Please download the dossier by clicking on the dossier button x
×

Control valve for valve timing control device and valve timing control device for internal combustion engine

  • US 10,145,273 B2
  • Filed: 01/09/2015
  • Issued: 12/04/2018
  • Est. Priority Date: 03/19/2014
  • Status: Active Grant
First Claim
Patent Images

1. A control valve for a valve timing control device equipped with a driving rotary member adapted to receive a rotational force transmitted from a crankshaft and having an operating chamber formed therein, and a driven rotary member fixed to one axial end of a camshaft and rotatably housed in the driving rotary member so as to partition the operating chamber into a phase-advance working chamber and a phase-retard working chamber, and configured to relatively rotate to either a phase-advance side or a phase-retard side with respect to the driving rotary member by supply and discharge of working fluid for both of the working chambers, the control valve comprising:

  • a cylindrical valve body configured to axially fixedly connect the driven rotary member to the camshaft;

    a sleeve fixedly connected to an inner periphery of the valve body; and

    a spool valve element axially slidably housed in the sleeve and configured to perform switching between supply and discharge of the working fluid to and from each of the working chambers,wherein the valve body has a male screw part formed on an outer peripheral surface of the valve body, and an introduction port, into which working fluid from a discharge passage of an oil pump driven by an internal combustion engine is introduced, the introduction port being formed at an axial distal end of the valve body,wherein the sleeve has passage grooves formed in an outer peripheral surface along an axial direction and configured to communicate with the introduction port, and oil holes formed as radial through holes at positions substantially corresponding to the passage grooves, andwherein the male screw part, the sleeve, and the spool valve element are arranged to overlap with each other in an axial cross-section of the valve body.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×