EP0183038A2 - Dispositif d'injection de carburant dans la chambre de combustion d'un moteur à allumage par compression - Google Patents

Dispositif d'injection de carburant dans la chambre de combustion d'un moteur à allumage par compression Download PDF

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Publication number
EP0183038A2
EP0183038A2 EP85113156A EP85113156A EP0183038A2 EP 0183038 A2 EP0183038 A2 EP 0183038A2 EP 85113156 A EP85113156 A EP 85113156A EP 85113156 A EP85113156 A EP 85113156A EP 0183038 A2 EP0183038 A2 EP 0183038A2
Authority
EP
European Patent Office
Prior art keywords
temperature
exhaust gas
controlled
glow
gas temperature
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Withdrawn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
EP85113156A
Other languages
German (de)
English (en)
Other versions
EP0183038A3 (fr
Inventor
Iwan Komaroff
Ernst Imhof
Günther Schmid
Gerhard Wölffing-Seelig
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 EP0183038A2 publication Critical patent/EP0183038A2/fr
Publication of EP0183038A3 publication Critical patent/EP0183038A3/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Withdrawn legal-status Critical Current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
    • F02D41/02—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
    • F02D41/1446—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 exhaust temperatures
    • 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
    • F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a device for injecting fuel according to the preamble of the main claim.
  • the glow element consists of a material whose electrical resistance value is temperature-dependent. This material property is used to simultaneously assign the function of a sensor for an evaluation circuit for the combustion process to the incandescent body.
  • the incandescent body from a material with a temperature-dependent resistance value even in the devices of the generic type and to use the respective resistance value of the incandescent body to regulate the temperature of the incandescent body.
  • the precious metal platinum and its alloys would be preferred as the material because, in addition to the required electrical properties, it also the other bean can withstand spells in the combustion chamber.
  • these precious metals are expensive and the other, much cheaper heat and corrosion-resistant heating conductor materials have the property that their electrical resistance value depends only to a very small extent or not at all on the temperature, which makes temperature control impossible in the event of a changing ambient temperature because of the Radiator is cooled or heated even without power supply.
  • the device according to the invention with the characterizing features of the main claim has the advantage that the annealing temperature can be controlled without the incandescent body having to be made of a noble metal. If an exhaust gas temperature sensor is already present in the machine, no additional circuitry measures are required apart from a corresponding addition to the control unit.
  • a map for the exhaust gas temperature as a function of the load and speed can be determined for each machine. Through experiments, an optimal glow element temperature can be assigned to each exhaust gas temperature and the control voltage or heating current required to achieve this glow element temperature can be determined.
  • Figure 1 shows part of an internal combustion engine in section and the associated control means for the glow plug in a schematic representation.
  • Figure 2 the combustion chamber end of the injector of Figure 1 and the downstream glow plug are shown in section.
  • the device according to the invention has an injection nozzle 10 which is installed in the cylinder head 12 of an internal combustion engine.
  • the injection nozzle 10 has a nozzle body 14 which is clamped to a nozzle holder by a union nut 16.
  • a valve seat 18 is formed in the nozzle body 14 and a valve needle 20 is slidably mounted.
  • the nozzle body 14 contains a fuel channel 22 which opens into a pressure chamber 26 surrounding the valve needle 20 in the region of a pressure shoulder 24.
  • the increasing fuel pressure in the pressure chamber 26 lifts the valve needle 20 against the force of a closing spring, not shown, from the valve seat 18, after which the fuel reaches the combustion chamber in the form of a spray jet 27.
  • One helical end 34 is through a recess 36 in the housing 28 performed and connected to a conductor 38 which is guided via a glass melt 40 and a longitudinal groove 42 in the union nut 16 and is connected to an external connection 44 ( Figure 1).
  • the other coil end 46 of the incandescent body 32 is connected to the housing 28 and, via this, the union nut 16, a sealing ring 47 and the cylinder head 12 to ground.
  • Bores 48, 49 are provided in the housing 28, through which the spray jets 27 suck air from the combustion chamber into the glow body 32, where there is good premixing of the air with the fuel, at least in peripheral zones of the spray jets.
  • an exhaust valve 51 is arranged at the beginning of an exhaust pipe 52, in which a temperature sensor 54 is installed.
  • the output signal T A of the temperature sensor 54 is fed to a control unit 56, which is programmed in accordance with the data of an engine map 58.
  • a signal n corresponding to the rotational speed and a signal T K corresponding to the cooling water temperature are fed to the control unit 56.
  • a current source 60 feeds a heating circuit 62, which leads to the spray opening of the injection nozzle 10 via the control device 56 and the glow body 32.
  • the incandescent body 32 is heated to a greater or lesser extent by the combustion gases depending on the speed and load.
  • This thermal load on the incandescent body 32 which is caused by environmental influences, is detected according to the invention by measuring the exhaust gas temperature and in the control unit 56 to form a current in the heating circuit 62 regulating output signal U v processed. This can preferably be done in such a way that the heating current is controlled in accordance with the temperature difference between the prevailing exhaust gas temperature and a glow element temperature assigned to this exhaust gas temperature as intended.
  • the speed signal n and / or the load-dependent signal T K can also be used as further information for forming the output signal U V.
  • the glow attachments are preferably connected in parallel to the control unit 56.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)
EP85113156A 1984-11-27 1985-10-17 Dispositif d'injection de carburant dans la chambre de combustion d'un moteur à allumage par compression Withdrawn EP0183038A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3443201 1984-11-27
DE19843443201 DE3443201A1 (de) 1984-11-27 1984-11-27 Einrichtung zum einspritzen von kraftstoff in brennraeume von insbesondere selbstzuendenden brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0183038A2 true EP0183038A2 (fr) 1986-06-04
EP0183038A3 EP0183038A3 (fr) 1987-04-29

