Exhaust manifold

Details Exhaust manifold Exhaust manifold

1997-09-03

1999-08-17

Lopez, F. Daniel

Power plants

Internal combustion engine with treatment or handling of...

Common receiver having inlets from plural cylinder

60322, F01N 710

Patent

active

059376422

ABSTRACT:
An exhaust manifold 10 is adapted for being mounted between a cylinder head and an exhaust pipe and has a plurality of branch pipes 12, 14, 16, 18 arranged in the longitudinal direction of the cylinder head. The exhaust manifold 10 also has a confluence 20 placed downstream the branch pipes 12, 14, 16, 18. The branch pipes 12, 14, 16, 18 join the confluence 20 which has a plurality of junctions 22, 24, 26. Each junction is formed with two adjoining branch pipes and provided with a cylinder head side portion 28, 30, 32 facing toward the cylinder head. The thickness of each cylinder head side portion is larger than the thicknesses of portions excluding the cylinder head side portions in the exhaust manifold, and the thickness 36 of the cylinder head side portion 30 arranged in the middle of the longitudinal direction of the cylinder head is the largest in the thicknesses 36, 38 of all of the cylinder head side portions 28, 30, 32. The exhaust manifold 10 can withstand the compressive stresses caused by the thermal expansion and can have less weight.

REFERENCES:
patent: 4372112 (1983-02-01), Ackerman et al.
patent: 5572868 (1996-11-01), Okamoto et al.
patent: 5706655 (1998-01-01), Kojima et al.

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