WO2006120209A1 - Verfahren und vorrichtung zur ermittlung des verhältnisses zwischen der in einem zylinder einer brennkraftmaschine verbrannten kraftstoffmasse und der in dem zylinder eingesetzten kraftstoffmasse - Google Patents
Verfahren und vorrichtung zur ermittlung des verhältnisses zwischen der in einem zylinder einer brennkraftmaschine verbrannten kraftstoffmasse und der in dem zylinder eingesetzten kraftstoffmasse Download PDFInfo
- Publication number
- WO2006120209A1 WO2006120209A1 PCT/EP2006/062193 EP2006062193W WO2006120209A1 WO 2006120209 A1 WO2006120209 A1 WO 2006120209A1 EP 2006062193 W EP2006062193 W EP 2006062193W WO 2006120209 A1 WO2006120209 A1 WO 2006120209A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- fuel
- combustion
- determined
- fuel mass
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/028—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the combustion timing or phasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0614—Actual fuel mass or fuel injection amount
Definitions
- the present invention relates to a method and a device for determining the ratio between the fuel mass burned in a cylinder of an internal combustion engine and the fuel mass used in the cylinder by means of a cylinder pressure sensor.
- the combustion function is formed from the ratio of burned to used fuel mass (MBR) as a function of the crank angle. From the combustion function can be taken with the center of gravity of combustion another characteristic of the combustion process size. The center of gravity of the combustion denotes the working point of the internal ⁇ function at which 50% of the fuel mass used are burned.
- MBR burned to used fuel mass
- the efficiency, the acoustic and emission behavior of an internal combustion engine are essentially determined by the combustion function.
- Prerequisite for the determination of the combustion function is the knowledge of the cylinder pressure in dependence of the Kurbelwin ⁇ cle. With knowledge of this dependency and with the aid of the pressure curve analysis and the work process calculation, the MBR and thus the combustion function can be calculated by using thermodynamic models of combustion processes.
- thermodynamic models of combustion processes can be found, for example, in the "Handbuch Verbrennungsmotor", by Richard van Basshuysen / Fred Schfer, 1st Edition, April 2002, Chapters 5.2 and 5.3 and in "Automotive Engineering Handbook” by Bosch, 22nd edition, September 1995, pages 358 to 363.
- HCCI mode Homogeneous Charge Compression Ignition mode
- the combustion process in HCCI mode is modeled using cycle processes, with the description of the combustion process using internal state variables such.
- the output variables such as. B. the signal of a knock sensor, the exhaust gas temperature or the air-fuel ratio, the modeled and the real combustion process are fed to a controller, the combustion process influencing variables such.
- the fuel injection or exhaust gas recirculation controls.
- the object of the invention is to provide a method and a device available which overcame the determination of the ratio between the burnt in a cylinder of an internal combustion engine fuel mass and of relieving in the Zy ⁇ fuel mass used with low Rechenier ⁇ permit.
- the object is solved by the features of the independent claims.
- Advantageous embodiments of the invention are characterized in the subclaims.
- the invention is characterized by a method and a corresponding device for determining the ratio between the fuel mass burned in a cylinder of an internal combustion engine and the fuel mass used in the cylinder with the aid of a cylinder pressure sensor.
- an isentropic exponent ⁇ v and a constant k v of a plurality of value pairs of cylinder volume V and associated cylinder pressure p are determined for the process prior to the combustion of fuel in the cylinder.
- the cylinder volume is determined from the signal of a crank shaft associated Kurbelwel ⁇ lensensors and the cylinder pressure by the signal of the cylinder pressure sensor.
- the cylinder pressure for the process before the combustion of fuel in the is determined.
- Cylinder determined by the sizes ⁇ v and k v .
- the measured value of the cylinder pressure sensor is detected. Then, similar to the process before the combustion of fuel in the cylinder, for the process after the combustion of fuel in the cylinder, an isentropic exponent ⁇ n and a constant k n are determined from a plurality of value pairs of cylinder volume and associated cylinder pressure.
- the cylinder pressure for the process after the combustion of fuel in the cylinder on the basis of the sizes ⁇ n and k n determined.
- the ratio between the fuel mass burned in the cylinder and the fuel mass used in the cylinder for the above-mentioned operating point is determined by means of the above-determined cylinder pressures before, during and after the combustion of fuel.
- the method allows the determination of the relationship between th ⁇ rule of burned in the cylinder fuel mass and fuel mass used in the cylinder for any desired operating points, although the method using only a few pairs of values for the cylinder volume and associated cylinder pressure (a minimum of four) metrologically sensed signals of the cylinder pressure sensor and Crankshaft sensor needed.
