Exhaust manifold for internal combustion engines
Patent
·
OSTI ID:6564248
This patent describes an exhaust manifold for an internal combustion engine having cylinders and at least one exhaust pipe, comprising: exhaust ducts formed of discrete pipe members, the exhaust ducts having respective exhaust conduits defined therein and connected at upstream ends thereof to respective ones of the cylinders; a united section having an upstream divergent portion connected to downstream ends of the exhaust ducts and having a downstream convergent portion having at least two internal passages defined therein and a peripheral wall; and a flange member coupled with the downstream convergent portion of the united section for connecting the united section to the at least one exhaust pipe. The improvement is described wherein: (a) an internal space is defined in the downstream convergent portion of the united section and at a location intermediate between adjacent ones of the at least two internal passages to communicate them with each other; (b) an opening is formed in the peripheral wall of the downstream convergent portion at a location positionally corresponding to the internal space; and (c) the flange member has a boss formed thereon, the boss being larger in size than the opening and disposed in face-to-face contact with an outer surface of the peripheral wall of the downstream convergent portion, the boss having a through bore formed therein and aligned with the opening, through which an exhaust constituent concentration sensor is to be inserted.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4656830
- OSTI ID:
- 6564248
- Country of Publication:
- United States
- Language:
- English
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