| 摘要 |
The present invention relates to a manifold for receiving exhausts from a multi- cylindrical internal combustion engine (1). The internal combustion engine (1) has such a firing order that the riser (4a, 4b) in the manifold (4a, 4b) receives exhausts from two cylinders (c2, c4, c7, c8) during an overlapping stage, simultaneously via an inlet opening (3a2, 3b3) arranged upstream and from an inlet opening (3a4, 3b4) arranged downstream in the riser (4a, 4b). The riser (4a, 4b) comprises a substantially constant cross sectional area, except in one area (A, B), which is located in a position in connection with the inlet opening arranged downstream (3a4, 3b4) of the two inlet openings (3a2, 3a4, 3b3, 3b4), receiving exhausts simultaneously. Said area (A, B) has a geometry facilitating receipt and flow of exhausts in the predetermined direction in the riser (4a, 4b), on occasions when the two inlet openings (3a2, 3a4, 3b3, 3b4) receive exhausts simultaneously. |
