Exhaust manifold
AssigneeCalsonic Kansei Corporation
InventorsSeiji Kato, Kunikazu Ban, Akira Kawamura
Life of this patent
Estimating the term…
Abstract
An exhaust manifold includes a plurality of branch pipes 2 to 5 and an adapter member 9 that has a ring portion 10 provided at exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5 and with a reinforcement portion 11. The adapter member 9 and the exhaust-gas downstream side end portions 2a to 5a, which are inserted into the adapter member 9, are fixed with each other by a circular weld line X1 formed along outer circumferences of the exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5 and also by a weld line X2 formed along the adjacent side wall portions 2b to 5b of the branch pipes 2 to 5.
Claims6
An exhaust manifold comprising:
- a plurality of branch pipes that are connected with a head flange;
- an adapter member;
- and
- a collecting part that is connected with exhaust-gas downstream side end portions of the branch pipes through the adapter member, wherein
- the adapter member has a ring portion and a reinforcement portion that is formed like a pillar with the ring portion as one unit, the pillar being formed along from an exhaust-gas upstream side end surface of the ring portion to an exhaust-gas downstream side end surface of the ring portion and toward a center of the ring portion from the ring portion, wherein
- the exhaust-gas downstream side end portions of the branch pipes are inserted into insertion holes formed between the ring portion and the reinforcement portion of the adapter member so that exhaust-gas downstream side end surfaces of the branch pipes are located on the same plane as the exhaust-gas downstream side end surface of the adapter member;
- and wherein
- the adapter member and the exhaust-gas downstream side end portions of the branch pipes are fixed with each other by a circular weld line formed along outer circumferences of the exhaust-gas downstream side end portions of the branch pipes at the exhaust-gas downstream side end surface of the adapter member and a weld line formed along adjacent side wall portions of the branch pipes.
An exhaust manifold comprising:
- four branch pipes that are connected with a head flange;
- an adapter;
- and
- a collecting part that is connected with exhaust-gas downstream side end portions of the branch pipes through the adapter member, wherein
- the adapter member has a ring portion and a reinforcement portion that is formed like a cross shaped pillar with the ring portion as one unit, the cross shaped pillar being formed along from an exhaust-gas upstream side end surface of the ring portion to an exhaust-gas downstream side end surface of the ring portion and toward a center of the ring portion from the ring portion, wherein
- the exhaust-gas downstream side end portions of the branch pipes are inserted into insertion holes that have a quarter circle shape and formed between the ring portion and the reinforcement portion of the adapter member so that exhaust-gas downstream side end surfaces of the branch pipes are located on the same plane as the exhaust-gas downstream side end surface of the adapter member;
- and wherein
- the adapter member and the exhaust-gas downstream side end portions of the branch pipes are fixed with each other by a circular weld line formed along outer circumferences of the exhaust-gas downstream side end portions of the branch pipes at the exhaust-gas downstream side end surface of the adapter member and weld line formed like a cross shape along adjacent side wall portions of the branch pipes.
Dependencies are inferred from the claim text.