It, can be utmostly by recycling according to the portion gas in the first air-flow of the cylinder of ignition order during the stage of overlapping
Ground increase makes burning waste gas follow bad ability again.
Advantageously, engine speed revolving speed be lower than 3000 rpms when at full capacity under conditions of, jointly open the phase
Between be simply turned off second air-flow in duaspiracle downstream, or in effective mean pressure by force less than 106Engine section is negative when Pascal
Under conditions of lotus, a part that first row goes out air-flow is introduced into the second gas in the first and second valve downstreams during common open
Stream, the second air-flow are closed in the downstream of introducing.
In the first configuration of these configurations, compared with the second configuration, the recycling of less burning waste gas is needed.
In two configurations, the recirculated air from the second air-flow is added to go out a part of gas of air-flow from first row.
The invention further relates to a kind of engine assembly, which includes Thermal Motor and exhaust system, the row
Gas system has the turbocharger turbine for implementing this method, which is connected to engine, the engine
Including at least one cylinder, which has access road and the first and second exit passageways, which is equipped with air inlet
Door, first and second exit passageway are used to be discharged the exhaust gas for generation of burning from engine, first and second exit passageway
It is respectively equipped with first row valve and second row valve, which is used to open associated channel and successively closes
Associated channel, the system include opening since the first valve by the first pipe of gas turbine exhaust and from duaspiracle
The second pipe for pressure release to begin, turbine is inside it equipped with main buck channel, equipped with turbine in main buck channel
Impeller, first pipe lead to main buck channel, and second pipe bypasses the impeller of turbine, which is characterized in that,
Exhaust system includes the device for making the pressure in second pipe force to increase, which is controlled by control unit, the control
Unit processed has detection device and estimation or a measuring device, which is used to detect the common of inlet valve and duaspiracle
It opens, the estimation or measuring device are for estimating or measuring strong effective mean pressure, the sub-load of Thermal Motor and engine
Revolving speed.
The main problem that the present invention solves is in effective mean pressure by force less than 106The feelings of the sub-load of Pascal's (10 bars)
Consumption loss under condition, the consumption loss are associated with engine distribution supercharged engine.The present invention is by overcoming underload
Under loss and the slow-speed of revolution when loss at full capacity and allow the gain in test period and normal use to maximize.
The present invention especially allows a possibility that restoring carbon dioxide in the case where relatively low sub-load, in this feelings
Under condition compared with model engine, this engine with supercharger has lost carbon dioxide.To sum up, having proposed by the present invention change
Engine distribution supercharged engine into method allows really to spread to entire engine art, and makes to consume gain maximum
Change.
Advantageously, second pipe includes Quick-acting control valve, which opens jointly in inlet valve and second row valve
The discharge air-flow in second pipe is interrupted during opening, which is controlled by control unit, which includes actuating
Device, the actuation means for during the opening according to being estimated by estimation device or measure that the effective mean pressure that obtains is strong, hair
Motivation revolving speed and sub-load activate Quick-acting control valve.
In this case, any without increasing in the distribution control supercharged engine of engine according to prior art
Thing just can increase the pressure in the so-called second pipe for pressure release.Quick-acting control valve may be already present on this start
On machine, it is advantageously disposed in the shell of turbine.But the Quick-acting control valve is controlled in different ways by control unit.
It is known that used control valve closes one in the first and second pipelines.However, this is in inlet valve and second row
Asynchronous with the exhaust phase of engine when valve overlap, this does not allow to control the second air-flow, and does not allow to make second gas
At least part in the gas of stream is recycled to the combustion chamber of cylinder or multiple cylinders, which passes through the engine
The second outlet channel of at least one cylinder is discharged.Using Quick-acting control valve, by planting in a control unit
Enter software appropriate, the closing of valve can be completed within the overlapping time of inlet valve and second row valve.
Advantageously, for turbine equipped with the shell surrounded, second pipe leads at least one point of the enclosure interior
Road part, the passed part bypass main buck channel, which is arranged in the shell or second pipe includes whirlpool
The pavement branch sections of turbine, Quick-acting control valve are supported by the pavement branch sections.
Advantageously, Quick-acting control valve is triple valve, and second pipe has the opening for leading to first pipe, the triple valve
There are three types of positions for tool: the first closed position is open by closing, and second pipe keeps close relative to the air-flow from first pipe
Envelope；The second position is open by opening, and first pipe is connected to second pipe and the fraction of the discharge gas of first pipe
Second pipe is flowed to, in the downstream that first pipe is connected to second pipe, second pipe is closed；And third open position,
Second pipe keeps sealing relative to the air-flow from first pipe, which is closed.
