DE10138837A1 - Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement - Google Patents

Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement

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Publication number
DE10138837A1
DE10138837A1 DE2001138837 DE10138837A DE10138837A1 DE 10138837 A1 DE10138837 A1 DE 10138837A1 DE 2001138837 DE2001138837 DE 2001138837 DE 10138837 A DE10138837 A DE 10138837A DE 10138837 A1 DE10138837 A1 DE 10138837A1
Authority
DE
Germany
Prior art keywords
piston
engine
specially shaped
esp
reciprocating
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Withdrawn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
DE2001138837
Other languages
German (de)
Inventor
Helmut Obieglo
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 DE2001138837 priority Critical patent/DE10138837A1/en
Publication of DE10138837A1 publication Critical patent/DE10138837A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
    • F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

The engine has one or more cylinders (5) with pistons (2). Piston movement is controlled by rotation of a specially shaped cam (1a,b). Contour tracking is supported by elastic devices, esp. traction springs (3), which are positively fastened to the housing (4). Two pistons with connection elements are guided diametrically along the cam contours and by the cylinder.

Description

Die Erfindung betrifft ein Hubkolbenaggregat, insbesondere eine Verbrennungskraftmaschine mit wenigstens einem Zylinder und darin verschieblich angeordnetem Kolben, welcher über eine Konturführungseinrichtung (Nocke) auf seine Bahn gesteuert wird. The invention relates to a reciprocating piston unit, in particular a Internal combustion engine with at least one cylinder and slidably arranged therein Piston, which has a contour guiding device (cam) on its path is controlled.

Konturführungseinrichtungen, insbesondere Nockensteuerungen, sind bekannt. Diese dienen, vor allem in der Motorentechnik, dazu, Ventile im Zylinderkopf einer Hubkolbenmaschine zeitlich und örtlich zu führen. Dies gelingt derzeit mit hinreichender Präzision und Lebensdauer. Contour guidance devices, in particular cam controls, are known. These serve, especially in engine technology, valves in the cylinder head of a To run the reciprocating machine in time and place. This is currently working with sufficient precision and durability.

Ziel der Erfindung ist es, eine derartige Bahnführung für den Kolben eines Hubkolbenaggregates vorzusehen, insbesondere für den einer Verbrennungskraftmaschine. The aim of the invention is to provide such a web guide for the piston To provide reciprocating unit, especially for one Internal combustion engine.

Da hierbei - im Vergleich zu einer reinen Ventilsteuerung - mit hohen Flächendrücken zu rechnen ist, soll die erfindungsgemäße Konstruktion vor allem im Bereich der Werkstoffpaarung (z. B. Hartmetallwerkstoffe) und Schmierung (z. B. Ölhochdruckumlauf) auf dem neusten Stand der Technik sein. Because here - in comparison to a pure valve control - with high Surface pressures are to be expected, the construction according to the invention is intended above all in Range of material pairing (e.g. hard metal materials) and lubrication (e.g. High-pressure oil circulation) must be state of the art.

Es lohnt sich jedoch vorgenannten Aufwand zu betreiben; dies insbesondere aus folgenden Gründen:
Mit einer speziellen Konturausbildung der Nocke ist es beispielsweise möglich, dem Kolben im oberen (und/oder im unteren) Totpunkt eine Verweilzeit zu vermitteln, um dem Verbrennungsgeschehen (und ggf. dem Gaswechsel) optimale Voraussetzungen zu geben (Gleichraumverbrennung).
Außerdem kann auf eine kostspielige Kurbelwelle und ein zusätzliches Pleuel inklusive Kolbenbolzen verzichtet werden.
Zudem ergeben sich weniger Massenkräfte, welches in einem höheren Drehzahlniveau resultiert.
Der Motor baut kleiner und wird leichter sowie kostengünstiger.
Der Treibstoffkonsum wird nahezu halbiert und die Abgasqualität um ein vielfaches verbessert.
Es können auch minderwertigere, schwerentflammbare Treibstoffe zum Einsatz gelangen. However, it is worthwhile to make the aforementioned effort; in particular for the following reasons:
With a special contour design of the cam, it is possible, for example, to give the piston a dwell time at the top (and / or bottom) dead center in order to give the combustion process (and possibly the gas exchange) optimal conditions (uniform combustion).
In addition, there is no need for an expensive crankshaft and an additional connecting rod including a piston pin.
In addition, there are fewer inertial forces, which results in a higher speed level.
The engine builds smaller and becomes lighter and cheaper.
The fuel consumption is almost halved and the exhaust gas quality is improved many times over.
Inferior, flame-retardant fuels can also be used.

Ein prinzipielles Ausführungsbeispiel der Erfindung ist in der nachfolgender Fig. 1 dargestellt:
Mit 1a (1b) ist die Konturführungseinrichtung (Nocke) bezeichnet. Sie dreht um das Zentrum 0. Die Ziffer 2 markiert den (Hub-) Kolben, welcher über elastische Medien (hier: Zugfedern) 3 in Kontakt mit der Nocke gehalten wird. A basic embodiment of the invention is shown in the following FIG. 1:
With 1 a ( 1 b) the contour guiding device (cam) is designated. It rotates around center 0 . The number 2 marks the (lifting) piston, which is held in contact with the cam via elastic media (here: tension springs) 3 .

