Invention Grant
US08453614B2 Variable valve timing device for internal combustion engine and manufacturing method therefor 有权
用于内燃机的可变气门正时装置及其制造方法

Variable valve timing device for internal combustion engine and manufacturing method therefor
Abstract:
A variable valve timing device for an internal combustion engine includes: a variable valve timing mechanism that changes a valve timing; and a phase limiting mechanism that locks a rotational phase between a housing rotor and a vane rotor at an intermediate phase. The phase limiting mechanism engages a first limiting pin with a first engaging groove and engages a second limiting pin with a second engaging groove to lock the housing rotor to the vane rotor. A retard-side side surface of an engaging hole is configured so as to be able to adjust a clearance between the second limiting pin and the retard-side side surface when the first limiting pin is engaged with a first advance end portion.
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