Advantageously, first passage is connected to the first manifold for exhaust, while second outlet channel is connected to for arranging
Second manifold of gas, first pipe is from the first manifold and second pipe comes from the second manifold, which includes from first
Manifold to the second manifold circulation duct, control unit have actuation means, the actuation means according to by estimation device estimate or
The strong effective mean pressure obtained, sub-load and engine speed are measured to open or close the valve in circulation duct.
Detailed description of the invention
By reading the detailed description referring to the attached drawing provided as non-limiting example, other of the invention are special
Sign, objects and advantages will become apparent from, in the accompanying drawings:
- Fig. 1 is the schematic diagram of the first engine distribution control booster-type turbocharged engine assembly, the engine assembly
Including having the exhaust system there are two exhaust pipe, second pipe is located at turbine foreign and has the first reality according to the present invention
The fast-acting modulator valve of example is applied, which, which forms, forces supercharging device, which is used in inlet valve and institute
Meaning increases the pressure in second pipe for forcing between the second row valve overlap period of pressure release, to be less than in engine speed
By force less than 10 under 3000 rpms of full-load conditions or in effective mean pressure6The part load engine condition of Pascal
Under, the part of the second air-flow is back at least one cylinder.
- Fig. 2 is the schematic diagram of the second engine assembly according to another embodiment of the present invention, which includes
Tool is there are two the exhaust system of exhaust pipe, the two exhaust pipes pass through turbine, and second pipe has according to this hair
The Quick-acting control valve of bright first embodiment.
- Fig. 3, Fig. 4 and Fig. 5 are directed to turbocharger with an exhaust pipe respectively, there are two exhaust pipes for tool
Assembly and with force supercharging device double-exhaust pipeline assembly, show the pressure curve changed with crankshaft angles, should
Supercharging device is forced to be used to force to increase in second pipe between inlet valve and the so-called second row valve overlap period for pressure release
Pressure, the last one attached drawing is consistent with the present invention.
- Fig. 6 a, Fig. 6 b and Fig. 6 c show the various positions that triple valve is closed and opened, and in inlet valve and so-called use
For making the pressure in second pipe force increased device between the second row valve overlap period of pressure release, the triple valve is with to the utmost
Engine distribution control supercharged engine assembly according to the present invention.
- Fig. 7 is shown has the curve at full capacity that engine torque is given according to engine speed in engine assembly,
The engine assembly is according to the present invention and equipped with triple valve shown in Fig. 6 a, Fig. 6 b and Fig. 6 c.
Specific embodiment
It should be noted that attached drawing is given as examples rather than limiting the invention.Attached drawing, which is formed, to be promoted to understand this hair
The schematic diagram of bright principle, the not necessarily ratio of practical application.Particularly, the size of various elements shown in does not represent reality
Border.
Hereinafter, term upstream and downstream, position in exhaust system are chosen along the flow direction of gas discharge engine
In engine downstream element compared be located at the components upstream another element farther out from engine.So-called engine assembly
Including Thermal Motor and for admitting air into engine and from the auxiliary device of engine exhaust gas, turbocharger
Also a part of engine assembly is constituted, turbine includes in the exhaust system of engine assembly.
Referring to Figures 1 and 2, the usual feature of turbocharged engine, more particularly engine distribution control will be described
The feature of supercharged engine, but these features are not required implementation of the invention.
Usual turbine 2 drives compressor 3 by axis connection to compressor 3, and fresh air is across compressor 3 with to hair
The air that motivation supply compressor 3 is compressed.Therefore, in the exit of compressor 3, the air of referred to as pressurized air passes through confession
Gas pipeline and be introduced to charger-air cooler 25, with the cooling air from compressor 3.Solar term are additionally provided on the pipeline
Valve 26, the air throttle 26 adjust the air mass flow in motor intake manifold, which forms the air inlet of engine.
Usual engine assembly equipped with the recirculation line for being recycled to engine intake for making to be discharged gas,
Referred to as RGE pipeline, such pipeline marks in Fig. 1 is.In fact, for spark ignition Thermal Motor and compression ignition
It is known that discharge gas is made to be recycled to the air inlet of Thermal Motor to reduce the row of nitrogen oxides for Thermal Motor
It puts.This system refers to the English acronym EGR of " Exhaust Gas recirculation (exhaust gas recycling) " also with generation
And it is known, which means the recycling of discharge gas.
RGE pipeline 11 has outlet 12 on one element in two exhaust pipes, to absorb the discharge of a part
Gas, the element be, for example, be used to be vented or across turbine 2 the second manifold 7.RGE pipeline 11 includes cooler 23, due to
Discharge gas across the pipeline 11 is very warm, so the cooler 23 is for cooling down these gases.RGE pipeline 11 is supplied at it
The upstream end of the compressor 3 of gas leads to air inlet.RGE pipeline 11 equipped with referred to as RGE valve valve 24, to open or close
The gas circulation for leading to air inlet, advantageously, moves direction along stream of recycled gases, the valve 24 is in the downstream of RGE cooler 23.
