VARIABLE COMPRESSION RATIO APPARATUS

A variable compression ratio apparatus including an eccentric cam interposed at an internal circumference of a front end portion of a connecting rod, in which a first chamber is formed to realize a high compression ratio by a piston by rotating the eccentric cam in one direction and a second chamber...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KIM, Won Gyu, HWANG, Gyu Han, CHOI, Myungsik
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BEARINGS BLASTING COCKS COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS HYDRAULICS OR PNEUMATICS IN GENERAL INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A variable compression ratio apparatus including an eccentric cam interposed at an internal circumference of a front end portion of a connecting rod, in which a first chamber is formed to realize a high compression ratio by a piston by rotating the eccentric cam in one direction and a second chamber is formed to realize a low compression ratio by the piston by rotating the eccentric cam in an opposite direction may include a first spool valve selectively supplying a hydraulic pressure to expand the first chamber or the second chamber for realizing the high compression ratio and the low compression ratio; a second spool valve forming a control hydraulic pressure for the operation of the first spool valve; and an oil control valve controlling the operation of the second spool valve.