- the dung OF INVENTION ⁇ contemporary method has the advantage of not be used on ⁇ manoeuvrable thermodynamic models and low fails so the computational effort. In this way, the ratio between the fuel mass burned in the cylinder and the fuel mass used in the cylinder in an engine control unit can be determined in real time without the cost ⁇ expense to increase due to increased demands on a used in engine control units hardware.
- the inventive method is applicable both for gasoline engines, for diesel engines and for gas-powered engines.
- the combustion function is formed from the ratio determined for several operating points between the fuel mass burned in the cylinder and the fuel mass used in the cylinder.
- the combustion function can be used to control the combustion process of internal combustion engines. We- kungsgrad, acoustic and emission behavior ei ⁇ ner internal combustion engine can be optimized.
- the combustion position determines the center of gravity of the combustion.
- the center of gravity of the combustion provides a characteris ⁇ diagram represents size for the description of the combustion process of internal combustion engines and can be used to control the combustion process. Efficiency, acoustic and emission behavior of an internal combustion engine can be optimized.
- the isentropic exponent ⁇ v and the constant k v for the process before the combustion of fuel in the cylinder are determined by the following equation:
- Equation 1 and Equation 2 allow the determination of the respective isentropic exponent and the respective constants with little computational effort.
- the instant exponent for the process before the combustion of fuel in the cylinder or the isentropic exponent for the process after the combustion of fuel in the cylinder are determined by the following equation: (Equation 3)
- Equation 3 pi and p ⁇ measured values denote the cylinder ⁇ pressure sensor and Vi and V 2, the corresponding Zylinderdruckvo ⁇ lumina which are based on the signals of the crankshaft sensor ermit ⁇ telt. Equation 3 allows a determination of the respective isentropic exponent ⁇ with little computational effort.
- the ratio between the fuel mass burned in the cylinder and the fuel mass (MBR) used in the cylinder is determined by the following equation:
- MBR denotes the ratio between the burned in the cylinder fuel mass and fuel mass used in the cylinder
- c is a constant
- p w the measurement value of the cylinder pressure sensor during the combustion of fuel in the cylinder
- p v the particular means of Equation 1 cylinder pressure before combustion of fuel in the cylinder
- p n the cylinder pressure determined by Equation 2 after the combustion of fuel in the cylinder.
- an average value of the isentropic exponent is determined in the presence of more than two value pairs for the cylinder volume and the associated cylinder pressure.
- This mean is used in the corresponding equation 1 or 2 for determining the cylinder pressure before or after the combustion of fuel in the cylinder.
- an average value of the constants specified in equation 1 or 2 is determined in the presence of more than two value pairs for the cylinder volume and the associated cylinder pressure. This average value is in the corresponding sliding ⁇ chung 1 or 2 for the determination of cylinder pressure before or after the combustion of fuel used in the cylinder.
- the combustion process influencing manipulated variables of the internal combustion engine such. B. amount of fuel to be injected or ignition timing, depending on the ratio between the burned in the cylinder fuel mass and the fuel mass used in the cylinder changed. This causes the combustion process fuel consumption, acoustic behavior and pollutant emissions can go ⁇ clearly be optimized.
- the result of this comparison is fed to a controller of the combustion process be ⁇ influencing variables of the internal combustion engine, such. B. amount of fuel to be injected or ignition ⁇ point determined. This causes the combustion process fuel consumption, acoustic behavior and pollutant emissions can go ⁇ clearly be optimized.
- the method according to the invention in internal combustion engine, which can be operated at least in certain operating states with controlled auto-ignition (HCCI mode) applied.
- HCCI mode controlled auto-ignition
- the regulation of the combustion process of these internal combustion engines can be optimized thereby.
- the ratio between the fuel mass burned in the cylinder and the fuel mass used in the cylinder or the combustion function or the center of gravity of the combustion is determined for a plurality of cylinders of an internal combustion engine.
- the sampling rate for the detection of the signals of the cylinder pressure sensor or for the detection of the signals of the crankshaft sensor is changed in a control unit, as a function of ⁇ determined by the inventive method result for the ratio between the burned in the cylinder Fuel mass and the fuel mass used in the cylinder.
- Figure 1 is a schematic representation of an apparatus for carrying out the method according to the invention.
- FIG. 2 shows a flow diagram for illustrating the method according to the invention.
- Figure 1 shows the schematic representation of an apparatus for carrying out the method according to the invention.
- the device has an engine block 1, which comprises a cylinder 2.
