VARIABLE VALVE TIMING DEVICE
A variable valve timing device with which the valve timing for an engine valve can be changed by the relative rotation of a vane rotor and a housing, and which is equipped with a lock mechanism the locking of which can be released in response to the application of lock-releasing hydraulic pressure,...
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Main Authors | , , |
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Format | Patent |
Language | English French Japanese |
Published |
11.10.2012
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Subjects | |
Online Access | Get full text |
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Summary: | A variable valve timing device with which the valve timing for an engine valve can be changed by the relative rotation of a vane rotor and a housing, and which is equipped with a lock mechanism the locking of which can be released in response to the application of lock-releasing hydraulic pressure, wherein the lock-releasing hydraulic pressure is established at a crank angle at which the cam torque is suitable for releasing of the lock, regardless of the engine rotational velocity NE, by changing the crank angle CCA, which specifies the application of the lock-releasing hydraulic pressure, in accordance with the engine rotational velocity NE.
L'invention porte sur un dispositif de calage de distribution variable qui permet le calage de distribution pour une soupape de moteur d'être modifié par une rotation relative entre un rotor à palettes et un boîtier et qui est équipé d'un mécanisme de verrouillage dont le verrouillage peut être supprimé en réponse à l'application d'une pression hydraulique de déverrouillage, la pression hydraulique de déverrouillage étant établie à un angle de vilebrequin auquel le couple de came est approprié pour déverrouiller, indépendamment de la vitesse de rotation du moteur NE, par modification de l'angle de vilebrequin CCA, qui spécifie l'application de la pression hydraulique de déverrouillage, en fonction de la vitesse de rotation NE du moteur. |
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Bibliography: | Application Number: WO2011JP58818 |