DE3734358A1 - Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin - Google Patents

Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin

Info

Publication number
DE3734358A1
DE3734358A1 DE19873734358 DE3734358A DE3734358A1 DE 3734358 A1 DE3734358 A1 DE 3734358A1 DE 19873734358 DE19873734358 DE 19873734358 DE 3734358 A DE3734358 A DE 3734358A DE 3734358 A1 DE3734358 A1 DE 3734358A1
Authority
DE
Germany
Prior art keywords
piston
connecting rod
pin
head
skirt
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Withdrawn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
DE19873734358
Other languages
German (de)
Inventor
Gotthard Stuska
Heinz Zeller
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.)
Mahle GmbH
Original Assignee
Mahle GmbH
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 Mahle GmbH filed Critical Mahle GmbH
Priority to DE19873734358 priority Critical patent/DE3734358A1/en
Publication of DE3734358A1 publication Critical patent/DE3734358A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces

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  • 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

In order to be able to construct a piston, particularly for internal combusion engines, with a low weight and an extremely short compression stroke, the said piston consists of a piston head (2) and of a separate piston skirt (3), which are rigidly connected to one another by screws. Since the hubs (8) hanging centrally from the piston top (6) are situated directly behind the piston-ring grooves (5) in the piston skirt (3), it is necessary during assembly first of all for the connecting rod (9), over which the piston skirt (3) has already been slipped, to be screwed to the dudgeon pin (7) in a position at 90@ to the operating position before the piston skirt (3) is screwed to the piston head (2). <IMAGE>

Description

Die Erfindung betrifft einen Kolben nach dem Oberbe­ griff des Anspruchs 1.The invention relates to a piston according to the Oberbe handle of claim 1.

Ein derartiger Kolben ist aus der DE-OS 35 38 426 be­ kannt. Um bei einem Kolben für Verbrennungsmotoren eine extrem niedrige Kompressionshöhe zu erreichen, muß der Kolbenbolzen von Naben aufgenommen werden, die radial voll hinter mindestens einer Kolbenringnut liegen. Um eine Montage des Kolbenbolzens zu ermögli­ chen, wird dieser in zwei Stücke geteilt, die nach­ einander in die Nabenbohrungen eingeschoben werden können. Anschließend werden die beiden Stücke des Kolbenbodens fest mit dem Pleuel verschraubt, wobei die erforderliche Schraube das Pleuel von unten her ganz durchragt. Eine derartige Ausführung ist einer­ seits bezüglich der notwendigen Einzelteile und ande­ rerseits bezüglich der Montage aufwendig.Such a piston is from DE-OS 35 38 426 be knows. In order for a piston for internal combustion engines to achieve an extremely low compression level the piston pin must be received by the hubs, the radially fully behind at least one piston ring groove lie. To allow assembly of the piston pin Chen, this is divided into two pieces, after are inserted into each other in the hub bores can. Then the two pieces of the Piston bottom firmly screwed to the connecting rod, whereby the necessary screw the connecting rod from below all the way through. Such an embodiment is one on the one hand with regard to the necessary individual parts and others on the other hand, complex in terms of assembly.

Aufgabe der vorliegenden Erfindung ist es daher, die­ se Nachteile zu vermeiden und einen Kolben mit einfa­ chen Mitteln zu schaffen, bei dem zur Erzielung einer niedrigen Kompressionshöhe die Naben radial hinter den Kolbenringnuten liegen. The object of the present invention is therefore that To avoid disadvantages and a piston with simple Chen means to create, in order to achieve a low compression height the hubs radially behind the piston ring grooves.  

Gelöst wird diese Aufgabe erfindungsgemäß durch einen Kolben mit den kennzeichnenden Merkmalen des An­ spruchs 1.According to the invention, this object is achieved by a Piston with the characteristic features of the An saying 1.

Weitere Ausgestaltungen nach der Erfindung sind in den Unteransprüchen enthalten.Further refinements according to the invention are in contain the subclaims.

Ein Ausführungsbeispiel ist in der Zeichnung darge­ stellt. Es zeigenAn embodiment is shown in the drawing poses. Show it

Fig. 1 einen erfindungsgemäßen Kolben im Schnitt Fig. 1 a piston according to the invention in section

Fig. 2 den Kolben im Schnitt nach Linie II-II Fig. 2 shows the piston in section along line II-II

Fig. 3 den Kolbenkopf mit angedeutetem Pleuel und Kolbenbolzen während der Montage Fig. 3 shows the piston head with indicated connecting rod and piston pin during assembly