For any type of RGE pipeline 11, since gas recovery is reintroduced back to inlet manifold by RGE pipeline 11
Reduce hot transmitting, therefore, the air inlet that discharge gas is recycled to Thermal Motor allows to improve the thermodynamics effect of engine
Rate.When engine is associated with turbocharger, this recycling can also allow for reducing enrichment related with delivery temperature
And reduce surge loss.
Referring to Figures 1 and 2 to supplement the label of the missing in Fig. 3, Fig. 4 and Fig. 5, be directed to has an exhaust pipe respectively
Turbocharging assembly distributes the double-exhaust duct type assembly of control supercharged engine with engine and in air inlet
For making the pressure in second pipe force the double of increased device between door and the so-called second row valve overlap period for pressure release
Exhausting pipeline type assembly, Fig. 3, Fig. 4 and Fig. 5 show the pressure with P (bar) for unit changed with crankshaft angles ANGLE VIL
Strong curve, the last one attached drawing 5 represent turbocharging assembly pressure obtained according to the present invention.
Between top dead centre PMH and lower dead center PMB, it is exhausted between two scheduled crankshaft angles ANGLE VIL
Stage.During the exhaust phase, first row valve 19 included by cylinder or each cylinder and second row valve 19a distinguish root
It is opened according to valve stroke S1 and S2, except Fig. 3, only has an exhaust valve in the figure.
For Fig. 4 and Fig. 5, valve stroke S1 of the valve stroke S2 of second row valve 19a relative to first row valve 19
There is phase delay.When first row valve 19 and second row valve 19a are opened, the first and second exit passageways are opened respectively, and
And when first row valve 19 and second row valve 19a are closed, the first and second exit passageways are closed respectively.
Be vented in the exit of engine tool there are two exhaust stream, so-called the first air-flow for exhaust from this at least one
The first passage of a cylinder, which, which flows through, passes through turbine 2 by impeller, and the impeller is for partially recycled in turbine 2
Energy contained in internal discharge gas, so-called the second air-flow for pressure release is from the second outlet of at least one cylinder
Channel, around impeller and the outside or the inside by turbine as shown in Figure 2 by passing through turbine as shown in Figure 1
In the case of, which converges in the downstream of the impeller with the first air-flow.
In Fig. 3, there is overlapping C between the single exhaust valve that lift is labeled as S1 labeled as the inlet valve and lift of SA
Soup is overlapped C soup and is formed together by inlet valve and second row valve 19a for Fig. 4 and Fig. 5, second row valve 19a's
Lift is labeled as S2.
In Fig. 3, when intake and exhaust valves form overlapping C soup, there is overlapping pressure difference △ P, be greater than Fig. 4
Overlapping pressure difference △ P between middle inlet valve and second row valve 19a.In Fig. 3, at the end of exhaust, inlet valve is opened,
And since drain pressure PS1 is much larger than intake air pressure PA, this causes burning waste gas to be reintroduced into the combustion chamber of cylinder.
Burning waste gas, which is reintroduced back to cylinder, to be allowed through a certain amount of burning waste gas for being reintroduced back to cylinder chamber
It is not to control a part of engine load by air throttle, is lost and with reducing surge by diluting effect limitation combustion chamber
Heat transmitting.
In Fig. 4, the so-called second row valve 19a for pressure release is opened at the end of exhaust phase.Due to being exclusively used in
The pressure PS2 of two exhaust valves is smaller, and therefore, overlapping pressure difference △ P is much smaller than the overlapping pressure difference △ P in Fig. 3.Burning waste gas weight
The new ability for introducing combustion chamber reduces.Therefore, it is necessary to control load by engine air throttle, and in combustion chamber of air cylinder
In heat transmitting on do not utilize diluting effect.
The present invention relates to a kind of method for controlling the exhaust of the Thermal Motor assembly 1 of motor vehicles, the engines
It is engine distribution control supercharged engine.This engine includes exhaust system, which accommodates turbocharger
Turbine 2, which includes at least one cylinder, which accommodates the piston for being connected to turning crankshaft.
For Thermal Motor, engine is determined generally according to engine speed at full capacity.This is at full capacity
It specific to Thermal Motor, and is engine made function and achievable maximum work under the revolving speed under some revolving speed
Ratio.Curve is shown in FIG. 7 at full capacity, and hereinafter will more accurately describe.
Effective mean pressure is the ratio between the function that engine provides in one cycle and engine displacement by force, is allowed
Calculate the load of engine.Effective mean pressure is strong or PME is obtained by following formula:
Wherein C is torque,It is the rotational angle of engine in one cycle, is indicated with radian, i.e., for two punchings
Journey engine is 2 п, or is 4 п for four-stroke engine, and V is engine displacement.For given engine, PME and hair
The torque of motivation is proportional, and therefore depends on the operating point of engine, which can be by the revolving speed and load of engine
It determines.
