DE3339360A1 - Connecting rod of a reciprocating piston engine - Google Patents

Connecting rod of a reciprocating piston engine

Info

Publication number
DE3339360A1
DE3339360A1 DE19833339360 DE3339360A DE3339360A1 DE 3339360 A1 DE3339360 A1 DE 3339360A1 DE 19833339360 DE19833339360 DE 19833339360 DE 3339360 A DE3339360 A DE 3339360A DE 3339360 A1 DE3339360 A1 DE 3339360A1
Authority
DE
Germany
Prior art keywords
connecting rod
halves
energy
piston
piston engine
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Withdrawn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
DE19833339360
Other languages
German (de)
Inventor
Gerard 4993 Rahden Brozio
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19833339360 priority Critical patent/DE3339360A1/en
Publication of DE3339360A1 publication Critical patent/DE3339360A1/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Withdrawn legal-status Critical Current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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The connecting rod (3) of a reciprocating piston engine comprises two connecting rod halves (3a and 3b), of which the connecting rod half (3a) is connected to the piston (2) and the connecting rod half (3b) to the crankshaft (4) of a reciprocating piston engine. The two connecting rod halves (3a and 3b) are telescopically displaceable with respect to one another. Between the two connecting rod halves (3a and 3b) an energy accumulator (5) is arranged which is operative in the direction of the longitudinal axis of the connecting rod (3). This two-part construction of the connecting rod (3) in conjunction with the energy accumulator (5) ensures that the energy released when the working stroke is carried out is to a certain extent stored in the energy accumulator (5) and is given off again in the upwards movement of the piston (2) inside the cylinder. As a result the bearing points of the connecting rod (3) are less stressed than in the case of a rigid connecting rod and in addition the combustion energy available is utilised more effectively. <IMAGE>

Description

Pleuelstange eines Hubkolbenmotors Connecting rod of a reciprocating engine

Die vorliegende Erfindung bezieht sich auf eine Pleuelstange eines Hubkolbenmotors.The present invention relates to a connecting rod of a Reciprocating engine.

Bislang sind die Pleuelstangen von Hubkolbenmotoren als einstückige, starre Bauteile ausgeführt. Die Pleuelstangen sind einerseits am Kolben und andererseits an einer Kurbelwelle des Hubkolbenmotors gelagert.So far, the connecting rods of reciprocating engines have been designed as one-piece, Rigid components executed. The connecting rods are on the one hand on the piston and on the other hand mounted on a crankshaft of the reciprocating engine.

Bei den bislang bekannten, starren Pleuelstangen werden die Lagerstellen der Pleuelstangen relativ hoch beansprucht, da beim Arbeitstakt des Hubkolbenmotors die auf den Kolben aufgebrachten Kräfte praktisch ungehindert auch auf die Lager einwirken können.In the previously known, rigid connecting rods, the bearings the connecting rods are subjected to relatively high loads, since during the work cycle of the reciprocating engine the forces applied to the piston practically unhindered on the bearings can act.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Pleuelstange eines Hubkolbenmotors so zu gestalten, daß die Lagerstellen der Pleuelstange weniger beansprucht werden.The present invention is based on the object of a connecting rod of a reciprocating engine so that the bearing points of the connecting rod are less are claimed.

Diese Aufgabe wird erfindungsgemäß gelöst durch zwei Pleuelstangenhälften, die teleskopartig gegeneinander verschiebbar sind und zwischen denen ein in Richtung ihrer Längsachse wirksamer Kraftspeicher angeordnet ist.This object is achieved according to the invention by two connecting rod halves, which are telescopically displaceable against each other and between which one in the direction its longitudinal axis effective energy storage is arranged.

Die erfindungsgemäße Konstruktion bewirkt, daß beim Arbeitstakt des Hubkolbenmotors ein Teil der frei werdenden Energie vom Kraftspeicher aufgenommen wird, so daß die Lager der Pleuelstange geringere Belastungen aufzunehmen haben als bei einer starren Pleuelstange.The construction of the invention has the effect that during the work cycle of the Reciprocating engine absorbed part of the energy released by the energy store so that the bearings of the connecting rod have to absorb less loads than with a rigid connecting rod.

