DE19504735A1 - Crank drive mechanism changing IC engine compression ratio - Google Patents

Crank drive mechanism changing IC engine compression ratio

Info

Publication number
DE19504735A1
DE19504735A1 DE1995104735 DE19504735A DE19504735A1 DE 19504735 A1 DE19504735 A1 DE 19504735A1 DE 1995104735 DE1995104735 DE 1995104735 DE 19504735 A DE19504735 A DE 19504735A DE 19504735 A1 DE19504735 A1 DE 19504735A1
Authority
DE
Germany
Prior art keywords
compression ratio
connecting rod
crank drive
drive mechanism
engine compression
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Withdrawn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
DE1995104735
Other languages
German (de)
Inventor
Dieter Dipl Ing Prosser
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 DE1995104735 priority Critical patent/DE19504735A1/en
Priority to DE19517590A priority patent/DE19517590A1/en
Publication of DE19504735A1 publication Critical patent/DE19504735A1/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Withdrawn legal-status Critical Current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
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/32—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with additional members comprising only pivoted links or arms
    • 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
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Abstract

The angular position of a double connecting rod is changed by an adjustable hinged connecting rod to increase or reduce the angle. This results in the shift of the piston stroke upwards or downwards for the change of the compression ratio even during the engine operation. The changes result in more effective combustion pressure, higher performance and power yield for conversion into a rotary movement.

Description

Zur Erreichung von immer verbrauchs- und emissionsärmeren Automobilen, d. h. natürlich deren Motoren, wird um jeden Prozentpunkt der Verbesserung gerungen.To achieve increasingly low-consumption and low-emission automobiles, d. H. their engines, of course, are down by every percentage point struggled to improve.

Wesentliche Komponenten, die auch den Charakter einer Brennkraftmaschine bestimmen, sind die Steuerzeiten des Gaswechsels und das Verdichtungsverhältnis. Bei "normalen" Serienmotoren sind diese in der Regel unveränderlich und zwar über den gesamten Drehzahlbereich des Motors.Essential components that also have the character of an internal combustion engine determine the timing of the gas change and that Compression ratio. In "normal" series engines, these are usually unchangeable over the entire speed range of the motor.

Besser und wirtschaftlicher wäre es, diese variabel also veränderlich zu machen und sie den jeweiligen Drehzahlen und Betriebsverhältnissen anzupassen.It would be better and more economical to make them variable, so changeable to make and the respective speeds and operating conditions adapt.

Für variable Steuerzeiten gibt es viele, auch patentierte Vorschläge, wovon in neuerer Zeit einige in Serienmotoren mit diesem Ziel verwirklicht worden sind.There are many suggestions for variable tax times, including patented ones, some of which have recently been used in series engines with this aim have been realized.

Für variable Verdichtungsverhältnisse gibt es ebenfalls Vorschläge aber in die Praxis wurden davon - abgesehen von einzelnen Rennmotoren - noch keine umgesetzt. Der Grund: Es gibt Vorschläge über die Veränderung des Zylinderkopfes - die sind sehr aufwendig, weil z. B. der ganze Motorblock gehoben oder gesenkt werden muß oder wenn nur kleine Teile verändert werden, ergibt sich eine Zerklüftung des Brennraumes, die dem Bestreben einer höheren Verdichtung entgegenläuft und somit sinnlos wird.There are also suggestions for variable compression ratios but in practice - apart from individual racing engines - none implemented yet. The reason: there are suggestions about the Modification of the cylinder head - they are very expensive because z. B. the whole engine block has to be raised or lowered or if only small parts are changed, there is a jagging the combustion chamber, which runs counter to the desire for higher compression and thus becomes pointless.

Eine andere Veränderung über die Veränderung des Kolbens d. h. meist des Kolbenbodens macht diesen unvermeidlich schwerer, was der Drehzahlbeweglichkeit nicht dienlich ist, womit ein möglicher Gewinn wieder aufgezehrt würde.Another change about the change in the piston d. H. most of time of the piston crown inevitably makes this heavier, which increases the speed agility is not useful, with which a possible profit would be consumed again.

Bleibt eine dritte Möglichkeit der Veränderung über die Veränderung des Kolbenhubes bzw. einer Verschiebung des selbens. Auch hier gibt es noch keinen brauchbaren Vorschlag.There remains a third possibility of change over change the piston stroke or a displacement of the same. Here too there is still no useful suggestion.