Cylinder or each cylinder include the access road equipped with inlet valve and lead to exhaust system first outlet it is logical
Road and second outlet channel, first and second exit passageway are respectively equipped with first row valve 19 and second row valve 19a, should
First row valve 19 and second row valve 19a are according to the rotational angle of crankshaft and in the position for opening or closing its related channel program
It sets, the opening of second channel has phase difference relative to the opening of first passage.
Therefore, exhaust at engine export have the first air-flow and the second air-flow, from first passage via turbine
First air-flow of machine passes through turbine 2, and turbine 2 accommodates the impeller for contained energy in partially recycled gas, and comes from
The second air-flow for pressure release of second channel converges at the downstream of the impeller with the first air-flow in the case where bypassing impeller.
In the embodiment in figure 1, pass through the outside of turbine 2 by the second air-flow of second pipe 6, and in Fig. 2, the second air-flow is worn
Branch 8 is crossed, impeller of the branch 8 around turbine 2 and the inside positioned at turbine 2.
During inlet valve and duaspiracle 19a are opened jointly, which corresponds to occurs at the end of exhaust phase
Valve overlap C soup, in order to increase overlapping pressure difference △ P, the present invention proposes during common open, forcing to increase by the
The pressure of two air-flows, so that a part of the second air-flow returns at least one cylinder in the case of at least two in the accompanying drawings
In.
The first situation in attached drawing is realized under full-load conditions when engine speed is lower than 3000 rpms,
The first situation marks in Fig. 7.Second situation in attached drawing is in effective mean pressure by force less than 106It is sent out when Pascal
It is realized under motivation part load condition, second situation marks in Fig. 7 is.In fact, both of these case be most disadvantageous in by
Burning waste gas is reintroduced back to the combustion chamber of cylinder or each cylinder.
According to the present invention, a greater amount of for engine distribution control supercharged engine assembly compared with the existing technology
Burning waste gas be reintroduced into the combustion chamber of cylinder or each cylinder.
Referring to Fig. 5, referring concurrently to Fig. 1 and Fig. 2, the opening curves figure of fast-acting modulator valve 13 is shown in the top of the figure, fastly
Fast regulating valve 13, which closes 100%, indicates that the fast-acting modulator valve 13 is closed, and fast-acting modulator valve 13 closes 0% expression Quick-acting control valve
13 open, it can be seen that the pressure when second pipe 6 that label is ferm in Fig. 5 is closed is higher than not closed pressure
PS2, pressure PS2 are shown in FIG. 4 and further show in Fig. 5.
Therefore, the overlapping pressure difference △ P in Fig. 5 is greater than the overlapping pressure difference △ P in Fig. 4.Therefore, the present invention allows
The valve overlap C soup stage increases the pressure in the second pipe 6 for pressure release, and which increase in the cylinder of engine or every
Burning waste gas is reintroduced back in the combustion chamber of a cylinder, and is reduced caused by the control as engine air throttle to load
Heat transmitting in the combustion chamber of surge loss and cylinder or each cylinder.
In advantageous embodiment according to the method for the present invention, second air-flow in the downstream duaspiracle 19a can opened jointly
It closes during opening, is then reopened after the period opened jointly terminates.After carrying out this closing, the second air-flow
At least part can not flow into again in the rest part of the exhaust line at the downstream duaspiracle 19a, and can by with
The associated second channel of duaspiracle 19a and as being reintroduced back to the burning waste gas of cylinder or each combustion chamber of air cylinder back to should
At least one cylinder.
It, can be by first row outlet during common open in as the embodiment supplemented first embodiment
A part of stream is introduced into second air-flow in the first valve 19 and the downstream duaspiracle 19a, and the second air-flow is in the first air-flow
A part introduce downstream at be closed.
Therefore, at least part of the second air-flow and first air-flow of part can be by associated with duaspiracle 19a
Second channel returns at least one cylinder.Compared with first embodiment, more burning waste gas are introduced into the embodiment
Combustion chamber, and therefore the embodiment is suitable for the operating condition of specific engines, and specific engines needs more draw again
The burning waste gas entered.
Referring in particular to Fig. 7, the figure shows the curves at full capacity of engine assembly according to the present invention, wherein with ox rice
It is provided for the engine torque C (N.m) of unit according to engine speed N (t/mn).It is lower than 3000 revolutions per minute in engine speed
When clock under full-load conditions, which is indicated in Fig. 7 by the region labeled as A, during the period opened jointly, is only closed
Close second air-flow in the downstream duaspiracle 19a, that is to say, that not by be previously the first air-flow a part air-flow introduce second
Air-flow.