- a piston 3 which is ver ⁇ connected via a connecting rod 4 with a crankshaft 5 ⁇ .
- the piston 3 in the cylinder 2 performs a translatory movement in the vertical direction.
- the cylinder volume and the cylinder pressure are dependent on the position of the piston 3 in the cylinder 2.
- a cylinder pressure sensor 6 for detecting the cylinder pressure. Furthermore, located within the engine block 1, a crankshaft sensor 7 for Erfas ⁇ solution of the crank angle.
- the signals of both sensors are detected by a control unit 8.
- the control unit 8 by means of the signals of both sensors and other present in the control unit 8 information such.
- B. speed of the internal combustion engine the ratio between the burned in a Zy ⁇ cylinder 2 of the internal combustion engine fuel mass and the fuel mass used in the cylinder 2 inventively determined. Due to the right of the control unit 8 be ⁇ -sensitive arrows is clear that the controller can handle 8 signals of further sensors, or an exchange of data with other control units is possible.
- FIG. 2 shows a flowchart for illustrating the method according to the invention.
- step Sl the measured values of the crankshaft sensor 7 and the cylinder haw ⁇ sors are collected 6 for the process prior to the combustion of fuel in the cylinder 2 and from this one pair of values for the cylinder volume Vi v and the associated cylinder pressure is determined p iv.
- step S2 the measured values of the crankshaft sensor 7 and the cylinder pressure sensor 6 are detected for another time prior to the combustion of fuel in the cylinder 2 and from this a further pair of values for the cylinder ⁇ volume V 2v and the associated cylinder pressure p 2v determined.
- step S3 the isentropic exponent ⁇ v and the constant k v of equation 1 for the process before the combustion of fuel in the cylinder 2 are determined by means of the value pairs determined in steps S 1 and S 2.
- the isentropic exponent ⁇ v is determined by the following equation:
- the cylinder pressure p v can be determined by means of equation 1. Following is determined in the step S4 for a selected operating point of the cylinder pressure p v prior to combustion of fuel in the cylinder 2 by means of Equation. 1 In step S5, the measured value p w of the cylinder pressure sensor is determined for the above-mentioned operating point
- step S6 the measured values of Kurbelwel ⁇ lensensors 7 and the cylinder pressure sensor 6 are detected for the process after the combustion of fuel in the cylinder 2 and from this a pair of values for the cylinder volume V 1n and the associated cylinder pressure p in determined.
- step S7 for another time after the combustion of fuel in the cylinder 2, the measured values of the crankshaft sensor
- step S8 the isotropic exponent ⁇ n and the constant k n of equation 2 for the process before the combustion of fuel in the cylinder 2 are determined by means of the value pairs determined in steps S6 and S7.
- the isentropic exponent ⁇ n is determined by the following equation:
- the cylinder pressure p n can be determined by means of equation 2. Subsequently, in step S9 for the above-mentioned operating point, the cylinder pressure p n determined after the combustion of fuel in the cylinder 2 by means of equation 2. In step S10, the ratio between the fuel mass burned in the cylinder 2 of the internal combustion engine and the fuel mass MBR used in the cylinder 2 is determined by means of equation 4. In Equation 4, c denotes a constant.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008510574A JP2008540912A (ja) | 2005-05-10 | 2006-05-10 | 内燃機関のシリンダ内で燃焼される燃料質量とシリンダに供給される燃料質量との間の比率を求めるための方法及び装置 |
US11/913,835 US20080196488A1 (en) | 2005-05-10 | 2006-05-10 | Method and Device for Determining the Ratio Between the Fuel Mass Burned in a Cylinder of an Internal Combustion Engine and the Fuel Mass Supplied to the Cylinder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005021528A DE102005021528B3 (de) | 2005-05-10 | 2005-05-10 | Verfahren und Vorrichtung zur Ermittlung des Verhältnisses zwischen der in einem Zylinder einer Brennkraftmaschine verbrannten Kraftstoffmasse und der in dem Zylinder eingesetzten Kraftstoffmasse |
DE102005021528.9 | 2005-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006120209A1 true WO2006120209A1 (de) | 2006-11-16 |
