DE4111368A1 - IC engine piston assembly - has upper part connected to separate skirt by gudgeon pin in specially prepared bores - Google Patents
IC engine piston assembly - has upper part connected to separate skirt by gudgeon pin in specially prepared boresInfo
- Publication number
- DE4111368A1 DE4111368A1 DE4111368A DE4111368A DE4111368A1 DE 4111368 A1 DE4111368 A1 DE 4111368A1 DE 4111368 A DE4111368 A DE 4111368A DE 4111368 A DE4111368 A DE 4111368A DE 4111368 A1 DE4111368 A1 DE 4111368A1
- Authority
- DE
- Germany
- Prior art keywords
- bore
- piston
- hub
- hubs
- hub bore
- 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.)
- Granted
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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/0069—Multi-part pistons the crown and skirt being interconnected by the gudgeon pin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Die Erfindung betrifft einen Tauchkolben für Verbren nungsmotoren nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a plunger for burning voltage motors according to the preamble of the claim 1.
Ein derartiger Kolben ist beispielsweise aus DE-C-32 10 771 bekannt. Der Kolbenbolzen ist bei dieser be kannten Ausführung in buchsenfreien Nabenbohrungen des Kolbens gelagert und an seiner Laufoberfläche ge härtet.Such a piston is for example from DE-C-32 10 771 known. The piston pin is in this be known version in bush-free hub bores of the piston stored and ge on its running surface hardens.
Hiervon ausgehend liegt der Erfindung die Aufgabe zu grunde, das aus dem Kolbenbolzen und den Nabenbohrun gen bestehende Bolzen-Naben-Lager einerseits funkti onsmäßig zu verbessern und andererseits bezüglich des Herstellungsaufwandes kostengünstiger auszubilden.Proceeding from this, the object of the invention reasons, that from the piston pin and the hub bore against existing bolt-hub bearings on the one hand to improve onsually and on the other hand regarding the Training cost-effective training.
Gelöst wird diese Aufgabe durch eine Ausführung des Bolzen-Naben-Lagers nach den kennzeichnenden Merkma len des Anspruchs 1 oder 2.This task is solved by executing the Bolt-hub bearing according to the characteristic feature len of claim 1 or 2.
Zweckmäßige Ausgestaltungen dieser Lösungen sind Ge genstand der Unteransprüche.Appropriate configurations of these solutions are Ge subject of the subclaims.
Ein Ausführungsbeispiel ist in der Zeichnung darge stellt. Es zeigtAn embodiment is shown in the drawing poses. It shows
Fig. 1 einen Schnitt durch einen Kolben mit über den Kolbenbolzen angelenktem Kolbenschaft;1 shows a section through a piston with a hinged about the piston pin piston shaft.
Fig. 2 einen Nabenbohrungsbereich als Aus schnitt aus dem Kolben. Fig. 2 shows a hub bore area as a section from the piston.
Das Oberteil 1 des Kolbens ist über einen nicht dar gestellten Kolbenbolzen gelenkig mit dem Kolbenschaft 2 verbunden. Das Material des Oberteiles ist Stahl. Der das Oberteil 1 und den Schaft 2 verbindende Kol benbolzen ist in den Bohrungen 3 der Naben 4 des Oberteiles gelagert.The upper part 1 of the piston is articulated to the piston skirt 2 via a piston pin (not shown). The material of the upper part is steel. The piston connecting the upper part 1 and the shaft 2 is supported in the bores 3 of the hubs 4 of the upper part.
Die Bohrungen 3 der Naben 4 können zylindrisch kreis rund oder zylindrisch mit geringer Ovalität ausgebil det sein. Die geringe Ovalität der Nabenbohrung ist so ausgebildet, daß die kleine Ovalitätsachse in Kol benlängsrichtung verläuft.The holes 3 of the hubs 4 can be cylindrical circular round or cylindrical with low ovality. The low ovality of the hub bore is designed such that the small ovality axis runs in the longitudinal direction of the piston.
Die Endbereiche der Bohrung 3 können radial aufgewei tet sein. Liegt eine zylindrisch kreisrunde Bohrung 3 vor, so weist der aufgeweitete Bohrungsbereich eine konische Mantelfläche auf, wobei diese konische Man telfläche auch konvex gewölbt sein kann. Bei einer leicht ovalen Form der Nabenbohrung 3 gleicht die Aufweitung einer Art umlaufenden Fase mit jeweils gleicher Neigung gegenüber der nicht aufgeweiteten Mantelfläche der Bohrung 3.The end regions of the bore 3 can be radially expanded. If there is a cylindrical circular bore 3 , the widened bore region has a conical outer surface, this conical surface can also be convexly curved. In the case of a slightly oval shape of the hub bore 3, the widening resembles a type of circumferential chamfer, each with the same inclination with respect to the unexpanded lateral surface of the bore 3 .
