Brennkraftmaschine mit hydraulischen variablen Ventilen

In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston (21) slidably mounted in a guide bushing (22). Between the actuating piston (21) and the stem of the respective valve is interposed an auxi...

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Bibliographic Details
Main Authors VATTANEO, FRANCESCO, SARETTO, ROBERTO, MICELLI, DAMIANO, VAFIDIS, CONSTANTINOS
Format Patent
LanguageGerman
Published 29.11.2007
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston (21) slidably mounted in a guide bushing (22). Between the actuating piston (21) and the stem of the respective valve is interposed an auxiliary hydraulic tappet (400) positioned outside the guide bushing (22) of the actuating piston (21), so that said bushing can be dimensioned with a relatively small diameter, regardless of the outer diameter of the auxiliary hydraulic tappet (400). The intake valves of a same cylinder are actuated by a single cam, by means of a single pumping piston (16) and by means of a single pressure chamber controlled by a single solenoid valve (24).
Bibliography:Application Number: DE20046005476T