Conversely, in the case where effective mean pressure is strong less than 106When Pascal under the conditions of part load engine, the condition
It is indicated in Fig. 7 by the region labeled as B, during the period opened jointly, under first 19 and duaspiracle 19a
A part of first air-flow is introduced the second air-flow by trip, and the second air-flow is closed in the downstream of introducing.
In Fig. 7, lower curve is sub-load curve, and below the curve, a part of the first air-flow is drawn in implementation
Enter the second air-flow.In Fig. 7, region C is at full capacity or part load region, wherein the gas obtained with respect to the prior art
Stream, it is not necessary to adjust the air-flow.In this region, the operation of engine according to the present invention distribution control supercharged engine with
Engine operation in the prior art is identical.
In order to implement to propose a kind of engine assembly 1 according to the method for the present invention comprising engine distribution control increases
Pressure type Thermal Motor and exhaust system with turbocharger turbine 2.Exhaust system is connected to the outlet of engine, should
Engine includes at least one cylinder, which has access road and first outlet channel and second outlet channel, this enters
Mouth channel is used to be discharged the useless of generation of burning in engine equipped with inlet valve, the first outlet channel and second outlet channel
Gas, the first outlet channel and second outlet channel are respectively equipped with first row valve 19 and second row valve 19a, the first exhaust
19 and second row valve 19a of door opens associated channel and is successively turned off, which leads to exhaust
System.
The system includes from the first valve 19 via the first pipe 4 of the exhaust of turbine 2 and from duaspiracle
The second pipe 6 for pressure release of 19a, turbine 2 are equipped with whirlpool inside it equipped with main buck channel in main buck channel
The impeller of turbine, and first pipe 4 leads to main buck channel.Second pipe 6 bypasses the impeller of turbine 2, as shown in Fig. 2,
The second pipe 6 is extended in the inside of turbine 2 by shunt tubes 8, or as shown in Figure 1, the second pipe 6 is bypassed from outside
Turbine 2.
According to the present invention, exhaust system includes for making the pressure in second pipe 6 force raised device, and the device is logical
Cross control unit control.The control unit has detection device, estimation or measuring device, and the detection device is for detecting inlet valve
With the common unlatching of duaspiracle, the estimation or measuring device are strong, Thermal Motor for estimating or measuring effective mean pressure
Sub-load and engine speed.The control unit can be the command control unit of Thermal Motor.
In the first embodiment of the present invention, by Quick-acting control valve 13, the second air-flow is during common open second
The downstream of valve 19a is closed, and is then switched on again.Quick-acting control valve 13 can be controlled by control unit, the control
Unit includes actuation means, the actuation means strong, sub-load and hair according to the effective mean pressure estimated by estimation device
Motivation revolving speed and activate Quick-acting control valve during the opening.Quick-acting control valve 13 can be in inlet valve and second row valve 19a
The discharge air-flow in second pipe 6 is interrupted during common unlatching.
Two non-limiting positions of the Quick-acting control valve 13 are shown in fig. 1 and 2 respectively.Quick-acting control valve 13 can be with
The outside of turbine 2 is set, and second pipe bypasses turbine 2.This is shown in FIG. 1.In a second embodiment, quickly control
Valve 13 can be set in turbine 2.This is shown in FIG. 2.
Turbine 2 has the shell 2c surrounded, and second pipe 6 at least leads to the passed part 8 inside shell 2c, should
Passed part 8 bypasses main buck channel.As shown in Figure 2, Quick-acting control valve 13 is located in shell 2c, or as shown in Figure 1,
Two pipelines 6 bypass turbine 2 in the case where including the pavement branch sections portion of turbine 2, and Quick-acting control valve 13 is by the pavement branch sections portion branch
It holds.
Referring specifically to Fig. 6 a, Fig. 6 b and Fig. 6 c, consider simultaneously for the numeral mark lacked in first three attached drawing Fig. 1 and
Fig. 2, in the embodiment of Quick-acting control valve 13, which can be triple valve, but this is not limiting.Completely
Can realize different control models by two two-port valves, the two all in exhaust manifold, one in manifold and one
It is a in turbine cylinder or the two are all in turbine cylinder.
In the drawings, triple valve is arranged on second pipe 6 in the downstream of turbine 2, which is located at whirlpool
The outside of turbine 2, the triple valve are labeled as 13 in fig. 1 and 2, and unmarked in Fig. 6 a to Fig. 6 c is 13, wherein only marking
Specific position 13a, 13b and 13c out.This is not limiting, and the outer vicinity in turbine 2 can be set in the triple valve
Except other positions, such as the inside of turbine 2 is set, is connected to the branch of second pipe around the impeller of turbine 2
Part 8 or in associated second manifold 7 of second pipe 6 or the second manifold 7 downstream and in third pipeline 9
Upstream.In Fig. 6 a to Fig. 6 c, the arrow inside pipeline 4 and 6 indicates air-flow flowing.