Stellt man sich einen Doppelkolben vor - statt der Gehäusewand 4 einen weiteren (nicht gezeigten) Kolben, mit (nicht gezeigten) Verbindungskörpern - so könnte auf die Federn ganz verzichtet werden (quasi: desmodromische Steuerung); oder aber ein in sich vollständig statisch und dynamisch ausgewuchtetes System hergestellt werden. If you imagine a double piston - instead of the housing wall 4, another piston (not shown) with connecting bodies (not shown) - the springs could be completely dispensed with (quasi: desmodromic control); or a completely static and dynamically balanced system can be produced.

Der Kolben wird in dem Zylinder 5 seitlich geführt. The piston is guided laterally in the cylinder 5 .

Erfindungsgemäßes Aggregat ist einfach und kostengünstig in der Herstellung und effektiv in seiner Wirkung. Es ist Zwei- oder Viertaktbetrieb möglich. The unit according to the invention is simple and inexpensive to manufacture and effective in its effect. Two or four stroke operation is possible.

Claims (4)

1. Hubkolbenaggregat, insbesondere Verbrennungskraftmaschine mit wenigstens einem Zylinder 5 und darin verschieblich angeordnetem Kolben 2, dadurch gekennzeichnet, dass die Kolbenbahn steuernde Funktion durch die Rotation eines speziell geformten Nockens 1a (1b) passiert. 1. Reciprocating piston unit, in particular internal combustion engine with at least one cylinder 5 and piston 2 displaceably arranged therein, characterized in that the piston path control function occurs by the rotation of a specially shaped cam 1 a ( 1 b). 2. Hubkolbenaggregat nach Anspruch 1, dadurch gekennzeichnet, dass die Konturnachführung auf dem Nocken durch elastische Medien, insbesondere Zugfedern 3 unterstützt wird. 2. Reciprocating unit according to claim 1, characterized in that the contour tracking on the cam is supported by elastic media, in particular tension springs 3 . 3. Hubkolbenaggregat nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die elastischen Medien 3 kraftschlüssig am Gehäuse 4 kontaktiert sind. 3. Reciprocating unit according to one of the preceding claims, characterized in that the elastic media 3 are non-positively contacted on the housing 4 . 4. Hubkolbenaggregat nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass zwei Kolben 2 mit (nicht gezeigten) Verbindungselementen diametral entlang der Nockenkontur 1a und 1b und vom Zylinder 5 geführt sind. 4. Reciprocating unit according to one of the preceding claims, characterized in that two pistons 2 with (not shown) connecting elements are guided diametrically along the cam contour 1 a and 1 b and from the cylinder 5 .
DE2001138837 2001-08-14 2001-08-14 Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement Withdrawn DE10138837A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2001138837 DE10138837A1 (en) 2001-08-14 2001-08-14 Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2001138837 DE10138837A1 (en) 2001-08-14 2001-08-14 Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement

Publications (1)

Publication Number Publication Date
DE10138837A1 true DE10138837A1 (en) 2003-02-27

Family

ID=7694729

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2001138837 Withdrawn DE10138837A1 (en) 2001-08-14 2001-08-14 Reciprocating piston appliance esp. IC engine with specially shaped cams to control piston movement

Country Status (1)

Country Link
DE (1) DE10138837A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7438121U (en) * 1974-11-15 1976-05-20 Senfftleben, Uwe, 4660 Gelsenkirchen ENGINE
CH577625A5 (en) * 1975-04-02 1976-07-15 Lamparter Bruno
EP0213230A1 (en) * 1985-08-23 1987-03-11 NAUTSCHNO PROIZVODSTVENA LABORATORIA za DVIGATELI s VATRESCHNO GORENE Modular internal-combustion engine
US4966067A (en) * 1989-02-27 1990-10-30 Sundstrand Corporation Involute cam actuator with piston drive
EP0702128A1 (en) * 1994-09-13 1996-03-20 POMEZIA S.r.l. Crank mechanism system for the transformation of reciprocating linear motion into rotary motion, particularly suitable for reciprocating endothermic engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7438121U (en) * 1974-11-15 1976-05-20 Senfftleben, Uwe, 4660 Gelsenkirchen ENGINE
CH577625A5 (en) * 1975-04-02 1976-07-15 Lamparter Bruno
EP0213230A1 (en) * 1985-08-23 1987-03-11 NAUTSCHNO PROIZVODSTVENA LABORATORIA za DVIGATELI s VATRESCHNO GORENE Modular internal-combustion engine
US4966067A (en) * 1989-02-27 1990-10-30 Sundstrand Corporation Involute cam actuator with piston drive
EP0702128A1 (en) * 1994-09-13 1996-03-20 POMEZIA S.r.l. Crank mechanism system for the transformation of reciprocating linear motion into rotary motion, particularly suitable for reciprocating endothermic engines

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