Die zunächst im Kraftspeicher gespeicherte Energie wird dann wieder frei, wenn die Kurbelwelle über ihren unteren Totpunkt hinwegbewegt wird. Die frei werdende Energie unterstützt nun die Bewegung des Kolbens entgegen der Richtung bei der Ausführung des Arbeitstaktes, so daß insgesamt kein Energieverlust eintritt. Vielmehr kann gesagt werden, daß die zur Verfügung stehende Energie durch die erfindungsgemäße Pleuelstange zweckmäßiger ausgenutzt wird, als dies bei einer starren Pleuelstange der Fall ist.The energy initially stored in the energy store is then restored free when the crankshaft is moved past its bottom dead center. The free the increasing energy now supports the movement of the piston in the opposite direction during the execution of the work cycle, so that overall no energy loss occurs. Rather, it can be said that the available energy by the invention Connecting rod is used more expediently than in the case of a rigid connecting rod the case is.

Weitere Merkmale der Erfindung sind Gegenstand von Unteransprüchen.Further features of the invention are the subject of subclaims.

In den beigefügten Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt, welches im folgenden näher beschrieben wird.In the accompanying drawings is an embodiment of the invention shown, which is described in more detail below.

Es zeigen: Fig. 1 bis 6 schematische Darstellungen eines Hubkolbenmotors in verschiedenen Arbeitsstellungen, Fig. 7 einen Längsschnitt durch die Pleuelstange des liubkolbenmotors gemäß den Fig. 1 bis 6 in ihrem Mittelabschnitt.1 to 6 show schematic representations of a reciprocating piston engine in different working positions, 7 shows a longitudinal section through the connecting rod of the piston engine according to FIGS. 1 to 6 in its central section.

In den Fig. 1 bis 6 ist in schematischer Darstellung ein einzylindriger Hubkolbenmotor dargestellt.In FIGS. 1 to 6, a single cylinder is shown schematically Reciprocating engine shown.

Im Zylinder 1 ist der Kolben 2 geführt. Am Kolben 2 ist eine Pleuelstange 3 angeschlossen, die andererseits an einer Kurbelwelle 4 angeschlossen ist.The piston 2 is guided in the cylinder 1. There is a connecting rod on the piston 2 3, which on the other hand is connected to a crankshaft 4.

Die Drehrichtung der Kurbelwelle 4 ist in den Figuren 1 bis 6 durch einen Pfeil markiert.The direction of rotation of the crankshaft 4 is through in Figures 1 to 6 marked with an arrow.

Erfindungsgemäß besteht die Pleuelstange 3 aus zwei Pleuelstangenhälften 3a und 3b. Die beiden Pleuelstangenhälften 3a und 3b sind teleskopartig gegeneinander verschiebbar und zwischen den beiden Pleuelstangenhälften 3a und 3b ist ein Kraftspeicher 5 angeordnet.According to the invention, the connecting rod 3 consists of two connecting rod halves 3a and 3b. The two connecting rod halves 3a and 3b are telescopically opposite one another displaceable and between the two connecting rod halves 3a and 3b is an energy storage device 5 arranged.

Dieser Kraftspeicher 5, der vorzugsweise aus einer Schraubenfeder besteht, ist in Richtung der Längsachse der beiden Pleuelstangenhälften 3a und 3b wirksam.This energy storage device 5, which is preferably composed of a helical spring consists is in the direction of the longitudinal axis of the two connecting rod halves 3a and 3b effective.

