EP0268811A1 - Brennstoffeinspritzanordnung einer Kolbenbrennkraftmaschine - Google Patents

Brennstoffeinspritzanordnung einer Kolbenbrennkraftmaschine Download PDF

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Publication number
EP0268811A1
EP0268811A1 EP87115163A EP87115163A EP0268811A1 EP 0268811 A1 EP0268811 A1 EP 0268811A1 EP 87115163 A EP87115163 A EP 87115163A EP 87115163 A EP87115163 A EP 87115163A EP 0268811 A1 EP0268811 A1 EP 0268811A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
fuel injection
fuel
nozzle
head part
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Withdrawn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
EP87115163A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wilfried Pernter
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0268811A1 publication Critical patent/EP0268811A1/de
Withdrawn legal-status Critical Current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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials

Definitions

  • the invention relates to a fuel injection arrangement of a piston internal combustion engine, which has at least one cylinder closed by a cylinder cover with a piston movable therein, which delimits a combustion chamber with the cylinder cover, with at least one fuel injection valve connected to a fuel supply system, which has a nozzle body arranged in a passage opening in the cylinder cover , which is provided with a head part projecting into the combustion chamber with at least one nozzle opening, which is used to form a fuel jet directed into the combustion chamber.
  • the head part of the nozzle body containing the nozzle openings consists of a steel alloy which is more or less subject to wear and tear due to corrosion and erosion during operation of the internal combustion engine.
  • the fuel used - especially in diesel internal combustion engines that are constantly operated with heavy oil - can cause the non-combustible components of the fuel that melt in the combustion chamber at correspondingly high temperatures, which accumulate in the form of slags and oil tabs, to protrude into the combustion chamber due to high-temperature corrosion endanger.
  • the object of the invention is to improve the fuel injection valve in the arrangement mentioned at the outset in such a way that the wear on the head part projecting into the combustion chamber is drastically reduced or avoided entirely.
  • the nozzle head consists of a titanium-based alloy which, apart from impurities caused by production, contains 2 to 10% aluminum, 0 to 55% niobium, 0 to 10% zirconium, 0 to 6% molybdenum, 0 to 1% silicon and 0 contains up to 10% tantalum.
  • the head part made of the titanium-based alloy is much better resistant to high-temperature corrosion than the known head part made of a steel alloy, which is attributed to the fact that the titanium alloy forms corrosion-resistant, dense and well-adhering passive layers during operation of the internal combustion engine. Thanks to this behavior, the wear of the head part is greatly reduced compared to that of a steel alloy, which results in a significantly increased service life of the head part. It is therefore less common than before to remove the fuel valve in order to replace the head part, which increases the availability of the internal combustion engine.
  • the fuel injection arrangement of a diesel internal combustion engine comprises a cylinder cover 1 which, together with a piston 3 moving up and down in a cylinder 2, delimits a combustion chamber 4, and a fuel injection valve, designated as a whole by 5.
  • the injection valve 5 has a housing-like nozzle body, which in this example is composed of the parts 6, 7, 8 and 9.
  • the uppermost part 6 has a threaded shoulder 6 'which is screwed to a union nut 10 which holds the parts 6 to 9 together.
  • a rod 12 In a central bore 11 of the uppermost part 6 there is a rod 12, which is loaded at its upper end, not shown in the drawing, by a compression spring and rests on a valve needle 13 with its lower end.
  • valve needle 13 is guided in a bore 22 of the part 7 adjoining the part 6.
  • its bore 22 forms a conical valve seat surface 14 which interacts with the correspondingly conical lower end of valve needle 13.
  • a space 15 is recessed above the seat 14, to which fuel is fed from a fuel supply system (not shown) under high pressure via a bore 16, 17 in part 7 or 6.
  • the part 7 is surrounded in its lower area by the sleeve-shaped part 8, which forms an inwardly projecting shoulder 18 at its lower end, on which the part 9 rests with a flange 9 ⁇ .
  • the part 9, which forms the head part of the injection valve 5, has a central bore 20 which adjoins the bore 22 of the part 7 and is closed at the lower end. With its lower end, the head part 9 projects into the furnace space 4.
  • At the lower end of the head part a plurality of nozzle bores 21 are provided, each of which serves to form a fuel jet directed into the combustion chamber 4.
  • a shrink connection can exist between the head part 9 and the part 8 surrounding it.
  • the head part 9 consists of a titanium-based alloy, which e.g. has the following composition: 6% aluminum, 5% zirconium, 0.5% molybdenum, 0.25% silicon and the rest titanium. It has been shown that a head part made from this titanium alloy achieves very good results with regard to resistance to high-temperature corrosion, so that the service life of the head part is significantly increased compared to that made from a steel alloy.
  • the fuel is supplied to the space 15 in cycles with a pressure of, for example, 800 bar via the bores 17 and 16, as a result of which the valve needle 13 is lifted off the seat surface 14 against the closing pressure of the spring acting on the rod 12, so that the Fuel can now reach the nozzle bores 21 via the bore 20 of the head part 9 and from there enters the combustion chamber 4 filled with compressed air as jets.
  • the stroke of the valve needle 13 is approximately 1.2 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP87115163A 1986-11-25 1987-10-16 Brennstoffeinspritzanordnung einer Kolbenbrennkraftmaschine Withdrawn EP0268811A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4720/86 1986-11-25
CH4720/86A CH671074A5 (enrdf_load_stackoverflow) 1986-11-25 1986-11-25

