CN107918692A - Method for the efficiency value for determining variable geometry turbine - Google Patents

Method for the efficiency value for determining variable geometry turbine Download PDF

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Publication number
CN107918692A
CN107918692A CN201710930304.1A CN201710930304A CN107918692A CN 107918692 A CN107918692 A CN 107918692A CN 201710930304 A CN201710930304 A CN 201710930304A CN 107918692 A CN107918692 A CN 107918692A
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CN
China
Prior art keywords
turbine
value
efficiency value
geometry
efficiency
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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.)
Granted
Application number
CN201710930304.1A
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Chinese (zh)
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CN107918692B (en
Inventor
托尔斯滕·施诺尔布斯
米凯莱·米乔
维韦克·斯里瓦斯塔瓦
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FEV Europe GmbH
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FEV Europe GmbH
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • 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
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
    • F02C9/16—Control of working fluid flow
    • 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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/81—Modelling or simulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/82—Forecasts
    • F05D2260/821—Parameter estimation or prediction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/70—Type of control algorithm
    • F05D2270/71—Type of control algorithm synthesized, i.e. parameter computed by a mathematical model
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Evolutionary Computation (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Computer Hardware Design (AREA)
  • Supercharger (AREA)

Abstract

Method and a kind of control device the present invention relates to a kind of efficiency value for being used to determine variable geometry turbine.This method proposes：The efficiency value (η is determined by means of the model based at least two feature charts (K1, K2, K3, K4)Air), and by the rotary speed (n of the turbineT), the pressure ratio (r of the turbineT) and the turbine geometry value (VG) be used as the model input value.

