EP0319597A1 - Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel - Google Patents

Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel Download PDF

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Publication number
EP0319597A1
EP0319597A1 EP87118081A EP87118081A EP0319597A1 EP 0319597 A1 EP0319597 A1 EP 0319597A1 EP 87118081 A EP87118081 A EP 87118081A EP 87118081 A EP87118081 A EP 87118081A EP 0319597 A1 EP0319597 A1 EP 0319597A1
Authority
EP
European Patent Office
Prior art keywords
gas oil
fuel
flow
filter
paraffin
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Withdrawn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
EP87118081A
Other languages
German (de)
English (en)
Inventor
István Dipl.-Ing. Spissàk
Barna Dipl.-Ing. Hanula
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.)
"transinnov" Kozlekedesi Mueszaki Fejleszto Leanyvallalat
Original Assignee
"transinnov" Kozlekedesi Mueszaki Fejleszto Leanyvallalat
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 "transinnov" Kozlekedesi Mueszaki Fejleszto Leanyvallalat filed Critical "transinnov" Kozlekedesi Mueszaki Fejleszto Leanyvallalat
Priority to EP87118081A priority Critical patent/EP0319597A1/fr
Publication of EP0319597A1 publication Critical patent/EP0319597A1/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Withdrawn legal-status Critical Current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
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/36—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements with bypass means
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125—Fuel

Definitions

  • the invention relates to a method and a device by means of which the cold operating options of internal combustion engines (diesel engines) operated with gas oil fuel can be improved.
  • the invention ensures the pumpability of the gas oil fuel under the influence of cold even with paraffin which is emitted from the fuel, and prevents the flow of the amount of fuel required for the correct operation of the engine from being reduced or made impossible by clogged filters.
  • Cold starting and cold running diesel engines encounter two well-known difficulties: -
  • the temperature of the air compressed in the cylinder head (combustion chamber) at the end of the compression stroke does not always reach the ignition temperature of the injected fuel when the engine is cold at the engine speed specified by the starter. Numerous methods are known for solving this problem.
  • the fuel gas oil
  • the gas oil flow can also be interrupted during operation if the temperature of the fuel continues to decrease compared to the starting condition. In this case, the diesel engine that is already running begins to stall and even stops in most cases and can only be restarted after the blockage has been removed.
  • the fundamental cause of the malfunction described in the second part is the dewaxing of the gas oil.
  • the motor fuels including the gas oil, are contaminated to a certain degree even with the most thorough manufacturing and storage technology and must therefore be filtered before they reach the very fine-tuned feed or atomizer elements.
  • the filtration is traditionally carried out in three stages in the engines used today.
  • the first stage is a pre-filter, which is either located directly in front of the fuel pump or less frequently in the fuel tank.
  • the pre-filter is a relatively coarse sieve filter.
  • the two other stages form a fine filter system, which is arranged directly in front of the fuel pump. Its coarser element is generally formed by a felt insert, the finer element by a paper insert.
  • the ambient temperature at which the first malfunctions appear can best be identified with the cold filtering point (CFPP) of the gas oil.
  • CFPP cold filtering point
  • the disadvantage of this measure is that the cooling water has such a thermal energy only 20 to 30 minutes after starting that the wax crystals dissolve.
  • the aim of the invention is to develop a method and a device by means of which the cold operation of the diesel engines operated with gas oil fuel is improved and the disadvantages and deficiencies described can be avoided.
  • the gas oil that reaches the main feed channel and possibly also contains paraffin is led to the combustion chamber with complete security by the feed elements.
  • a fuel pump 5 begins to draw gas oil from the container during operation. If the gas oil contains so much paraffin that the fuel pump is unable to draw in the gas oil during normal operation, there is no pressure switch 6 Pressure. In this case, the fuel submersible pump 1 driven by an electric motor 2 begins to work in the fuel tank, from which the fuel is conveyed to a pre-filter 4.
  • the pre-filter 4 is very likely to be clogged by the paraffin in a short time; therefore a bypass valve 3 according to FIG. 2 opens, by means of which the gas oil flow in the direction of a main filter 7 is ensured.
  • a bypass valve 9 opens so that the fuel gets into the injection pump. If the starting capacity of the starter and the temperature of the intake air are appropriate, there is no obstacle to starting.
  • heating inserts 10, 11, 12 in the exhaust branch, in the fuel tank and in the main filters 7 in the fuel supply system.
  • the different engine and fuel supply systems of the different vehicle types require individual preheating designs.
  • the heating inserts can - electrically via the vehicle battery - using the thermal energy of the cooling water, - using the thermal energy of the exhaust gas, - using other waste energy operate.
  • An exemplary embodiment of the pre-filter 4 and bypass valve 3 shown in FIG. 2 operates as follows:
  • the gas oil flows in the pre-filter 4 arranged in front of the fuel pump 5 through an inlet bore 13, a filter fabric 14 and an outlet bore 17.
  • the gas oil enters through a feed pipe 18 and exits through an outlet pipe 21 via a flow screw in the filter system 7.
  • the method and the device according to the invention have their primary area of use in the improvement of the fuel supply system of diesel engines operated with gas oil in winter operation. This creates the possibility of starting vehicles in extreme cold (- 20 ° C, - 30 ° C) and keeping them operational, even with gas oils with poor cold properties (paraffin waxing).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP87118081A 1987-12-07 1987-12-07 Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel Withdrawn EP0319597A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP87118081A EP0319597A1 (fr) 1987-12-07 1987-12-07 Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87118081A EP0319597A1 (fr) 1987-12-07 1987-12-07 Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel

