DE3918996C1 - Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes - Google Patents

Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes

Info

Publication number
DE3918996C1
DE3918996C1 DE19893918996 DE3918996A DE3918996C1 DE 3918996 C1 DE3918996 C1 DE 3918996C1 DE 19893918996 DE19893918996 DE 19893918996 DE 3918996 A DE3918996 A DE 3918996A DE 3918996 C1 DE3918996 C1 DE 3918996C1
Authority
DE
Germany
Prior art keywords
ring
piston
steel strip
shaped cross
coil spring
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.)
Expired - Lifetime
Application number
DE19893918996
Other languages
German (de)
Inventor
Reiner 5060 Bergisch Gladbach De Kierst
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.)
Federal Mogul Burscheid GmbH
Original Assignee
GOETZE AG 5093 BURSCHEID DE
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 GOETZE AG 5093 BURSCHEID DE filed Critical GOETZE AG 5093 BURSCHEID DE
Priority to DE19893918996 priority Critical patent/DE3918996C1/en
Application granted granted Critical
Publication of DE3918996C1 publication Critical patent/DE3918996C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
    • F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
    • F16J9/062—Coiled spring along the entire circumference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F16J9/203—Oil-scraping rings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

An oil wiper ring for a piston (1) is produced from a steel strip which is provided with M-shaped cross section profile. The two free ends (4,5) on the parallel profile arms (2,3) provide the wiper edges which are in contact with the cylinder wall. The concave shaped side of the profile ring provides the location for a coil spring ring (8) which produces the required contact pressure on the cylinder wall. Several radial holes (7) at the centre of the curvature are provided for oil drainage. ADVANTAGE - Improved oil wiper ring for piston is of compact, simple construction.

Description

Die Erfindung betrifft einen Ölabstreifkolbenring, bestehend aus einem Stahlbandstreifen und einer Schlauchfeder, wobei durch Biegen des Stahlbandes ein W-förmiges Querschnitts-Profil gebildet ist mit zwei radial auswärts ragenden Schenkeln und einem bogenförmigen Mittelteil zur Aufnahme der Schlauchfeder.The invention relates to an oil scraper ring, consisting of a steel strip and a Hose spring, taking a by bending the steel band W-shaped cross-sectional profile is formed with two radially outwardly projecting legs and one arcuate central part for receiving the Hose spring.

Bei der Konstruktion von Kolbenringen ist insbesondere die Absenkung der radialen und axialen Bauhöhe anzustreben, um einerseits das radiale Anpassungsvermögen des Ringsystems an die Zylinderverzüge zu erhöhen und um andererseits axial niedrige Kolbenbauhöhen zu ermöglichen. Das liefert unter anderem bei Verbrennungsmotoren niedrige Reibwerte und Kraftstoffverbrauchsvorteile.When designing piston rings is particularly the reduction of the radial and axial height to strive to on the one hand the radial Adaptability of the ring system to the Increase cylinder distortion and, on the other hand, axially to enable low piston heights. That delivers low among other things in internal combustion engines Coefficients of friction and fuel consumption advantages.

Die US-PS 24 45 090 oder die US-PS 24 52 503 offenbaren einen gattungsgemäßen Ölabstreifkolbenring, der im Hinblick auf diese Forderung keine optimale Lösung darstellt. Durch die ungünstige Abbiegung der radial auswärts ragenden Schenkel ergibt sich ein radial und axial hochbauendes System. Hinzu kommt, daß sich die Ölabflußlöcher bis in die Schenkel erstrecken, so daß die Schenkelflanken geringe tragende Flächen mit vielen Begrenzungskanten (Ölfilm-Abreißkanten) aufweisen, die sich leicht in die Kolbennut eingraben können.The U.S. PS 24 45 090 or US-PS 24 52 503 disclose one Generic oil scraper ring, which in view is not an optimal solution to this requirement. Due to the unfavorable turn of the radially outward protruding leg results in a radial and axial building system. In addition, the Extend oil drain holes into the legs so that the flanks of the legs have small bearing surfaces many boundary edges (oil film tear-off edges) have that easily dig into the piston groove can.

Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Ölabstreifkolbenring hinsichtlich seiner Bauhöhe axial und radial zu optimieren, ohne Einschränkungen bei seinem Funktionsverhalten hinnehmen zu müssen, beziehungsweise dieses noch zu verbessern.The invention has for its object a generic oil scraper piston ring with regard optimize its overall height axially and radially without Limitations on how it works to have to accept, or this to improve.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Biegebereich der Schenkel das Mittelteil unmittelbar an den beiden Innenflanken der Schenkel anliegt. Hierdurch wird einerseits die axiale Bauhöhe gesenkt, da sich die gesamte Bauhöhe lediglich aus der Materialstärke der Schenkel und des Mittelteils sowie dem Außen-Durchmesser der Schlauchfeder zusammensetzt, andererseits ergibt sich eine gute Abstützwirkung durch die Blocklage der Schenkel.This object is achieved in that the middle part in the bending area of the legs directly on the two inner flanks of the legs is present. As a result, the axial height is on the one hand lowered because the entire height is only from the Material thickness of the legs and the middle part as well the outer diameter of the hose spring, on the other hand, there is a good support effect due to the block position of the legs.

