Exhaust valve timing control responsive to engine knock and...

Details Exhaust valve timing control responsive to engine knock and... Exhaust valve timing control responsive to engine knock and...

F - Mech Eng,Light,Heat,Weapons

02

D

F02D 9/04 (2006.01) F02D 9/08 (2006.01) F02D 13/02 (2006.01)

Patent

CA 2164203

A method of operating a two-stroke cycle internal cycle internal engine having at least one exhaust port communicating with each combustion chamber of the engine and an exhaust valve operably associated with at least one said exhaust port to vary the timing of the opening of the exhaust port, the method comprising retarding the timing of the opening of the exhaust port in response to the detection of knock occurring in the combustion chamber of the engine associated therewith. Also disclosed and claimed is a method of engine operation comprising briefly retarding the timing of the opening of the exhaust port in response to a signal indicating a momentary drop in engine torque is required.

Procédé de commande du fonctionnement d'un moteur deux temps à combustion interne dans lequel au moins un orifice d'échappement communique avec chaque chambre de combustion du moteur et une soupape d'échappement qui est associée fonctionnellement avec ce (ou ces) orifice(s) d'échappement pour faire varier la synchronisation de l'ouverture de l'orifice d'échappement; ce procédé comprenant le retardement de la synchronisation de l'ouverture de l'orifice d'échappement en réponse à la détection du cliquetis se produisant dans la chambre de combustion du moteur à laquelle il est associé. Cette invention concerne également un procédé de commande du fonctionnement d'un moteur comprenant le retardement de courte durée de la synchronisation de l'ouverture de l'orifice d'échappement en réponse à un signal indiquant une baisse temporaire du couple moteur.

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