Wichtig ist in erster Linie die Aufweitung der Boh rung 3 an ihrem der Kolbenachse zugewandten Ende. Diese Aufweitung ist in der Zeichnung mit B markiert. Der Aufweitungsbereich an dem gegenüberliegenden äu ßeren Ende der Bohrung 3 ist in der Zeichnung mit C angegeben. Die maximale Länge der Bohrung 3 gibt das Maß A an.It is important primarily the expansion of the drilling 3 at its end facing the piston axis. This expansion is marked with B in the drawing. The expansion area at the opposite outer end of the bore 3 is indicated in the drawing with C. The maximum length of hole 3 indicates dimension A.
In vielen Fällen sind die Naben 4 eines Kolbens so ausgebildet, daß sich ihr gegenseitiger Abstand innen in Richtung zum Kolbenschaftende hin erweitert. Man spricht in diesen Fällen allgemein von Naben mit ei ner Trapezform. Bei derartigen Trapez-Naben gibt das Längenmaß A der Bohrung 3 die Bohrungsbreite im obe ren Zenit der Bohrung an.In many cases, the hubs 4 of a piston are designed in such a way that their mutual spacing widens towards the end of the piston. In these cases one speaks generally of hubs with a trapezoidal shape. With such trapezoidal hubs, the length dimension A of the bore 3 indicates the bore width in the upper zenith of the bore.
In dem dargestellten Beispiel messen die aufgeweite ten Bereiche B = 40% von A und C = 10% von A. Bei dem mit B bezeichneten Aufweitungsbereich gilt das angegebene Maß ausschließlich für den oberen Zenit der Bohrung 3. In den übrigen Umfangsbereichen ver kleinert sich dieser Bereich B entsprechend der Tra pezform der Nabe 4 und kann im Bereich der durch die Trapezform bedingten schmalen Nabenbreite bis auf den Wert Null abnehmen. Ausgehend von dem für den oberen Zenitbereich angegebenen Maß verläuft die Aufweitung über den Umfang der Bohrung 3 derart, daß sie jeweils in derjenigen Ebene endet, die normal zur Bolzenrich tung aufgespannt durch das angegebene Maß B im oberen Bohrungszenit verläuft.In the example shown, the widened areas measure B = 40% of A and C = 10% of A. In the case of the widening area designated B, the dimension given applies only to the upper zenith of hole 3 . In the remaining circumferential areas, this area B decreases in accordance with the trapezoidal shape of the hub 4 and can decrease to the value zero in the area of the narrow hub width caused by the trapezoidal shape. Starting from the dimension specified for the upper zenith area, the widening extends over the circumference of the bore 3 in such a way that it ends in that plane that extends normally to the direction of the bolt through the specified dimension B in the upper bore zenith.
Bei dem für das Kolbenoberteil 1 angegebenen Material hat sich für eine phosphatierte Bohrung 3 eine Ober flächenrauhtiefe Ra = 0,8-1 Mikrometer als beson ders zweckmäßig erwiesen. Die gleichmäßig umlaufende Aufweitung der Bohrungen 3 an ihren der Kolbenachse zugewandten Enden beträgt im vorliegend beschriebenen Fall radial r = 0,03% des Bolzendurchmessers D = 48 mm.In the material specified for the upper piston part 1 , an upper surface roughness R a = 0.8-1 micrometer has proven to be particularly useful for a phosphated bore 3 . The uniformly circumferential widening of the bores 3 at their ends facing the piston axis is radially r = 0.03% of the bolt diameter D = 48 mm in the case described here.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4111368A DE4111368C2 (en) | 1990-07-07 | 1991-04-09 | Plunger pistons for internal combustion engines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4021702 | 1990-07-07 | ||
DE4111368A DE4111368C2 (en) | 1990-07-07 | 1991-04-09 | Plunger pistons for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4111368A1 true DE4111368A1 (en) | 1992-01-09 |
DE4111368C2 DE4111368C2 (en) | 1998-11-26 |
Family
ID=6409871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4111368A Expired - Lifetime DE4111368C2 (en) | 1990-07-07 | 1991-04-09 | Plunger pistons for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4111368C2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6557457B1 (en) * | 1999-12-01 | 2003-05-06 | Federal-Mogul World Wide, Inc. | Bushingless piston and connecting rod assembly and method of manufacture |
WO2007025733A1 (en) * | 2005-09-03 | 2007-03-08 | Ks Kolbenschmidt Gmbh | Piston-pin bore dimensions for a piston of an internal combustion engine |
