CN102297013A - Method and device for producing vacuum in vacuum chamber of vehicle having internal combustion engine - Google Patents

Method and device for producing vacuum in vacuum chamber of vehicle having internal combustion engine Download PDF

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Publication number
CN102297013A
CN102297013A CN2011101694938A CN201110169493A CN102297013A CN 102297013 A CN102297013 A CN 102297013A CN 2011101694938 A CN2011101694938 A CN 2011101694938A CN 201110169493 A CN201110169493 A CN 201110169493A CN 102297013 A CN102297013 A CN 102297013A
Authority
CN
China
Prior art keywords
combustion engine
internal
vacuum
vacuum chamber
described method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101694938A
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Chinese (zh)
Inventor
里昂纳德·巴奇
罗布·斯塔尔曼
克劳斯·马尔奇安科
托拜厄斯·埃米格
路德维格·费恩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to CN201610907761.4A priority Critical patent/CN107100718B/en
Publication of CN102297013A publication Critical patent/CN102297013A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • 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
    • F02B37/16—Control of the pumps by bypassing charging air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D11/105—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/024—Increasing intake vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/41—Control to generate negative pressure in the intake manifold, e.g. for fuel vapor purging or brake booster
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Supercharger (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The invention relates to a method and a device for producing vacuum in a vacuum chamber (9) of a vehicle having an internal combustion engine (1). The vacuum chamber and an inlet chamber (5, 6) of the internal combustion engine are connected to each other through a check valve (10). During the throttling of the internal combustion engine, the check valve (10) opens towards the inlet chamber when the pressure in the inlet chamber declines to a value that is lower than the pressure in the vacuum chamber. The internal combustion engine includes turbochargers (2, 3). A compressor (3) in the turbocharger is shunted through a shunting channel (11) having an equalizing valve (12). During the throttling of the internal combustion engine, the equalizing valve (12) is driven to be opened.