Family
ID=36590788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/062193 WO2006120209A1 (de) | 2005-05-10 | 2006-05-10 | Verfahren und vorrichtung zur ermittlung des verhältnisses zwischen der in einem zylinder einer brennkraftmaschine verbrannten kraftstoffmasse und der in dem zylinder eingesetzten kraftstoffmasse |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080196488A1 (de) |
JP (1) | JP2008540912A (de) |
KR (1) | KR20080011434A (de) |
CN (1) | CN101171412A (de) |
DE (1) | DE102005021528B3 (de) |
WO (1) | WO2006120209A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010518384A (ja) * | 2007-02-07 | 2010-05-27 | ヴォルヴォ パワートレイン アーベー | 自己調節シリンダー圧に基づく放熱の算出 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7506535B2 (en) | 2007-04-24 | 2009-03-24 | Gm Global Technology Operations, Inc. | Method and apparatus for determining a combustion parameter for an internal combustion engine |
DE102007059354B3 (de) * | 2007-12-10 | 2009-07-30 | Continental Automotive Gmbh | Verfahren und Steuergerät zur Ermittlung der durch den Zylinderdruck am Kolben eines Zylinders einer Brennkraftmaschine verrichteten Gasarbeit und des inneren Mitteldrucks |
US8353196B2 (en) * | 2008-09-24 | 2013-01-15 | Toyota Jidosha Kabushiki Kaisha | Gas-mixture-nonuniformity acquisition apparatus and gas-mixture-state acquisition apparatus for internal combustion engine |
JP2012154276A (ja) * | 2011-01-27 | 2012-08-16 | Honda Motor Co Ltd | 制御装置及び同装置を備えたコージェネレーション装置 |
EP3227542B1 (de) | 2014-12-01 | 2019-11-06 | Wärtsilä Finland Oy | Verfahren zur steuerung des betriebs eines variablen einlassventilsystems eines kolbenverbrennungsmotors und ein kolbenverbrennungsmotor |
US9689321B2 (en) * | 2015-06-10 | 2017-06-27 | GM Global Technology Operations LLC | Engine torque control with combustion phasing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19756919A1 (de) * | 1997-04-01 | 1998-10-08 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Bestimmung einer Gasfüllung eines Verbrennungsmotors |
US20030105575A1 (en) * | 2001-12-05 | 2003-06-05 | Visteon Global Technologies, Inc. | Method for estimating engine cylinder variables using second order sliding modes |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10237328B4 (de) * | 2002-08-14 | 2006-05-24 | Siemens Ag | Verfahren zum Regeln des Verbrennungsprozesses einer HCCI-Brennkraftmaschine |
-
2005
- 2005-05-10 DE DE102005021528A patent/DE102005021528B3/de not_active Expired - Fee Related
-
2006
- 2006-05-10 JP JP2008510574A patent/JP2008540912A/ja not_active Withdrawn
- 2006-05-10 CN CNA2006800159098A patent/CN101171412A/zh active Pending
- 2006-05-10 KR KR1020077028775A patent/KR20080011434A/ko not_active Application Discontinuation
- 2006-05-10 US US11/913,835 patent/US20080196488A1/en not_active Abandoned
- 2006-05-10 WO PCT/EP2006/062193 patent/WO2006120209A1/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19756919A1 (de) * | 1997-04-01 | 1998-10-08 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Bestimmung einer Gasfüllung eines Verbrennungsmotors |
US20030105575A1 (en) * | 2001-12-05 | 2003-06-05 | Visteon Global Technologies, Inc. | Method for estimating engine cylinder variables using second order sliding modes |
Non-Patent Citations (2)
Title |
---|
HEYWOOD J B ET AL HOLMAN J P (ED ): "MODELING REAL ENGINE FLOW AND COMBUSTION PROCESSES", INTERNAL COMBUSTION ENGINE FUNDAMENTALS, MCGRAW-HILL SERIES IN MECHANICAL ENGINEERING, NEW YORK, MCGRAW-HILL, US, 1988, pages 748 - 765, XP002376013, ISBN: 0-07-100499-8 * |
MLADEK M ET AL: "A Model for the Estimation of Inducted Air Mass and the Residual Gas Fraction usng Cylinder Pressure Measurements", SAE TECHNICAL PAPER SERIES, SOCIETY OF AUTOMOTIVE ENGINEERS, WARRENDALE, PA, US, no. 2000-1-958, 6 March 2000 (2000-03-06), pages I - II,1, XP002337522, ISSN: 0148-7191 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010518384A (ja) * | 2007-02-07 | 2010-05-27 | ヴォルヴォ パワートレイン アーベー | 自己調節シリンダー圧に基づく放熱の算出 |
Also Published As
Publication number | Publication date |
---|---|
US20080196488A1 (en) | 2008-08-21 |
DE102005021528B3 (de) | 2006-07-06 |
CN101171412A (zh) | 2008-04-30 |
KR20080011434A (ko) | 2008-02-04 |
JP2008540912A (ja) | 2008-11-20 |
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