Second pipe 6 has the opening for leading to first pipe 4, and the gas from first pipe 4 enters second pipe 6, leads to
It crosses and closes the opening, the second pipe 6 in the first closed position keeps sealing relative to the air-flow from first pipe 4.
This shows in Fig. 6 a.The configuration can be used for region A shown in Fig. 7, and wherein total load or average load are higher than 106
Pascal and engine speed is relatively low, such as less than 3000 rpms.The torque being shown in FIG. 7 labeled as Z1 increases
Long, this torque increases to be realized by closing and therefore deactivating the second row bleed flow flowed in second pipe 6.Attached drawing mark
Remember that 13b indicates that control valve closes second pipe 6.
Fig. 6 b shows the second position that first pipe 4 leads to second pipe 6, and by opening opening makes that gas is discharged
The fraction of body flows into second pipe 6 from first pipe 4.Company of the second pipe 6 between first pipe 4 and second pipe 6
The downstream of logical part is closed, this is labeled as 13b in the figure, and opens the channel from first pipe 4 to second pipe, this
It is labeled as 13a in the figure.
Air-flow is flowed based in part on shown arrow.The configuration can be used for region B shown in Fig. 7, wherein for from
Low to high a wide range of engine speed, sub-load is less than 106Pascal.
Finally, Fig. 6 c shows the third open position of the second pipe 6 labeled as 13c, at the same the second pipe 6 due to
Opening is closed and keeps sealing relative to the air-flow from first pipe 4.The configuration can be used for region C shown in Fig. 7, wherein
Average portion load is higher than 106Pascal, and in the case where being greater than 3000 rpms engine speed from as low as
High scope is very wide.
In another preferred embodiment of the invention not shown in the figure, first passage may be coupled to for exhaust
One manifold 5, and second outlet channel may be coupled to the second manifold 7 for exhaust, first pipe 4 from the first manifold 5 and
Second pipe 6 comes from the second manifold 7.These are characterized in the feature that engine control supercharged engine typically exhibits.
According to this preferred embodiment of the invention, exhaust system may include the circulation from first the 6 to the second manifold of manifold 7
Channel.Control unit may include actuation means, be used for the strong, portion according to estimation device estimation or the effective mean pressure measured
Divide load and engine speed and opens or closes the valve in circulation passage.The valve can be in various open positions or closing
It is steered, or can be driven between closed position or open position between position.
Another embodiment of the present invention is to determine the size of the connector between first pipe 4 and second pipe 6, the company
Fitting is passively and to continue existing.The connector can be sized to farthest improve cylinder or each cylinder
Combustion chamber in burning waste gas recyclability, especially and be arranged under relatively low sub-load as previously described
At the performance loss farthest reduced when Quick-acting control valve is closed.
Since control valve 13 can be during cycle of engine during the opening of exhaust valve 19a or each exhaust valve 19a
It opens, therefore, which is so-called Quick-acting control valve, this needs control valve 13 that can quick start very much, for example, about
For cycle of engine time divided by number of cylinders (be equipped with there are three cylinder engine on be 10ms).
Therefore, the operation of the Quick-acting control valve is different from the operation for any control valve being integrated in second pipe 6, the collection
It is opened or closed at exhaust phase is not followed to the control valve in second pipe 6 to carry out it.This kind of control according to prior art
Valve processed can open or close, without as required by Quick-acting control valve 13 as used in the present invention with fast actuating
Device is associated.On the contrary, in the present invention, Quick-acting control valve 13 is associated with mechanical, hydraulic, electrical or electromagnetism fast actuator.
Quick-acting control valve 13 according to the present invention can have any appropriate form, the such as, but not limited to shape of plug valve
Shape.
The present invention is not limited to the description being merely given as examples and the embodiments shown.
Claims (9)
1. a kind of method for controlling the exhaust of the Thermal Motor assembly (1) of motor vehicles, the engine assembly include
Exhaust system, the exhaust system accommodate the turbine (2) of turbocharger, and the engine includes at least one cylinder, institute
It states cylinder and accommodates the piston for being connected to turning crankshaft, determined exclusively for Thermal Motor completely negative according to the engine of engine speed
Lotus, at least one described cylinder has access road and leads to the first and second exit passageways of the exhaust system, described
Access road equipped with inlet valve, first and second exit passageway be respectively equipped with the first and second exhaust valves (19,
19a), first and second exhaust valve is according to the rotational angle of crankshaft and in the position for opening or closing association channel, institute
Stating the opening of second channel has a phase difference relative to the opening of the first passage, and exhaust has the at the engine export
One air-flow and the second air-flow, first air-flow via turbine from the first passage pass through the turbine (2),
The turbine accommodates impeller, and the impeller comes from the second channel for energy contained in partially recycled gas
Second air-flow for pressure release bypass the impeller in the case where the impeller downstream and first air-flow
Converge, the period that the inlet valve and the second row valve (19a) are opened jointly occurs at the end of exhaust phase, special
Sign is, during the common opening time section, implements to force pressurization to second air-flow, thus small in engine speed
When 3000 rpms at full capacity under conditions of or in effective mean pressure by force less than 106Part load engine when Pascal
Under the conditions of, second air-flow is at least partly back at least one described cylinder.
