EP0764817A1 - Régulation de vitesse - Google Patents

Régulation de vitesse Download PDF

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Publication number
EP0764817A1
EP0764817A1 EP96114449A EP96114449A EP0764817A1 EP 0764817 A1 EP0764817 A1 EP 0764817A1 EP 96114449 A EP96114449 A EP 96114449A EP 96114449 A EP96114449 A EP 96114449A EP 0764817 A1 EP0764817 A1 EP 0764817A1
Authority
EP
European Patent Office
Prior art keywords
air
fuel
pump
preparation system
speed
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Withdrawn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
EP96114449A
Other languages
German (de)
English (en)
Inventor
Adrian Zingalik
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.)
ERNST-Apparatebau GmbH and Co
Original Assignee
ERNST-Apparatebau GmbH and Co
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 ERNST-Apparatebau GmbH and Co filed Critical ERNST-Apparatebau GmbH and Co
Publication of EP0764817A1 publication Critical patent/EP0764817A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/26—Fail safe for clogging air inlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/26—Fuel nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/30—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/14—Vehicle heating, the heat being derived otherwise than from the propulsion plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/08—Regulating air supply or draught by power-assisted systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties

Definitions

  • the invention relates to a mixture preparation system for a burner with a fuel feed pump driven by a first electric motor, which pumps the fuel from a fuel tank to a nozzle or a burner chamber, and a further pump driven by a second electric motor, which pumps air to the nozzle or into the burner chamber.
  • the pumps that pump the fuel and air to the injection nozzle or the combustion chamber are driven at a constant speed by means of electric motors. This means that if the electric motors are switched on, the pumps deliver constant amounts of fuel or air.
  • the fuel control in these oil burners mostly consists of clocked or proportional solenoid valves, which open or close the fuel or air supply as required.
  • the object of the invention is to provide a mixture preparation system which does not require additional control devices located in the fuel or air supply line, as a result of which fewer mechanical parts are required and the system is therefore more reliable, smaller, more compact and cheaper to manufacture and more reliable in operation and control / regulation becomes.
  • This object is achieved in that the speed of the one and / or the other electric motor can be adjusted or regulated, in particular continuously, by means of a speed controller.
  • Such a mixture preparation system has the advantage that the speed range of the pumps between standstill and a nominal speed can be adjusted or adjusted as desired, so that the fuel or air quantities delivered by the pumps can be adjusted precisely.
  • the speed controllers are advantageously connected to a controller or regulator, this controller being connected to sensors which, for. B. the combustion temperature, the exhaust gas or combustion mixture ratio or their composition before and / or after the combustion, the speed or the speed range of an internal combustion engine.
  • Such a control can regulate the volume flows conveyed by means of the pumps as required and according to the system state, as a result of which an optimal mixture ratio or an optimal mixture composition and mixture quantity can be set or regulated. In this way, optimal combustion of the fuel can advantageously be achieved.
  • a sensor analyzes the exhaust gases of the engine and the control system adjusts or regulates the speed or delivery quantities of the two pumps in such a way that the quantity ratio of air to fuel changes in the event of incomplete combustion of the fuel. This advantageously saves fuel and reduces soot formation.
  • the soot on the filter candles is burned off at regular intervals by means of the burner, the soot can be burned off more effectively and more quickly by better combustion of the fuel mixture injected into the burner, as a result of which the burning-off or regeneration phases are shortened and there is also less soot.
  • At least one sensor measures the temperature in or on the internal combustion engine or burner and a signal corresponding to the temperature is transmitted to the control and the control changes the quantitative ratio of air to fuel as soon as the determined temperature exceeds or falls below a temperature threshold. Precise temperature control of the combustion temperature can thus be achieved due to the very quickly changing mixture formation.
  • Such a mixture preparation system can also advantageously be used for nozzle cleaning, the control system stopping the electric motor driving the fuel delivery pump and adjusting the speed of the electric motor that drives the air-conveying pump in such a way that the amount of air delivered is just sufficient to keep the nozzle free of contamination or to remove dirt, especially soot.
  • nozzle cleaning is advantageously carried out outside the regeneration phases, i.e. during the time when the soot of the filter cartridges is not burned off.
  • the amount of air required for this can be kept so low by means of the speed control that the current consumption of the electric motor remains negligibly small. Since the amount of purge air from the nozzle is no longer drawn from the vehicle air pressure network, greater operational reliability of the vehicle is also achieved.
  • Another advantage of such a control by means of a speed controller is that the direction of rotation of the electric motor in question, in particular of the electric motor driving the air pump, is reversible, which advantageously allows air to either be conveyed into the burner chamber or air from the environment to a reverse side by means of a second suction line Intake direction can be promoted, wherein an intake air filter mounted in the air intake line can be freed from coarse dust particles and / or condensed water. As a result, the wading intervals for the air filter can be extended and the operational safety of the entire system can be increased.
  • the drawing shows a block diagram of the mixture preparation system.
  • the mixture preparation system consists of two pumps 3, 4, which are driven by the motors 5, 6.
  • the pumps 3, 4 are driven by the motors 5, 6 via shafts or gears 19, 20.
  • Each motor 5, 6 is electrically connected by means of the connecting lines 10, 11 to an associated speed controller 7, 8.
  • the speed controllers 7, 8 are supplied via external voltage supplies 22, 23.
  • the controller 9 uses the data lines 17, 18 to specify the speed controllers 7, 8 setpoints. Depending on the mode of operation of the speed controller, a speed corresponding to the setpoint is adjusted for the respective electric motor by means of the speed controller.
  • the pump suction side of the pump 3 delivering the fuel is connected to a fuel tank 14 by means of a fuel supply line 16.
  • the pump outlet of the pump 3 is connected to the burner nozzle or the burner chamber 2 by means of a feed line 12.
  • the pump suction side of the air-conveying pump 4 is connected to an air suction line 15, in which there is an air filter 24 for cleaning the sucked-in ambient air.
  • the pump outlet of the pump 4 is connected to the burner nozzle or the burner chamber 2 by means of a feed line 13.
  • the pump outlet side of the pump 4 can be connected to the ambient air by means of a further supply line 26.
  • the pump 4 can pump in both directions, additional blocking valves 25, 27 being necessary which, on the one hand, prevent the air pumped to the burner chamber 2 from entering the environment via the supply line 26 during the normal operation of the mixture preparation system and on the other hand prevent it that during the cleaning phase of the Filters 24 gases from the burner chamber 2 are pumped into the environment via the feed line 13.
  • the valves 25, 27 can be normal mechanical or electronically controlled shut-off valves.
  • the internal combustion engine 1 can have a soot particle filter system, which is not shown in the block diagram.
  • the sensors also not shown in the block diagram, which determine certain temperatures or the operating state of the internal combustion engine in the burner chamber 2 and / or the internal combustion engine 1, are connected to the controller 9 by means of signal lines and / or data lines 21.
  • the controller 9 evaluates the data determined by the sensors and uses the data or signal lines 17, 18 to transmit the required values to the speed controllers 7, 8. The complete control loop is thus closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)
EP96114449A 1995-09-25 1996-09-10 Régulation de vitesse Withdrawn EP0764817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19535507A DE19535507A1 (de) 1995-09-25 1995-09-25 Drehzahlregelung
DE19535507 1995-09-25

