EP0678159B1 - Einrichtung zur kurbelwellensynchronen erfassung einer sich periodisch ändernden grösse - Google Patents

Einrichtung zur kurbelwellensynchronen erfassung einer sich periodisch ändernden grösse Download PDF

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Publication number
EP0678159B1
EP0678159B1 EP94918296A EP94918296A EP0678159B1 EP 0678159 B1 EP0678159 B1 EP 0678159B1 EP 94918296 A EP94918296 A EP 94918296A EP 94918296 A EP94918296 A EP 94918296A EP 0678159 B1 EP0678159 B1 EP 0678159B1
Authority
EP
European Patent Office
Prior art keywords
segment
crankshaft
dependent signal
signal
internal combustion
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.)
Expired - Lifetime
Application number
EP94918296A
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German (de)
English (en)
French (fr)
Other versions
EP0678159A1 (de
Inventor
Ulrich Koelle
Andreas Lock
Andreas Roth
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP0678159A1 publication Critical patent/EP0678159A1/de
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Publication of EP0678159B1 publication Critical patent/EP0678159B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
    • 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
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow

Definitions

  • the invention relates to a device crankshaft synchronous detection of a periodically changing size in an internal combustion engine, in particular the burden, according to the genus of the main claim.
  • features of the main claim have the advantage that on the one hand a very precise averaging is possible and on the other hand the exact intake manifold pressure curve or exact course of the intake air quantity can be determined can. So it is also possible to do that per work cycle to determine the intake air mass precisely. Overall is one particularly accurate and reliable load determination possible.
  • FIG. 1 shows a schematic representation of the device according to the invention
  • FIG. 2 are associated Signal sequences shown, based on which the invention is explained.
  • the surface of the disk 12 has a number of markings 13a, 13b, 13c which is matched to the number of cylinders of the internal combustion engine. In the case shown in Figure 1, there are three markings, such a disc is used in a six-cylinder internal combustion engine. An area labeled ⁇ KW forms a so-called segment. This area is defined in FIG. 1 as the angle between the rear flank of the mark 13a and the rear flank of the mark 13b.
  • the disk 12 is scanned by a fixed sensor 14, the output signal of which is fed to the control unit 10 as the input signal E 1 and is further processed there.
  • the intake manifold of the internal combustion engine is designated, 16 schematically represents the throttle valve which is arranged in the intake manifold. 17 shows an area of the intake manifold that acts as a pneumatic filter and 18 is a hot-wire air mass meter HLM that registers the air flowing through and the output signal of which is supplied to control unit 10 as signal U LH .
  • An HFM can also be used instead of an HLM.
  • 19 denotes a pressure sensor which is arranged in the intake manifold, for example at one of the locations shown, and measures the intake manifold pressure. This sensor is also connected to the control unit 10, in which the output signals U LP of the pressure sensor are also processed. The control unit 10 supplies output signals A for regulating the internal combustion engine, in particular the ignition and injection.
  • the output signals of the load sensor i.e. the pressure sensor or the air mass meter are suitably processed, in particular they can be filtered so that a periodic waveform arises, which then is processed further.
  • FIG. 2a shows one obtained from the crankshaft sensor Signal shown, only these signal parts applied as the backs of the brands pass by 13a, 13b, 13c are generated on the crankshaft sensor 14.
  • the Distance between the signal edges is for that Embodiment according to Figure 1 120 ° / KW, so it corresponds just one segment.
  • the course of the load signal U L is shown in FIG. 2c. This is either the signal U LH coming from the hot wire or hot film air mass meter or the signal from the pressure sensor U LP arranged in the intake manifold. This signal fluctuates periodically with a period length that corresponds to a segment length or an angle of ⁇ KW .
  • the output signal of the pressure sensor is set in essentially linearly dependent on the pressure DC voltage signal with a superimposed sinusoidal pulsation in the entire speed range.
  • actual waveform is for understanding the Invention irrelevant, it is therefore only periodic Share shown.
  • the pressure sensor is installed directly in the intake manifold, a additional filters can be used, but it is not absolutely necessary for a reliably evaluable signal be preserved.
  • the signal according to Figure 2c is in one in the control unit special grid, for example in a 1 millisecond grid. It is essential that the sampling starts in the same place for each segment. The Synchronization of the scanning takes place depending on the Signal edges according to Figure 2a. Would this synchronization would not be carried out because of the constant Sampling intervals even when the engine is stationary a beat in the load signal.
  • the first scan takes place in the illustrated Embodiment one millisecond after the occurrence of the first edge of the signal according to FIG. 2a.
  • the first scan is designated 1 in Figures 2b and 2c.
  • the second scan occurs a millisecond later and is labeled 2.
  • the fourth scan is the last in the first segment.
  • the fifth scan is not made a millisecond after fourth, but a millisecond after the appearance of the second edge of the signal according to FIG. 2a. So it won't sampled at the point labeled 5, but at the with 5 'designated place.
  • For the sixth to eighth Sampling applies analogously that sampling is carried out at 6 'to 8' and not at 6 to 8 as in the unsynchronized case. This is ensured that the sampling for each segment is synchronized and takes place in the same place.
  • the sampling takes place at 9 "and not 9 or 9 '.
  • the digit 9" follows one Millisecond after the third edge of the signal according to the figure 2a.
  • the averaging takes place over one segment each.
  • the average load signal of the first segment is therefore from the first four sampled load signal values are formed.
  • This Mean corresponds to the mean of the second segment, which is formed from the samples 5 'to 8'.
  • In the third Samples become 9 "to 12" for the segment Averaging used.
  • the load signal (from the HLM or HFM) is integrated over a work cycle, i.e. over a period length, the following applies: where n and n + 1 represents a segment, or between t n and t n + 1 the crankshaft rotates through an angle ⁇ KW .
  • the specified method can be used for both printing and HFM / HLM systems are used.
  • the sensor interface can process the signals Control unit is therefore identical to the hardware by switching over Data records optionally for both data acquisition systems be used.
  • the determined load is used in the control unit to regulate the Internal combustion engine, especially in connection with optimized ignition and injection.
  • Figure 1 shows an embodiment with a segment disc.
  • An incremental disk can also be used, with a large number, for example 60-2 markings, the two missing markings forming a reference mark.
  • the disc can also be used with the Connect camshaft. It is crucial that the Sampling of the periodic signal to be evaluated with a Period of one segment length in each segment on the same place ( Figure 2c).