Wie Fig. 7 sehr deutlich zeigt, bestehen die beiden Pleuelstangenhälften 3a und 3b aus Rohren unterschiedlich großer Durchmesser. Das kleinere Rohr der Pleuelstangenhälfte 3b weist einen Außendurchmesser auf, der dem Innendurchmesser des größeren Rohres der Pleuelstangenhälfte 3a entspricht. Die Pleuelstangenhälfte 3b ist in der Pleuelstangenhälfte 3a längsverschiebbar geführt.As FIG. 7 shows very clearly, there are two connecting rod halves 3a and 3b made of tubes of different sizes. The smaller pipe of the connecting rod half 3b has an outer diameter which is the inner diameter of the larger pipe of the connecting rod half 3a corresponds. The connecting rod half 3b is guided in the connecting rod half 3a so as to be longitudinally displaceable.

In beiden Pleuelstangenhälften 3a und 3b sind Lagerstopfen 6 und 7 befestigt, an welchen Lagerstopfen 6 und 7 der als Schrauben feder ausgebildete Kraftspeicher 5 befestigt ist.Bearing plugs 6 and 7 are located in both connecting rod halves 3a and 3b attached to which bearing plugs 6 and 7 designed as a coil spring Energy storage device 5 is attached.

Bei der Ausführung eines Arbeitstaktes wird der Kolben 2 in der aus Fig. 1 ersichtlichen Lage nach unten bewegt.When executing a work cycle, the piston 2 is in the off Fig. 1 position shown moved down.

Bei der Abwärtsbewegung des Kolbens 2 werden die beiden Pleuelstangenhälften 3a und 3b unter Zusammendrückung der Schraubenfeder zusammengeschoben. Dabei wird Energie im Kraftspeicher (Schraubenfeder) gespeichert. In dem Bereich, in dem die Pleuelstange 3 über den Totpunkt der Kurbelwelle 4 hinwegbewegt wird, wird die im Kraftspeicher gespeicherte Energie wieder frei, was zu einer Unterstützung sowohl der Überwindung des Totpunktes wie auch der Aufwärtsbewegung des Kolbens 2 innerhalb des Zylinders 1 führt.When the piston 2 moves downward, the two connecting rod halves become 3a and 3b pushed together with compression of the helical spring. It will Energy stored in the energy store (coil spring). In the area where the Connecting rod 3 is moved over the dead center of the crankshaft 4, the im Energy storage releases stored energy again, resulting in a support both overcoming the dead center as well as the upward movement of the piston 2 within of cylinder 1 leads.

Die pro Arbeitstakt zur Verfügung stehende Energie wird durch die zweiteilige und mit einem Kraftspeicher 5 ausgestattete Pleuelstange 3 zweckmäßiger ausgenutzt, als dies mit einer starren Pleuelstange möglich ist.The energy available per work cycle is provided by the two-part connecting rod 3 equipped with an energy storage device 5 is more expedient exploited than is possible with a rigid connecting rod.

Die erfindungsgemäße Pleuelstange kann ohne weiteres auch nachträglich in solche Hubkolbenmotoren eingebaut werden, die bislang mit starren Pleuelstangen ausgestattet sind.The connecting rod according to the invention can easily be retrofitted be installed in such reciprocating piston engines, who have been staring with so far Connecting rods are fitted.

Vorzugsweise sind die beiden Pleuelstangenhälften 3a und 3b aus Stahlrohren hergestellt.The two connecting rod halves 3a and 3b are preferably made of steel tubes manufactured.

Claims (4)

