Valve cover with decoupled NVH isolation and sealing features

摘要

A cylinder head cover, and a gasket are disclosed for sealing a cylinder head and isolating cylinder head vibrations from a cylinder head cover body. An example cylinder head cover may include a gasket having an elongate first gasket part and a flexible second gasket part sealingly coupled with the first gasket part along a length of the first gasket part. A bottom carrier may be configured to hold the first gasket part against a cylinder head for sealing engagement with the cylinder head. In addition a cover body may be configured to provide a covering surface sealingly coupled with the second gasket part at a spaced apart distance from the cylinder head.

主权项

1. A valve cover for an engine, comprising:
a valve-cover body spaced above a cylinder head of the engine; a valve cover gasket having a rounded, elongate first part to seal against the cylinder head, and a diaphragmatic second part received in a notch of the valve-cover body, the notch and the first part having substantially the same elevation relative to the cylinder head, the second part extending from the first part, toward the notch, in a direction consistently inboard the engine, the second part including a soft, flexible slack region to dampen noise from below the valve cover, the slack region statically curving up and away from the cylinder head and then back towards the cylinder head en route to the notch; and fastened to the cylinder head, a carrier clamp configured to substantially enclose the first part and provide sealing compression of the first part against the cylinder head.