Family

ID=6251269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113156A Withdrawn EP0183038A3 (fr) 1984-11-27 1985-10-17 Dispositif d'injection de carburant dans la chambre de combustion d'un moteur à allumage par compression

Country Status (3)

Country Link
EP (1) EP0183038A3 (fr)
JP (1) JPS61132768A (fr)
DE (1) DE3443201A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323204A1 (fr) * 1987-12-26 1989-07-05 Isuzu Motors Limited Dispositif d'allumage pour moteur
EP1270936A3 (fr) * 2001-06-29 2004-05-12 Isuzu Motors Limited Dispositif de contrôle d'excitation de bougie à incandescence

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224344A1 (de) * 1992-07-23 1994-01-27 Bayerische Motoren Werke Ag Mit einer Glühvorrichtung kombinierte Einspritzdüse für luftverdichtende Einspritzbrennkraftmaschinen
DE102017216553A1 (de) 2017-09-19 2019-03-21 Robert Bosch Gmbh Gaseinblasventil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730428Y2 (fr) * 1978-06-30 1982-07-03
JPS55114877A (en) * 1979-02-26 1980-09-04 Diesel Kiki Co Ltd Auxiliary starter of diesel engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323204A1 (fr) * 1987-12-26 1989-07-05 Isuzu Motors Limited Dispositif d'allumage pour moteur
US4947808A (en) * 1987-12-26 1990-08-14 Isuzu Motors Limited Igniting device for engine
EP1270936A3 (fr) * 2001-06-29 2004-05-12 Isuzu Motors Limited Dispositif de contrôle d'excitation de bougie à incandescence

Also Published As

Publication number Publication date
DE3443201A1 (de) 1986-05-28
EP0183038A3 (fr) 1987-04-29
JPS61132768A (ja) 1986-06-20

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Inventor name: WOELFFING-SEELIG, GERHARD

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Inventor name: KOMAROFF, IWAN