Description

Method for the efficiency value for determining variable geometry turbine
The present invention relates to a kind of method of efficiency value for being used to determine variable geometry turbine and a kind of control to set It is standby.
201508866 A2 of WO disclose a kind of method for being used to determine the torque in variable geometry turbocharger (VGT).Make The torque is determined with the model with characteristic pattern table.
It is used to determine that the method for the efficiency value of variable geometry turbine proposes according to the present invention：By means of based on extremely The model of few two feature charts determines the efficiency value, and by the rotary speed of the turbine, the pressure ratio of the turbine Rate and the geometry value of the turbine are used as the input value of the model.
The efficiency value of the turbine is defined as the ratio of turbine net power and turbine constant entropy power.By the turbine Pressure ratio be defined toWherein, Pus,TIt is the pressure in the positive upstream of turbine, and Pds,TBe turbine just under The pressure of trip.Be in turbine the turbocharger of vehicle part in the case of, preferable application is：The pressure can Be explosive motor exhaust line inside pressure.The geometry value represents the section of turbine：Can be with the section to the whirlpool The turbo blade supply gas stream of turbine.The geometry value can also be the dimensionless number for the degree for describing section, for example, 0% table Show the closing position of the element (being usually guide vane) for setting the section and 100% expression open position.Torque is excellent Selection of land is current torque, and rotary speed is current rotary speed, and pressure ratio is current pressure ratio.In addition, efficiency value, Rotary speed and/or pressure ratio are actual values, but can also be alternatively calibrated value and/or normalized value. Under latter event, actual value can be converted to using appropriate transmission function.
The fundamental issue of feature chart is：Measured value is used when creating these feature chart (being referred to as calibration), But the quantity of measured value is limited.It is thereby necessary that the codomain that should be covered for this feature chart, such as by means of interpolation Method or extrapolation determine multiple other values.The function that this feature chart is based on is more complicated, be just more difficult to determine as close possible to The value of actual value.The present invention can use multiple feature charts in a model by advisably selecting input parameter, thus keep away Exempt from or at least reduce this difficulty.
The favourable first embodiment of the present invention proposes：At least two features chart is retouched for different geometry values respectively The relation between the torque of the turbine and rotary speed and pressure ratio is stated, and the efficiency value is by means of dependent on turning The equation of square calculates.In this way, in order to determine efficiency value, the feature chart for being easy to create can be used.
Control device according to the present invention includes computer and computer program, wherein, which is adapted to be For determining the efficiency value of the turbine according to this method.
Multiple preferred embodiments are described below.In the accompanying drawings
Fig. 1 shows the method for being used to determine efficiency value according to the present invention, and
Fig. 2 shows the fisrt feature chart used in the method according to the invention.
Fig. 1 shows the method for being used to determine efficiency value according to the present invention.It is used to determine according to the present invention variable several The efficiency value η of what shape turbineAirMethod, by means of based at least two feature charts (be characterized herein chart K1, K2, K3, K4) model determine efficiency value ηAir.By the current rotary speed n of the turbineT, the turbine current pressure ratio Rate rTAnd the current geometry value VG of the turbine is used as the input value of the model.
Can be by physically describing the torque M of the turbine with minor functionT：
Wherein,
-MTIt is the current torque of turbine,
-mCurrentlyIt is the current Quality flow through turbine,
-cpIt is the specific heat capacity for the gas for flowing through turbine,
-Tus,trbIt is the temperature of turbine upstream,
- () is the aerodynamic efficiency of turbine,
-It is pressure ratio rT,
-It is adiabatic exponent, and
-nTIt is the current rotary speed of turbine.
Thus, it is also applied for efficiency：
Current measurement value generally, for parameters there are quantification, can pass through by means of these measured values Above-mentioned function determines the torque MTOr efficiency value ηAir.Because the quantity of these measured values is limited, it is necessary to which establishment can To be at least the model that required codomain provides sufficient amount of other values.
Fig. 2 schematically illustrates the fisrt feature chart K1 that can be used in this embodiment.According to rotary speed nT (z-axis) and pressure ratio rT(x-axis) draws torque MT(y-axis).Here, geometry value VG is fixed.As can be seen that plane is Flat.When speed is fixed, in torque MTWith pressure ratio rTBetween there is (almost) linear relation.Thus, such spy Chart is levied especially suitable for calibration.
The method according to the invention, using at least two feature charts, these feature charts describe turning for the turbine Square (MT), rotary speed (nT) and pressure ratio (rT) between relation and be associated respectively from different geometry value VG. Here, for example using four features chart K1, K2, K3, K4, wherein, K1=0%VG, K2=25%VG, K3=50%VG, simultaneously And K4=100%VG.2 to 10 feature chart quantity are especially proved to be particularly advantageous.Utilize rotary speed nTAnd pressure Power ratio rT, which provides four torques in first step S1, these torques are associated from different geometry values respectively. By means of above-mentioned equation, the torque that is determined by means of feature chart is then passed through to calculate the effect being associated with corresponding geometry value Rate value.Its residual value needed to calculate the efficiency value can be the output valve of model, measured value or otherwise determine Value.It is that those skilled in the art are sufficiently known to the definite of these its residual values, thus need not describes in detail herein.
In next step S2, to the efficiency value determined by means of these feature chart K1, K2, K3, K4 and the equation Interpolation is carried out, and is determined by means of resulting interpolating function, by the use of current geometry value VG as other input value Current efficiency value ηAir。
Alternatively, it is also feasible that：The interpolating function for different torques is determined, followed by the interpolating function To determine the torque associated with geometry value VG and determine current efficiency value η using the torque, by means of the equationAir。
The embodiment of control device (not shown) according to the present invention includes computer and computer program, wherein, the meter Calculation machine program is adapted for determining the current efficiency value of the turbine according to method shown herein.The control device is excellent Selection of land is the control device for being used to control turbocharger of vehicle, wherein, which is the composition portion of the turbocharger Point.

Claims (4)

1. a kind of method for the efficiency value for being used to determine variable geometry turbine, wherein, by means of special based at least two The model of sign chart (K1, K2, K3, K4) determines the efficiency value (ηAir), and by the rotary speed (n of the turbineT), should Pressure ratio (the r of turbineT) and the turbine geometry value (VG) be used as the model input value.
2. according to the method described in claim 1, wherein at least two features chart (K1, K2, K3, K4) is respectively for difference Geometry value (VG) describes torque (MT) and rotary speed (nT) and pressure ratio (rT) between relation, and by means of according to The Lai Yu torques (MT) equation calculate the efficiency value (ηAir)。
3. according to the method described in claim 2, wherein to by means of the definite torque of these feature charts (K1, K2, K3, K4) Or efficiency value carries out interpolation, and determine the efficiency value (η associated with the geometry value (VG)Air)。
4. a kind of control device for vehicle, which includes computer and computer program, wherein, the computer journey Sequence is adapted for determining the turbine (M according to the method described in one of claims 1 to 3T) efficiency value (ηAir)。
CN201710930304.1A 2016-10-11 2017-10-09 Method for determining an efficiency value of a variable geometry turbine Active CN107918692B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119349 2016-10-11
DE102016119349.6 2016-10-11

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CN107918692B CN107918692B (en) 2023-06-02

