CONTROL VALVE FOR VALVE TIMING CONTROL DEVICE AND VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
First Claim
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; and
a spool valve element axially slidably housed in the valve body 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 fixed part formed on an outer peripheral surface of the valve body nearer to the driven rotary member rather than near an axial distal end of the valve body, the fixed part being fixed in a fixing hole axially formed in the one axial end of the camshaft, andwherein the fixed part and the spool valve element are arranged to overlap with each other in an axial direction of the valve body.
2 Assignments
0 Petitions
Accused Products
Abstract
Provided is a control valve capable of reducing the axial length of a device as much as possible, thereby improving its mountability. An electromagnetic selector valve is equipped with a valve body functioning as a cam bolt for connecting a vane rotor to one end of a camshaft, a sleeve fixed to an inner peripheral surface of the valve body, and a spool valve element axially slidably housed in the sleeve for switching between supply and discharge of working fluid to and from each of a phase-retard working chamber and a phase-advance working chamber. The valve body has a male screw part formed on an outer peripheral surface and screwed into a female screw part formed in a cam bolt hole. The position of formation of the male screw part and the position of the spool valve element are arranged to axially overlap with each other.
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Citations
18 Claims
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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:
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a cylindrical valve body configured to axially fixedly connect the driven rotary member to the camshaft; and a spool valve element axially slidably housed in the valve body 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 fixed part formed on an outer peripheral surface of the valve body nearer to the driven rotary member rather than near an axial distal end of the valve body, the fixed part being fixed in a fixing hole axially formed in the one axial end of the camshaft, and wherein the fixed part and the spool valve element are arranged to overlap with each other in an axial direction of the valve body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A valve timing control device for an internal combustion engine comprising:
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a driving rotary member adapted to receive a rotational force transmitted from a crankshaft and having an operating chamber formed therein; 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; and a control valve configured to perform supply-and-discharge control of the working fluid force-fed from an oil pump to and from each of the working chambers, the control valve comprising; a cylindrical valve body having a fixed part formed on an outer peripheral surface of the valve body for fixing the driven rotary member to the camshaft; a spool valve element axially slidably housed in the valve body and configured to perform switching between supply and discharge of the working fluid to and from each of the working chambers; and an actuator configured to control a movement of the spool valve element, wherein the fixed part and the spool valve element are arranged to overlap with each other in an axial direction of the valve body. - View Dependent Claims (18)
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Specification