EP3020946A1 - Procédé de reconnaissance de l'orientation d'une pompe à carburant haute pression - Google Patents

Procédé de reconnaissance de l'orientation d'une pompe à carburant haute pression Download PDF

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Publication number
EP3020946A1
EP3020946A1 EP15191875.2A EP15191875A EP3020946A1 EP 3020946 A1 EP3020946 A1 EP 3020946A1 EP 15191875 A EP15191875 A EP 15191875A EP 3020946 A1 EP3020946 A1 EP 3020946A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
pressure
pump
rail pressure
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.)
Withdrawn
Application number
EP15191875.2A
Other languages
German (de)
English (en)
Inventor
Markus Raasch
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
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3020946A1 publication Critical patent/EP3020946A1/fr
Withdrawn legal-status Critical Current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
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02D2200/0602—Fuel pressure
    • 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
    • F02D2250/31—Control of the fuel pressure

Definitions

  • the invention relates to a method for detecting the pump orientation of a high-pressure fuel pump with controllable suction valve according to the preamble of claim 1.
  • the subject matter of the present invention is also a computer program which is set up to carry out each step of the method according to the invention as well as an electronic storage medium on which the computer program is stored.
  • the invention relates to an electronic control device which comprises an electronic storage medium.
  • an inductive sensor which scans the teeth on the starter ring gear and determines therefrom a speed value.
  • the top dead center of at least one cylinder is marked by means of a marking.
  • a tooth is omitted or a tooth is highlighted accordingly. This can be done by a tooth deviating from the other teeth in a certain way.
  • a tooth may be made of a different material.
  • the inventive method for detecting the pump orientation of a high-pressure fuel pump with in particular electrically controllable intake valve of an internal combustion engine with a common rail injection system for fuel injection, in which is closed from a rail pressure signal to a pump position with respect to a cam position of the internal combustion engine has the advantage that an automatic detection of the pump position is determined and this eliminates the effort to obstruct the pump with a specific orientation to the internal combustion engine, which takes place during assembly of the internal combustion engine.
  • very advantageous for detecting the pump orientation no additional sensor required, which would cause additional costs.
  • Another embodiment of the method which allows to detect a top dead center, provides that during a start of the internal combustion engine or in overrun, in which the internal combustion engine rotates without injection, the rail pressure is detected and that then, when the rail pressure increases, it it is concluded that a selected top dead center of the pump is in a rising cam flank and that the top dead center is moved in the direction of lower injection quantity until the rail pressure remains constant.
  • a further advantageous variant of the method according to the invention seeks a rising edge. This provides that during the start of the internal combustion engine or during the overrun operation, in which the internal combustion engine rotates without injection, the rail pressure is detected and, if the rail pressure remains constant, it is concluded that a selected top dead center lies in a falling cam flank and the high-pressure fuel pump delivers no fuel and that the top dead center is moved so long in the direction of larger injection amount until the pressure rises.
  • the detected rail pressure is corrected by a transit time of a pressure wave, so as to compensate for negative influences caused by the pressure wave.
  • a further variant of the method according to the invention provides that during a start of the internal combustion engine, the controllable intake valve, at least once more than delivery strokes exist, is controlled, wherein the control is offset by a geometric cam offset and that when, after a drive pulse, a pressure increase in Rail takes place, is closed on a rising edge, which is used as a reference for the control.
  • the computer program according to the invention is set up to carry out each step of the method, in particular if it runs on a computing device or a control device. It allows the implementation of the inventive method on an electronic control unit, without having to make structural changes to this.
  • the electronic storage medium is provided on which the computer program according to the invention is stored. By loading the computer program according to the invention onto an electronic control unit, the electronic control unit according to the invention is obtained, which is set up to carry out the method according to the invention.