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001048363A1 (en) * 1999-12-28 2001-07-05 Robert Bosch Gmbh Method and device for controlling an internal combustion engine that is provided with an air system
US20030216856A1 (en) * 2002-05-15 2003-11-20 Jacobson Evan Earl Diagnostic systems for turbocharged engines
US20050172627A1 (en) * 2004-02-10 2005-08-11 Baize Scott R. System for limiting turbocharger rotational speed
CN101048584A (en) * 2004-08-13 2007-10-03 卡明斯公司 Techniques for determining turbocharger speed
US20090094009A1 (en) * 2007-10-04 2009-04-09 Martin Muller System and method for modeling of turbo-charged engines and indirect measurement of turbine and waste-gate flow and turbine efficiency
CN101983283A (en) * 2008-04-03 2011-03-02 欧陆汽车有限责任公司 Device for controlling the exhaust-gas turbocharging of an internal combustion engine, and internal combustion engine
US20130042609A1 (en) * 2011-08-17 2013-02-21 GM Global Technology Operations LLC Unit for estimating the rotational speed of a turbocharger and system and method for controlling an internal combustion engine with a turbocharger
CN103597413A (en) * 2011-06-03 2014-02-19 西门子公司 Method for the computer-supported generation of a data-driven model of a technical system, in particular of a gas turbine or wind turbine
EP2733337A2 (en) * 2012-11-19 2014-05-21 Volkswagen Aktiengesellschaft Method and device for controlling a boost pressure of a charged combustion engine
WO2015088662A2 (en) * 2013-12-10 2015-06-18 Cummins Inc. System, method, and apparatus for variable geometry turbocharger control
US20150330326A1 (en) * 2012-12-12 2015-11-19 Purdue Research Foundation Nonlinear model-based controller for premixed charge compression ignition combustion timing in diesel engines
JP2016075174A (en) * 2014-10-03 2016-05-12 ボッシュ株式会社 Turbine efficiency learning processing method and boost pressure control device
CN105980945A (en) * 2014-02-07 2016-09-28 西门子股份公司 Estimation of health parameters in industrial gas turbines

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
WO2015008866A1 (en) 2013-07-19 2015-01-22 東ソー株式会社 Triazine compound and organic electroluminescent element containing same

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001048363A1 (en) * 1999-12-28 2001-07-05 Robert Bosch Gmbh Method and device for controlling an internal combustion engine that is provided with an air system
US20030216856A1 (en) * 2002-05-15 2003-11-20 Jacobson Evan Earl Diagnostic systems for turbocharged engines
US20050172627A1 (en) * 2004-02-10 2005-08-11 Baize Scott R. System for limiting turbocharger rotational speed
CN101048584A (en) * 2004-08-13 2007-10-03 卡明斯公司 Techniques for determining turbocharger speed
US20090094009A1 (en) * 2007-10-04 2009-04-09 Martin Muller System and method for modeling of turbo-charged engines and indirect measurement of turbine and waste-gate flow and turbine efficiency
CN101983283A (en) * 2008-04-03 2011-03-02 欧陆汽车有限责任公司 Device for controlling the exhaust-gas turbocharging of an internal combustion engine, and internal combustion engine
CN103597413A (en) * 2011-06-03 2014-02-19 西门子公司 Method for the computer-supported generation of a data-driven model of a technical system, in particular of a gas turbine or wind turbine
US20130042609A1 (en) * 2011-08-17 2013-02-21 GM Global Technology Operations LLC Unit for estimating the rotational speed of a turbocharger and system and method for controlling an internal combustion engine with a turbocharger
EP2733337A2 (en) * 2012-11-19 2014-05-21 Volkswagen Aktiengesellschaft Method and device for controlling a boost pressure of a charged combustion engine
US20150330326A1 (en) * 2012-12-12 2015-11-19 Purdue Research Foundation Nonlinear model-based controller for premixed charge compression ignition combustion timing in diesel engines
WO2015088662A2 (en) * 2013-12-10 2015-06-18 Cummins Inc. System, method, and apparatus for variable geometry turbocharger control
CN105980945A (en) * 2014-02-07 2016-09-28 西门子股份公司 Estimation of health parameters in industrial gas turbines
JP2016075174A (en) * 2014-10-03 2016-05-12 ボッシュ株式会社 Turbine efficiency learning processing method and boost pressure control device

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DE102017122928A1 (en) 2018-01-18
CN107918692B (en) 2023-06-02

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