2. the method according to claim 1, wherein closing described second during the common opening time section
Second air-flow in the downstream valve (19a), at least part of second air-flow with the duaspiracle (19a) by closing
The second channel of connection returns at least one described cylinder, and subsequent second air-flow is in the common opening time section knot
It is reopened after beam.
3. according to the method described in claim 2, it is characterized in that, during common opening time section, the first row
A part of air-flow is introduced in second air-flow in first and second valve (19,19a) downstream out, and described second
Air-flow is closed in the downstream that a part of first air-flow introduces, and second air-flow and the first air-flow of the part are extremely
Few a part with the associated second channel of the duaspiracle (19a) by returning at least one described cylinder.
4. the method according to any one of Claims 2 or 3, wherein when engine speed is lower than 3000 rpms
Under conditions of at full capacity, only carried out in the downstream of the duaspiracle (19a) to second gas during the common unlatching
The closing of stream, or in the effective mean pressure by force less than 106When Pascal under conditions of part load engine, described total
A part that the first row goes out air-flow is introduced into institute in the downstream of first and second valve (19,19a) with during opening
The second air-flow is stated, second air-flow is closed in the downstream of introducing.
5. a kind of engine assembly (1) comprising Thermal Motor and exhaust system, the exhaust system have for implementing root
According to the turbine (2) for belonging to turbocharger of method described in any one of preceding claims, the exhaust system connection
To the engine, the engine includes at least one cylinder, and the cylinder goes out with access road and first and second
Mouth channel, the access road is equipped with inlet valve, and first and second exit passageway is for being discharged from the engine
Burn the exhaust gas generated, and first and second exit passageway is respectively equipped with the first and second exhaust valves (19,19a), described
First and second exhaust valves are used to open associated channel and successively close associated channel, and the system comprises from described first
The first pipe (4) for being vented by the turbine (2) and opened from the duaspiracle (19a) that valve (19) starts
The second pipe (6) for pressure release to begin, inside it equipped with main buck channel, turbine wheel holds the turbine (2)
Be contained in the main buck channel, and the first pipe (4) leads to the main buck channel, the second pipe (6) around
Cross the impeller of the turbine (2), which is characterized in that the exhaust system includes for making the pressure in the second pipe (6)
Force the device increased, described device is controlled by control unit, described control unit have detection device and estimation or
Measuring device, the detection device are used to detect the common unlatching of the inlet valve and duaspiracle (19a), the estimation or survey
Amount device is used to estimate or measure the sub-load and engine speed of strong, the described Thermal Motor (1) of effective mean pressure.
6. the engine assembly according to preceding claim (1), wherein the second pipe (6) includes Quick-acting control valve
(13), the Quick-acting control valve interrupts described second during the inlet valve and the second row valve (19a) are opened jointly
Discharge air-flow in pipeline (6), the Quick-acting control valve (13) are controlled by described control unit, and described control unit includes actuating
Device, the actuation means for during the opening according to estimated by the estimation device or measure obtain it is effective be averaged
Pressure, engine speed and sub-load activate the Quick-acting control valve (13).
7. the engine assembly according to preceding claim (1), wherein the turbine (2) is equipped with what is surrounded
Shell (2c), the second pipe (6) lead at least one internal passed part (8) of the shell (2c), the branching part
Divide and bypass the main buck channel, the Quick-acting control valve (13) is arranged in the shell (2c) or the second pipe
(6) include the turbine (2) pavement branch sections, the Quick-acting control valve (13) supports by the pavement branch sections.
8. engine assembly (1) according to any one of the preceding claims, wherein the Quick-acting control valve (13) is
Triple valve, and the second pipe (6) has the opening for leading to the first pipe (4), and there are three types of positions for the triple valve tool
Set: the first closed position, by closing the opening, the second pipe (6) is relative to the gas for coming from the first pipe (4)
Stream keeps sealing；The second position, by opening the opening, the first pipe (4) is connected to the second pipe (6) and institute
The fraction for stating the discharge gas of first pipe (4) leads to the second pipe (6), first and second pipeline (4,
6) downstream being connected to, the second pipe (6) are closed；And third open position, the second pipe (6) is relative to coming from
The air-flow of the first pipe (4) keeps sealing, and the opening is closed.