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  • 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)
EP94918296A 1993-07-05 1994-06-22 Einrichtung zur kurbelwellensynchronen erfassung einer sich periodisch ändernden grösse Expired - Lifetime EP0678159B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4322311 1993-07-05
DE4322311A DE4322311A1 (de) 1993-07-05 1993-07-05 Einrichtung zur kurbelwellensynchronen Erfassung einer sich periodisch ändernden Größe
PCT/DE1994/000716 WO1995002122A1 (de) 1993-07-05 1994-06-22 Einrichtung zur kurbelwellensynchronen erfassung einer sich periodisch ändernden grösse

Publications (2)

Publication Number Publication Date
EP0678159A1 EP0678159A1 (de) 1995-10-25
EP0678159B1 true EP0678159B1 (de) 1998-12-02

Family

ID=6491980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918296A Expired - Lifetime EP0678159B1 (de) 1993-07-05 1994-06-22 Einrichtung zur kurbelwellensynchronen erfassung einer sich periodisch ändernden grösse

Country Status (6)

Country Link
US (1) US5520043A (ja)
EP (1) EP0678159B1 (ja)
JP (1) JP3882026B2 (ja)
KR (1) KR100327078B1 (ja)
DE (2) DE4322311A1 (ja)
WO (1) WO1995002122A1 (ja)

Families Citing this family (11)