Ein Kolben 1 besteht aus einem Kolbenkopf 2 und einem Kolbenschaft 3, die über zwei Schrauben 4 miteinander verbunden sind. Der Kolbenschaft 3 besitzt zur Auf­ nahme von Kolbenringen entsprechende Kolbenringnuten 5. Der Kolbenkopf 2 weist einen ebenen Kolbenboden 6 auf, an den zur Aufnahme eines Kolbenbodens 7 zwei Naben 8 mittig - d.h. radial innerhalb des für die Auflage des Kolbenschaftes 3 vorgesehenen Außenberei­ ches - angehängt sind. Der an sich zylindrische Kol­ benbolzen 7 ist auf seiner dem Pleuel 9 zugewandten Seite in dem Bereich, der nach der Montage zwischen den Naben 8 zu liegen kommt, mit einer ebenen Ausspa­ rung 10 versehen, an der das Pleuel 9 mit einem ent­ sprechend ausgebildeten Kopfteil 11 anliegt. Die Ver­ bindung von Kolbenbolzen 7 und Pleuel 9 erfolgt über eine den Kolbenbolzen 7 in einer Ausnehmung 12 mittig durchragende und und in das abgeflachte Kopfteil 11 des Pleuels 9 eingreifende Schraube (nicht gezeich­ net).A piston 1 consists of a piston head 2 and a piston shaft 3 , which are connected to one another by two screws 4 . The piston skirt 3 has corresponding piston ring grooves 5 for receiving piston rings. The piston head 2 includes a flat piston head 6, at the center for accommodating a piston head 7, two bosses 8 - are attached - ie radially ches within the provided for the support of the piston shaft 3 external preparation. The actually cylindrical Kol benbolzen 7 is on its side facing the connecting rod 9 in the area that comes to rest after assembly between the hubs 8 , provided with a flat recess 10 , on which the connecting rod 9 is designed with an appropriately designed head part 11 is present. The connection of piston pin 7 and connecting rod 9 takes place via a piston pin 7 protruding centrally in a recess 12 and engaging in the flattened head part 11 of the connecting rod 9 (not shown).

Die Montage des Kolbens erfolgt in folgenden Schrit­ ten: Der Kolbenschaft 3 wird über das aus Gewichts­ gründen aus Alu-Legierung bestehende Pleuel 9 ge­ streift und der Kolbenbolzen 7 in die Naben 8 so ein­ geschoben, daß die Achse der Ausnehmung 12 senkrecht zur Kolbenlängsachse steht (siehe Fig. 3). Anschlie­ ßend wird das Pleuel 9 um 90 Grad geschwenkt gegen­ über seiner üblichen Lage bei Motorbetrieb mit seinem Kopfteil 11 an die zwischen den Naben 8 liegende Aus­ sparung 10 des Kolbenbolzens 7 angelegt und Kolben­ bolzen 7 und Pleuel 9 über eine nicht gezeichnete Schraube miteinander verbunden. Damit das Kopfteil 11 des Pleuels 9 an den Kolbenbolzen 7 in einer derarti­ gen Lage angeflanscht werden kann, ist es notwendig, jede Nabe 8 mit einer zusätzlichen, auf der Nabenin­ nenseite liegenden Ausnehmung 13 zu versehen, in die das Kopfteil 11 des Pleuels 9 eintauchen kann. Nach Verschraubung von Kolbenbolzen 7 und Pleuel 9 werden diese um 90 Grad in ihre normale Betriebsstellung zu­ rückgeschwenkt und anschließend der Kolbenschaft 3 über die Schrauben 4 mit dem Kolbenboden 6 des Kol­ benkopfes 2 fest verbunden. The piston is assembled in the following steps: The piston skirt 3 is brushed over the connecting rods 9 made of aluminum alloy and the piston pin 7 is pushed into the hubs 8 so that the axis of the recess 12 is perpendicular to the longitudinal axis of the piston (see Fig. 3). Subsequently, the connecting rod 9 is pivoted by 90 degrees compared to its usual position during engine operation with its head part 11 to the recess 10 lying between the hubs 8 and the piston pin 7 and piston pin 7 and connecting rod 9 are connected to one another by a screw, not shown. So that the head part 11 of the connecting rod 9 can be flanged to the piston pin 7 in such a position, it is necessary to provide each hub 8 with an additional recess 13 lying on the inside of the hub, into which the head part 11 of the connecting rod 9 is inserted can. After fitting of piston pin 7 and the connecting rod 9, this will be at 90 degrees to back pivoted to its normal operating position, and then the piston shaft 3 by the screw 4 with the piston head 6 of the Kol benkopfes 2 is fixedly connected.

Mit einer derartigen Ausführung wird ein kompakter Kolben mit niedrigem Gewicht und extrem niedriger Kompressionshöhe mit einfachen Mitteln geschaffen.With such a design is a compact Low weight and extremely low piston Compression height created with simple means.

