Cylinder head
AssigneeMazda Motor Corporation
InventorTakakazu Onishi
Life of this patent
Estimating the term…
Abstract
A cylinder head, where a pivot member configured to pivotably support a rocker arm is fastened with a bolt, is provided. The cylinder head includes a bottom wall part forming an inner bottom surface of a cam chamber that is a space where the rocker arm is disposed, and a side wall part forming an internal surface continuously rising from the inner bottom surface. A bolt hole into which the bolt is inserted is formed in the inner bottom surface. The side wall part has a protrusion protruding inward in the cam chamber from the internal surface at a position separated from the inner bottom surface, and a support hole configured to support the pivot member is formed in the protrusion.
Claims9
A cylinder head for fastening to a cylinder block via a bolt, the cylinder head comprising:
- a hydraulic lash adjuster configured to pivotally support a rocker arm;
- a bottom wall part forming an inner bottom surface of an exhaust-side cam chamber that is a space where the rocker arm is disposed;
- and
- a side wall part forming an internal surface continuously rising from the inner bottom surface,
- wherein the bolt is inserted into a bolt hole formed in the inner bottom surface,
- wherein the side wall part includes a protrusion extending into the exhaust-side cam chamber from the internal surface at a position separated from the inner bottom surface, the protrusion including a support hole configured to support the hydraulic lash adjuster,
- wherein a first portion of the internal surface, between the protrusion and the inner bottom surface, is recessed away from the bolt hole, and
- wherein a lower-end portion of the hydraulic lash adjuster is supported by a seat surface formed in the inner bottom surface between the first portion and the bolt hole.
Dependencies are inferred from the claim text.