초록 ▼

An exhaust manifold for an internal combustion engine includes an inner duct with flanges for connection to an engine. The inner duct is enclosed by an envelope consisting of two shells which are interconnected at their edges by seams. Between the inlet flanges, the seams are disposed at a substanti

An exhaust manifold for an internal combustion engine includes an inner duct with flanges for connection to an engine. The inner duct is enclosed by an envelope consisting of two shells which are interconnected at their edges by seams. Between the inlet flanges, the seams are disposed at a substantially greater distance from the inner duct than in other areas such that, in a cross-sectional plane disposed between, and extending normal to, the flanges, the envelope has drop-like shape.

대표청구항 ▼

An exhaust manifold for an internal combustion engine comprising: an inner duct having at least two inlets and one outlet with all of the inner duct inlets being parallel to each other, a separate inlet flange connected to each inlet for mounting said manifold to an engine to receive engine exhaust

An exhaust manifold for an internal combustion engine comprising: an inner duct having at least two inlets and one outlet with all of the inner duct inlets being parallel to each other, a separate inlet flange connected to each inlet for mounting said manifold to an engine to receive engine exhaust gases, an outlet flange connected to said outlet for the mounting of an exhaust pipe and an envelope enclosing said inner duct between said inlet and outlet flanges, said envelope comprising two half shells having circumferential edges which are interconnected by a seam and which closely surround said inner duct adjacent said inlet and outlet flanges, but are otherwise spaced from said inner duct so as to provide for an insulating air space between said inner duct and said enclosure, said seam being disposed in the area between said inlets at a substantially greater distance from said inner duct than in any other area such that, in all cross-sectional planes disposed between, and extending normal to, said inlet flanges, said envelope has a drop-like shape.