Patentansprüche 1. Pleuelstange eines Hubkolbenmotors, g e k e n n -z e i c h n e t d u r c h zwei Pleuelstangenhälften (3a,3b) die teleskopartig gegeneinander verschiebbar sind und zwischen denen ein in Richtung ihrer Längsachse wirksamer Kraftspeicher (5) angeordnet ist. Claims 1. Connecting rod of a reciprocating engine, g e k e n n -z e i c h n e t d u r c h two connecting rod halves (3a, 3b) which are telescopic are mutually displaceable and between which one in the direction of their longitudinal axis effective energy storage device (5) is arranged. 2. Pleuelstange nach Anspruch 1, dadurch gekennzeichnet, daß der Kraftspeicher (5) eine Schraubenfeder ist.2. Connecting rod according to claim 1, characterized in that the energy store (5) is a coil spring. 3. Pleuelstange nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Pleuelstangenhälften (3a,3b) aus Rohren unterschiedlicher Durchmesser bestehen und daß in jedem Rohr ein Lagerstopfen (6,7) befestigt ist, an denen der Kraftspeicher (5) endseitig gelagert ist.3. Connecting rod according to claim 1 or 2, characterized in that the connecting rod halves (3a, 3b) consist of tubes of different diameters and that in each tube a bearing plug (6,7) is attached to which the energy storage device (5) is mounted at the end. 4. Pleuelstange nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die beiden Pleuelstangenhälften (3a,3b) jeweils aus Stahlrohren bestehen.4. connecting rod according to one or more of the preceding claims, characterized in that the two connecting rod halves (3a, 3b) each from Steel pipes are made.
DE19833339360 1983-10-29 1983-10-29 Connecting rod of a reciprocating piston engine Withdrawn DE3339360A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833339360 DE3339360A1 (en) 1983-10-29 1983-10-29 Connecting rod of a reciprocating piston engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833339360 DE3339360A1 (en) 1983-10-29 1983-10-29 Connecting rod of a reciprocating piston engine

Publications (1)

Publication Number Publication Date
DE3339360A1 true DE3339360A1 (en) 1985-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833339360 Withdrawn DE3339360A1 (en) 1983-10-29 1983-10-29 Connecting rod of a reciprocating piston engine

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530191A1 (en) * 1995-08-17 1997-02-20 Daimler Benz Ag connecting rod
EP1462639A2 (en) * 2003-03-26 2004-09-29 Siegfried Meyer Spring-supported crankshaft coupling structure for use in an engine
EP1462667A1 (en) * 2003-03-26 2004-09-29 Siegfried Meyer Spring-based crankshaft coupling structure for engine
DE102007026312A1 (en) 2007-06-06 2008-12-11 Karl Richter Connecting rod/con-rod for internal combustion engines has a power reservoir for transferring power between a piston and a crankshaft
GB2494718A (en) * 2011-09-16 2013-03-20 Luciano Danilo Lissiak Segmented connecting rod with an energy storing element
CN108071573A (en) * 2016-11-17 2018-05-25 天津市千顷田机械科技有限公司 New compressors connecting rod
WO2020078089A1 (en) * 2018-10-19 2020-04-23 广州宏大动力科技有限公司 Elastic and length-variable piston connecting rod, and design and fabrication method therefor
RU202518U1 (en) * 2020-09-21 2021-02-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Two-stroke internal combustion engine with full exhaust gas emission

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530191A1 (en) * 1995-08-17 1997-02-20 Daimler Benz Ag connecting rod
US5724863A (en) * 1995-08-17 1998-03-10 Daimler Benz Ag Connecting rod
EP0761995B1 (en) * 1995-08-17 1999-11-24 DaimlerChrysler AG Connecting rod
EP1462639A2 (en) * 2003-03-26 2004-09-29 Siegfried Meyer Spring-supported crankshaft coupling structure for use in an engine
EP1462667A1 (en) * 2003-03-26 2004-09-29 Siegfried Meyer Spring-based crankshaft coupling structure for engine
EP1462639A3 (en) * 2003-03-26 2008-08-27 Siegfried Meyer Spring-supported crankshaft coupling structure for use in an engine
DE102007026312A1 (en) 2007-06-06 2008-12-11 Karl Richter Connecting rod/con-rod for internal combustion engines has a power reservoir for transferring power between a piston and a crankshaft
GB2494718A (en) * 2011-09-16 2013-03-20 Luciano Danilo Lissiak Segmented connecting rod with an energy storing element
CN108071573A (en) * 2016-11-17 2018-05-25 天津市千顷田机械科技有限公司 New compressors connecting rod
WO2020078089A1 (en) * 2018-10-19 2020-04-23 广州宏大动力科技有限公司 Elastic and length-variable piston connecting rod, and design and fabrication method therefor
RU202518U1 (en) * 2020-09-21 2021-02-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Two-stroke internal combustion engine with full exhaust gas emission

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