Description

Vacuum method and apparatus in the vacuum chamber of motor vehicle with internal-combustion engine
Technical field
The present invention relates to a kind of in the vacuum chamber of motor vehicle with internal-combustion engine vacuum method and apparatus, this internal-combustion engine comprises turbosupercharger.
Background technique
Brake booster needs vacuum usually, and in having the motor vehicle of internal-combustion engine, required vacuum is produced by machinery or power-actuated pump usually.Power-actuated vacuum pump is compared on fuel consumption with mechanically operated vacuum pump and is more had superiority, but their working life is limited and they need high cost of production.
No. 6557403 patent documentations of US have announced by one-way valve vacuum brake assistor have been connected to the intake manifold of direct-injection internal combustion engine that vacuum is produced by the engine pump that is used for power brake.
DE 102007059956A1 patent documentation has proposed the similar method that is used for internal-combustion engine, and described internal-combustion engine comprises turbosupercharger.
The inventor has recognized that, if internal-combustion engine by turbocharger supercharged, then knownly can cause considerable problem by the vacuum method of motor-drive pump in operating process.
Summary of the invention
The objective of the invention is to,, when engine's throttling, can rely on the vacuum in intake manifold or other suction chamber, in the vacuum chamber of motor vehicle, produce or the auxiliary vacuum that produces if internal-combustion engine has turbosupercharger.
Reach this purpose by the following technical programs.
The present invention is based on following understanding: throttling arrangement if desired, as throttle valve, close the upstream of intake manifold,, local compressor stall can take place in the compressor of turbosupercharger then so that in intake manifold, produce enough vacuum in hypervelocity or deboost phase suddenly.The compressor stall of described part can cause compressor some or all of paralysis in compression process (compressor fluctuation or compressor stall) and therefore cause the compressor bumpy running.
Described compressor stall is avoided by the split channel on the compressor of the present invention, described split channel comprises equalizing valve, itself and throttle valve open and close on the contrary, when throttle valve cuts out suddenly, pass the air-flow that compressor flows to compressor inlet and can not be interrupted, but can flow back to compressor inlet.
By the present invention, even in having the internal-combustion engine of turbosupercharger, intake manifold also can of short duration transfinite or the deboost phase as Brake booster or suchlike vacuum source, its result compares with mechanically operated vacuum pump, improved fuel economy, and compare with power-actuated vacuum pump, prolonged working life, reduced cost.The appearance of this situation does not weaken the operation of turbosupercharger.
Enforcement of the present invention not necessarily means does not need traditional vacuum pump that is used for Brake booster fully.Because Security and capacity, perhaps because motor vehicle comprise the assembly that other need vacuum to operate, insert machinery in addition again, it may be necessary preferably also having the vacuum pump of electric power.Yet described vacuum pump can design smaller and more exquisitely and keep suitable fuel saving, because this extra vacuum pump only just is activated when needing especially.
Favourable improvement of the present invention is set forth in the dependent claims.
Description of drawings
Further feature of the present invention and advantage disclose in below with reference to the explanation of accompanying drawing to embodiment, wherein:
Fig. 1 represents to be used for the basic view at the vacuum device of internal-combustion engine with turbosupercharger of motor vehicle;
Fig. 2 represents to be used for the chart of the problem that interpretation maps 1 shown device produces;
Fig. 3 represents the basic view that is used at the vacuum device of internal-combustion engine with turbosupercharger of motor vehicle according to of the present invention; And
Fig. 4 represents to be used for the chart how interpretation maps 3 shown devices realize the object of the invention;
Embodiment
Fig. 1 schematically represents to have the four-cylinder internal combustion engine 1 of turbosupercharger, and it comprises exhaust driven gas turbine 2 and passes through the connected compressor 3 of axle.Compressor 3 compresses fresh airs and described air is transferred in the intake manifold 6 of internal-combustion engine 1 through intercooler 4 and suction tude 5.Adjustable throttle valve 7 is arranged in the suction tude 5 and suction tude 5 goes out pipeline 8 in the downstream branch of throttle valve 7, the vacuum chamber 9 of described pipeline guiding Brake booster, and described Brake booster is not shown, and it is installed in the motor vehicle under the internal-combustion engine 1.Be provided with one-way valve 10 in the pipeline 8, during the internal-combustion engine throttling, when the pressure in the suction chamber is in pressure in the vacuum chamber 9, described one-way valve 10 is opened towards the air inlet chamber 5,6 in throttle valve 7 downstreams, so that produce vacuum and/or repeat to produce and/or fill up again in vacuum chamber 9.
The a series of eigenvalue of Fig. 2 presentation graphs 1 shown device in the horizontal time axis of several seconds wherein produced the of short duration overrun mode and/or the braking mode of motor vehicle.Shown eigenvalue relates to the internal-combustion engine 1 with turbosupercharger, and described turbosupercharger has solid shape and be provided with diverter valve (also can be used as " petcock ") in exhaust flow.Described diverter valve is opened by the sensor of compressor side under default boost pressure, directly be transferred in outlet pipe through turbine waste gas then, this has prevented that turbine trip speed from excessively raising, speed and 6 BMEP (the Break Mean Effective Pressure that cling to that internal-combustion engine 1 changes with per minute 1500, the sudden change mean effective pressure, effective pressure in the expression cylinder) operation, and required vacuum is set to 0.4 crust absolute pressure in the vacuum chamber 9.
Shown in moment of gas pedal of the unexpected releaser motor vehicle of starting point (at the 4.0S place) expression driver of time shaft.So the electronic control unit of internal-combustion engine 1 (ECU) is closed the EGR valve, adjust the exhaust gas recirculation (EGR) of internal-combustion engine 1 by this, so that intake manifold 6 do not filled by waste gas, and stop fuel and spray, so that the ratio of air/fuel rises to numerical value one.Throttle valve 7 cuts out after about 0.6 second, reopens after keeping closing 0.6 second time T, shown on Fig. 2 1/3.
In 1/3 part of the centre of Fig. 2, how the pressure in the pressure of compressor 3 back, the pressure in the intake manifold 6, ER EGR Rate and the vacuum chamber 9 shows, and all is plotted on the same time shaft.
When the pressure in the intake manifold 6 is reduced to the pressure that is lower than in the vacuum chamber 9, one-way valve 10 open and vacuum chamber 9 in pressure be reduced to the absolute pressure of maximum 0.4 crust equally.
In following 1/3 part of Fig. 2, by the air-flow and the (BMEP: the sudden change mean effective pressure) how to show, all be plotted on the same time shaft of the EMP in the cylinder of compressor 3.The mean effective pressure of observing in the cylinder is as can be known sprayed the back for negative closing fuel, and it represents overrun mode.In addition, observation reduces rapidly when throttle valve 7 air-flow by compressor 3 when the starting point of time period T is closed as can be known, and the pressure of compressor 3 back remains unchanged in fact.This just causes compressor stall, i.e. the bumpy running of compressor 3.
As shown in Figure 3, this can overcome by split channel 11, and split channel 11 is used to compressor 3 shuntings, as replenishing of assembly shown in Figure 1.But split channel 11 comprises the equalizing valve 12 that electric power opens and closes, as shown in the figure.In the starting point of time period T, the electronic control unit of internal-combustion engine 1 (ECU) is opened equalizing valve 12 and is closed described valve again in the ending of time period T.
Fig. 4 is the same with Fig. 2, comprised the same eigenvalue on same time shaft, but it is for the assembling among Fig. 3,1/3 part can be seen down in the drawings, because equalizing valve 12, even in time period T, the air-flow by compressor 3 is also kept in fact, and compressor 3 can turn round by this sustainedly and stably.
Last 1/3 part of Fig. 4 has been represented the scope of opening of equalizing valve 12 further.Observe as can be known equalizing valve 12 and throttle valve 7 and be opened and/or close in the identical time in fact, but direction is opposite.
Determined that selectively, the trend of compressor stall can reduce by reducing the vacuum that needs in 9 of the vacuum chambers slightly, specifically, is reduced to the absolute pressure of 0.5 crust, rather than the absolute pressure of 0.4 crust.Described measure can also be used in combination by equalizing valve and more or less effective reflux pipeline.
Determined that also the trend of compressor stall can not reduce by the diverter valve (petcock) of slowly closing throttle valve or open in the exhaust flow of turbosupercharger.