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GB2317705B (en) * 1996-09-30 2000-10-04 Cummins Engine Co Inc A control system,an internal combustion engine system,and a tone wheel
US5965806A (en) * 1997-09-30 1999-10-12 Cummins Engine Company, Inc. Engine crankshaft sensing system
US6131547A (en) * 1998-02-27 2000-10-17 Cummins Engine Company, Inc. Electronic engine speed and position apparatus for camshaft gear applications
US6138504A (en) * 1998-06-04 2000-10-31 Ford Global Technologies, Inc. Air/fuel ratio control system
DE19933664A1 (de) * 1999-07-17 2001-01-18 Bosch Gmbh Robert Vorrichtung zur analogen oder digitalen Signalverarbeitung
DE10021644C2 (de) * 2000-05-04 2002-08-01 Bosch Gmbh Robert Betriebszustandabhängiges Umschalten eines Abtastverfahrens eines Drucksensors
DE10064651A1 (de) * 2000-12-22 2002-07-04 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Gasfüllung von Zylindern einer Brennkraftmaschine
US8670894B2 (en) * 2009-04-28 2014-03-11 GM Global Technology Operations LLC Control system and method for sensor signal out of range detection
DE102014225176A1 (de) * 2014-12-08 2016-06-23 Robert Bosch Gmbh Verfahren und Vorrichtung zum Bereitstellen einer gefilterten Luftsystemzustandsgröße in einem Steuergerät eines Verbrennungsmotors
JP6553497B2 (ja) * 2015-12-14 2019-07-31 日立オートモティブシステムズ株式会社 内燃機関の制御装置及びシステム
KR102199901B1 (ko) * 2017-01-23 2021-01-08 현대자동차주식회사 엔진의 흡기계의 압력 센서 감지 방법

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
US3886817A (en) * 1973-05-31 1975-06-03 Borg Warner Engine torque sensor device
JPS55139937A (en) * 1979-04-19 1980-11-01 Japan Electronic Control Syst Co Ltd Suction air amount computing method of internal combustion engine
DE2932336A1 (de) * 1979-08-09 1981-02-26 Bosch Gmbh Robert Steuereinrichtung zur zuendzeitpunktbestimmung und kraftstoffzumessung fuer eine brennkraftmaschine
JPS5658616A (en) * 1979-10-19 1981-05-21 Japan Electronic Control Syst Co Ltd Computing unit for intake quantity of internal combustion engine
JPS5780538A (en) * 1980-11-07 1982-05-20 Nippon Soken Inc Detector for firing limit for internal combustion engine
JPS58185948A (ja) * 1982-04-26 1983-10-29 Hitachi Ltd 燃料噴射制御装置
US4424709A (en) * 1982-07-06 1984-01-10 Ford Motor Company Frequency domain engine defect signal analysis
JPH06100150B2 (ja) * 1985-09-05 1994-12-12 マツダ株式会社 エンジンの吸気量検出装置
DE3803276A1 (de) * 1988-02-04 1989-08-17 Bosch Gmbh Robert Einrichtung zur saugrohrdruckerfassung bei einer brennkraftmaschine
DE4009285A1 (de) * 1989-08-23 1990-12-20 Audi Ag Verfahren zur zylinderselektiven ueberwachung des energieumsatzes bei einer mehrzylinder-brennkraftmaschine
US5076098A (en) * 1990-02-21 1991-12-31 Nissan Motor Company, Limited System for detecting combustion state in internal combustion engine
DE4006273A1 (de) * 1990-02-28 1991-09-26 Forsch Kraftfahrwesen Und Fahr Verfahren und vorrichtung zur ermittlung des verlaufs des innendrucks eines zylinders einer kolbenmaschine
JP2611502B2 (ja) * 1990-06-13 1997-05-21 三菱電機株式会社 内燃機関の失火検出装置
JP2556176B2 (ja) * 1990-06-20 1996-11-20 三菱電機株式会社 内燃機関の故障診断装置
FR2681426B1 (fr) * 1991-09-12 1993-11-26 Renault Regie Nale Usines Procede et dispositif de mesure du couple d'un moteur thermique a combustion interne tenant compte, notamment, de la recirculation des gaz d'echappement et des gaz brules residuels et de l'exces de comburant.
US5321979A (en) * 1993-03-15 1994-06-21 General Motors Corporation Engine position detection using manifold pressure

Also Published As

Publication number Publication date
JP3882026B2 (ja) 2007-02-14
DE59407393D1 (de) 1999-01-14
KR950703118A (ko) 1995-08-23
JPH08501369A (ja) 1996-02-13
US5520043A (en) 1996-05-28
KR100327078B1 (ko) 2002-06-29
DE4322311A1 (de) 1995-01-12
EP0678159A1 (de) 1995-10-25
WO1995002122A1 (de) 1995-01-19

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