WO2007076813A1 (en) * | 2005-12-21 | 2007-07-12 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
WO2007115527A1 (en) * | 2006-04-04 | 2007-10-18 | Mahle International Gmbh | Pin bosses of a piston for an internal combustion engine |
EP1920151A1 (en) * | 2005-08-29 | 2008-05-14 | KS Kolbenschmidt GmbH | Lightweight piston |
WO2008061487A1 (en) | 2006-11-25 | 2008-05-29 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2008080543A1 (en) | 2006-12-29 | 2008-07-10 | Mahle International Gmbh | Piston pin for a combustion engine and method for its manufacture |
US7765696B2 (en) | 2004-12-10 | 2010-08-03 | Mahle International Gmbh | Piston for an internal combustion engine and method for coating its pin bores |
WO2015114568A1 (en) * | 2014-01-29 | 2015-08-06 | Mahle International Gmbh | Piston with coated pin bore |
CN105108454A (en) * | 2015-08-19 | 2015-12-02 | 合肥市田源精铸有限公司 | Engine piston pin processing technology |
US9726223B2 (en) | 2005-12-21 | 2017-08-08 | Mahle International Gmbh | Method for the production of a connecting rod for an internal combustion engine |
EP1521929B2 (en) † | 2002-07-11 | 2020-01-22 | Mahle Gmbh | Piston for an internal combustion engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3063122A1 (en) | 2017-02-21 | 2018-08-24 | Peugeot Citroen Automobiles Sa | MOTION TRANSMISSION DEVICE FOR THERMAL MOTOR |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301366A1 (en) * | 1983-01-18 | 1984-07-19 | Karl Schmidt Gmbh, 7107 Neckarsulm | Piston for internal combustion engines |
DE3210771C2 (en) * | 1982-03-24 | 1988-07-07 | Elsbett, Ludwig |
-
1991
- 1991-04-09 DE DE4111368A patent/DE4111368C2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3210771C2 (en) * | 1982-03-24 | 1988-07-07 | Elsbett, Ludwig | |
DE3301366A1 (en) * | 1983-01-18 | 1984-07-19 | Karl Schmidt Gmbh, 7107 Neckarsulm | Piston for internal combustion engines |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6557457B1 (en) * | 1999-12-01 | 2003-05-06 | Federal-Mogul World Wide, Inc. | Bushingless piston and connecting rod assembly and method of manufacture |
EP1521929B2 (en) † | 2002-07-11 | 2020-01-22 | Mahle Gmbh | Piston for an internal combustion engine |
US7765696B2 (en) | 2004-12-10 | 2010-08-03 | Mahle International Gmbh | Piston for an internal combustion engine and method for coating its pin bores |
EP1920151A1 (en) * | 2005-08-29 | 2008-05-14 | KS Kolbenschmidt GmbH | Lightweight piston |
WO2007025733A1 (en) * | 2005-09-03 | 2007-03-08 | Ks Kolbenschmidt Gmbh | Piston-pin bore dimensions for a piston of an internal combustion engine |
US8443715B2 (en) | 2005-09-03 | 2013-05-21 | Ks Kolbenschmidt Gmbh | Piston-pin bore dimensions for a piston of an internal combustion engine |
US8181623B2 (en) | 2005-12-21 | 2012-05-22 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2007076813A1 (en) * | 2005-12-21 | 2007-07-12 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
US9726223B2 (en) | 2005-12-21 | 2017-08-08 | Mahle International Gmbh | Method for the production of a connecting rod for an internal combustion engine |
WO2007115527A1 (en) * | 2006-04-04 | 2007-10-18 | Mahle International Gmbh | Pin bosses of a piston for an internal combustion engine |
US8011287B2 (en) | 2006-04-04 | 2011-09-06 | Mahle International Gmbh | Pin bosses of a piston for an internal combustion engine |
JP2010510434A (en) * | 2006-11-25 | 2010-04-02 | マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Pistons used in internal combustion engines |
US8205591B2 (en) | 2006-11-25 | 2012-06-26 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2008061487A1 (en) | 2006-11-25 | 2008-05-29 | Mahle International Gmbh | Piston for an internal combustion engine |
US7536945B2 (en) | 2006-12-29 | 2009-05-26 | Mahle Technology, Inc. | Piston pin for a combustion engine and method for its manufacture |
WO2008080543A1 (en) | 2006-12-29 | 2008-07-10 | Mahle International Gmbh | Piston pin for a combustion engine and method for its manufacture |
WO2015114568A1 (en) * | 2014-01-29 | 2015-08-06 | Mahle International Gmbh | Piston with coated pin bore |
CN105108454A (en) * | 2015-08-19 | 2015-12-02 | 合肥市田源精铸有限公司 | Engine piston pin processing technology |
Also Published As
Publication number | Publication date |
---|---|
DE4111368C2 (en) | 1998-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8380 | Miscellaneous part iii |
Free format text: IN DER PS FEHLT DIE FIGUR 2. ES FOLGT ERGAENZUNGSDRUCK |
|
R071 | Expiry of right |