9. engine assembly (1) according to claim 5, wherein the first passage is connected to first for exhaust
Manifold (5), while the second outlet channel is connected to the second manifold (7) for exhaust, the first pipe (4) comes from institute
It states the first manifold (5) and the second pipe (6) is from second manifold (7), the exhaust system includes from described first
Manifold (6) leads to the circulation duct of second manifold (7), and described control unit has actuation means, the actuation means root
It is beaten according to being estimated by the estimation device or measuring the revolving speed of the strong effective mean pressure that obtains, sub-load and the engine
The valve in the circulation duct is closed on or off.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1752971 | 2017-04-05 | ||
| FR1752971A FR3065033B1 (en) | 2017-04-05 | 2017-04-05 | TURBOCHARGED ENGINE ASSEMBLY WITH TWO EXHAUST DUCTS WITH BURN GAS REINTRODUCTION |
| PCT/FR2018/050573 WO2018185389A1 (en) | 2017-04-05 | 2018-03-12 | Turbocharged engine assembly having two exhaust pipes with reinjection of combusted gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110520612A true CN110520612A (en) | 2019-11-29 |
Family
ID=58707926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880023886.8A Pending CN110520612A (en) | 2017-04-05 | 2018-03-12 | The double-exhaust duct type turbocharged engine assembly of burning waste gas can be reintroduced back to |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3607191A1 (en) |
| CN (1) | CN110520612A (en) |
| FR (1) | FR3065033B1 (en) |
| MA (1) | MA49337A (en) |
| WO (1) | WO2018185389A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2334754A (en) * | 1998-02-27 | 1999-09-01 | Ford Global Tech Inc | Control of a gasoline i.c. engine power output/speed by exhaust gas recirculation |
| WO2009105463A2 (en) * | 2008-02-22 | 2009-08-27 | Borgwarner Inc. | Controlling exhaust gas flow divided between turbocharging and exhaust gas recirculating |
| US20120096856A1 (en) * | 2010-10-21 | 2012-04-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine |
| CN103534450A (en) * | 2011-05-02 | 2014-01-22 | 沃尔沃技术公司 | Method and internal combustion engine system for keeping an exhaust gas aftertreatment system within its working temperature range |
| FR3032486A1 (en) * | 2015-02-09 | 2016-08-12 | Peugeot Citroen Automobiles Sa | TURBOCHARGER ENGINE ASSEMBLY WITH TWO EXHAUST DUCTS WITH FAST CONTROL VALVE |
| CN106050436A (en) * | 2015-04-01 | 2016-10-26 | 大众汽车有限公司 | Exhaust gas device for separation of exhaust strokes of internal combustion engine with at least two cylinder groups |
-
2017
- 2017-04-05 FR FR1752971A patent/FR3065033B1/en active Active
-
2018
- 2018-03-12 EP EP18712994.5A patent/EP3607191A1/en not_active Withdrawn
- 2018-03-12 WO PCT/FR2018/050573 patent/WO2018185389A1/en unknown
- 2018-03-12 CN CN201880023886.8A patent/CN110520612A/en active Pending
- 2018-10-11 MA MA049337A patent/MA49337A/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2334754A (en) * | 1998-02-27 | 1999-09-01 | Ford Global Tech Inc | Control of a gasoline i.c. engine power output/speed by exhaust gas recirculation |
| WO2009105463A2 (en) * | 2008-02-22 | 2009-08-27 | Borgwarner Inc. | Controlling exhaust gas flow divided between turbocharging and exhaust gas recirculating |
| US20120096856A1 (en) * | 2010-10-21 | 2012-04-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine |
| CN103534450A (en) * | 2011-05-02 | 2014-01-22 | 沃尔沃技术公司 | Method and internal combustion engine system for keeping an exhaust gas aftertreatment system within its working temperature range |
| FR3032486A1 (en) * | 2015-02-09 | 2016-08-12 | Peugeot Citroen Automobiles Sa | TURBOCHARGER ENGINE ASSEMBLY WITH TWO EXHAUST DUCTS WITH FAST CONTROL VALVE |
| CN106050436A (en) * | 2015-04-01 | 2016-10-26 | 大众汽车有限公司 | Exhaust gas device for separation of exhaust strokes of internal combustion engine with at least two cylinder groups |
Also Published As
| Publication number | Publication date |
|---|---|
| MA49337A (en) | 2020-02-12 |
| EP3607191A1 (en) | 2020-02-12 |
| FR3065033B1 (en) | 2021-03-12 |
| WO2018185389A1 (en) | 2018-10-11 |
| FR3065033A1 (en) | 2018-10-12 |
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