Die nachstehend beschriebene Konstruktion ist jedoch technisch sehr einfach und stabil und relativ unaufwendig, so daß eine baldige Realisierung auch in Serienmotoren möglich erscheint. However, the construction described below is technical very simple and stable and relatively inexpensive, so that soon Realization also seems possible in series engines.  

Aufbauend auf der bekannten Konstruktion eines sog. Doppelpleuels, welche den Verbrennungsdruck effektiver, also mit höherer Leistungsausbeute, in Drehbewegung umwandelt, wird der Aufnahmepunkt des Anlenkpleuels verstellbar gemacht und damit die Winkelstellung der beiden Pleuel verändert, was wiederum die Veränderung (Verstellung) des Kolbens und somit des Hubweges bewirkt und zwar entweder nach oben in Richtung des Brennraums und des Zylinderkopfes oder nach unten in Richtung des Kurbelgehäuses und der Ölwanne. Damit kann also das Verdichtungsverhältnis, also das Verhältnis von Hubraum zu Verbrennungsraum auch während des Betriebes verändert werden ohne daß sich der Hub selbst verändert.Building on the well-known construction of a so-called double connecting rod, which the combustion pressure more effectively, i.e. with a higher power yield, converted into rotary motion, the pickup point of the articulated connecting rod made adjustable and thus the angular position of the both connecting rods changed, which in turn changes (adjustment) of the piston and thus the stroke travel either after up towards the combustion chamber and the cylinder head or towards below towards the crankcase and the oil pan. So that can So the compression ratio, i.e. the ratio of displacement to change combustion chamber even during operation without the stroke changing itself.

Die Verstellung des Anlenkpleuels wird am einfachsten dadurch bewirkt, daß das Pleuel im Drehpunkt nicht auf einer zentrischen Welle gelagert wird, sondern auf einer exzentrischen Welle. Durch mechanisches, hydraulisches oder elektrisches - heute in jedem Fall elektronisch gesteuertes - Verdrehen dieser Welle um 180° wird die maximale Verstellung quer zur Zylinderachse erreicht. Es sind natürlich auch Mittelstellung und andere möglich, immer die, die eine optimale Verdichtung gemäß den jeweiligen Erfordernissen gewähren.The easiest way to adjust the connecting rod is to that the connecting rod at the pivot point is not on a central shaft is stored, but on an eccentric shaft. By mechanical, hydraulic or electrical - in any case today electronically controlled - turning this shaft by 180 ° becomes the maximum Adjustment across the cylinder axis reached. It is natural middle position and others possible, always the one that is optimal Allow compression according to the respective requirements.

Claims (1)

Kurbeltrieb, dadurch gekennzeichnet, daß er mittels eines verstellbaren Anlenkpleuels, die Stellung (den Winkel) eines Doppelpleuels verändern (vergrößern bzw. verkleinern) kann, was über die daraus resultierende Verschiebung des Kolbenhubes nach oben bzw. unten eine Veränderung des Verdichtungsverhältnisses einer Brennkraftmaschine auch während des Betriebes möglich macht.Crank drive, characterized in that it can change (increase or decrease) the position (angle) of a double connecting rod by means of an adjustable connecting rod, which, due to the resulting displacement of the piston stroke up or down, also changes the compression ratio of an internal combustion engine of the company.
DE1995104735 1995-02-06 1995-02-06 Crank drive mechanism changing IC engine compression ratio Withdrawn DE19504735A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1995104735 DE19504735A1 (en) 1995-02-06 1995-02-06 Crank drive mechanism changing IC engine compression ratio
DE19517590A DE19517590A1 (en) 1995-02-06 1995-05-08 Gas reversal system for multi=cylinder combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995104735 DE19504735A1 (en) 1995-02-06 1995-02-06 Crank drive mechanism changing IC engine compression ratio

Publications (1)

Publication Number Publication Date
DE19504735A1 true DE19504735A1 (en) 1996-08-08

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
DE1995104735 Withdrawn DE19504735A1 (en) 1995-02-06 1995-02-06 Crank drive mechanism changing IC engine compression ratio
DE19517590A Ceased DE19517590A1 (en) 1995-02-06 1995-05-08 Gas reversal system for multi=cylinder combustion engines

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19517590A Ceased DE19517590A1 (en) 1995-02-06 1995-05-08 Gas reversal system for multi=cylinder combustion engines

Country Status (1)