Publications (1)

Publication Number Publication Date
EP0268811A1 true EP0268811A1 (de) 1988-06-01

Family

ID=4281336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115163A Withdrawn EP0268811A1 (de) 1986-11-25 1987-10-16 Brennstoffeinspritzanordnung einer Kolbenbrennkraftmaschine

Country Status (5)

Country Link
EP (1) EP0268811A1 (enrdf_load_stackoverflow)
JP (1) JPS63143382A (enrdf_load_stackoverflow)
CH (1) CH671074A5 (enrdf_load_stackoverflow)
DK (1) DK489287A (enrdf_load_stackoverflow)
FI (1) FI874355A7 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569655A1 (de) * 1992-05-11 1993-11-18 New Sulzer Diesel AG Düsenkopf für eine Kraftstoff-Einspritzvorrichtung
CN108893628A (zh) * 2018-08-03 2018-11-27 中鼎特金秦皇岛科技股份有限公司 一种低弹性模量耐腐蚀钛合金及其制备方法
CN112176219A (zh) * 2020-09-28 2021-01-05 哈尔滨工业大学 一种Ti-Al-Nb-Zr-Mo耐腐蚀钛合金及其制备方法
US11873547B2 (en) 2020-10-15 2024-01-16 Cummins Inc. Fuel system components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561653A (zh) * 2013-10-11 2015-04-29 东港市东方高新金属材料有限公司 一种钛合金dfgx-11#轧制管及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779782A (fr) * 1933-10-19 1935-04-12 & Commerciale Des Aciers Soc I Tuyères à combustible en métal dur pour moteurs à combustion interne, en particulier pour moteurs diesel
GB450522A (en) * 1934-10-13 1935-04-23 Tool Metal Mfg Company Ltd Improvements in and relating to fuel nozzles for internal combustion engines
GB885627A (en) * 1959-09-15 1961-12-28 Goetaverken Ab Improvements in fuel injection valves for internal combustion engines
DE2932433A1 (de) * 1979-08-10 1981-02-26 Bosch Gmbh Robert Einspritzventil fuer kraftstoffeinspritzanlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779782A (fr) * 1933-10-19 1935-04-12 & Commerciale Des Aciers Soc I Tuyères à combustible en métal dur pour moteurs à combustion interne, en particulier pour moteurs diesel
GB450522A (en) * 1934-10-13 1935-04-23 Tool Metal Mfg Company Ltd Improvements in and relating to fuel nozzles for internal combustion engines
GB885627A (en) * 1959-09-15 1961-12-28 Goetaverken Ab Improvements in fuel injection valves for internal combustion engines
DE2932433A1 (de) * 1979-08-10 1981-02-26 Bosch Gmbh Robert Einspritzventil fuer kraftstoffeinspritzanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT JAPANESE PATENTS REPORT, Sektion CH, Band 82, Nr. 50, 21. Januar 1983, Derwent Publications Ltd, London, GB; & JP-A-54 024 214 (DAIDO TOKUSHOKO) 23-02-1979 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569655A1 (de) * 1992-05-11 1993-11-18 New Sulzer Diesel AG Düsenkopf für eine Kraftstoff-Einspritzvorrichtung
CN108893628A (zh) * 2018-08-03 2018-11-27 中鼎特金秦皇岛科技股份有限公司 一种低弹性模量耐腐蚀钛合金及其制备方法
CN112176219A (zh) * 2020-09-28 2021-01-05 哈尔滨工业大学 一种Ti-Al-Nb-Zr-Mo耐腐蚀钛合金及其制备方法
US11873547B2 (en) 2020-10-15 2024-01-16 Cummins Inc. Fuel system components

Also Published As

Publication number Publication date
FI874355L (fi) 1988-05-26
DK489287D0 (da) 1987-09-17
FI874355A0 (fi) 1987-10-05
DK489287A (da) 1988-05-26
JPS63143382A (ja) 1988-06-15
CH671074A5 (enrdf_load_stackoverflow) 1989-07-31
FI874355A7 (fi) 1988-05-26

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Inventor name: PERNTER, WILFRIED