  • the method according to the invention described below is used in high-pressure diesel pumps, in which the fuel metering is realized via an electrically actuated suction valve.
  • the timing of the control is decisive for the volume control.
  • the camshaft position must be known to allow timely driving.
  • the variants of the method according to the invention described below make it possible to determine the cam position on the internal combustion engine on the basis of the rail pressure signal.
  • the advantage of this automatic detection is that the effort during assembly eliminates the need to install the pump with a specific orientation. Pump orientation detection does not require an additional sensor, so there are no additional costs.
  • a suction valve is permanently energized, whereby the maximum delivery rate is reached, step 110, while another suction valve is deactivated, step 120.
  • a step 130 the rail pressure is detected.
  • a step 140 the time of a rail pressure rise is detected and corrected by a predetermined value, which compensates the time offset between actuation start and pressure detection on a rail pressure sensor.
  • This parameter which is determined beforehand, depends on the system design, the motor speed and the pumps: motor translation. This method allows the detection of the top dead center of the camshaft and thus the position of the pump, which is clearly assigned to the cam position.
  • Fig. 2 a further embodiment of the method is shown, which allows the detection of the top dead center.
  • the top dead center of the pump is set arbitrarily.
  • the angle at the beginning of the process does not matter and can therefore be set arbitrarily, since when not recognizing a pressure increase, the angle is varied.
  • a starting point should be specified. This can be, for example, 0 ° crank angle or also the last detected and stored value of the mounting angle.
  • the pump is removed and installed during the life of the engine. In this case, although the position of the pump prior to removal is known, but it is no longer after installation. For the detection then the last known angle can be used.
  • Step 210 the start of the internal combustion engine is shown.
  • Step 220 designates the activation of the intake valve 1 at 0 ° crankshaft angle.
  • Step 230 designates the activation of the suction valve 2 at a crankshaft angle of 180 °.
  • the detection can with a Pump element or with multiple pump elements, as long as the control is offset by the geometric cam offset, for example, two elements with two cams by 90 °. The geometric distance relative to the rotation of the camshaft is always the same. If a pump with two high-pressure elements and two cams is used, this means that each pump element is actuated twice in one revolution.
  • step 251 is the selected top dead center in the falling cam edge and the pump does not deliver fuel. Now, the top dead center is shifted toward the larger injection amount, step 252, until the pressure rises, which is detected in step 253.
  • step 260 the time found is corrected by the transit time of the pressure wave.
  • step 310 at least one intake valve is energized several times, at least three times per 180 ° crankshaft angle.
  • the detection can be carried out with one pump element or with several pump elements as long as the control is offset by the geometric cam offset, eg two elements with two cams each by 90 °.
  • step 320 the control of a suction valve 1 is shown at 0 ° camshaft angle and in step 330, the control of a suction valve 2 at 180 ° camshaft angle. If a pressure increase occurs after such a drive pulse, which is detected in step 340, the rising edge is found and used as a reference for the drive, step 350.
  • the rail pressure regulator becomes allows the pump delivery to be adjusted freely, without upper and lower limits, step 370.
  • the setpoint pressure, step 380 is reached, the pump attachment is corrected by means of the regulator output and pilot control, step 385, and the control returns to normal operation, step 390.
  • the method can be implemented in a control unit of an internal combustion engine as a computer program.
  • the computer program can be stored on an electronic storage medium which can be read in by the control unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP15191875.2A 2014-11-14 2015-10-28 Procédé de reconnaissance de l'orientation d'une pompe à carburant haute pression Withdrawn EP3020946A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014223322.4A DE102014223322A1 (de) 2014-11-14 2014-11-14 Verfahren zur Erkennung der Pumpenorientierung einer Kraftstoffhochdruckpumpe

Publications (1)

Publication Number Publication Date
EP3020946A1 true EP3020946A1 (fr) 2016-05-18

Family

ID=54360935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15191875.2A Withdrawn EP3020946A1 (fr) 2014-11-14 2015-10-28 Procédé de reconnaissance de l'orientation d'une pompe à carburant haute pression

Country Status (3)

