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Invention Grant
US07827947B2 Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines 有权
可变排量泵，使用可变排量泵的气门正时控制装置以及使用可变排量泵的气门正时控制系统，用于内燃机

Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines
Abstract:
A variable displacement pump including a chamber volume varying mechanism including a moveable member, a first biasing member always biasing the moveable member in such a direction as to increase volumes of the working fluid chambers, and a second biasing member that is disposed with a set load and applies a biasing force to the moveable member in such a direction as to increase the volumes of the working fluid chambers when the moveable member is displaced against a biasing force of the first biasing member by a predetermined amount or more. The biasing force of the first biasing member is set such that before the moveable member is displaced against the biasing force of the first biasing member, the valve timing control device is shifted to a release state in which an open-and-closure timing of an engine valve is variably controlled.
Abstract(Chinese):

一种可变排量泵，包括具有可移动构件的室容积变化机构，第一偏压构件总是沿着增加工作流体室的容积的方向偏置可移动构件;以及第二偏压构件，其设置有设定负载 并且当可移动构件克服第一偏置构件的偏置力移动预定量或更多的位移时，沿着这样一个方向施加偏置力到可移动构件。 第一偏置构件的偏置力被设定为使得在可移动构件克服第一偏置构件的偏置力之前移动，气门正时控制装置转移到释放状态，在该状态下，打开和关闭定时 发动机阀门可变地控制。

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