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US 4,546,734 AGranted
Hydraulic valve lifter for variable displacement engine
AssigneeAisin Seiki Kabushiki Kaisha
InventorHisashi Kodama
Life of this patent
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Abstract
A hydraulic valve lifter for variable displacement engine includes a valve housing, one-way valve disposed in the housing for controlling fluid communication between a working chamber and a reservoir, a sleeve member secured to one end of the valve housing and an axial bore therein and a plunger slidably disposed in the axial bore of the sleeve member. The outer diameter of the plunger is designed to be smaller than the inner diameter of the valve housing so that the inertia weight of the plunger may be reduced.
Claims7
A hydraulic valve lifter for variable displacement engine comprising:
- a hollow valve housing mounted on an engine cylinder head;
- a working chamber and a reservoir chamber in said valve housing;
- a one-way valve disposed within said valve housing for controlling fluid communication between said working and reservoir chambers;
- means for actuating said one-way valve;
- a sleeve member secured to an open end of said valve housing and having an axial bore therein;
- and
- a plunger member slidably disposed in said axial bore of said sleeve member, one end of said plunger being disposed in said working chamber and the other end thereof being in co-operative contact with a valve rocker arm, wherein an outer diameter of said plunger is smaller than an inner diameter of said valve housing.
4 more elements
Dependencies are inferred from the claim text.