Publications (1)

Publication Number Publication Date
EP0764817A1 true EP0764817A1 (fr) 1997-03-26

Family

ID=7773049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114449A Withdrawn EP0764817A1 (fr) 1995-09-25 1996-09-10 Régulation de vitesse

Country Status (2)

Country Link
EP (1) EP0764817A1 (fr)
DE (1) DE19535507A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006316A1 (fr) * 1998-11-30 2000-06-07 Hamworthy Combustion Engineering Limited Systèmes de brûleurs à mazout

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164627A (ja) * 1984-02-06 1985-08-27 Hitachi Ltd 燃料ノズルパ−ジシステム装置
JPS63156915A (ja) * 1986-12-19 1988-06-30 Matsushita Electric Ind Co Ltd 暖房用燃焼器のコントロ−ラ
JPH04265328A (ja) * 1991-02-19 1992-09-21 Matsushita Electric Ind Co Ltd 脱臭装置
EP0615095A1 (fr) * 1993-03-11 1994-09-14 Landis & Gyr Technology Innovation AG Automate à brûleur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6813031U (de) * 1968-12-23 1972-01-27 Licentia Gmbh Oelbrenneraggregat.
DK145685C (da) * 1976-04-26 1983-08-08 Lars Leksander Slyn Joergensen Fremgangsmaade og apparat til regulering af forbraendingen i et fyr
DE59304547D1 (de) * 1993-03-08 1997-01-02 Landis & Gyr Tech Innovat Steuereinrichtung für Brenner von Heizungsanlagen oder dergleichen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164627A (ja) * 1984-02-06 1985-08-27 Hitachi Ltd 燃料ノズルパ−ジシステム装置
JPS63156915A (ja) * 1986-12-19 1988-06-30 Matsushita Electric Ind Co Ltd 暖房用燃焼器のコントロ−ラ
JPH04265328A (ja) * 1991-02-19 1992-09-21 Matsushita Electric Ind Co Ltd 脱臭装置
EP0615095A1 (fr) * 1993-03-11 1994-09-14 Landis & Gyr Technology Innovation AG Automate à brûleur

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 333 (M - 443) 27 December 1985 (1985-12-27) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 419 (M - 760) 8 November 1988 (1988-11-08) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 053 (M - 1361) 3 February 1993 (1993-02-03) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006316A1 (fr) * 1998-11-30 2000-06-07 Hamworthy Combustion Engineering Limited Systèmes de brûleurs à mazout

Also Published As

Publication number Publication date
DE19535507A1 (de) 1997-03-27

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