Patent ID: 7182052
Filing Date: 2007-02-27
Classification: F01L

Abstract:
1. A valve timing controller provided in a driving force transfer system for transferring a driving force from a driving shaft of an internal combustion engine to a driven shaft for opening or closing at least one of an intake valve and an exhaust valve, the valve timing controller adjusting a timing of opening or closing at least one of the intake valve and the exhaust valve, the valve timing controller comprising: a housing including a plurality of receiving chambers that rotate along with one of the driving shaft and the driven shaft, the receiving chambers being arranged in a direction of rotation within a predetermined angle; a vane rotor that rotates with the other of the driving shaft and the driven shaft, the vane rotor having vanes respectively received in the receiving chambers, each of vanes being turned toward a retard side and toward an advance side relative to the housing by pressure of a working fluid in a plurality of retard hydraulic chambers and advance hydraulic chambers formed by partitioning the respective receiving chambers by the vanes; a retard passage for supplying the working fluid from a fluid supply source to the respective retard hydraulic chambers; a first advance passage for supplying the working fluid from the fluid supply source to the respective advance hydraulic chambers; a check valve disposed in a first advance passage, the check valve allowing a flow of the working fluid from the fluid supply source to the advance hydraulic chamber, the check valve prohibiting a flow of the working fluid from the advance hydraulic chamber to the fluid supply source; a second advance passage for discharging the working fluid in the advance hydraulic chamber, wherein the second advance passage discharges the working fluid in the advance hydraulic chamber when the fluid supply source supplies the working fluid into the retard hydraulic chambers; and a control valve that is disposed in the second advance passage and opens the second advance passage when valve timing is controlled to a retard side and closes the second advance passage when valve timing is controlled to an advance side.