Direct-acting type valve device for internal combustion engine

Abstract

PURPOSE: To simplify the adjustment of a valve clearance by screwing a valve stem into a valve lifter in such a way as to permit the free advance and retreatment thereof, and hooking a cam carrier to the valve stem for free advance and retreatment and the cam carrier to the valve lifter for turning. CONSTITUTION: In the adjustment of a valve clearance, the slope 19b of a projection 19a formed on one side of a cam carrier 19 is first lifted and the projection 19a is disengaged from a notch 16c formed on the projected groove 16f of a valve lifter 16. Then, the cam carrier 19 is turned by a predetermined angle and a valve stem 14 with the coupling part 14b thereof engaged with the coupling groove 19d of the cam carrier 19 is turned in the same direction. As a result, the valve lifter 16 moves up and down via a boss 16e screwed into the threaded part 14a of the valve stem 14. Then, after a valve clearance between the cam carrier 19 fitted to the recess 16b of the valve lifter 16 and the cam face 20a of a cam shaft 20 is adjusted, the projection 19a of the cam carrier 19 is coupled to the notch 16c of the valve lifter 16. COPYRIGHT: (C)1987,JPO&Japio

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    CN-103573318-AFebruary 12, 2014昆山市大久电子有限公司Valve tappet device for engine
    EP-1563961-A1August 17, 2005Ford Global Technologies, LLC, A subsidary of Ford Motor CompanyAppareillage et procédé de montage d'un mécanisme de soupape
    JP-H0230907-AFebruary 01, 1990Mitsubishi Motors CorpTappet type valve system with valve clearance adjusting mechanism