Engine with variable compression ratio for motor vehicles comprises a connecting rod consisting of a first part and a second part positioned relative to each other to adjust

Engine with variable compression ratio comprises a connecting rod via which a crankshaft rotating about a crank axis moves a piston backward and forward in a cylinder. The connecting rod consists of a first part and a second part positioned relative to each other to adjust the effective length of th...

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Bibliographische Detailangaben
Hauptverfasser:	MADIN, MARK MICHAEL, RAO, V. DURGA NAGESWAR, IMAI, YASH ANDREW
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BEARINGS BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Engine with variable compression ratio comprises a connecting rod via which a crankshaft rotating about a crank axis moves a piston backward and forward in a cylinder. The connecting rod consists of a first part and a second part positioned relative to each other to adjust the effective length of the connecting rod and thus the compression ratio for the cylinder, and a locking mechanism (38) which can be selectively brought into a locking state to lock the first part with the second part in a position corresponding to a specified effective length of the connecting rod and into an unlocking state in which the first part and the second part are positioned relative to each other at an effective length differing from the specified effective length. The locking mechanism has a first element (38C1) and a second element (38C2) which move away from one another and move toward each other to transfer the locking mechanism from one state into the other state. An Independent claim is also included for the variable-length connecting rod. Preferred Features: The first part of the connecting rod has a through hole (50B) having a longitudinal axis parallel to the crankshaft axis. The second part of the connecting rod has a bore also having a longitudinal axis parallel to the crankshaft axis. Verriegelungsmechanismus für Variabelverdichtungsverhältnis-Pleuelstange, mit einem ersten Verriegelungsmechanismus (38), um Pleuelstangenteile lösbar in einem ersten Längen-Setzvorgang (12) der Stange zu verriegeln, und einem zweiten Verriegelungsmechanismus (36), um Pleuelstangenteile lösbar in einem zweiten Längen-Setzvorgang zu verriegeln, um das Verdichtungsverhältnis eines Motorzylinders zu verändern. Wenn eine Längenänderung ausgeführt werden soll, entriegelt Hydraulikfluid einen verriegelten Verriegelungsmechanismus, wobei der Trägheitskraft erlaubt wird, die Längenänderung während eines Motorzyklus zu bewirken. Beim Abschluss einer Längenänderung entriegelt der andere Verriegelungsmechanismus automatisch.