F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 13/02 (2006.01) F01L 1/00 (2006.01) F01L 1/44 (2006.01) F01L 13/00 (2006.01)
Patent
CA 2540729
An internal combustion engine having a timing device for advancing operation of an exhaust valve, and a method of operating the exhaust valve, wherein the timing device opens the exhaust valve less than 90 degrees before bottom dead center in a terminal portion of the power stroke of the engine, but more than approximately 30 degrees before the bottom dead center. The engine is a four-stroke engine, and the open interval of the exhaust extends into the exhaust stroke. The advancement in the opening of the exhaust valve reduces fuel consumption.
Il s'agit d'un moteur à combustion interne pourvu d'un variateur d'avance dont la fonction est de devancer le fonctionnement d'une soupape d'échappement, ainsi que d'un moyen de faire fonctionner la soupape d'échappement en question. Le variateur d'avance entraîne l'ouverture de la soupape d'échappement moins de 90 degrés avant le point mort bas pendant la phase terminale de temps moteur, mais plus de 30 degrés avant le point mort bas, approximativement. Le moteur en question est de type quatre temps et la période d'ouverture de la soupape d'échappement se prolonge pendant le temps d'échappement. L'avance de l'ouverture de la soupape d'échappement permet de réduire la consommation de carburant du moteur.
Perley-Robertson Hill & Mcdougall Llp
Robinson Barnett J.
LandOfFree
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