Vane type angular phase adjusting device
AssigneeNippondenso Co., Ltd.
InventorsMasayasu Ushida, Michio Adachi
Life of this patent
Estimating the term…
Abstract
Angular phase of a cam shaft of an internal combustion engine is adjusted by changing angular position of a vane rotor in a shoe housing. Each of vanes 2 has a couple of a check valve and a pilot valve which are moving members moving in parallel with the rotation axis to switch on and off oil passages. Since the moving members move in parallel with the rotation axis, the motion thereof is not affected by the centrifugal force caused by the rotation. Further, since the moving members are accommodated inside the vanes, sealing between advancing chambers and retarding chambers which are disposed opposite sides of the vanes can be ensured without increasing the size, particularly the outer diameter, of the device.
Claims19
A vane-type angular-phase-adjusting device having an input shaft and an output shaft comprising:
- a shoe housing having a circular space, and a fan-shaped space disposed radially outside said circular space formed inside said shoe housing and connected to one of said input and output shafts;
- a vane rotor having a vane at an outer periphery and a rotating shaft, said vane projecting radially from said outer periphery and is disposed rotatably in said fan-shaped space to partition said space into an advancing chamber and a retarding chamber;
- and
- a moving member, disposed inside said vane of said vane rotor, moving in response to oil pressure, said moving member comprising a member moving in a direction substantially in parallel with axes of said rotating shafts of said shoe housing and said vane rotor.
A vane-type angular-phase-adjusting device having an input shaft and an output shaft comprising:
- a shoe housing having a circular space, and a fan-shaped space disposed radially outside said circular space formed inside said shoe housing and connected to one of said input and output shafts;
- a vane rotor having a vane at an outer periphery, said vane projecting radially from said outer periphery and is disposed rotatably in said fan-shaped space to partition said space into an advancing chamber and a retarding chamber;
- and
- a moving member, disposed inside said vane of said vane rotor, moving in parallel with an axis of said vane rotor.
A valve timing control device disposed between a crank shaft and a cam shaft for controlling angular phase between said shafts comprising:
- a vane rotor connected to said cam shaft and having at least two vanes protecting radially therefrom;
- a shoe housing rotating in synchronism with said crank shaft and rotatably accommodating said vane rotor, said shoe housing having a shoe projecting into a circumferential space between said vanes and defines an advancing chamber and a retarding chamber;
- and
- a moving member, disposed inside said vane of said vane rotor, moving in parallel with an axis of said vane rotor and said shoe housing in response to oil pressure.
Dependencies are inferred from the claim text.