Claims (10)

1. vacuum method in the vacuum chamber (9) of motor vehicle with internal-combustion engine (1), the vacuum chamber of internal-combustion engine and suction chamber (5,6) connect by one-way valve (10), during the throttling internal-combustion engine, when the pressure in the suction chamber is reduced to the pressure that is lower than vacuum chamber, one-way valve (10) is opened towards suction chamber, it is characterized in that, described internal-combustion engine comprises turbosupercharger (2,3), and the compressor in the turbosupercharger (3) is through split channel (11) shunting, and split channel (11) comprises equalizing valve (12), when the throttling internal-combustion engine, drive equalizing valve (12) and open.
2. method according to claim 1 is characterized in that, drives equalizing valve (12) and opens with equalizing valve (12) when throttling arrangement (7) quick closedown of internal-combustion engine (1), and equalizing valve (12) is closed once more when throttling arrangement is opened once more.
3. method according to claim 1 and 2 is characterized in that, equalizing valve (12) is designed to when throttling arrangement (7) cuts out and/or opens, and the air-flow by compressor (3) remains unchanged in fact.
4. according to each described method in the claim 1 to 3, it is characterized in that required vacuum is approximately 0.4 absolute pressure in the vacuum chamber (9).
5. according to each described method in the claim 1 to 3, it is characterized in that required vacuum is approximately 0.5 absolute pressure in the vacuum chamber (9).
6. according to each described method in the claim 1 to 5, it is characterized in that internal-combustion engine (1) has exhaust gas recirculation and internal-combustion engine throttling after cutting out exhaust gas recirculation.
7. according to each described method in the claim 1 to 6, it is characterized in that internal-combustion engine (1) has the fuel injection and internal-combustion engine is cutting out fuel injection back throttling.
8. according to each described method in the claim 1 to 7, it is characterized in that described method is implemented in the overrun mode of motor vehicle or braking mode.
9. according to each described method in the claim 1 to 8, it is characterized in that vacuum chamber (9) belongs to the Brake booster of motor vehicle.
10. vacuum device in the vacuum chamber (9) of motor vehicle with internal-combustion engine (1), the vacuum chamber of internal-combustion engine and suction chamber (5,6) connect by one-way valve (10), it is characterized in that, described device is used for implementing as each described method of claim 1 to 9.
CN2011101694938A 2010-06-25 2011-06-22 Method and device for producing vacuum in vacuum chamber of vehicle having internal combustion engine Pending CN102297013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610907761.4A CN107100718B (en) 2010-06-25 2011-06-22 Method and device for producing a vacuum in a vacuum chamber of a motor vehicle having an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017585.4 2010-06-25
DE102010017585A DE102010017585B4 (en) 2010-06-25 2010-06-25 Method and device for generating negative pressure in a vacuum chamber in a motor vehicle with internal combustion engine

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CN2011101694938A Pending CN102297013A (en) 2010-06-25 2011-06-22 Method and device for producing vacuum in vacuum chamber of vehicle having internal combustion engine

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CN103899412A (en) * 2012-12-27 2014-07-02 现代自动车株式会社 Brake negative pressure generating device for vehicle

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CN2440714Y (en) * 2000-09-08 2001-08-01 山东巨力股份有限公司 Vacuum aid device for braking agricultural truck or transporting vehicle refitted by tractor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899412A (en) * 2012-12-27 2014-07-02 现代自动车株式会社 Brake negative pressure generating device for vehicle
CN103899412B (en) * 2012-12-27 2017-09-29 现代自动车株式会社 Brake negative pressure generating device for vehicle

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Publication number Publication date
CN107100718B (en) 2020-07-14
DE102010017585A1 (en) 2011-12-29
CN107100718A (en) 2017-08-29
DE102010017585B4 (en) 2012-12-20

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