Lash adjuster and valve apparatus
AssigneeOtics Corporation
InventorsHiroki Fujii, Kikuya Ichiishi
Life of this patent
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Abstract
A lash adjuster of the invention includes a body in a cylindrical shape and a plunger inserted to inside of the body. The plunger partitions a pressure chamber at inside of the body by being integrated to the body, and is moved in an axial direction at inside of the body by increasing or reducing a volume of inside of the pressure chamber by making a working fluid flow to inside of the pressure chamber or flow out from the pressure chamber. Further, between an inner peripheral face of the body and an outer peripheral face of the plunger, a spacer filling a gap between the two faces is interposed.
Claims11
A lash adjuster comprising:
- a body in a cylindrical shape;
- a plunger inserted to inside of the body, partitioning a pressure chamber at inside of the body by being integrated to the body, and moved in an axial direction at inside of the body by increasing or reducing a volume at inside of the pressure chamber by making a working fluid flow to inside of the pressure chamber or flow out from the pressure chamber;
- and
- a spacer interposed between an inner peripheral face of the body and an outer peripheral face of the plunger to fill a gap between the two faces.
A valve apparatus comprising:
- a cam rotated by being transmitted with a power of an engine;
- a rocker arm pivoted in accordance with rotation of the cam;
- a cylinder head including a feeding path of making a working fluid flow, recessed to be formed with a support hole at an upper face thereof and opened with an oil feeding port intersected with the filling path at an inner peripheral face of the support hole;
- and
- a lash adjuster of automatically adjusting a valve clearance of a valve inserted to the cylinder head;
- wherein the lash adjuster comprises:
- a body in a cylindrical shape inserted to inside of the support hole of the cylinder head;
- a plunger pivotably supporting the rocker arm at an upper end portion thereof, inserted to inside of the body, partitioning a pressure chamber at inside of the body by being integrated to the body, and moved in an axial direction at inside of the body by increasing and reducing a volume at inside of the pressure chamber by making a working fluid flow to inside of the pressure chamber by passing the oil filling port from the filling path or making the working fluid flow out from the pressure chamber;
- and
- a spacer interposed between an inner peripheral face of the body and an outer peripheral face of the plunger to fill a gap between the two faces.
Dependencies are inferred from the claim text.