Cover structure for exhaust manifold inlet ducts

Details Cover structure for exhaust manifold inlet ducts Cover structure for exhaust manifold inlet ducts

1989-05-22

1990-05-15

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Common receiver having inlets from plural cylinder

F01N 710

Patent

active

049246690

ABSTRACT:
There is disclosed a cover unit of an exhaust manifold device in which sound-and-heat shielding covers are attached via bosses to upper and lower parts of exhaust manifold inlet ducts integral with flanges secured to a cylinder head. The cover unit has such a structure that when securing the flanges to the cylinder head, a portion, of a lower cover, on which a tool inserted to rotate bolts for fastening the flanges impinges undergoes a predetermined amount of deformation to admit insertion of the tool.

REFERENCES:
patent: 4612767 (1986-09-01), Engguist
patent: 4836160 (1989-06-01), Valev

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