AT519303A3 - Connecting rod with stepped piston - Google Patents

Connecting rod with stepped piston

Info

Publication number
AT519303A3
AT519303A3 ATA50928/2017A AT509282017A AT519303A3 AT 519303 A3 AT519303 A3 AT 519303A3 AT 509282017 A AT509282017 A AT 509282017A AT 519303 A3 AT519303 A3 AT 519303A3
Authority
AT
Austria
Prior art keywords
connecting rod
length
piston
internal combustion
combustion engine
Prior art date
Application number
ATA50928/2017A
Other languages
German (de)
Other versions
AT519303A2 (en
AT519303B1 (en
Inventor
Kai Arens Dr
Riba Zóltan
Bodensteiner Martin
Latz Steffen
Heller Malte
Norbert Mayrhofer Dr
Original Assignee
Avl List Gmbh
Iwis Motorsysteme Gmbh & Co Kg
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 Avl List Gmbh, Iwis Motorsysteme Gmbh & Co Kg filed Critical Avl List Gmbh
Publication of AT519303A2 publication Critical patent/AT519303A2/en
Publication of AT519303A3 publication Critical patent/AT519303A3/en
Application granted granted Critical
Publication of AT519303B1 publication Critical patent/AT519303B1/en

Links

Classifications

    • 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
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • 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
    • F16C7/06—Adjustable connecting-rods
    • 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

Abstract

Die vorliegende Erfindung betrifft eine längenverstellbare Pleuelstange (6.1, 6.2, 6.3) für einen Verbrennungsmotor (1) mit einem ersten (17.1, 17.2, 17.3) und einem zweiten Pleuelteil (18.1, 18.2, 18.3), die gegeneinander bewegbar sind, um die Länge der Pleuelstange (6.1, 6.2, 6.3) zu verstellen, und mittels mindestens einer Zylinder-Kolben-Einheit (20.1, 20.2, 20.3) verstellbar sind. Die Zylinder-Kolben-Einheit (20.1, 20.2, 20.3) umfasst mindestens eine Zylinderbohrung (33.1, 34.1), einen in der Zylinderbohrung (33.1, 34.1) längst bewegbar angeordneten Verstellkolben (21.1), eine Kolbenstange (28.1) und mindestens einen in der Zylinderbohrung (33.1) vorgesehenen ersten Druckraum (40.1) zur Aufnahme von Motoröl, der einseitig von einer Stirnseite (24.19 des bewegbaren Verstellkolbens (21.1) begrenzt ist. Des Weiteren ist ein hydraulisches Schaltelement (57.1) zum Schalten von Zu- und Ablauf des Motoröls in bzw. aus dem Druckraum (40.1) vorgesehen. Die vorliegende Erfindung stellt eine längenverstellbare Pleuelstange (6.1, 6.2, 6.3) bereit, die in stark begrenztem Bauraum eingesetzt werden kann und die benötigte hohe Lebensdauer aufweist. Hierzu ist der Verstellkolben (21.1) abgesetzt und weist mindestens zwei weitere Stirnflächen (25.1, 26.1, 27.1) auf, sodass mindestens zwei weitere Druckräume (41.1, 42.1, 43.1) ausgebildet sind. Ferner bezieht sich die Erfindung auch auf die Verwendung einer solchen Pleuelstange (6.1, 6.2, 6.3) in einem Verbrennungsmotor (1) und auf einen Verbrennungsmotor (1) mit einer solchen längenverstellbaren Pleuelstange (6.1, 6.2, 6.3).The present invention relates to a length-adjustable connecting rod (6.1, 6.2, 6.3) for an internal combustion engine (1) with a first (17.1, 17.2, 17.3) and a second connecting rod (18.1, 18.2, 18.3), which are mutually movable to the length the connecting rod (6.1, 6.2, 6.3) to adjust, and by means of at least one cylinder-piston unit (20.1, 20.2, 20.3) are adjustable. The cylinder-piston unit (20.1, 20.2, 20.3) comprises at least one cylinder bore (33.1, 34.1), one in the cylinder bore (33.1, 34.1) long movably arranged adjusting piston (21.1), a piston rod (28.1) and at least one in the Cylinder bore (33.1) provided for receiving motor oil, which is bounded on one side by a front side (24.19 of the movable adjusting piston (21.1).) Furthermore, a hydraulic switching element (57.1) for switching inlet and outlet of the engine oil in The present invention provides a length-adjustable connecting rod (6.1, 6.2, 6.3) which can be used in a very limited space and has the required high service life has at least two further end faces (25.1, 26.1, 27.1), so that at least two further pressure chambers (41.1, 42.1, 43.1) are formed It also relates to the use of such a connecting rod (6.1, 6.2, 6.3) in an internal combustion engine (1) and to an internal combustion engine (1) with such a length-adjustable connecting rod (6.1, 6.2, 6.3).

ATA50928/2017A 2016-11-03 2017-11-03 Connecting rod with stepped piston AT519303B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016120942.2A DE102016120942A1 (en) 2016-11-03 2016-11-03 Connecting rod with stepped piston

Publications (3)

Publication Number Publication Date
AT519303A2 AT519303A2 (en) 2018-05-15
AT519303A3 true AT519303A3 (en) 2019-03-15
AT519303B1 AT519303B1 (en) 2019-06-15

Family

ID=60245104

Family Applications (1)

Application Number Title Priority Date Filing Date
ATA50928/2017A AT519303B1 (en) 2016-11-03 2017-11-03 Connecting rod with stepped piston

Country Status (3)

Country Link
AT (1) AT519303B1 (en)
DE (1) DE102016120942A1 (en)
WO (1) WO2018083263A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102387966B1 (en) 2018-04-06 2022-04-18 가부시키가이샤 아이에이치아이 Variable Compression Units and Engine Systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747091A (en) * 1926-08-09 1930-02-11 Trbojevich Nikola Internal-combustion engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217721A (en) 1938-09-14 1940-10-15 Mary Adeline Reynolds Internal combustion engine
DE19835146A1 (en) * 1998-08-04 1999-06-10 Daimler Chrysler Ag Automotive engine connecting rod
DE10255299A1 (en) 2002-11-27 2004-06-17 Fev Motorentechnik Gmbh Connecting rod for use on a reciprocating engine with variable adjustable compression ratio
DE102005055199B4 (en) 2005-11-19 2019-01-31 FEV Europe GmbH Reciprocating internal combustion engine with adjustable variable compression ratio
AT511803B1 (en) 2011-12-23 2013-03-15 Avl List Gmbh CONNECTING ROD FOR A PUSH-PISTON MACHINE
AT514071B1 (en) 2013-10-18 2014-10-15 Avl List Gmbh Length adjustable connecting rod
DE102015001066B3 (en) * 2015-01-29 2015-10-22 Armin Brunner Hydraulically adjustable connecting rod
DE102015203387A1 (en) * 2015-02-25 2016-08-25 Fev Gmbh Double-acting piston of a VCR engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747091A (en) * 1926-08-09 1930-02-11 Trbojevich Nikola Internal-combustion engine

Also Published As

Publication number Publication date
AT519303A2 (en) 2018-05-15
AT519303B1 (en) 2019-06-15
DE102016120942A1 (en) 2018-05-03
WO2018083263A1 (en) 2018-05-11

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Legal Events

Date Code Title Description
MM01 Lapse because of not paying annual fees

Effective date: 20221103