发明名称 VALVE TIMING CONTROLLER
摘要 A valve timing controller has a housing, a vane rotor, a valve body and a spool. The valve body has a supply port to communicate with an external oil feed section, a first drain port to communicate with a first oil pressure chamber, and a second drain port to communicate with a second oil pressure chamber. The supply port includes a supply recess recessed outward in a radial direction from an inner wall surface of a pipe part of the valve body. The second drain port includes a drain recess recessed outward in the radial direction from the inner wall surface of the pipe part. A depth of the drain recess in the radial direction is smaller than a depth of the supply recess in the radial direction.
申请公布号 US2016061063(A1) 申请公布日期 2016.03.03
申请号 US201514825415 申请日期 2015.08.13
申请人 DENSO CORPORATION 发明人 HAYASHI Masashi
分类号 F01L1/34 主分类号 F01L1/34
代理机构 代理人
主权项 1. A valve timing controller disposed in a passage where a driving force is transmitted from a driving shaft to a driven shaft of an internal combustion engine to control a valve timing of a valve driven to open and close by the driven shaft, the valve timing controller comprising: a housing rotatable with one of the driving shaft and the driven shaft; a vane rotor rotatable with the other of the driving shaft and the driven shaft, the vane rotor having a vane part that divides an interior space of the housing into a first oil pressure chamber on one side in a circumferential direction and a second oil pressure chamber on the other side in the circumferential direction; a valve body having a based cylindrical shape arranged coaxially with the vane rotor at a central part of the vane rotor, the valve body having a supply port to communicate with an external oil feed section, a first drain port to communicate with the first oil pressure chamber, and a second drain port to communicate with the second oil pressure chamber; and a spool movable in an axial direction inside of the valve body, the spool and the valve body defining a drain space, the spool opening the second drain port that is located adjacent to a bottom of the valve body than the first drain port is when discharging operation oil of the second oil pressure chamber to a drain oil passage which includes the drain space, wherein the supply port includes a supply recess recessed outward in a radial direction from an inner wall surface of a pipe part of the valve body, the second drain port includes a drain recess recessed outward in the radial direction from the inner wall surface of the pipe part, and a depth of the drain recess in the radial direction is smaller than a depth of the supply recess in the radial direction.
地址 Kariya-city JP