Casing member for elements of internal combustion engines
AssigneeM.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
InventorHeribert Moller
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Abstract
A noise-reducing casing member for oil-containing elements of interval combustion engines. The walls of the casing member are converging stepped plates containing inward depressions and/or grooves for frequency detuning.
Claims4
A cast, noise-reducing casing member for enclosing oil-containing elements of internal combustion engines comprising at least two wall layers arranged in stepped relationship to one another, each said wall layer having a first surface comprising first spaced outer raised portions and first inwardly depressed portions spaced between said respective raised portions, wherein said wall layers form structure means which effects frequency detuning outside auditory range.
Dependencies are inferred from the claim text.