Publications (1)

Publication Number Publication Date
EP0319597A1 true EP0319597A1 (fr) 1989-06-14

Family

ID=8197494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118081A Withdrawn EP0319597A1 (fr) 1987-12-07 1987-12-07 Dispositif pour l'amélioration du fonctionnement à froid des moteurs diesel

Country Status (1)

Country Link
EP (1) EP0319597A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154147A2 (fr) 2000-05-11 2001-11-14 Bayerische Motoren Werke Aktiengesellschaft Dispositif d'alimentation en carburant pour moteur diesel
US9328705B2 (en) 2014-07-28 2016-05-03 Ford Global Technologies, Llc Diesel fuel gelling determination method
CN111691931A (zh) * 2020-05-23 2020-09-22 大唐双鸭山热电有限公司 一种盘车顶轴油泵控制系统
CN111810331A (zh) * 2020-06-05 2020-10-23 东风商用车有限公司 一种气驱式液体燃料供给系统及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648877C (de) * 1937-08-10 Hugo Laderer Spaltfilter, insbesondere fuer Brennkraftmaschinen
US2617535A (en) * 1948-11-05 1952-11-11 United Aircraft Prod Filter unit
AT370214B (de) * 1979-04-19 1983-03-10 Oemv Ag Einrichtung zur foerderung von kraftstoff, vorzugsweise dieselkraftstoff, zu einem motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648877C (de) * 1937-08-10 Hugo Laderer Spaltfilter, insbesondere fuer Brennkraftmaschinen
US2617535A (en) * 1948-11-05 1952-11-11 United Aircraft Prod Filter unit
AT370214B (de) * 1979-04-19 1983-03-10 Oemv Ag Einrichtung zur foerderung von kraftstoff, vorzugsweise dieselkraftstoff, zu einem motor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 70 (M-367)[1793], 30. März 1985; & JP - A - 59 201 965 (TOYOTA) 15.11.1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154147A2 (fr) 2000-05-11 2001-11-14 Bayerische Motoren Werke Aktiengesellschaft Dispositif d'alimentation en carburant pour moteur diesel
US9328705B2 (en) 2014-07-28 2016-05-03 Ford Global Technologies, Llc Diesel fuel gelling determination method
CN111691931A (zh) * 2020-05-23 2020-09-22 大唐双鸭山热电有限公司 一种盘车顶轴油泵控制系统
CN111810331A (zh) * 2020-06-05 2020-10-23 东风商用车有限公司 一种气驱式液体燃料供给系统及其使用方法

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Inventor name: SPISSAK, ISTVAN, DIPL.-ING.

Inventor name: HANULA, BARNA, DIPL.-ING.