Claims (4)

1. Kolben insbesondere für Verbrennungsmotoren, mit fest an den Kolbenbolzen montiertem Pleuel, gekennzeichnet durch die Merkmale:
  • a) der Kolben (1) umfaßt als Einzelteile einen Kolbenkopf (2) und einen Kolbenschaft (3)
  • b) der Kolbenkopf (2) und der Kolbenschaft (3) sind miteinander verbunden
  • c) zumindest der Kolbenschaft (3) besitzt zur Aufnahme der Kolbenringe entsprechende Kol­ benringnuten (5)
  • d) der Kolbenkopf (2) besteht aus einem Kolben­ boden (6) an den radial innerhalb des für die Auflage des Kolbenschaftes (3) vorgese­ henen Außenbereiches Naben (8) zur Aufnahme des Kolbenbolzens (7) angehängt sind
  • e) der Kolbenbolzen (7) ist mit dem Pleuel (9) verschraubt.
1. Piston, in particular for internal combustion engines, with a connecting rod fixed to the piston pin, characterized by the features:
  • a) the piston ( 1 ) comprises as individual parts a piston head ( 2 ) and a piston skirt ( 3 )
  • b) the piston head ( 2 ) and the piston skirt ( 3 ) are interconnected
  • c) at least the piston shaft ( 3 ) has corresponding piston ring grooves ( 5 ) for receiving the piston rings
  • d) the piston head ( 2 ) consists of a piston base ( 6 ) to the radially inside the bearing for the support of the piston skirt ( 3 ) provided outside hubs ( 8 ) for receiving the piston pin ( 7 ) are attached
  • e) the piston pin ( 7 ) is screwed to the connecting rod ( 9 ).
2. Kolben nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindung von Kolbenkopf (2) und Kolben­ schaft (3) über Schrauben (4), insbesondere zwei Schrauben (4), erfolgt.2. Piston according to claim 1, characterized in that the connection of the piston head ( 2 ) and piston shaft ( 3 ) via screws ( 4 ), in particular two screws ( 4 ). 3. Kolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zur Verbindung von Kolbenbolzen (7) und Pleu­ el (9) eine Schraube den Kolbenbolzen (7) mittig durchragt und in das Kopfteil (11) des Pleuels (9) eingreift.3. Piston according to claim 1 or 2, characterized in that for the connection of piston pin ( 7 ) and connecting rod el ( 9 ) a screw extends through the piston pin ( 7 ) in the center and engages in the head part ( 11 ) of the connecting rod ( 9 ). 4. Kolben nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kolbenbolzen (7) in seinem dem Kolbenbo­ den (6) zugewandten Bereich über seine gesamte Mantellänge an der entsprechenden Lagerfläche des Kolbenkopfes (2) anliegt.4. Piston according to one of the preceding claims, characterized in that the piston pin ( 7 ) in its area facing the Kolbenbo ( 6 ) bears over its entire jacket length on the corresponding bearing surface of the piston head ( 2 ).
DE19873734358 1987-10-10 1987-10-10 Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin Withdrawn DE3734358A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873734358 DE3734358A1 (en) 1987-10-10 1987-10-10 Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873734358 DE3734358A1 (en) 1987-10-10 1987-10-10 Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin

Publications (1)

Publication Number Publication Date
DE3734358A1 true DE3734358A1 (en) 1989-04-20

Family

ID=6338079

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873734358 Withdrawn DE3734358A1 (en) 1987-10-10 1987-10-10 Piston, particularly for internal combusion engines, with a connecting rod mounted rigidly on the dudgeon pin

Country Status (1)

Country Link
DE (1) DE3734358A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118429A1 (en) * 1990-06-05 1992-01-02 Murata Machinery Ltd SPIDER CAN PLANT
DE4227708A1 (en) * 1992-08-21 1994-03-03 Eckart Woessner Piston for a four-stroke internal combustion engine
DE4301860A1 (en) * 1993-01-25 1994-09-22 Stefan Dipl Phys Stock Special piston for piston engines
DE19530631A1 (en) * 1995-08-21 1997-02-27 Mahle Gmbh Piston for internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118429A1 (en) * 1990-06-05 1992-01-02 Murata Machinery Ltd SPIDER CAN PLANT
DE4227708A1 (en) * 1992-08-21 1994-03-03 Eckart Woessner Piston for a four-stroke internal combustion engine
DE4301860A1 (en) * 1993-01-25 1994-09-22 Stefan Dipl Phys Stock Special piston for piston engines
DE19530631A1 (en) * 1995-08-21 1997-02-27 Mahle Gmbh Piston for internal combustion engine
DE19530631B4 (en) * 1995-08-21 2005-09-22 Mahle Gmbh Piston for internal combustion engines with a split piston pin

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination