Damped heat shield

Details Damped heat shield Damped heat shield

1992-05-14

1993-08-10

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Common receiver having inlets from plural cylinder

181240, F01N 710

Patent

active

052338320

ABSTRACT:
A damped heat shield for a vehicle exhaust manifold includes inner and outer thin steel layers. An intermediate aluminum layer is located between the two steel layers. A high temperature corrosion-resistant coating is applied to the exterior surfaces and the edges of the shield. Such coating along the edges prevents the entry of corrosion producing substances into the interior of the shield. The outer steel layer has a thickness greater than the inner steel layer, so that the two layers do not resonate at the same frequency, and therefore, tend to damp vibrational energy more efficiently and reduce radiated sound energy and noise.

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patent: 4914912 (1990-04-01), Akatsuka

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