Country Link
EP (1) EP3020946A1 (fr)
CN (1) CN105604718A (fr)
DE (1) DE102014223322A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019206601A1 (fr) * 2018-04-27 2019-10-31 Robert Bosch Gmbh Procédé permettant de faire fonctionner une soupape d'aspiration électrique dans un système common-rail et dispositif permettant la mise en œuvre du procédé
WO2019206603A1 (fr) * 2018-04-27 2019-10-31 Robert Bosch Gmbh Procédé de fonctionnement d'une pompe haute pression dans un système de rampe commune, ainsi que dispositif pour la mise en œuvre dudit procédé
CN114060190A (zh) * 2020-07-31 2022-02-18 长城汽车股份有限公司 高压油泵上止点位置自学习方法、轨压控制方法、车辆控制器及车辆
CN115434840A (zh) * 2022-09-28 2022-12-06 卓品智能科技无锡股份有限公司 介入式识别发动机泵油时刻的方法、装置及存储介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015217689A1 (de) 2015-09-16 2017-03-16 Robert Bosch Gmbh Verfahren zum Betreiben einer Hochdruckpumpe
DE102016216978A1 (de) * 2016-09-07 2018-03-08 Robert Bosch Gmbh Verfahren zur Ansteuerung einer Hochdruckpumpe für die Kraftstoffeinspritzung in einen Verbrennungsmotor
DE102016218426B3 (de) 2016-09-26 2018-02-01 Continental Automotive Gmbh Verfahren zum Betreiben einer Hochdruckpumpe eines Hochdruckeinspritzsystems eines Kraftfahrzeugs sowie Steuervorrichtung und Kraftfahrzeug
FR3060657B1 (fr) * 2016-12-15 2020-12-25 Continental Automotive France Procede d'estimation d'un point mort haut pour une pompe haute pression d'un systeme d'injection de carburant dans un moteur de vehicule automobile
US11136935B2 (en) * 2018-04-10 2021-10-05 Cummins Inc. Adaptive high pressure fuel pump system and method for predicting pumped mass
CN112682142A (zh) * 2020-12-23 2021-04-20 潍柴动力股份有限公司 一种篡改检测方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10115262A1 (de) * 2001-03-28 2002-10-24 Bosch Gmbh Robert Verfahren zur Ermittlung der Drehlage der Nockenwelle einer Verbrennungskraftmaschine
DE102006031569B3 (de) * 2006-07-07 2008-03-27 Siemens Ag Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
EP2634407A1 (fr) * 2012-02-29 2013-09-04 Volvo Car Corporation Système de détermination de positionnement d'arbre à cames

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10115262A1 (de) * 2001-03-28 2002-10-24 Bosch Gmbh Robert Verfahren zur Ermittlung der Drehlage der Nockenwelle einer Verbrennungskraftmaschine
DE102006031569B3 (de) * 2006-07-07 2008-03-27 Siemens Ag Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
EP2634407A1 (fr) * 2012-02-29 2013-09-04 Volvo Car Corporation Système de détermination de positionnement d'arbre à cames

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019206601A1 (fr) * 2018-04-27 2019-10-31 Robert Bosch Gmbh Procédé permettant de faire fonctionner une soupape d'aspiration électrique dans un système common-rail et dispositif permettant la mise en œuvre du procédé
WO2019206603A1 (fr) * 2018-04-27 2019-10-31 Robert Bosch Gmbh Procédé de fonctionnement d'une pompe haute pression dans un système de rampe commune, ainsi que dispositif pour la mise en œuvre dudit procédé
CN114060190A (zh) * 2020-07-31 2022-02-18 长城汽车股份有限公司 高压油泵上止点位置自学习方法、轨压控制方法、车辆控制器及车辆
CN114060190B (zh) * 2020-07-31 2022-08-23 长城汽车股份有限公司 高压油泵上止点位置自学习方法、轨压控制方法、车辆控制器及车辆
CN115434840A (zh) * 2022-09-28 2022-12-06 卓品智能科技无锡股份有限公司 介入式识别发动机泵油时刻的方法、装置及存储介质
CN115434840B (zh) * 2022-09-28 2023-09-12 卓品智能科技无锡股份有限公司 介入式识别发动机泵油时刻的方法、装置及存储介质

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Publication number Publication date
DE102014223322A1 (de) 2016-05-19
CN105604718A (zh) 2016-05-25

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