Intermediate lock pin type variable valve timing unit for vehicle and continuously variable valve timing device using the same
First Claim
1. An intermediate lock pin (ILP) type variable valve timing unit comprising:
- an ILP type stator having at least one chamber formed therein, wherein the chamber is defined between partition walls formed in an inner circumference of a stator body;
a rotor including a vane and accommodated in the chamber to rotate relatively between the partition walls of the stator; and
a locking maintaining portion provided in the chamber and configured to selectively lock the rotor to the stator so as to maintain locking of the stator and the rotor when an engine stops working;
wherein the lock maintaining portion comprises;
a guide projection formed to extend from the rotor, and provided with a locking hole formed on one side thereof;
a guide groove formed on the stator to receive the guide projection therein and guide the guide projection; and
a locking projection formed at an end portion of the guide groove to be selectively locked into the locking hole when the engine stops working,wherein a circumferential thickness between the locking projection and a distal end portion of the vane is shorter than a circumferential distance between the locking groove and the partition wall of the stator to prevent the vane from bumping against the partition wall of the stator.
1 Assignment
0 Petitions
Accused Products
Abstract
An intermediate lock pin (ILP) ILP type variable valve timing unit may include an ILP type stator having at least one chamber formed therein, a rotor accommodated in the chamber to rotate relatively to the ILP type stator, and a lock maintaining portion provided in the chamber to maintain locking of the stator and the rotor when an engine stops working. The ILP type continuously variable valve timing device includes an ILP type variable valve timing unit, an ILP type oil control valve mounted on a cam cap engaged with a cylinder head to operate a lock maintaining portion of the variable valve timing unit, and an ILP type oil flow path branched from a main oil flow path of the cylinder head to guide the supply of oil to the variable valve timing unit through the cam cap and the ILP type oil control valve.
15 Citations
11 Claims
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1. An intermediate lock pin (ILP) type variable valve timing unit comprising:
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an ILP type stator having at least one chamber formed therein, wherein the chamber is defined between partition walls formed in an inner circumference of a stator body; a rotor including a vane and accommodated in the chamber to rotate relatively between the partition walls of the stator; and a locking maintaining portion provided in the chamber and configured to selectively lock the rotor to the stator so as to maintain locking of the stator and the rotor when an engine stops working; wherein the lock maintaining portion comprises; a guide projection formed to extend from the rotor, and provided with a locking hole formed on one side thereof; a guide groove formed on the stator to receive the guide projection therein and guide the guide projection; and a locking projection formed at an end portion of the guide groove to be selectively locked into the locking hole when the engine stops working, wherein a circumferential thickness between the locking projection and a distal end portion of the vane is shorter than a circumferential distance between the locking groove and the partition wall of the stator to prevent the vane from bumping against the partition wall of the stator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification