A control module for controlling hydraulically actuated...

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 37/04 (2006.01) F01L 9/02 (2006.01) F02M 57/02 (2006.01)

Patent

CA 2280525

Disclosed is a control module (10) which controls camless hydraulically driven intake and exhaust valves (20, 22) and a hydraulically driven fuel injector (18) of an internal combustion engine. The module (10) contains a valve assembly to control the intake valve (20), a valve assembly to control the exhaust valve (22) and a valve assembly to control the fuel injector (18). The valve assemblies preferably each contain a pair of solenoid actuated two-way spool valves. The solenoids are actuated by digital pulses provided by an electronic assembly within the module. The solenoid actuated spool valves control the flow of a hydraulic fluid to and from the fuel injector (18) and the intake and exhaust valves (20, 22). The hydraulic fluid opens and closes the intake and exhaust valves (20, 22) as well as the fuel injector (18).

L'invention concerne un module de commande (10) qui commande des soupapes d'admission/d'échappement (20, 22) entraînées hydrauliquement sans came et un injecteur de carburant (18) entraîné hydrauliquement d'un moteur à combustion interne. Le module (10) contient un ensemble vanne pour commander la soupape d'admission (20), un ensemble vanne pour commander la soupape d'échappement (22) et un ensemble vanne pour commander l'injecteur de carburant (18). Les ensembles vannes contiennent de préférence chacun une paire de distributeurs à tiroir cylindrique deux voies, actionnés par solénoïde. Les solénoïdes sont attaqués par des impulsions numériques fournies par un ensemble électronique monté dans le module. Les distributeurs à tiroir cylindrique actionnés par solénoïde commandent le flux d'un fluide hydraulique en direction de l'injecteur de carburant (18) et des soupapes d'admission et d'échappement (20, 22), et en sens inverse. Le flux hydraulique ouvre et ferme les soupapes d'admission et d'échappement (20, 22) ainsi que l'injecteur de carburant (18).

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