Einem weiteren Gedanken der Erfindung gemäß sind zur Verbesserung des Funktionsverhaltens die Ölabflußlöcher ausschließlich im bogenförmigen Mittelteil vorgesehen, so daß die gesamte Flankenfläche der Schenkel in der Kolbennut zur Anlage kommt.According to a further concept of the invention Improvement in functional behavior Oil drain holes only in the arc Midsection provided so that the entire Flank surface of the legs in the piston groove to the system is coming.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispiels dargestellt und wird im folgenden näher erläutert:The invention is in the drawing based on a Embodiment shown and is in the following explained in more detail:

Die Figur zeigt einen Ölabstreifkolbenring 1 im Querschnitt. Durch Abbiegen der Ränder eines Stahlbandstreifens ist ein W-förmiges Profil gebildet. Die so gebildeten zwei Schenkel 2, 3 weisen angefaste Laufflächen 4, 5 auf, die gegebenenfalls mit einer Beschichtung versehen sein können. Im Mittelteil 6 erstrecken sich über den Umfang mehrere Ölabflußlöcher 7. Eine Schlauchfeder 8 liegt formfüllend am bogenförmigen Mittelteil 6 an und erzeugt eine radial nach außen wirkende Kraftkomponente. Erfindungsgemäß liegen die Schenkel 2, 3 im Biegebereich 9, 10 unmittelbar am Mittelteil 6 an, d.h. die Biegefalte 11, 12 ist in sich geschlossen. Um eine geringe radiale Bauhöhe zu erreichen, liegt der Biegebereich 9, 10 beziehungsweise die geschlossene Biegefalte 11, 12 zwischen Mittelteil 6 und Schenkel 2, 3 in der axialen Mittellinie 13 der Schlauchfeder 8.The figure shows an oil scraper piston ring 1 in cross section. A W-shaped profile is formed by bending the edges of a steel strip. The two legs 2 , 3 formed in this way have chamfered running surfaces 4 , 5 , which can optionally be provided with a coating. In the middle part 6 , several oil drain holes 7 extend over the circumference. A tube spring 8 lies in a form-filling manner on the arcuate central part 6 and generates a force component acting radially outwards. According to the invention, the legs 2 , 3 lie in the bending area 9 , 10 directly on the middle part 6 , ie the bending folds 11 , 12 are self-contained. In order to achieve a low radial height, the bending area 9 , 10 or the closed bending folds 11 , 12 lies between the middle part 6 and the legs 2 , 3 in the axial center line 13 of the tube spring 8 .

Claims (2)

1. Ölabstreifkolbenring, bestehend aus einem Stahlbandstreifen und einer Schlauchfeder, wobei durch Biegen des Stahlbandes ein W-förmiges Querschnitts-Profil gebildet ist mit zwei radial auswärts ragenden Schenkeln und einem bogenförmigen Mittelteil zur Aufnahme der Schlauchfeder, dadurch gekennzeichnet, daß im Biegebereich (9, 10) der Schenkel (2, 3) das Mittelteil (6) unmittelbar an den beiden Innenflanken der Schenkel (2, 3) liegt.1. Oil scraper piston ring, consisting of a steel strip and a tube spring, whereby a W-shaped cross-sectional profile is formed by bending the steel strip with two radially outwardly projecting legs and an arcuate central part for receiving the tube spring, characterized in that in the bending area ( 9 , 10 ) the leg ( 2 , 3 ) the middle part ( 6 ) lies directly on the two inner flanks of the leg ( 2 , 3 ). 2. Ölabstreifkolbenring nach Anspruch 1, dadurch gekennzeichnet, daß ausschließlich im bogenförmigen Mittelteil (6) Ölabflußlöcher (7) vorgesehen sind.2. Oil scraper piston ring according to claim 1, characterized in that oil drain holes ( 7 ) are provided exclusively in the arcuate central part ( 6 ).
DE19893918996 1989-06-10 1989-06-10 Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes Expired - Lifetime DE3918996C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893918996 DE3918996C1 (en) 1989-06-10 1989-06-10 Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893918996 DE3918996C1 (en) 1989-06-10 1989-06-10 Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes

Publications (1)

Publication Number Publication Date
DE3918996C1 true DE3918996C1 (en) 1990-10-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893918996 Expired - Lifetime DE3918996C1 (en) 1989-06-10 1989-06-10 Oil wiper ring for piston - is mfd. from steel strip with m-shaped cross-section and has parallel profile arms coil spring ring and drainage holes

Country Status (1)

Country Link
DE (1) DE3918996C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019104274A1 (en) * 2019-02-20 2020-08-20 Federal-Mogul Burscheid Gmbh OIL WIPER PISTON RING

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445090A (en) * 1947-01-09 1948-07-13 Perfect Circle Corp Piston ring
US2452503A (en) * 1944-06-21 1948-10-26 Perfect Circle Co Piston ring

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452503A (en) * 1944-06-21 1948-10-26 Perfect Circle Co Piston ring
US2445090A (en) * 1947-01-09 1948-07-13 Perfect Circle Corp Piston ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019104274A1 (en) * 2019-02-20 2020-08-20 Federal-Mogul Burscheid Gmbh OIL WIPER PISTON RING

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AE GOETZE GMBH, 51399 BURSCHEID, DE

8327 Change in the person/name/address of the patent owner

Owner name: FEDERAL-MOGUL BURSCHEID GMBH, 51399 BURSCHEID, DE

8339 Ceased/non-payment of the annual fee