Country Link
DE (2) DE19504735A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017545A1 (en) * 1998-09-18 2000-03-30 Bernd Reimann Transmission with two transmission members which can be coupled by a coupling member and method for coupling two transmission members
WO2001055606A1 (en) * 2000-01-24 2001-08-02 Gerhard Mederer Internal combustion engine
EP1154134A3 (en) * 2000-05-09 2002-11-20 Nissan Motor Company, Limited Variable compression ratio mechanism for reciprocating internal combustion engine
EP1215380A3 (en) * 2000-12-15 2003-05-02 Nissan Motor Co., Ltd. Crank mechanism of reciprocating internal combustion engine of multi-link type
EP1380739A1 (en) * 2002-07-11 2004-01-14 Nissan Motor Co., Ltd. Compression ratio controlling apparatus and method for spark-ignited internal combustion engine
CN106089424A (en) * 2016-08-18 2016-11-09 江苏三能动力总成有限公司 A kind of variable-displacement electromotor
WO2023123871A1 (en) * 2021-12-28 2023-07-06 孙鑫 Dual-connection crank-piston mechanism

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2120346B1 (en) * 1995-11-10 1999-05-16 Campo Garraza Pedro Jose ALTERNATIVE LINEAR DRIVE MECHANICAL DEVICE.
US8215292B2 (en) 1996-07-17 2012-07-10 Bryant Clyde C Internal combustion engine and working cycle
EE00256U1 (en) * 2000-07-07 2001-01-15 Loktaevski Viktor Piston engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2734715A1 (en) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Piston engine with increased TDC dwell time - has articulated piston rod link swivelling on adjustable pivot away from cylinder centre
DE2935073A1 (en) * 1979-08-30 1981-03-12 Scherf, geb. Kindermann, Eva, 8431 Kemnath Jointed connecting rod for IC engine - has both sections on same side of swinging lever which adjusts piston stroke
DE3145557A1 (en) * 1981-11-17 1983-05-26 Daimler-Benz Ag, 7000 Stuttgart Piston internal combustion engine with variable displacement
DE3715391A1 (en) * 1987-05-08 1988-12-01 Gerhard Mederer INTERNAL COMBUSTION ENGINE OR OTHER DRIVE
DE4210030A1 (en) * 1992-03-27 1993-09-30 Willi Weis Piston-type IC engine - has cylinder-liner sliding axially in synchronism with piston but for shorter stroke

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2734715A1 (en) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Piston engine with increased TDC dwell time - has articulated piston rod link swivelling on adjustable pivot away from cylinder centre
DE2935073A1 (en) * 1979-08-30 1981-03-12 Scherf, geb. Kindermann, Eva, 8431 Kemnath Jointed connecting rod for IC engine - has both sections on same side of swinging lever which adjusts piston stroke
DE3145557A1 (en) * 1981-11-17 1983-05-26 Daimler-Benz Ag, 7000 Stuttgart Piston internal combustion engine with variable displacement
DE3715391A1 (en) * 1987-05-08 1988-12-01 Gerhard Mederer INTERNAL COMBUSTION ENGINE OR OTHER DRIVE
DE4210030A1 (en) * 1992-03-27 1993-09-30 Willi Weis Piston-type IC engine - has cylinder-liner sliding axially in synchronism with piston but for shorter stroke

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017545A1 (en) * 1998-09-18 2000-03-30 Bernd Reimann Transmission with two transmission members which can be coupled by a coupling member and method for coupling two transmission members
WO2001055606A1 (en) * 2000-01-24 2001-08-02 Gerhard Mederer Internal combustion engine
EP1154134A3 (en) * 2000-05-09 2002-11-20 Nissan Motor Company, Limited Variable compression ratio mechanism for reciprocating internal combustion engine
US6546900B2 (en) 2000-05-09 2003-04-15 Nissan Motor Co., Ltd. Variable compression ratio mechanism for reciprocating internal combustion engine
EP1215380A3 (en) * 2000-12-15 2003-05-02 Nissan Motor Co., Ltd. Crank mechanism of reciprocating internal combustion engine of multi-link type
EP1380739A1 (en) * 2002-07-11 2004-01-14 Nissan Motor Co., Ltd. Compression ratio controlling apparatus and method for spark-ignited internal combustion engine
US6915766B2 (en) 2002-07-11 2005-07-12 Nissan Motor Co., Ltd. Compression ratio controlling apparatus and method for spark-ignited internal combustion engine
CN106089424A (en) * 2016-08-18 2016-11-09 江苏三能动力总成有限公司 A kind of variable-displacement electromotor
WO2023123871A1 (en) * 2021-12-28 2023-07-06 孙鑫 Dual-connection crank-piston mechanism

Also Published As

Publication number Publication date
DE19517590A1 (en) 1996-11-14

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OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licenses declared
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8139 Disposal/non-payment of the annual fee